From 354a42a1a4b4bc301442dc77275be9bde05aef3f Mon Sep 17 00:00:00 2001
From: Asa Rentschler <rentschleraj@ornl.gov>
Date: Wed, 4 Sep 2024 10:52:15 -0400
Subject: [PATCH 01/10] Initial rework. System works but is buggy and badly
 written

---
 .gitignore                                    |   2 +
 README.md                                     |   2 +-
 {assets => misc}/artwork/icon.drawio          |   0
 {assets => misc}/artwork/icon.drawio.png      | Bin
 setup-env.sh => misc/scripts/setup-env.sh     |   0
 vtmp.vim => misc/vim/vtmp.vim                 |   0
 pyproject.toml                                |  23 +
 src/velocity/__init__.py                      |   5 +
 velocity => src/velocity/__main__.py          | 105 +--
 lib/backends.py => src/velocity/_backends.py  |  24 +-
 lib/build.py => src/velocity/_build.py        | 101 ++-
 src/velocity/_config.py                       | 257 ++++++
 .../velocity/_exceptions.py                   |  18 +
 src/velocity/_graph.py                        | 752 ++++++++++++++++++
 lib/graph.py => src/velocity/_graph_old.py    |   2 +-
 lib/print.py => src/velocity/_print.py        |   0
 {lib => tests}/__init__.py                    |   0
 tests/test__config.py                         |  59 ++
 tests/test__graph.py                          | 197 +++++
 19 files changed, 1402 insertions(+), 145 deletions(-)
 rename {assets => misc}/artwork/icon.drawio (100%)
 rename {assets => misc}/artwork/icon.drawio.png (100%)
 rename setup-env.sh => misc/scripts/setup-env.sh (100%)
 rename vtmp.vim => misc/vim/vtmp.vim (100%)
 create mode 100644 pyproject.toml
 create mode 100644 src/velocity/__init__.py
 rename velocity => src/velocity/__main__.py (75%)
 mode change 100755 => 100644
 rename lib/backends.py => src/velocity/_backends.py (94%)
 rename lib/build.py => src/velocity/_build.py (66%)
 create mode 100644 src/velocity/_config.py
 rename lib/exceptions.py => src/velocity/_exceptions.py (77%)
 create mode 100644 src/velocity/_graph.py
 rename lib/graph.py => src/velocity/_graph_old.py (99%)
 rename lib/print.py => src/velocity/_print.py (100%)
 rename {lib => tests}/__init__.py (100%)
 create mode 100644 tests/test__config.py
 create mode 100644 tests/test__graph.py

diff --git a/.gitignore b/.gitignore
index aeb354d..4201467 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,3 +9,5 @@
 ############################################################
 tmp
 *__pycache__
+dist
+*\.egg-info
diff --git a/README.md b/README.md
index 89d38dc..bf495b8 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 <h1><img align="center" height="50" src="assets/artwork/icon.drawio.png"> VELOCITY</h1>
 
 ## Description
-Container build system.
+A container build manager.
 
 ## Documentation
 Run:
diff --git a/assets/artwork/icon.drawio b/misc/artwork/icon.drawio
similarity index 100%
rename from assets/artwork/icon.drawio
rename to misc/artwork/icon.drawio
diff --git a/assets/artwork/icon.drawio.png b/misc/artwork/icon.drawio.png
similarity index 100%
rename from assets/artwork/icon.drawio.png
rename to misc/artwork/icon.drawio.png
diff --git a/setup-env.sh b/misc/scripts/setup-env.sh
similarity index 100%
rename from setup-env.sh
rename to misc/scripts/setup-env.sh
diff --git a/vtmp.vim b/misc/vim/vtmp.vim
similarity index 100%
rename from vtmp.vim
rename to misc/vim/vtmp.vim
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..491927a
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,23 @@
+[build-system]
+requires = [ "setuptools>=61.0" ]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "velocity"
+dynamic = [ "version" ]
+authors = [
+    { name="Asa"}
+]
+description = "A container build manager"
+readme = "README.md"
+dependencies = [
+    "pyyaml",
+    "networkx",
+    "colorama",
+    "editor",
+    "loguru"
+]
+
+[project.urls]
+Homepage = "https://github.com/olcf/velocity"
+Issues = "https://github.com/olcf/velocity/issues"
diff --git a/src/velocity/__init__.py b/src/velocity/__init__.py
new file mode 100644
index 0000000..6402a0d
--- /dev/null
+++ b/src/velocity/__init__.py
@@ -0,0 +1,5 @@
+from ._config import config
+
+__version__ = "0.0.0"
+
+config.set("velocity:version", __version__)
diff --git a/velocity b/src/velocity/__main__.py
old mode 100755
new mode 100644
similarity index 75%
rename from velocity
rename to src/velocity/__main__.py
index a8ec53a..7fbdd35
--- a/velocity
+++ b/src/velocity/__main__.py
@@ -1,16 +1,14 @@
-#!/usr/bin/env python3
-
 import argparse
 import re
 import os
 import editor
 from pathlib import Path
 from colorama import Fore, Style
-from lib.graph import Node, ImageGraph, Target, DepOp
-from lib.build import Builder
-from lib.print import p1print, sp1print, TextBlock, wprint, print_text_blocks
+from ._graph import ImageRepo, Target, DepOp
+from ._build import Builder
+from ._print import p1print, sp1print, TextBlock, wprint, print_text_blocks
+from ._config import config
 
-VERSION = 'beta.0.0'
 
 ############################################################
 # Main
@@ -20,49 +18,14 @@
     ############################################################
     # Load Config
     ############################################################
-    SETTINGS = dict()
-
-    if os.getenv('VELOCITY_IMAGE_DIR') is not None:
-        SETTINGS['VELOCITY_IMAGE_DIR'] = os.getenv('VELOCITY_IMAGE_DIR')
-    else:
-        wprint([
-            TextBlock("VELOCITY_IMAGE_DIR not set!")
-        ])
-        exit(1)
-
     if os.getenv('VELOCITY_SYSTEM') is not None:
-        SETTINGS['VELOCITY_SYSTEM'] = os.getenv('VELOCITY_SYSTEM')
-    else:
-        wprint([
-            TextBlock("VELOCITY_SYSTEM not set!")
-        ])
-        exit(1)
-
+        config.set("velocity:system", os.getenv('VELOCITY_SYSTEM'))
     if os.getenv('VELOCITY_BACKEND') is not None:
-        SETTINGS['VELOCITY_BACKEND'] = os.getenv('VELOCITY_BACKEND')
-    else:
-        wprint([
-            TextBlock("VELOCITY_BACKEND not set!")
-        ])
-        exit(1)
-
+        config.set("velocity:backend", os.getenv('VELOCITY_BACKEND'))
     if os.getenv('VELOCITY_DISTRO') is not None:
-        SETTINGS['VELOCITY_DISTRO'] = os.getenv('VELOCITY_DISTRO')
-    else:
-        wprint([
-            TextBlock("VELOCITY_DISTRO not set!")
-        ])
-        exit(1)
-
+        config.set("velocity:distro", os.getenv('VELOCITY_DISTRO'))
     if os.getenv('VELOCITY_BUILD_DIR') is not None:
-        SETTINGS['VELOCITY_BUILD_DIR'] = os.getenv('VELOCITY_BUILD_DIR')
-    else:
-        wprint([
-            TextBlock("VELOCITY_BUILD_DIR not set!")
-        ])
-        exit(1)
-
-    SETTINGS['VERSION'] = VERSION
+        config.set("velocity:build_dir", os.getenv('VELOCITY_BUILD_DIR'))
 
     ############################################################
     # Parse Args
@@ -72,7 +35,7 @@
         description='Build tool for OLCF containers',
         epilog='See (https://gitlab.ccs.ornl.gov/saue-software/velocity)')
     parser.add_argument('-v', '--version', action='version',
-                        version=f"%(prog)s {SETTINGS['VERSION']}", help="program version")
+                        version=f"%(prog)s {config.get('velocity:version')}", help="program version")
     parser.add_argument('-b', '--backend', action='store')
     parser.add_argument('-s', '--system', action='store')
     parser.add_argument('-d', '--distro', action='store')
@@ -112,21 +75,21 @@
     ############################################################
     # apply user run time arguments over settings
     ############################################################
-    SETTINGS['VELOCITY_SYSTEM'] = args.system if args.system is not None else SETTINGS['VELOCITY_SYSTEM']
-    SETTINGS['VELOCITY_BACKEND'] = args.backend if args.backend is not None else SETTINGS['VELOCITY_BACKEND']
-    SETTINGS['VELOCITY_DISTRO'] = args.distro if args.distro is not None else SETTINGS['VELOCITY_DISTRO']
+    if args.system is not None:
+        config.set("velocity:system", args.system)
+    if args.backend is not None:
+        config.set("velocity:backend", args.backend)
+    if args.distro is not None:
+        config.set("velocity:distro", args.distro)
 
     ############################################################
     # Load images
     ############################################################
-    imageGraph = ImageGraph(
-        str(Path(SETTINGS['VELOCITY_IMAGE_DIR']).absolute()),
-        SETTINGS['VELOCITY_BACKEND'],
-        SETTINGS['VELOCITY_SYSTEM'],
-        SETTINGS['VELOCITY_DISTRO']
-    )
+    imageRepo = ImageRepo()
+    imageRepo.import_from_dir("/home/xjv/PycharmProjects/velocity-images")
 
     # print backend, system, distro
+    """
     p1print([
         TextBlock(f"System: "),
         TextBlock(f"{SETTINGS['VELOCITY_SYSTEM']}", fore=Fore.MAGENTA, style=Style.BRIGHT)
@@ -140,30 +103,16 @@
         TextBlock(f"{SETTINGS['VELOCITY_DISTRO']}", fore=Fore.MAGENTA, style=Style.BRIGHT)
     ])
     print()  # add newline
+    """
 
     ############################################################
     # Handle User Commands
     ############################################################
     if args.subcommand == 'build':
         # parse targets
-        targets = []
-        for target in args.targets:
-            result = re.search(r'^(.*)@(.*)([%^_=])(.*)$', target)
-            if result is not None:
-                if result[3] == '=':
-                    targets.append(Target(Node(result[1], result[4]), DepOp.EQ))
-                elif result[3] == '^':
-                    targets.append(Target(Node(result[1], result[4]), DepOp.GE))
-                elif result[3] == '_':
-                    targets.append(Target(Node(result[1], result[4]), DepOp.LE))
-                elif result[3] == '%':
-                    targets.append(Target(Node(result[1], result[2]), DepOp.GE))
-                    targets.append(Target(Node(result[1], result[4]), DepOp.LE))
-            else:
-                targets.append(Target(Node(target, ''), DepOp.UN))
 
         # get recipe
-        recipe = imageGraph.create_build_recipe(targets)
+        recipe = imageRepo.create_build_recipe(args.targets)
 
         # print build specs
         p1print([
@@ -171,20 +120,16 @@
         ])
         for r in recipe:
             sp1print([
-                TextBlock(f"{r.name}@={r.tag}", fore=Fore.MAGENTA, style=Style.BRIGHT)
+                TextBlock(f"{r.name}@{r.version}", fore=Fore.MAGENTA, style=Style.BRIGHT)
             ])
         print()  # add newline
 
         # prep builder
         builder = Builder(
             recipe,
-            SETTINGS['VELOCITY_BACKEND'],
-            SETTINGS['VELOCITY_SYSTEM'],
-            SETTINGS['VELOCITY_DISTRO'],
             build_name=args.name,
             dry_run=args.dry_run,
             leave_tags=args.leave_tags,
-            build_dir=SETTINGS['VELOCITY_BUILD_DIR'],
             verbose=args.verbose
         )
 
@@ -195,7 +140,7 @@
 
         # group and order
         grouped = dict()
-        for node in imageGraph.nodes:
+        for node in imageRepo.images:
             if node.name not in grouped:
                 grouped[node.name] = list()
             grouped[node.name].append(node)
@@ -211,7 +156,7 @@
             deps.sort()
             for t in deps:
                 sp1print([
-                    TextBlock(t.tag, fore=Fore.YELLOW, style=Style.BRIGHT)
+                    TextBlock(t.version, fore=Fore.YELLOW, style=Style.BRIGHT)
                 ])
         print()  # add newline
 
@@ -313,7 +258,7 @@ def spec_print(seed: str, indent: int, fdt: dict, rs: tuple[Node]):
                 raise NotADirectoryError(tag)
         else:
             raise NotADirectoryError(name)
-    
+
     elif args.subcommand == 'create':
         image_dir = Path(SETTINGS['VELOCITY_IMAGE_DIR']).joinpath(args.name, args.version)
         if image_dir.is_dir():
@@ -337,4 +282,4 @@ def spec_print(seed: str, indent: int, fdt: dict, rs: tuple[Node]):
 
     else:
         parser.print_help()
-        print()  # add newline
+        print()  # add newline
\ No newline at end of file
diff --git a/lib/backends.py b/src/velocity/_backends.py
similarity index 94%
rename from lib/backends.py
rename to src/velocity/_backends.py
index cd169ae..83918c0 100644
--- a/lib/backends.py
+++ b/src/velocity/_backends.py
@@ -1,12 +1,13 @@
 import re
 from hashlib import sha256
 from pathlib import Path
-from lib.exceptions import *
 from abc import ABC, abstractmethod
+from ._exceptions import (UndefinedVariableInTemplate, RepeatedSection, LineOutsideOfSection, TemplateSyntaxError,
+                         BackendNotSupported)
+from ._config import config
 
 
 def _substitute(text: str, variables: dict, regex: str) -> str:
-
     def _replace(m: re.Match):
         """
             Substitute a variables in a string by a regex.
@@ -24,7 +25,9 @@ class Backend(ABC):
     def __init__(self, name: str, variables: dict = None) -> None:
         self.name = name
         self.variables = {
-            '__backend__': self.name
+            '__backend__': config.get("velocity:backend"),
+            '__system__': config.get("velocity:system"),
+            '__distro__': config.get("velocity:distro")
         }
         if variables is not None:
             self.variables.update(variables)
@@ -98,7 +101,7 @@ def _load_template(self, file: Path, variables: dict) -> list:
                     _substitute(
                         line,
                         variables,
-                        r'(?<!\\)%\((\w*)\)'
+                        r'(?<!\\)%{{\s*(\w+)\s*}}'
                     )
                 )
                 if sf_con != '':
@@ -134,7 +137,7 @@ def generate_script(self, file: Path, variables: dict) -> list:
         if '@from' not in sections:
             raise TemplateSyntaxError("You must have a '@from' section in your template!")
         elif len(sections['@from']) != 1:
-            raise TemplateSyntaxError("You can only have one source in your template!",)
+            raise TemplateSyntaxError("You can only have one source in your template!", )
         elif len(sections['@from'][0].split()) != 1:
             raise TemplateSyntaxError("Your source must be a single string!", sections['@from'][0])
         else:
@@ -269,7 +272,7 @@ def generate_script(self, file: Path, variables: dict) -> list:
         elif len(sections['@from'][0].split()) != 1:
             raise TemplateSyntaxError("Your source must be a single string!", sections['@from'][0])
         else:
-            if re.match(r'^.*\.sif$', sections['@from'][0]):    #Path(sections['@from'][0]).is_file():
+            if re.match(r'^.*\.sif$', sections['@from'][0]):  #Path(sections['@from'][0]).is_file():
                 script.append('Bootstrap: localimage')
             elif re.match(r'^.*\/.*:.*$', sections['@from'][0]):
                 script.append('Bootstrap: docker')
@@ -351,10 +354,11 @@ def clean_up_old_image_cmd(self, name: str) -> str:
         return 'echo'
 
 
-def get_backend(name: str, variables: dict) -> Backend:
-    if name == 'podman':
+def get_backend(variables: dict) -> Backend:
+    backend = config.get("velocity:backend")
+    if backend == 'podman':
         return Podman(variables)
-    elif name == 'apptainer':
+    elif backend == 'apptainer':
         return Apptainer(variables)
     else:
-        raise BackendNotSupported(name)
+        raise BackendNotSupported(backend)
diff --git a/lib/build.py b/src/velocity/_build.py
similarity index 66%
rename from lib/build.py
rename to src/velocity/_build.py
index df9635d..f84381d 100644
--- a/lib/build.py
+++ b/src/velocity/_build.py
@@ -10,10 +10,11 @@
 from threading import Thread
 from pathlib import Path
 from colorama import Fore, Style
-from lib.graph import Node
-from lib.print import p1print, sp1print, TextBlock
-from lib.exceptions import BackendNotSupported
-from lib.backends import get_backend
+
+from ._config import config
+from ._graph import Image
+from ._print import p1print, sp1print, TextBlock
+from ._backends import get_backend
 
 
 def read_pipe(pipe: PIPE, topic: SimpleQueue, prefix: str, log: SimpleQueue) -> None:
@@ -91,58 +92,56 @@ def run(cmd: str, log_file: Path = None, verbose: bool = False) -> None:
                 ])
         exit(process.poll())
 
-
+"""
 class BuildUnit:
 
-    def __init__(self, node: Node):
+    def __init__(self, node: Image):
         self.node = node
         self.build_id = ''.join(random.choice(string.ascii_lowercase) for _ in range(8))
-
+"""
 
 class Builder:
 
-    def __init__(self, bt: tuple[Node], backend: str, system: str, distro: str, build_dir: str,
-                 build_name: str = None, dry_run: bool = False, leave_tags: bool = True, verbose: bool = False):
+    def __init__(self, bt: tuple[Image], build_name: str = None, dry_run: bool = False,
+                 leave_tags: bool = True, verbose: bool = False):
         self.build_units = list()
-        self.backend = backend
-        self.system = system
-        self.distro = distro
-        self.build_dir = Path(build_dir)
         self.build_name = build_name
         self.dry_run = dry_run
         self.leave_tags = leave_tags
         self.verbose = verbose
 
-        self.backend_engine = get_backend(self.backend, {'__system__': self.system, '__distro__': self.distro})
+        self.backend_engine = get_backend({})
 
         # create build_dir if it does not exist
+        self.build_dir = Path(config.get("velocity:build_dir"))
         self.build_dir.mkdir(mode=0o777, parents=True, exist_ok=True)
 
-        for node in bt:
-            self.build_units.append(BuildUnit(node))
+        self.build_units = bt
 
     def build(self):
         # store pwd
         pwd = Path(Path().absolute())
 
-        # clear build_dir
+
+        """# clear build_dir
         for entry in self.build_dir.iterdir():
             if entry.is_dir():
                 shutil.rmtree(entry)
             else:
                 entry.unlink()
+        """
 
         last = None  # last image that was built
         for u in self.build_units:
 
             if u == self.build_units[-1]:
-                sorted_specs = [(bu.node.name, bu.node.tag) for bu in self.build_units]
+                sorted_specs = [(bu.name, bu.version) for bu in self.build_units]
                 sorted_specs.sort()
                 tag = str(self.build_name if self.build_name is not None else
-                          f"{'_'.join(f'{bu[0]}-{bu[1]}' for bu in sorted_specs)}__{self.system}-{self.distro}")
+                          f"{'_'.join(f'{bu[0]}-{bu[1]}' for bu in sorted_specs)}__{config.get('velocity:system')}-{config.get('velocity:distro')}")
                 name = self.backend_engine.format_image_name(Path(pwd.absolute()), tag)
             else:
-                name = self.backend_engine.format_image_name(Path.joinpath(self.build_dir, u.build_id), u.build_id)
+                name = self.backend_engine.format_image_name(Path.joinpath(self.build_dir, u.id), u.id)
 
             self._build_image(u, last, name)
             if not self.dry_run and not self.leave_tags and last is not None:
@@ -152,46 +151,46 @@ def build(self):
         # go back to the starting dir
         os.chdir(pwd)
 
-    def _build_image(self, unit: BuildUnit, src_image: str, name: str):
+    def _build_image(self, unit: Image, src_image: str, name: str):
         # print start of build
         p1print([
-            TextBlock(f"{unit.build_id}", fore=Fore.RED, style=Style.BRIGHT),
+            TextBlock(f"{unit.id}", fore=Fore.RED, style=Style.BRIGHT),
             TextBlock(f": BUILD "),
-            TextBlock(f"{unit.node.name}@={unit.node.tag}", fore=Fore.MAGENTA, style=Style.BRIGHT),
+            TextBlock(f"{unit.name}@{unit.version}", fore=Fore.MAGENTA, style=Style.BRIGHT),
             TextBlock(f"{' --DRY-RUN' if self.dry_run else ''} ...")
         ])
 
         start = timer()
 
         # create build dir and go to it
-        build_sub_dir = Path.joinpath(self.build_dir, unit.build_id)
-        build_sub_dir.mkdir(mode=0o744)
+        build_sub_dir = Path.joinpath(self.build_dir, unit.id)
+        build_sub_dir.mkdir(mode=0o744, exist_ok=True)
         os.chdir(build_sub_dir)
 
         # copy additional files
-        if Path.joinpath(unit.node.path, self.system).is_dir():
+        if len(unit.files) > 0 and Path.joinpath(unit.path, "files").is_dir():
             p1print([
-                TextBlock(f"{unit.build_id}", fore=Fore.RED, style=Style.BRIGHT),
+                TextBlock(f"{unit.id}", fore=Fore.RED, style=Style.BRIGHT),
                 TextBlock(f": COPYING FILES ...")
             ])
 
-            for entry in Path.joinpath(unit.node.path, self.system).iterdir():
+            for entry in unit.files:
                 # print copy operation
                 if self.verbose:
                     sp1print([
-                        TextBlock('DIR: ' if entry.is_dir() else 'FILE: ', fore=Fore.YELLOW, style=Style.BRIGHT),
-                        TextBlock(f"{entry.absolute()}", fore=Fore.GREEN),
+                        TextBlock('DIR: ' if Path.joinpath(unit.path, "files", entry).is_dir() else 'FILE: ', fore=Fore.YELLOW, style=Style.BRIGHT),
+                        TextBlock(f"{Path.joinpath(unit.path, 'files', entry).absolute()}", fore=Fore.GREEN),
                         TextBlock(f" -> ", fore=Fore.YELLOW, style=Style.BRIGHT),
-                        TextBlock(f"{Path.joinpath(build_sub_dir, entry.name).absolute()}", fore=Fore.GREEN)
+                        TextBlock(f"{Path.joinpath(build_sub_dir, entry).absolute()}", fore=Fore.GREEN)
                     ])
-                if entry.is_dir():
-                    shutil.copytree(entry, Path.joinpath(build_sub_dir, entry.name))
+                if Path.joinpath(unit.path, "files", entry).is_dir():
+                    shutil.copytree(Path.joinpath(unit.path, "files", entry), Path.joinpath(build_sub_dir, entry))
                 else:
-                    shutil.copy(entry, Path.joinpath(build_sub_dir, entry.name))
+                    shutil.copy(Path.joinpath(unit.path, "files", entry), Path.joinpath(build_sub_dir, entry))
 
         # parse template and create script...
         p1print([
-            TextBlock(f"{unit.build_id}", fore=Fore.RED, style=Style.BRIGHT),
+            TextBlock(f"{unit.id}", fore=Fore.RED, style=Style.BRIGHT),
             TextBlock(f": GENERATING SCRIPT ...")
         ])
         if self.verbose:
@@ -201,17 +200,16 @@ def _build_image(self, unit: BuildUnit, src_image: str, name: str):
             ])
 
         # get and update script variables
-        script_variables = unit.node.build_specifications['variables'] \
-            if 'variables' in unit.node.build_specifications else dict()
-        script_variables.update({'__name__': unit.node.name})
-        script_variables.update({'__tag__': unit.node.tag})
-        script_variables.update({'__timestamp__': datetime.datetime.now()})
-        script_variables.update({'__threads__': int(os.cpu_count() * 0.75) if int(os.cpu_count() * 0.75) < 16 else 16})
+        script_variables = unit.variables.copy()
+        script_variables.update({'__name__': unit.name})
+        script_variables.update({'__version__': str(unit.version)})
+        script_variables.update({'__timestamp__': str(datetime.datetime.now())})
+        script_variables.update({'__threads__': str(int(os.cpu_count() * 0.75) if int(os.cpu_count() * 0.75) < 16 else 16)})
         if src_image is not None:
             script_variables.update({'__base__': src_image})
 
         script = self.backend_engine.generate_script(
-            Path.joinpath(unit.node.path, 'templates', f'{self.distro}.vtmp'),
+            Path.joinpath(unit.path, 'templates', f'{unit.template}.vtmp'),
             script_variables
         )
         # write out script
@@ -227,26 +225,23 @@ def _build_image(self, unit: BuildUnit, src_image: str, name: str):
         build_cmd = self.backend_engine.generate_build_cmd(
             str(Path.joinpath(build_sub_dir, 'script')),
             name,
-            unit.node.build_specifications['arguments'] if 'arguments' in unit.node.build_specifications else None
+            unit.arguments
         )
         build_file_path = Path.joinpath(build_sub_dir, 'build')
         build_contents = ['#!/usr/bin/env bash']
 
-        if 'prolog' in unit.node.build_specifications:
+
+        if unit.prolog is not None:
             p1print([
-                TextBlock(f"{unit.build_id}", fore=Fore.RED, style=Style.BRIGHT),
+                TextBlock(f"{unit.id}", fore=Fore.RED, style=Style.BRIGHT),
                 TextBlock(f": RUNNING PROLOG ... && BUILDING ...")
             ])
-            with open(Path.joinpath(build_sub_dir, unit.node.build_specifications['prolog']), 'r') as prolog:
-                for line in prolog:
-                    striped = re.sub(r'#.*', '', line)
-                    if not striped.isspace():
-                        build_contents.append(striped.strip('\n'))
+            build_contents.append(unit.prolog.strip('\n'))
             build_contents.append(build_cmd)
 
         else:
             p1print([
-                TextBlock(f"{unit.build_id}", fore=Fore.RED, style=Style.BRIGHT),
+                TextBlock(f"{unit.id}", fore=Fore.RED, style=Style.BRIGHT),
                 TextBlock(f": BUILDING ...")
             ])
             build_contents.append(build_cmd)
@@ -267,11 +262,11 @@ def _build_image(self, unit: BuildUnit, src_image: str, name: str):
         end = timer()
 
         p1print([
-            TextBlock(f"{unit.build_id}", fore=Fore.RED, style=Style.BRIGHT),
+            TextBlock(f"{unit.id}", fore=Fore.RED, style=Style.BRIGHT),
             TextBlock(f": IMAGE "),
             TextBlock(f"{name}", fore=Fore.MAGENTA, style=Style.BRIGHT),
             TextBlock(' ('),
-            TextBlock(f"{unit.node.name}@={unit.node.tag}", fore=Fore.MAGENTA, style=Style.BRIGHT),
+            TextBlock(f"{unit.name}@{unit.version}", fore=Fore.MAGENTA, style=Style.BRIGHT),
             TextBlock(f") BUILT ["),
             TextBlock(f"{datetime.timedelta(seconds=round(end - start))}", fore=Fore.MAGENTA, style=Style.BRIGHT),
             TextBlock(']')
diff --git a/src/velocity/_config.py b/src/velocity/_config.py
new file mode 100644
index 0000000..502b662
--- /dev/null
+++ b/src/velocity/_config.py
@@ -0,0 +1,257 @@
+from loguru import logger
+from ._exceptions import InvalidSchema, InvalidConfig
+from platform import processor as arch
+from pathlib import Path
+from os import getlogin as os_getlogin
+
+"""
+Allowed schema configurations:
+
+bool:
+    required: bool=True
+    default: bool
+
+str:
+    required: bool=True
+    default: str
+    allowed: list[str]=None     # None is treated as if there are no restrictions
+
+list:
+    required: bool=True
+    default: list
+    items: {schema}      # the types of items in the list (bool or str)
+
+dict:
+    required: bool=True
+    auto: bool=False            # if not defined auto-generate
+    cardinality: str="one"      # allowed values are 'one' or 'many'
+                                # If many, the dict name is ignored and n matches of the dict are allowed
+    properties: dict
+"""
+
+DEFAULT_BOOL_SCHEMA = {
+    "type": bool,
+}
+
+DEFAULT_STR_SCHEMA = {
+    "type": str,
+}
+
+DEFAULT_LIST_SCHEMA = {
+    "type": list,
+    "default": list(),
+    "items": {
+        "type": str,
+        "required": False
+    }
+}
+
+IM_SCHEMA = {
+    "type": str,
+    "default": "COMBINE",
+    "allowed": ["COMBINE", "OVERRIDE"]
+}
+
+VELOCITY_SCHEMA = {
+    "type": dict,
+    "properties": {
+        "velocity": {
+            "type": dict,
+            "properties": {
+                "backend": DEFAULT_STR_SCHEMA,
+                "distro:": DEFAULT_STR_SCHEMA,
+                "system": DEFAULT_STR_SCHEMA,
+                "verbose": {
+                    "type": bool,
+                    "default": False
+                },
+                "debug": {
+                    "type": str,
+                    "default": "INFO",
+                    "allowed": ["INFO", "DEBUG"]
+                }
+            }
+        },
+        "build_specs": {
+            "type": dict,
+            "default": {
+                "type": dict,
+                "auto": True,
+                "properties": {
+                    "variables": DEFAULT_LIST_SCHEMA
+                }
+            },
+            "system": {
+                "type": dict,
+                "required": False,
+                "cardinality": "many",
+                "properties": {
+                    "default": {
+                        "type": dict,
+                        "auto": True,
+                        "properties": {
+                            "prolog_lines": DEFAULT_LIST_SCHEMA,
+                            "IM_prolog_lines": IM_SCHEMA,
+                            "variables": DEFAULT_LIST_SCHEMA,
+                            "IM_variables": IM_SCHEMA
+                        }
+                    },
+                    "backend": {
+                        "type": dict,
+                        "required": False,
+                        "cardinality": "many",
+                        "properties": {
+                            "default": {
+                                "type": dict,
+                                "auto": True,
+                                "properties": {
+                                    "arguments": DEFAULT_LIST_SCHEMA,
+                                    "IM_arguments": IM_SCHEMA,
+                                    "prolog_lines": DEFAULT_LIST_SCHEMA,
+                                    "IM_prolog_lines": IM_SCHEMA,
+                                    "variables": DEFAULT_LIST_SCHEMA,
+                                    "IM_variables": IM_SCHEMA
+                                }
+                            },
+                            "image": {
+                                "type": dict,
+                                "required": False,
+                                "cardinality": "many",
+                                "properties": {
+                                    "arguments": DEFAULT_LIST_SCHEMA,
+                                    "IM_arguments": IM_SCHEMA,
+                                    "dependencies": DEFAULT_LIST_SCHEMA,
+                                    "IM_dependencies": IM_SCHEMA,
+                                    "prolog_script": {
+                                        "type": str,
+                                        "default": None
+                                    },
+                                    "variables": DEFAULT_LIST_SCHEMA,
+                                    "IM_variables": IM_SCHEMA
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+
+
+def validate_and_generate_config(config: dict | list | str | bool | None, schema: dict) -> bool:
+    try:
+        if schema["type"] == dict:
+            allowed = {"type", "required", "auto", "cardinality", "properties"}
+            if not allowed.issuperset(schema.keys()):
+                raise InvalidSchema("schema {} contains invalid attributes: {}".format(
+                    schema,
+                    set(schema).difference(allowed)
+                ))
+            if not isinstance(schema["type"], type) or \
+                    not isinstance(schema["required"], bool) or \
+                    not isinstance(schema["auto"], bool) or \
+                    schema["cardinality"] not in ("one", "many") or \
+                    not (isinstance(schema["properties"], dict) and schema["properties"] is not None):
+                raise InvalidSchema("schema {} contains invalid attribute types".format(
+                    schema
+                ))
+            if not isinstance(config, dict) and config is not None:
+                raise InvalidConfig("config type '{}' does not match schema type '{}'".format(
+                    type(config),
+                    schema["type"]
+                ))
+
+            if schema["required"]:
+                if config is None:
+                    raise InvalidConfig("schema required but config is '{}'".format(
+                        None
+                    ))
+                else:
+                    for p in config.keys():
+                        for s in schema["properties"]:
+                            validate_and_generate_config(config[p], s)
+            else:
+                if config is None:
+                    return True
+
+
+            # return True
+        elif schema["type"] == list:
+            pass
+        elif schema["type"] == str:
+            pass
+        elif schema["type"] == bool:
+            pass
+        else:
+            raise InvalidSchema("schema type '{}' is not valid".format(schema["type"]))
+
+    except (KeyError, TypeError):
+        logger.warning("schema {} is not a dict or does not specify type".format(schema))
+    except (InvalidSchema, InvalidConfig) as e:
+        logger.warning(e)
+        return False
+
+
+class Config:
+    """Configuration class."""
+    def __init__(self) -> None:
+        self._config = dict()
+
+    def set(self, item: str, value: int | bool | str | list | dict | None) -> None:
+        """Set config property."""
+        try:
+            if item != "":
+                parts: list[str] = item.split(":")
+                set_value = self._config
+                for p in parts:
+                    if not p.isidentifier():
+                        logger.warning("'{}' is not a valid identifier", format(item))
+                    if p != parts[-1]:
+                        if p not in set_value:
+                            set_value[p] = dict()
+                        set_value = set_value[p]
+                    else:
+                        set_value[p] = value
+            else:
+                raise AttributeError("you cannot set the base config node")
+        except AttributeError as e:
+            logger.warning(e)
+
+    def get(self, item: str) -> int | bool | str | list | dict | None:
+        """Get config property."""
+        try:
+            if item != "":
+                parts: list[str] = item.split(":")
+                ret_value = self._config
+                for p in parts:
+                    if not p.isidentifier():
+                        logger.warning("'{}' is not a valid identifier", format(item))
+                        return None
+                    ret_value = ret_value[p]
+                return ret_value
+            else:
+                return self._config
+        except (KeyError, TypeError):
+            logger.warning("could not find '{}' in config", format(item))
+        return None
+
+    def __str__(self) -> str:
+        return str(self._config)
+
+
+# default configuration
+_config = Config()
+_config.set("velocity", {
+    "system": arch(),
+    "backend": "apptainer",
+    "distro": "ubuntu",
+    "verbose": False,
+    "debug": "WARNING",
+    "config_dir": Path.home().joinpath(".velocity"),
+    "build_dir": Path("/tmp").joinpath(os_getlogin(), "velocity")
+})
+
+
+# config singleton
+config = _config
diff --git a/lib/exceptions.py b/src/velocity/_exceptions.py
similarity index 77%
rename from lib/exceptions.py
rename to src/velocity/_exceptions.py
index c6392cf..472e227 100644
--- a/lib/exceptions.py
+++ b/src/velocity/_exceptions.py
@@ -49,3 +49,21 @@ class TemplateSyntaxError(Exception):
 
     def __init__(self, message, line: str = None):
         super().__init__(f"{message} {f':line: <{line}>' if line is not None else ''}")
+
+
+class InvalidImageVersionError(Exception):
+    """Invalid image version spec."""
+    def __init__(self, *args):
+        super().__init__(*args)
+
+
+class InvalidSchema(Exception):
+    """Invalid schema."""
+    def __init__(self, *args):
+        super().__init__(*args)
+
+
+class InvalidConfig(Exception):
+    """Invalid config."""
+    def __init__(self, *args):
+        super().__init__(*args)
diff --git a/src/velocity/_graph.py b/src/velocity/_graph.py
new file mode 100644
index 0000000..1111c17
--- /dev/null
+++ b/src/velocity/_graph.py
@@ -0,0 +1,752 @@
+"""Graph library and tools for dependency graph"""
+from loguru import logger
+from re import split as re_split, fullmatch as re_fullmatch, Match as ReMatch
+from ._exceptions import (
+    InvalidImageVersionError,
+    InvalidDependencySpecification,
+    EdgeViolatesDAG,
+    NoAvailableBuild
+)
+from pathlib import Path
+from hashlib import sha256
+from typing_extensions import Self
+from networkx import (
+    DiGraph as nx_DiGraph,
+    is_directed_acyclic_graph as nx_is_directed_acyclic_graph,
+    find_cycle as nx_find_cycle,
+    neighbors as nx_neighbors,
+    has_path as nx_has_path
+)
+from yaml import safe_load as yaml_safe_load
+from ._config import config
+from copy import deepcopy
+from enum import Enum
+
+VERSION_REGEX = \
+    r"^(?P<major>[0-9]+)(?:\.(?P<minor>[0-9]+)(:?\.(?P<patch>[0-9]+))?)?(?:-(?P<suffix>[a-zA-Z0-9]+))?$"
+
+
+def get_permutations(idx: int, sets: list[list]):
+    """
+    Get all the possible permutations from a list of lists
+    :param idx: recursion level
+    :param sets: sets for permutation
+    :return: permutations
+    """
+    permutations = list()
+    if len(sets) == 0:
+        pass
+    elif idx == len(sets) - 1:
+        for i in sets[idx]:
+            permutations.append({i})
+    else:
+        for i in sets[idx]:
+            sub_permutations = get_permutations(idx + 1, sets)
+            for sub in sub_permutations:
+                permutations.append(sub.union({i}))
+    return permutations
+
+
+class Version:
+    """Version class for images."""
+    def __init__(self, version_specifier: str) -> None:
+        self.vs = version_specifier
+        try:
+            version_dict: dict = re_fullmatch(VERSION_REGEX, version_specifier).groupdict()
+            self.major: int | None = int(version_dict['major']) if version_dict['major'] is not None else None
+            self.minor: int | None = int(version_dict['minor']) if version_dict['minor'] is not None else None
+            self.patch: int | None = int(version_dict['patch']) if version_dict['patch'] is not None else None
+            self.suffix: str | None = str(version_dict['suffix']) if version_dict['suffix'] is not None else None
+            logger.trace("Version: {}".format(self.__str__()))
+        except AttributeError:
+            self.major: int | None = None
+            self.minor: int | None = None
+            self.patch: int | None = None
+            self.suffix: str | None = None
+        except ValueError:
+            logger.error("Could not parse version string: {}".format(version_specifier))
+            exit(1)
+
+    @property
+    def vcs(self) -> str:
+        """Version Comparison String"""
+        return "{:#>9}.{:#>9}.{:#>9}.{:~<9}".format(
+            self.major if self.major is not None else "#",
+            self.minor if self.minor is not None else "#",
+            self.patch if self.patch is not None else "#",
+            self.suffix if self.suffix is not None else "~"
+        )
+
+    def preferred(self, other) -> bool:
+        """Determine which version to prefer when two version are "equal" ex. 12.3 vs 12.3.0-rc1"""
+        return self.vcs > other.vcs
+
+    @property
+    def _vcs_t(self) -> str:
+        """Version Comparison String Truncated"""
+        vl: int = 0
+        if self.major is None:
+            pass
+        elif self.minor is None:
+            vl = 9
+        elif self.patch is None:
+            vl = 19
+        elif self.suffix is None:
+            vl = 29
+        else:
+            vl = 39
+        return self.vcs[:vl]
+
+    @classmethod
+    def _cut_vcses_to_size(cls, one: Self, two: Self) -> tuple[str, str]:
+        """Cut vcses to the longest common length"""
+        length: int = min(len(one._vcs_t), len(two._vcs_t))
+        return one._vcs_t[:length], two._vcs_t[:length]
+
+    def __eq__(self, other) -> bool:
+        if not isinstance(other, Version):
+            raise TypeError(f"'>' not supported between instances of "
+                            f"'{type(self).__name__}' and '{type(other).__name__}'")
+        s_vcs, o_vcs = self._cut_vcses_to_size(self, other)
+        return s_vcs == o_vcs
+
+    def __ne__(self, other) -> bool:
+        if not isinstance(other, Version):
+            raise TypeError(f"'>' not supported between instances of "
+                            f"'{type(self).__name__}' and '{type(other).__name__}'")
+        s_vcs, o_vcs = self._cut_vcses_to_size(self, other)
+        return s_vcs != o_vcs
+
+    def __gt__(self, other) -> bool:
+        if not isinstance(other, Version):
+            raise TypeError(f"'>' not supported between instances of "
+                            f"'{type(self).__name__}' and '{type(other).__name__}'")
+        return self.vcs > other.vcs and not self.__eq__(other)
+
+    def __ge__(self, other) -> bool:
+        if not isinstance(other, Version):
+            raise TypeError(f"'>' not supported between instances of "
+                            f"'{type(self).__name__}' and '{type(other).__name__}'")
+        return self.vcs > other.vcs or self.__eq__(other)
+
+    def __lt__(self, other) -> bool:
+        if not isinstance(other, Version):
+            raise TypeError(f"'>' not supported between instances of "
+                            f"'{type(self).__name__}' and '{type(other).__name__}'")
+        return self.vcs < other.vcs and not self.__eq__(other)
+
+    def __le__(self, other) -> bool:
+        if not isinstance(other, Version):
+            raise TypeError(f"'>' not supported between instances of "
+                            f"'{type(self).__name__}' and '{type(other).__name__}'")
+        return self.vcs < other.vcs or self.__eq__(other)
+
+    def __str__(self) -> str:
+        return self.vs
+
+
+class Spec:
+    def __init__(self):
+        pass
+
+
+class Image:
+    def __init__(self, name: str, version: str, system: str, backend: str, distro: str, path: str) -> None:
+        # foundational
+        self.name: str = name
+        self.version: Version = Version(str(version))
+        self.system: str = system
+        self.backend: str = backend
+        self.distro: str = distro
+        self.dependencies: list[str] = list()
+
+        # additional
+        self.variables: dict[str, str] = dict()
+        self.arguments: list[str] = list()
+        self.template: str = "default"
+        self.files: list[str] = list()
+        self.prolog: str | None = None
+
+        # metadata
+        self.path: Path = Path(path)
+
+    def satisfies(self, spec: str) -> bool:
+        """Test if this node satisfies the given spec."""
+        name_version_regex: str = \
+            r"^(?P<name>{})(?:(?:@(?P<left>[\d\.]+)(?!@))?(?:@?(?P<colen>:)(?P<right>[\d\.]+)?)?)?$".format(self.name)
+        system_regex: str = r"^system=(?P<system>[a-zA-Z0-9]+)$"
+        backend_regex: str = r"^backend=(?P<backend>[a-zA-Z0-9]+)$"
+        distro_regex: str = r"^distro=(?P<distro>[a-zA-Z0-9]+)$"
+        dependency_regex: str = r"^\^(?P<name>[a-zA-Z0-9-]+)$"
+
+        ss: list[str] = re_split(r"\s+", spec.strip())
+
+        for part in ss:
+            # name and version
+            res: ReMatch | None = re_fullmatch(name_version_regex, part)
+            if res is not None:
+                gd: dict = res.groupdict()
+                if gd["left"] is not None and gd["right"] is None:  # n@v: or n@v
+                    if gd["colen"] is not None:
+                        if Version(gd["left"]) > self.version:
+                            return False
+                    else:
+                        if Version(gd["left"]) != self.version:
+                            return False
+                elif gd["left"] is None and gd["right"] is not None:  # n@:v
+                    if gd["colen"] is not None:
+                        if Version(gd["right"]) < self.version:
+                            return False
+                    else:
+                        return False
+                elif gd["left"] is None and gd["right"] is None:  # n
+                    if gd["colen"] is not None:
+                        return False
+                else:  # n@v:v
+                    if Version(gd["left"]) > self.version or self.version > Version(gd["right"]):
+                        return False
+                continue  # part has been handled so continue
+
+            # system
+            res = re_fullmatch(system_regex, part)
+            if res is not None:
+                if res.group("system") != self.system:
+                    return False
+                continue  # part has been handled so continue
+
+            # backend
+            res = re_fullmatch(backend_regex, part)
+            if res is not None:
+                if res.group("backend") != self.backend:
+                    return False
+                continue  # part has been handled so continue
+
+            # distro
+            res = re_fullmatch(distro_regex, part)
+            if res is not None:
+                if res.group("distro") != self.distro:
+                    return False
+                continue  # part has been handled so continue
+
+            # dependencies
+            res = re_fullmatch(dependency_regex, part)
+            if res is not None:
+                matched = False
+                for dep in self.dependencies:
+                    if res.group("name") == dep:
+                        matched = True
+                if matched:
+                    continue    # match is found so continue
+
+            # if we get here this part has not been handled
+            return False
+
+        # all parts were handled
+        return True
+
+    def apply_constraint(self, conditional: str, _type: str, spec: str) -> bool:
+        if self.satisfies(conditional):
+            if _type == "dependency":
+                self.dependencies.append(spec)
+            elif _type == "variable":
+                parts = spec.split("=")
+                self.variables[parts[0]] = parts[1]
+            elif _type == "argument":
+                self.arguments.append(spec)
+            elif _type == "template":
+                self.template = spec
+            elif self.files == "file":
+                self.files.append(spec)
+            elif _type == "prolog":
+                self.prolog = spec
+            else:
+                # not a valid type
+                return False
+        else:
+            # spec not added
+            return False
+
+    @property
+    def hash(self) -> str:
+        """Return a hash for this node uniquely identifying it."""
+
+        hash_list: list = list()
+        hash_list.append(self.name)
+        hash_list.append(self.version)
+        hash_list.append(self.system)
+        hash_list.append(self.backend)
+        hash_list.append(self.distro)
+        hash_list.append(",".join(str(x) for x in self.dependencies))
+        hash_list.append(",".join(str(x) for x in self.variables))
+        hash_list.append(",".join(str(x) for x in self.arguments))
+        tf = Path(self.path).joinpath("templates", self.template)
+        if tf.is_file():
+            hash_list.append(sha256(tf.read_bytes()).hexdigest())
+        else:
+            hash_list.append(None)
+        hash_list.append(",".join(str(x) for x in self.files))
+        hash_list.append(self.prolog)
+
+        hash_str: str = "|".join(str(x) for x in hash_list)
+        return sha256(hash_str.encode()).hexdigest()
+
+    @property
+    def id(self) -> str:
+        return self.hash[:7]
+
+    def __hash__(self) -> int:
+        return int(self.hash, 16)
+
+    def __eq__(self, other) -> bool:
+        if not isinstance(other, Image):
+            return False
+        return self.hash == other.hash
+
+    def __lt__(self, other) -> bool:
+        if isinstance(other, Image):
+            return not self.version.preferred(other.version)
+        return False
+
+    def __str__(self) -> str:
+        return "{} {}@{} system={} backend={} distro={}{}".format(
+            self.hash[:7],
+            self.name,
+            self.version,
+            self.system,
+            self.backend,
+            self.distro,
+            "".join(" ^{}".format(x) for x in self.dependencies) if len(self.dependencies) > 0 else ""
+        )
+
+
+class DepOp(Enum):
+    """
+    Specify dependency options
+    """
+    EQ = '='
+    GE = '>='
+    LE = '<='
+    UN = None
+
+
+class Target:
+    """
+    Build specification targets
+    """
+
+    def __init__(self, node: Image, op: DepOp):
+        self.node = node
+        self.op = op
+
+    def __str__(self):
+        return f'Target: {self.op} -> {str(self.node)}'
+
+
+class ImageGraph(nx_DiGraph):
+    def __init__(self, **kwargs) -> None:
+        super().__init__(**kwargs)
+
+    def add_edge(self, u_of_edge: Image, v_of_edge: Image, **attr) -> None:
+        # check that edge endpoint are in graph
+        if self.has_node(u_of_edge) and self.has_node(v_of_edge):
+            super().add_edge(u_of_edge, v_of_edge, **attr)
+        else:
+            raise InvalidDependencySpecification(f'{v_of_edge.name}@{v_of_edge.version}',
+                                                 u_of_edge.name, u_of_edge.version,
+                                                 Path.joinpath(u_of_edge.path, 'specs.yaml'))
+
+        # check that graph is still a DAG
+        if not nx_is_directed_acyclic_graph(self):
+            cycle = nx_find_cycle(self)
+            raise EdgeViolatesDAG(u_of_edge, v_of_edge, cycle)
+
+    def get_similar_nodes(self, node: Image) -> set:
+        similar = set()
+        for n in self.nodes:
+            if n.satisfies(node.name):
+                similar.add(n)
+        return similar
+
+    def get_dependencies(self, node: Image) -> set[Image]:
+        # had to add this wrapper because nx.neighbors was dropping the attributes of some nodes (cuda, python)
+        deps = set()
+        for node in nx_neighbors(self, node):
+            for n in self.nodes:
+                if n == node:
+                    deps.add(n)
+        # will contact the maintainers of networkx at some point
+
+        return deps
+
+    def is_above(self, u_node: Image, v_node: Image) -> bool:
+        """
+        Test if one node is above another in the dependency tree
+        """
+        return nx_has_path(self, u_node, v_node)
+
+    def _is_valid_build_tuple(self, bt: tuple[Image]) -> bool:
+        """
+        Verify that all the dependencies of a build tuple can be met.
+        """
+        valid = True
+
+        # check for similar images
+        for i0 in range(len(bt)):
+            for i2 in bt[i0 + 1:]:
+                if bt[i0].satisfies(i2.name):
+                    valid = False
+
+        # check that all images exist
+        for node in bt:
+            if not self.has_node(node):
+                valid = False
+
+        # break prematurely if the first two checks fail
+        if not valid:
+            return valid
+
+        # check that deps in build tuple
+        for node in bt:
+            deps = self.get_dependencies(node)
+
+            # group deps
+            grouped = dict()
+            for d in deps:
+                if d.name not in grouped:
+                    grouped[d.name] = set()
+                grouped[d.name].add(d)
+
+            # check that the needed dependency exists
+            for g in grouped:
+                if grouped[g].isdisjoint(bt):
+                    valid = False
+
+        return valid
+
+    def create_build_recipe(self, targets: list[Target]) -> tuple:
+
+        # check if all the targets exist
+        for node in targets:
+            if len(self.get_similar_nodes(node.node)) < 1:
+                raise NoAvailableBuild(f"The build target {node.node} does not exist!")
+
+        # init build set and priority list
+        build_set = set()
+        priority_list = list()
+
+        # add similar to build set
+        for target in targets:
+            build_set.update(self.get_similar_nodes(target.node))
+            # make sure to update priority
+            if target.node.name not in priority_list:
+                priority_list.append(target.node.name)
+
+        # add deps to build set
+        while True:
+            build_set_length = len(build_set)
+
+            for node in build_set.copy():
+                dependencies = self.get_dependencies(node)
+                for d in dependencies:
+                    build_set.add(d)
+                    if d.name not in priority_list:
+                        priority_list.append(d.name)
+
+            # loop until all dependencies are added
+            if build_set_length == len(build_set):
+                break
+
+        # apply constraints
+        for target in targets:
+            for node in build_set.copy():
+                if node.satisfies(target.node.name):
+                    if target.op == DepOp.EQ and node.version != target.node.version:
+                        build_set.remove(node)
+                    elif target.op == DepOp.GE and node.version < target.node.version:
+                        build_set.remove(node)
+                    elif target.op == DepOp.LE and node.version > target.node.version:
+                        build_set.remove(node)
+
+        # group deps
+        grouped = dict()
+        for node in build_set:
+            if node.name not in grouped:
+                grouped[node.name] = set()
+            grouped[node.name].add(node)
+        # sort deps so that the highest versions of images further up the dep tree will be chosen
+        prioritized_list_group = list()
+        for group in priority_list:
+            tmp = list(grouped[group])
+            tmp.sort(reverse=True)
+            prioritized_list_group.append(tmp)
+        # get permutations
+        permutations = get_permutations(0, prioritized_list_group)
+
+        # return valid build tuple
+        for p in permutations:
+
+            # clean up permutation
+            clean_p = set()
+            for n in p:
+                for t in targets:
+                    con_targ = None
+                    for nt in [x for x in p]:
+                        if nt.satisfies(t.node.name):
+                            con_targ = nt
+                            break
+                    if self.is_above(con_targ, n):
+                        clean_p.add(n)
+                        break
+
+            if self._is_valid_build_tuple(tuple(clean_p)):
+                # order build
+                build_list = list()
+                processed = set()
+                unprocessed = clean_p.copy()
+                while len(unprocessed) > 0:
+                    level_holder = list()
+                    for node in unprocessed.copy():
+                        deps = set(self.get_dependencies(node)).intersection(clean_p)
+                        if deps.issubset(processed):
+                            level_holder.append(node)
+                    level_holder.sort()
+                    for node in level_holder:
+                        processed.add(node)
+                        unprocessed.remove(node)
+                        build_list.append(node)
+
+                return tuple(build_list)
+
+        # if we got here no valid build tuple could be found
+        raise NoAvailableBuild("No Available build!")
+
+
+class ImageRepo:
+    def __init__(self) -> None:
+        # constraint(image, condition, type, spec, scope)
+        self.constraints: list[tuple[str, str, str, str, str]] = list()
+        self.images: set[Image] = set()
+
+    def import_from_dir(self, path: str) -> None:
+        """Add Images from path."""
+        p = Path(path)
+        if not p.is_dir():
+            raise NotADirectoryError(f"Image path {path} is not a directory!")
+
+        for name in [x for x in p.iterdir() if x.is_dir() and x.name[0] != '.']:
+            with open(name.joinpath("specs.yaml"), "r") as fi:
+                specs = yaml_safe_load(fi)
+                # add versions
+                for version in specs["versions"]:
+                    image = Image(
+                        name.name,
+                        version["spec"],
+                        config.get("velocity:system"),
+                        config.get("velocity:backend"),
+                        config.get("velocity:distro"),
+                        str(name)
+                    )
+                    if "when" in version:
+                        if image.satisfies(version["when"]):
+                            self.images.add(image)
+                    else:
+                        self.images.add(image)
+
+                # add constraints
+                # dependencies
+                if "dependencies" in specs:
+                    for dependency in specs["dependencies"]:
+                        self.constraints.append((
+                            name.name,
+                            dependency["when"] if "when" in dependency else "",
+                            "dependency",
+                            dependency["spec"],
+                            dependency["scope"] if "scope" in dependency else "image"
+                        ))
+                # templates
+                if "templates" in specs:
+                    for template in specs["templates"]:
+                        self.constraints.append((
+                            name.name,
+                            template["when"] if "when" in template else "",
+                            "template",
+                            template["path"],
+                            template["scope"] if "scope" in template else "image"
+                        ))
+                # arguments
+                if "arguments" in specs:
+                    for argument in specs["arguments"]:
+                        self.constraints.append((
+                            name.name,
+                            argument["when"] if "when" in argument else "",
+                            "argument",
+                            argument["value"],
+                            argument["scope"] if "scope" in argument else "image"
+                        ))
+                # variables
+                if "variables" in specs:
+                    for variable in specs["variables"]:
+                        self.constraints.append((
+                            name.name,
+                            variable["when"] if "when" in variable else "",
+                            "variable",
+                            "{}={}".format(variable["name"], variable["value"]),
+                            variable["scope"] if "scope" in variable else "image"
+                        ))
+                # files
+                if "files" in specs:
+                    for file in specs["files"]:
+                        self.constraints.append((
+                            name.name,
+                            file["when"] if "when" in file else "",
+                            "file",
+                            file["name"],
+                            file["scope"] if "scope" in file else "image"
+                        ))
+                # prologs
+                if "prologs" in specs:
+                    for prolog in specs["prologs"]:
+                        self.constraints.append((
+                            name.name,
+                            prolog["when"] if "when" in prolog else "",
+                            "prolog",
+                            prolog["script"],
+                            prolog["scope"] if "scope" in prolog else "image"
+                        ))
+
+    def create_build_recipe(self, targets: list[str]) -> tuple:
+        images = deepcopy(self.images)
+
+        build_targets = list()
+        targs = list()
+        for t in targets:
+            res = re_fullmatch(
+                r"^(?P<name>[a-zA-Z0-9-]+)(?:(?:@(?P<left>[\d\.]+)(?!@))?(?:@?(?P<colen>:)(?P<right>[\d\.]+)?)?)?$",
+                t
+            )
+            if res is not None:
+                gd: dict = res.groupdict()
+                if gd["left"] is not None and gd["right"] is None:  # n@v: or n@v
+                    if gd["colen"] is not None:
+                        t = Image(
+                                gd["name"],
+                                gd["left"],
+                                config.get("velocity:system"),
+                                config.get("velocity:backend"),
+                                config.get("velocity:distro"),
+                                ""
+                            )
+                        build_targets.append(Target(
+                            t,
+                            DepOp.GE
+                        ))
+                        targs.append(t)
+                    else:
+                        t = Image(
+                                gd["name"],
+                                gd["left"],
+                                config.get("velocity:system"),
+                                config.get("velocity:backend"),
+                                config.get("velocity:distro"),
+                                ""
+                            )
+                        build_targets.append(Target(
+                            t,
+                            DepOp.EQ
+                        ))
+                        targs.append(t)
+                elif gd["left"] is None and gd["right"] is not None:  # n@:v
+                    if gd["colen"] is not None:
+                        t = Image(
+                                gd["name"],
+                                gd["right"],
+                                config.get("velocity:system"),
+                                config.get("velocity:backend"),
+                                config.get("velocity:distro"),
+                                ""
+                            )
+                        build_targets.append(Target(
+                            t,
+                            DepOp.LE
+                        ))
+                        targs.append(t)
+                    else:
+                        raise InvalidImageVersionError()
+                elif gd["left"] is None and gd["right"] is None:  # n
+                    if gd["colen"] is not None:
+                        raise InvalidImageVersionError()
+                    else:
+                        t = Image(
+                                gd["name"],
+                                "",
+                                config.get("velocity:system"),
+                                config.get("velocity:backend"),
+                                config.get("velocity:distro"),
+                                ""
+                            )
+                        build_targets.append(Target(
+                            t,
+                            DepOp.EQ
+                        ))
+                        targs.append(t)
+                else:  # n@v:v
+                    t = Image(
+                            gd["name"],
+                            gd["left"],
+                            config.get("velocity:system"),
+                            config.get("velocity:backend"),
+                            config.get("velocity:distro"),
+                            ""
+                        )
+                    build_targets.append(Target(
+                        t,
+                        DepOp.GE
+                    ))
+                    targs.append(t)
+                    t = Image(
+                            gd["name"],
+                            gd["right"],
+                            config.get("velocity:system"),
+                            config.get("velocity:backend"),
+                            config.get("velocity:distro"),
+                            ""
+                        )
+                    build_targets.append(Target(
+                        t,
+                        DepOp.LE
+                    ))
+                    targs.append(t)
+            else:
+                raise NoAvailableBuild("No available build!")
+
+        # apply constraints
+        for constraint in self.constraints:
+            if constraint[4] == "build":
+                for targ in targs:
+                    if targ.satisfies(constraint[1]):
+                        for image in images:
+                            image.apply_constraint(
+                                constraint[0],
+                                constraint[2],
+                                constraint[3]
+                            )
+
+            else:   # default is image
+                for image in images:
+                    image.apply_constraint(
+                        "{} {}".format(constraint[0], constraint[1]),
+                        constraint[2],
+                        constraint[3]
+                    )
+
+        ig = ImageGraph()
+        for image in images:
+            ig.add_node(image)
+        for image in images:
+            for dep in image.dependencies:
+                for di in images:
+                    if di.satisfies(dep):
+                        ig.add_edge(image, di)
+
+        return ig.create_build_recipe(build_targets)
+
diff --git a/lib/graph.py b/src/velocity/_graph_old.py
similarity index 99%
rename from lib/graph.py
rename to src/velocity/_graph_old.py
index 5c5f7ae..f3eadeb 100644
--- a/lib/graph.py
+++ b/src/velocity/_graph_old.py
@@ -3,7 +3,7 @@
 import networkx as nx
 from enum import Enum
 from pathlib import Path
-from lib.exceptions import EdgeViolatesDAG, InvalidDependencySpecification, NoAvailableBuild
+from ._exceptions import EdgeViolatesDAG, InvalidDependencySpecification, NoAvailableBuild
 
 
 def get_permutations(idx: int, sets: list[list]):
diff --git a/lib/print.py b/src/velocity/_print.py
similarity index 100%
rename from lib/print.py
rename to src/velocity/_print.py
diff --git a/lib/__init__.py b/tests/__init__.py
similarity index 100%
rename from lib/__init__.py
rename to tests/__init__.py
diff --git a/tests/test__config.py b/tests/test__config.py
new file mode 100644
index 0000000..9ce92ee
--- /dev/null
+++ b/tests/test__config.py
@@ -0,0 +1,59 @@
+from unittest import TestCase
+from src.velocity._config import validate_and_generate_config
+
+TEST_SCHEMA = {
+    "type": dict,
+    "properties": {
+        "test_dict": {
+            "type": dict,
+            "properties": {
+                "test_list": {},
+                "test_str": {},
+                "test_bool": {}
+            }
+        },
+        "missing_dict": {}
+    }
+}
+
+
+class Test(TestCase):
+    """
+    def test_validate_config(self):
+        # misc
+        self.assertFalse(validate_and_generate_config({}, {}))
+        self.assertFalse(validate_and_generate_config(1, {}))
+
+        # dict
+        ts = {
+            "type": dict,
+            "required": True,
+            "auto": False,
+            "cardinality": "one",
+            "properties": {}
+        }
+        self.assertTrue(validate_and_generate_config({}, ts))
+        self.assertFalse(validate_and_generate_config(None, ts))
+        self.assertFalse(validate_and_generate_config({"test": 0}, ts))
+
+        ts = {
+            "type": dict,
+            "required": True,
+            "auto": False,
+            "cardinality": "one",
+            "properties": {
+                "test": {
+                    "type": bool
+                }
+            }
+        }
+        self.assertFalse(validate_and_generate_config({"test": True}, ts))
+
+        # list
+
+        # str
+
+        # bool
+
+        self.fail()
+        """
diff --git a/tests/test__graph.py b/tests/test__graph.py
new file mode 100644
index 0000000..e94a65f
--- /dev/null
+++ b/tests/test__graph.py
@@ -0,0 +1,197 @@
+from unittest import TestCase
+from re import compile
+from src.velocity._graph import (
+    VERSION_REGEX,
+    Version,
+    Image
+)
+
+
+class Test(TestCase):
+    def test_version_regex(self):
+        p = compile(VERSION_REGEX)
+
+        # test 2.3.5-s90er
+        m = p.search("2.3.5-s90er")
+        self.assertEqual("2", m.group("major"))
+        self.assertEqual("3", m.group("minor"))
+        self.assertEqual("5", m.group("patch"))
+        self.assertEqual("s90er", m.group("suffix"))
+
+        # test 2.3.5
+        m = p.search("2.3.5")
+        self.assertEqual("2", m.group("major"))
+        self.assertEqual("3", m.group("minor"))
+        self.assertEqual("5", m.group("patch"))
+        self.assertIsNone(m.group("suffix"))
+
+        # test 2.3
+        m = p.search("2.3")
+        self.assertEqual("2", m.group("major"))
+        self.assertEqual("3", m.group("minor"))
+        self.assertIsNone(m.group("patch"))
+        self.assertIsNone(m.group("suffix"))
+
+        # test 2
+        m = p.search("2")
+        self.assertEqual("2", m.group("major"))
+        self.assertIsNone(m.group("minor"))
+        self.assertIsNone(m.group("patch"))
+        self.assertIsNone(m.group("suffix"))
+
+
+class TestVersion(TestCase):
+    def test_init(self):
+        # test 2.3.5-s90er
+        v = Version("2.3.5-s90er")
+        self.assertEqual(2, v.major)
+        self.assertEqual(3, v.minor)
+        self.assertEqual(5, v.patch)
+        self.assertEqual("s90er", v.suffix)
+
+        # test 2.3.5
+        v = Version("2.3.5")
+        self.assertEqual(2, v.major)
+        self.assertEqual(3, v.minor)
+        self.assertEqual(5, v.patch)
+        self.assertIsNone(v.suffix)
+
+        # test 2.3
+        v = Version("2.3")
+        self.assertEqual(2, v.major)
+        self.assertEqual(3, v.minor)
+        self.assertIsNone(v.patch)
+        self.assertIsNone(v.suffix)
+
+        # test 2
+        v = Version("2")
+        self.assertEqual(2, v.major)
+        self.assertIsNone(v.minor)
+        self.assertIsNone(v.patch)
+        self.assertIsNone(v.suffix)
+
+    def test_str(self):
+        # test 2.3.5-s90er
+        v = Version("2.3.5-s90er")
+        self.assertEqual("2.3.5-s90er", v.__str__())
+
+        # test 2.3.5
+        v = Version("2.3.5")
+        self.assertEqual("2.3.5", v.__str__())
+
+        # test 2.3
+        v = Version("2.3")
+        self.assertEqual("2.3", v.__str__())
+
+        # test 2
+        v = Version("2")
+        self.assertEqual("2", v.__str__())
+
+    def test_comparisons(self):
+        # test 2.3.4 vs 2.3.4
+        one = Version("2.3.4")
+        two = Version("2.3.4")
+        self.assertTrue(one == two)
+        self.assertFalse(one > two)
+        self.assertTrue(one >= two)
+        self.assertFalse(one < two)
+        self.assertTrue(one <= two)
+
+        # test 2.3.4-rc1 vs 2.3.4-rc1
+        one = Version("2.3.4-rc1")
+        two = Version("2.3.4-rc1")
+        self.assertTrue(one == two)
+        self.assertFalse(one > two)
+        self.assertTrue(one >= two)
+        self.assertFalse(one < two)
+        self.assertTrue(one <= two)
+
+        # test 2.3.4 vs 2.3.5
+        one = Version("2.3.4")
+        two = Version("2.3.5")
+        self.assertFalse(one == two)
+        self.assertFalse(one > two)
+        self.assertFalse(one >= two)
+        self.assertTrue(one < two)
+        self.assertTrue(one <= two)
+
+        # test 2.3.6 vs 2.3.4
+        one = Version("2.3.6")
+        two = Version("2.3.4")
+        self.assertFalse(one == two)
+        self.assertTrue(one > two)
+        self.assertTrue(one >= two)
+        self.assertFalse(one < two)
+        self.assertFalse(one <= two)
+
+        # test 2.3.4 vs 2.3.4-rc1
+        one = Version("2.3.4")
+        two = Version("2.3.4-rc1")
+        self.assertTrue(one == two)
+        self.assertFalse(one > two)
+        self.assertTrue(one >= two)
+        self.assertFalse(one < two)
+        self.assertTrue(one <= two)
+
+        # test 2.3.4 vs 2.3 & 2
+        one = Version("2.3.4")
+        two = Version("2.3")
+        self.assertTrue(one == two)
+        self.assertFalse(one > two)
+        self.assertTrue(one >= two)
+        self.assertTrue(one <= two)
+        self.assertFalse(one < two)
+        two = Version("2")
+        self.assertTrue(one == two)
+        self.assertFalse(one > two)
+        self.assertTrue(one >= two)
+        self.assertTrue(one <= two)
+        self.assertFalse(one < two)
+
+
+class TestImage(TestCase):
+    def test_satisfies_spec(self):
+        image = Image("gcc", "12.3.0", "frontier", "apptainer", "ubuntu", "")
+        image2 = Image("test", "1", "frontier", "apptainer", "ubuntu", "")
+        
+        # name
+        self.assertTrue(image.satisfies("gcc"))
+        self.assertTrue(image2.satisfies("test"))
+        self.assertFalse(image.satisfies("ubuntu"))
+        
+        # version
+        self.assertTrue(image.satisfies("gcc@12.3.0"))
+        self.assertTrue(image.satisfies("gcc@12.3"))
+        self.assertTrue(image.satisfies("gcc@12"))
+        self.assertTrue(image.satisfies("gcc@12.3.0:"))
+        self.assertTrue(image.satisfies("gcc@:12.3.0"))
+        self.assertTrue(image.satisfies("gcc@11.0.0:13.0.0"))
+        self.assertTrue(image.satisfies("gcc@:12"))
+        self.assertTrue(image.satisfies("gcc gcc@12.3.0"))
+
+        self.assertFalse(image.satisfies("gcc@14.0.0"))
+        self.assertFalse(image.satisfies("gcc@1"))
+        self.assertFalse(image.satisfies("ubuntu@12.3.0"))
+        self.assertFalse(image.satisfies("12.3.0"))
+        self.assertFalse(image.satisfies("gcc@13.0.0:13.2.0"))
+
+        # system
+        self.assertTrue(image.satisfies("system=frontier"))
+        self.assertFalse(image.satisfies("system=summit"))
+        self.assertFalse(image.satisfies("frontier"))
+
+        # backend
+        self.assertTrue(image.satisfies("backend=apptainer"))
+        self.assertFalse(image.satisfies("backend=podman"))
+        self.assertFalse(image.satisfies("apptainer"))
+
+        # distro
+        self.assertTrue(image.satisfies("distro=ubuntu"))
+        self.assertFalse(image.satisfies("dictro=opensuse"))
+        self.assertFalse(image.satisfies("ubuntu"))
+
+    #def test_add_spec(self):
+    #    self.fail()
+
+    #def test_hash(self):
+    #    self.fail()

From 1667dccca446451481557a6835d525bb3c8a74c1 Mon Sep 17 00:00:00 2001
From: Asa Rentschler <rentschleraj@ornl.gov>
Date: Fri, 6 Sep 2024 14:40:06 -0400
Subject: [PATCH 02/10] Cleaned up the backend and added new features

---
 pyproject.toml             |  52 ++-
 src/velocity/__init__.py   |   4 +
 src/velocity/_backends.py  | 687 +++++++++++++++++++++----------------
 src/velocity/_config.py    | 251 ++------------
 src/velocity/_graph_old.py | 519 ----------------------------
 src/velocity/_print.py     |  60 ++--
 tests/test__config.py      |  82 ++---
 7 files changed, 546 insertions(+), 1109 deletions(-)
 delete mode 100644 src/velocity/_graph_old.py

diff --git a/pyproject.toml b/pyproject.toml
index 491927a..e077167 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -15,9 +15,59 @@ dependencies = [
     "networkx",
     "colorama",
     "editor",
-    "loguru"
+    "loguru",
+    "sys",
+    "shutil"
 ]
 
 [project.urls]
 Homepage = "https://github.com/olcf/velocity"
 Issues = "https://github.com/olcf/velocity/issues"
+
+[tool.ruff]
+exclude = [
+    ".bzr",
+    ".direnv",
+    ".eggs",
+    ".git",
+    ".git-rewrite",
+    ".hg",
+    ".ipynb_checkpoints",
+    ".mypy_cache",
+    ".nox",
+    ".pants.d",
+    ".pyenv",
+    ".pytest_cache",
+    ".pytype",
+    ".ruff_cache",
+    ".svn",
+    ".tox",
+    ".venv",
+    ".vscode",
+    "__pypackages__",
+    "_build",
+    "buck-out",
+    "build",
+    "dist",
+    "node_modules",
+    "site-packages",
+    "venv",
+]
+line-length = 120
+indent-width = 4
+target-version = "py310"
+
+[tool.ruff.lint]
+select = ["E4", "E7", "E9", "F"]
+ignore = []
+fixable = ["ALL"]
+unfixable = []
+dummy-variable-rgx = "^(_+|(_+[a-zA-Z0-9_]*[a-zA-Z0-9]+?))$"
+
+[tool.ruff.format]
+quote-style = "double"
+indent-style = "space"
+skip-magic-trailing-comma = false
+line-ending = "auto"
+docstring-code-format = true
+docstring-code-line-length = "dynamic"
diff --git a/src/velocity/__init__.py b/src/velocity/__init__.py
index 6402a0d..2da6386 100644
--- a/src/velocity/__init__.py
+++ b/src/velocity/__init__.py
@@ -3,3 +3,7 @@
 __version__ = "0.0.0"
 
 config.set("velocity:version", __version__)
+
+__all__ = [
+    config
+]
diff --git a/src/velocity/_backends.py b/src/velocity/_backends.py
index 83918c0..61c2c5c 100644
--- a/src/velocity/_backends.py
+++ b/src/velocity/_backends.py
@@ -1,364 +1,451 @@
-import re
-from hashlib import sha256
+"""Velocity backends."""
+
+from re import Match as re_Match, sub as re_sub, match as re_match
+from loguru import logger
+from shutil import which as shutil_which
 from pathlib import Path
 from abc import ABC, abstractmethod
-from ._exceptions import (UndefinedVariableInTemplate, RepeatedSection, LineOutsideOfSection, TemplateSyntaxError,
-                         BackendNotSupported)
+from ._exceptions import (
+    RepeatedSection,
+    LineOutsideOfSection,
+    TemplateSyntaxError,
+    BackendNotSupported,
+    BackendNotAvailable,
+)
 from ._config import config
+from ._graph import Image
+
 
+def _substitute(text: str, variables: dict[str, str], regex: str) -> str:
+    """Substitute a variables in a string by a regex."""
 
-def _substitute(text: str, variables: dict, regex: str) -> str:
-    def _replace(m: re.Match):
-        """
-            Substitute a variables in a string by a regex.
-        """
-        if m.group(1) in variables:
+    def _replace(m: re_Match):
+        try:
             return str(variables[m.group(1)])
-        else:
-            raise UndefinedVariableInTemplate(m.group(1))
+        except KeyError:
+            logger.warning("The variable '{}' is undefined. Setting value to ''.".format(m.group(1)))
 
-    return re.sub(regex, _replace, text)
+    return re_sub(regex, _replace, text)
 
 
 class Backend(ABC):
-
-    def __init__(self, name: str, variables: dict = None) -> None:
-        self.name = name
-        self.variables = {
-            '__backend__': config.get("velocity:backend"),
-            '__system__': config.get("velocity:system"),
-            '__distro__': config.get("velocity:distro")
-        }
-        if variables is not None:
-            self.variables.update(variables)
-        self.template_sections = [
-            '@from',
-            '@pre',
-            '@arg',
-            '@copy',
-            '@run',
-            '@env',
-            '@label',
-            '@entry',
-            '@post'
-        ]
-
-    @abstractmethod
-    def generate_script(self, file: Path, variables: dict) -> list:
-        """
-        Generate a build script e.g. .dockerfile/.def
-        """
-        pass
-
-    @abstractmethod
-    def generate_build_cmd(self, src: str, dest: str, args: list = None) -> str:
-        """
-        Generate CLI command to build image
-        """
-        pass
-
-    @abstractmethod
-    def format_image_name(self, path: Path, tag: str) -> str:
-        pass
-
-    @abstractmethod
-    def clean_up_old_image_cmd(self, name: str) -> str:
-        pass
-
-    def _get_sections(self, template: list) -> dict:
-        sections = dict()
-
-        past_sections = list()
-        current_section = None
+    """Abstract class for velocity backend."""
+
+    template_sections: list[str] = [
+        "@from",
+        "@pre",
+        "@copy",
+        "@run",
+        "@env",
+        "@label",
+        "@entry",
+        "@post",
+    ]
+
+    @classmethod
+    def _get_sections(cls, template: list[str]) -> dict[str, list[str]]:
+        """Retrieve the sections from a VTMP."""
+
+        sections: dict[str, list[str]] = dict()
+        past_sections: list[str] = list()
+        current_section: str | None = None
 
         for line in template:
-            if line in self.template_sections:
+            # if a line contains a section header
+            if line in cls.template_sections:
+                # move the current section to past_sections
                 if current_section is not None:
                     past_sections.append(current_section)
 
+                # check for repeated section
                 if line in past_sections:
-                    raise RepeatedSection(line)
+                    raise RepeatedSection(f"You have more than one '{line}' section in your template!")
                 else:
                     current_section = line
                     if current_section not in sections:
                         sections[current_section] = list()
+
             else:
+                # handel content lines
                 if current_section is None:
-                    raise LineOutsideOfSection
+                    raise LineOutsideOfSection("You have a line outside of a section in your template!")
                 else:
                     sections[current_section].append(line)
 
+        # remove empty sections
+        del_list: list[str] = list()
+        for sec in sections:
+            if len(sections[sec]) == 0:
+                del_list.append(sec)
+        for sec in del_list:
+            del sections[sec]
+
         return sections
 
-    def _load_template(self, file: Path, variables: dict) -> list:
-        variables.update(self.variables)
-        template = list()
-        with open(file, 'r') as file:
-            contents = file.readlines()
-            variables.update({'__hash__': sha256(''.join(contents).encode('utf-8')).hexdigest()})
+    @classmethod
+    def _filter_content(cls, image: Image, text: str) -> str:
+        """Filter conditionals and white space from a template line."""
+        # handle conditionals
+        res: re_Match[str] = re_match(r".*(\?\?([\S ]*)\|>(.*)\?\?).*", text)
+        if res is not None:
+            if image.satisfies(res.group(2)):
+                text = re_sub(r".*(\?\?.*\?\?).*", res.group(3), text)
+            else:
+                text = ""
+
+        # remove comments, newlines, and superfluous white space
+        text = re_sub(r"###.*", "", text)
+        text = re_sub(r"\n", "", text)
+        text = re_sub(r"^\s+|\s+$", "", text)
+
+        return text
+
+    @classmethod
+    def _load_template(cls, image: Image, variables: dict[str, str]) -> list[str]:
+        """Load a template and parse it."""
+        template: list[str] = list()
+        with open(
+            Path(image.path).joinpath("templates", "{}.vtmp".format(image.template)),
+            "r",
+        ) as file:
+            contents: list[str] = file.readlines()
             for line in contents:
-                sf_con = self._filter_content(
-                    _substitute(
-                        line,
-                        variables,
-                        r'(?<!\\)%{{\s*(\w+)\s*}}'
-                    )
-                )
-                if sf_con != '':
-                    template.append(sf_con)
+                fcon: str = cls._filter_content(image, _substitute(line, variables, r"{{\s*(\S+)\s*}}"))
+                if fcon != "":
+                    template.append(fcon)
         return template
 
-    def _filter_content(self, text: str) -> str:
-        # remove comments, newlines, and superfluous white space
-        t = re.sub(r'#.*', '', text)
-        t = re.sub(f'\n', '', t)
-        t = t.strip(' ')
-
-        # is this line needed for this backend?
-        if t == '':
-            return ''
-        elif t[0] == '?' and f'?{self.name}' not in t:
-            return ''
-        else:
-            return re.sub(r'\?\w*', '', t).strip(' ')
+    def __init__(self, name: str, executable: str) -> None:
+        self.name: str = name
+        self.executable: str = executable
 
+    def generate_script(self, image: Image, variables: dict[str, str]) -> list[str]:
+        """Generate a build script e.g. .dockerfile/.def"""
+        template: list[str] = self._load_template(image, variables)
+        sections: dict[str, list[str]] = self._get_sections(template)
+        script: list[str] = list()
 
-class Podman(Backend):
+        # @from
+        try:
+            if len(sections["@from"]) != 1:
+                raise TemplateSyntaxError(
+                    "You can only have one source in the @from section!",
+                )
+            elif len(sections["@from"][0].split()) != 1:
+                raise TemplateSyntaxError("Your source must be a single string!", sections["@from"][0])
+            else:
+                script.extend(self._from(sections["@from"]))
+        except KeyError:
+            raise TemplateSyntaxError("You must have an @from section in your template!")
+        # arguments
+        script.extend(self._arguments(sections))
+        # @pre
+        if "@pre" in sections:
+            script.extend(self._literal_section(sections["@pre"]))
+        # @copy
+        if "@copy" in sections:
+            script.extend(self._copy(sections["@copy"]))
+        # @run
+        if "@run" in sections:
+            env_ext: list[str] = list()
+            script.extend(self._run(sections["@run"], env_ext))
+            if "@env" in sections:
+                sections["@env"].extend(env_ext)
+            else:
+                sections["@env"] = env_ext
+        # @env
+        if "@env" in sections:
+            script.extend(self._env(sections["@env"]))
+        # @label
+        if "@label" in sections:
+            script.extend(self._label(sections["@label"]))
+        # @entry
+        if "@entry" in sections:
+            if len(sections["@entry"]) != 1:
+                raise TemplateSyntaxError("You can only have one entrypoint!")
+            script.extend(self._entry(sections["@entry"]))
+        # @post
+        if "@post" in sections:
+            script.extend(self._literal_section(sections["@post"]))
 
-    def __init__(self, variables: dict):
-        super().__init__(name='podman', variables=variables)
+        return script
 
-    def generate_script(self, file: Path, variables: dict) -> list:
-        script = list()
-        template = self._load_template(file, variables)
-        sections = self._get_sections(template)
+    def is_available(self) -> bool:
+        """Check if the current system has the requested backend."""
+        if shutil_which(self.executable) is None:
+            return False
+        return True
 
-        # @from
-        if '@from' not in sections:
-            raise TemplateSyntaxError("You must have a '@from' section in your template!")
-        elif len(sections['@from']) != 1:
-            raise TemplateSyntaxError("You can only have one source in your template!", )
-        elif len(sections['@from'][0].split()) != 1:
-            raise TemplateSyntaxError("Your source must be a single string!", sections['@from'][0])
-        else:
-            script.append(f"FROM {sections['@from'][0]}")
-
-        # @arg
-        vbs = dict()
-        if '@arg' in sections:
-            if len(sections['@arg']) > 0:
-                script.append('')
-                for a in sections['@arg']:
-                    if len(a.split()) != 1:
-                        raise TemplateSyntaxError("Arguments cannot have spaces in their names!")
-                    else:
-                        script.append(f'ARG {a}')
-                        vbs[a] = f'${a}'
-        for si in sections.keys():
-            for li in range(len(sections[si])):
-                sections[si][li] = _substitute(sections[si][li], vbs, r'(?<!\\)@\((\w*)\)')
+    @abstractmethod
+    def _from(self, contents: list[str]) -> list[str]:
+        """Handle the @from section."""
 
-        # @copy
-        if '@copy' in sections:
-            if len(sections['@copy']) > 0:
-                script.append('')
-                for ln in sections['@copy']:
-                    if len(ln.split()) != 2:
-                        raise TemplateSyntaxError("Your '@copy' can only have one source and destination!", ln)
-                    script.append(f"COPY {ln}")
-
-        if '@run' in sections:
-            if len(sections['@run']) > 0:
-                script.append('')
-                for cmd in sections['@run']:
-                    ln = ''
-                    if cmd == sections['@run'][0]:
-                        ln += 'RUN '
-                    else:
-                        ln += '    '
-                    ln += cmd
-                    if cmd != sections['@run'][-1]:
-                        ln += ' && \\'
-                    script.append(ln)
-
-        if '@env' in sections:
-            if len(sections['@env']) > 0:
-                script.append('')
-                for env in sections['@env']:
-                    parts = env.split()
-                    ln = ''
-                    if env == sections['@env'][0]:
-                        ln += 'ENV '
-                    else:
-                        ln += '    '
-                    ln += f"{parts[0]}=\"{env.lstrip(parts[0]).strip(' ')}\""
-                    if env != sections['@env'][-1]:
-                        ln += ' \\'
-                    script.append(ln)
-
-        if '@label' in sections:
-            if len(sections['@label']) > 0:
-                script.append('')
-                for label in sections['@label']:
-                    parts = label.split()
-                    if len(parts) != 2:
-                        raise TemplateSyntaxError("Labels must have two parts!", label)
-                    ln = ''
-                    if label == sections['@label'][0]:
-                        ln += 'LABEL '
-                    else:
-                        ln += '    '
-                    ln += f"{parts[0]}=\"{label.lstrip(parts[0]).strip(' ')}\""
-                    if label != sections['@label'][-1]:
-                        ln += ' \\'
-                    script.append(ln)
-
-        if '@entry' in sections:
-            if len(sections['@entry']) != 1:
-                raise TemplateSyntaxError("You must have one and only one entrypoint!")
-            else:
-                script.append('')
-                script.append(f"ENTRYPOINT {str(sections['@entry'][0].split())}")
+    @abstractmethod
+    def _arguments(self, all_contents: dict[str, list[str]]) -> list[str]:
+        """Handle arguments."""
 
-        script.append('')
+    @abstractmethod
+    def _copy(self, contents: list[str]) -> list[str]:
+        """Handle the @copy section."""
 
-        return script
+    @abstractmethod
+    def _run(self, contents: list[str], label_contents: list[str]) -> list[str]:
+        """Handle the @run section. If any !enver directives are found, return a list for the @env section."""
 
-    def generate_build_cmd(self, src: str, dest: str, args: list = None) -> str:
-        arguments = ' ' + ' '.join(
-            _ for _ in args
-        ) if args is not None else ''
-        script = f' -f {src}'
-        destination = f' -t {dest}'
-        end = ' .;'
+    @abstractmethod
+    def _env(self, contents: list[str]) -> list[str]:
+        """Handle the @env section."""
 
-        cmd = ['podman build', arguments, script, destination, end]
-        return ''.join(_ for _ in cmd)
+    @abstractmethod
+    def _label(self, contents: list[str]) -> list[str]:
+        """Handle the @label section."""
 
-    def format_image_name(self, path: Path, tag: str) -> str:
-        return f"{'localhost/' if '/' not in tag else ''}{tag}{':latest' if ':' not in tag else ''}"
+    @abstractmethod
+    def _entry(self, contents: list[str]) -> list[str]:
+        """Handle the @entry section."""
 
-    def clean_up_old_image_cmd(self, name: str) -> str:
-        return f'podman untag {name}'
+    @classmethod
+    def _literal_section(cls, contents: list[str]) -> list[str]:
+        """Handle literal sections."""
+        ret: list = [""]
+        for ln in contents:
+            ret.append(ln.lstrip("|"))
+        return ret
 
+    @abstractmethod
+    def generate_build_cmd(self, src: str, dest: str, args: list[str] = None) -> str:
+        """Generate CLI command to build."""
 
-class Apptainer(Backend):
+    @abstractmethod
+    def format_image_name(self, path: Path, image: Image) -> str:
+        """Create a name for the image build."""
+
+    @abstractmethod
+    def clean_up_old_image_cmd(self, path: Path, name: str) -> str:
+        """Generate CLI command to clean up an old image."""
 
-    def __init__(self, variables: dict):
-        super().__init__(name='apptainer', variables=variables)
 
-    def generate_script(self, file: Path, variables: dict) -> list:
-        script = list()
-        template = self._load_template(file, variables)
-        sections = self._get_sections(template)
+class Podman(Backend):
+    """Podman backend."""
 
-        if '@arg' in sections:
-            if len(sections['@arg']) > 0:
-                vbs = dict()
-                for a in sections['@arg']:
-                    if len(a.split()) != 1:
+    def __init__(self):
+        super().__init__(name="podman", executable="podman")
+
+    def _from(self, contents: list[str]) -> list[str]:
+        return [f"FROM {contents[0]}"]
+
+    def _arguments(self, all_contents: dict[str, list[str]]) -> list[str]:
+        ret: list[str] = list()
+        for si in all_contents.keys():
+            for li in range(len(all_contents[si])):
+                res: re_Match[str] = re_match(r".*(@@\s*(\S+)\s*@@).*", all_contents[si][li])
+                if res is not None:
+                    if len(res.group(2).split()) != 1:
                         raise TemplateSyntaxError("Arguments cannot have spaces in their names!")
                     else:
-                        vbs[a] = '{{ ' + a + ' }}'
-
-                for si in sections.keys():
-                    for li in range(len(sections[si])):
-                        sections[si][li] = _substitute(sections[si][li], vbs, r'(?<!\\)@\((\w*)\)')
-
-        if '@from' not in sections:
-            raise TemplateSyntaxError("You must have a '@from' section in your template!")
-        elif len(sections['@from']) != 1:
-            raise TemplateSyntaxError("You can only have one source in your template!", )
-        elif len(sections['@from'][0].split()) != 1:
-            raise TemplateSyntaxError("Your source must be a single string!", sections['@from'][0])
-        else:
-            if re.match(r'^.*\.sif$', sections['@from'][0]):  #Path(sections['@from'][0]).is_file():
-                script.append('Bootstrap: localimage')
-            elif re.match(r'^.*\/.*:.*$', sections['@from'][0]):
-                script.append('Bootstrap: docker')
+                        ret.append("ARG {}".format(res.group(2)))
+                        all_contents[si][li] = _substitute(
+                            all_contents[si][li],
+                            {res.group(2): "${}".format(res.group(2))},
+                            r"@@\s*(\S+)\s*@@",
+                        )
+        if len(ret) > 0:
+            ret.insert(0, "")
+        return ret
+
+    def _copy(self, contents: list[str]) -> list[str]:
+        ret: list[str] = [""]
+        for ln in contents:
+            if len(ln.split()) != 2:
+                raise TemplateSyntaxError("Entries in @copy can only have one source and destination!", ln)
+            ret.append(f"COPY {ln}")
+        return ret
+
+    def _run(self, contents: list[str], label_contents: list[str]) -> list[str]:
+        ret: list[str] = [""]
+        for cmd in contents:
+            # process !envar directives
+            alt_cmd = cmd
+            if re_match(r"^!envar\s+.*", cmd):
+                res = re_match(r"^!envar\s+(?P<name>\S+)\s+(?P<value>.*)$", cmd)
+                alt_cmd = 'export {name}="{value}"'.format(**res.groupdict())
+                label_contents.append("{name} {value}".format(**res.groupdict()))
+            # generate line
+            ln = ""
+            # place RUN on the first line
+            if cmd == contents[0]:
+                ln += "RUN "
             else:
-                raise TemplateSyntaxError("Unknown source format!", sections['@from'][0])
-            script.append(f"From: {sections['@from'][0]}")
-
-        if '@pre' in sections:
-            if len(sections['@pre']) > 0:
-                script.append('')
-                for ln in sections['@pre']:
-                    script.append(ln.lstrip('|'))
-
-        if '@copy' in sections:
-            if len(sections['@copy']) > 0:
-                script.append('')
-                script.append('%files')
-                for ln in sections['@copy']:
-                    if len(ln.split()) != 2:
-                        raise TemplateSyntaxError("Your '@copy' can only have one source and destination!", ln)
-                    script.append(f"    {ln}")
-
-        if '@run' in sections:
-            if len(sections['@run']) > 0:
-                script.append('')
-                script.append('%post')
-                for cmd in sections['@run']:
-                    script.append(f'    {cmd}')
-
-        if '@env' in sections:
-            if len(sections['@env']) > 0:
-                script.append('')
-                script.append('%environment')
-                for env in sections['@env']:
-                    parts = env.split()
-                    script.append(f"    export {parts[0]}=\"{env.lstrip(parts[0]).strip(' ')}\"")
-
-        if '@label' in sections:
-            if len(sections['@label']) > 0:
-                script.append('')
-                script.append('%labels')
-                for label in sections['@label']:
-                    parts = label.split()
-                    script.append(f"    {parts[0]} {label.lstrip(parts[0]).strip(' ')}")
-
-        if '@entry' in sections:
-            if len(sections['@entry']) != 1:
-                raise TemplateSyntaxError("You must have one and only one entrypoint!")
+                # indent following lines
+                ln += "    "
+            ln += alt_cmd
+            # add '&& \\' to all but the last line
+            if cmd != contents[-1]:
+                ln += " && \\"
+            ret.append(ln)
+        return ret
+
+    def _env(self, contents: list[str]) -> list[str]:
+        ret: list[str] = [""]
+        for env in contents:
+            parts = env.split()
+            # generate line
+            ln = ""
+            # add ENV to the first line
+            if env == contents[0]:
+                ln += "ENV "
             else:
-                script.append('')
-                script.append('%runscript')
-                script.append(f"    {sections['@entry'][0]}")
+                # indent following lines
+                ln += "    "
+            ln += f"{parts[0]}=\"{env.lstrip(parts[0]).strip(' ')}\""
+            # add '\\' to all but the last line
+            if env != contents[-1]:
+                ln += " \\"
+            ret.append(ln)
+        return ret
+
+    def _label(self, contents: list[str]) -> list[str]:
+        ret: list[str] = [""]
+        for label in contents:
+            parts = label.split()
+            if len(parts) != 2:
+                raise TemplateSyntaxError("Label '{}' must have two parts!".format(label))
+            # generate line
+            ln = ""
+            # add LABEL to the first line
+            if label == contents[0]:
+                ln += "LABEL "
+            else:
+                # indent following lines
+                ln += "    "
+            ln += f"{parts[0]}=\"{label.lstrip(parts[0]).strip(' ')}\""
+            # add '\\' to all but the last line
+            if label != contents[-1]:
+                ln += " \\"
+            ret.append(ln)
+        return ret
+
+    def _entry(self, contents: list[str]) -> list[str]:
+        return ["", "ENTRYPOINT {}".format(contents[0].split())]
 
-        if '@post' in sections:
-            if len(sections['@post']) > 0:
-                script.append('')
-                for ln in sections['@post']:
-                    script.append(ln.lstrip('|'))
+    def generate_build_cmd(self, src: str, dest: str, args: list = None) -> str:
+        cmd: list[str] = ["{} build".format(self.executable)]
+        # arguments
+        if args is not None and len(args) > 0:
+            cmd.append(" ".join(_ for _ in args) if args is not None else "")
+        # script
+        cmd.append("-f {}".format(src))
+        # destination
+        cmd.append("-t {}".format(dest))
+        # build dir
+        cmd.append(".")
+        return " ".join(_ for _ in cmd) + ";"
 
-        script.append('')
+    def format_image_name(self, path: Path, tag: str) -> str:
+        return "{}{}{}".format("localhost/" if "/" not in tag else "", tag, ":latest" if ":" not in tag else "")
 
-        return script
+    def clean_up_old_image_cmd(self, path: Path, name: str) -> str:
+        return "podman untag {}".format(name)
 
-    def generate_build_cmd(self, src: str, dest: str, args: list = None) -> str:
-        arguments = ' ' + ' '.join(
-            x for x in args
-        ) if args is not None else ''
-        script = f' {src}'
-        destination = f' {dest}'
-        end = ';'
 
-        cmd = ['apptainer build', arguments, destination, script, end]
-        return ''.join(_ for _ in cmd)
+class Apptainer(Backend):
+    """Apptainer backend."""
+
+    def __init__(self):
+        super().__init__(name="apptainer", executable="apptainer")
+
+    def _from(self, contents: list[str]) -> list[str]:
+        ret: list[str] = list()
+        if re_match(r"^.*\.sif$", contents[0]):
+            ret.append("Bootstrap: localimage")
+        elif re_match(r"^.*\/.*:.*$", contents[0]):
+            ret.append("Bootstrap: docker")
+        else:
+            raise TemplateSyntaxError("Unknown source format in @from!", contents[0])
+        ret.append("From: {}".format(contents[0]))
+        return ret
+
+    def _arguments(self, all_contents: dict[str, list[str]]) -> list[str]:
+        for si in all_contents.keys():
+            for li in range(len(all_contents[si])):
+                res = re_match(r".*(@@\s*(\S+)\s*@@).*", all_contents[si][li])
+                if res is not None:
+                    if len(res.group(2).split()) != 1:
+                        raise TemplateSyntaxError("Arguments cannot have spaces in their names!")
+                    else:
+                        all_contents[si][li] = _substitute(
+                            all_contents[si][li],
+                            {res.group(2): f"{{{{ {res.group(2)} }}}}"},
+                            r"@@\s*(\S+)\s*@@",
+                        )
+        return list()
+
+    def _copy(self, contents: list[str]) -> list[str]:
+        ret: list[str] = ["", "%files"]
+        for ln in contents:
+            if len(ln.split()) != 2:
+                raise TemplateSyntaxError("Your '@copy' can only have one source and destination!", ln)
+            ret.append("    {}".format(ln))
+        return ret
+
+    def _run(self, contents: list[str], label_contents: list[str]) -> list[str]:
+        ret: list[str] = ["", "%post"]
+        for cmd in contents:
+            # handel !envar directives
+            if re_match(r"^!envar\s+.*", cmd):
+                res = re_match(r"^!envar\s+(?P<name>\S+)\s+(?P<value>.*)$", cmd)
+                cmd = 'export {name}="{value}"'.format(**res.groupdict())
+                label_contents.append("{name} {value}".format(**res.groupdict()))
+            ret.append("    {}".format(cmd))
+        return ret
+
+    def _env(self, contents: list[str]) -> list[str]:
+        ret: list[str] = ["", "%environment"]
+        for env in contents:
+            parts = env.split()
+            ret.append('    export {}="{}"'.format(parts[0], env.lstrip(parts[0]).strip(" ")))
+        return ret
+
+    def _label(self, contents: list[str]) -> list[str]:
+        ret: list[str] = ["", "%labels"]
+        for label in contents:
+            parts = label.split()
+            ret.append("    {} {}".format(parts[0], label.lstrip(parts[0]).strip(" ")))
+        return ret
+
+    def _entry(self, contents: list[str]) -> list[str]:
+        return ["", "%runscript", "    {}".format(contents[0])]
+
+    def generate_build_cmd(self, src: str, dest: str, args: list = None) -> str:
+        cmd: list[str] = ["{} build".format(self.executable)]
+        # arguments
+        if args is not None and len(args) > 0:
+            cmd.append(" ".join(_ for _ in args) if args is not None else "")
+        # script
+        cmd.append("{}".format(src))
+        # destination
+        cmd.append("{}".format(dest))
+        return " ".join(_ for _ in cmd) + ";"
 
     def format_image_name(self, path: Path, tag: str) -> str:
-        return f"{Path.joinpath(path, tag)}{'.sif' if '.sif' not in tag else ''}"
+        return "{}{}".format(Path.joinpath(path, tag), ".sif" if ".sif" not in tag else "")
 
-    def clean_up_old_image_cmd(self, name: str) -> str:
-        return 'echo'
+    def clean_up_old_image_cmd(self, path: Path, name: str) -> str:
+        # TODO we need to think about apptainer image caching
+        return "echo"
 
 
-def get_backend(variables: dict) -> Backend:
+def get_backend() -> Backend:
     backend = config.get("velocity:backend")
-    if backend == 'podman':
-        return Podman(variables)
-    elif backend == 'apptainer':
-        return Apptainer(variables)
+    if backend == "podman":
+        b = Podman()
+    elif backend == "apptainer":
+        b = Apptainer()
     else:
         raise BackendNotSupported(backend)
+
+    # check that backend is available
+    if b.is_available():
+        return b
+    else:
+        raise BackendNotAvailable("Your system does not have the '{}' backend".format(b.name))
diff --git a/src/velocity/_config.py b/src/velocity/_config.py
index 502b662..09887cf 100644
--- a/src/velocity/_config.py
+++ b/src/velocity/_config.py
@@ -1,212 +1,32 @@
+"""Config organizer. Provides default config object for velocity."""
+
 from loguru import logger
-from ._exceptions import InvalidSchema, InvalidConfig
+from ._exceptions import InvalidConfigIdentifier
 from platform import processor as arch
 from pathlib import Path
-from os import getlogin as os_getlogin
-
-"""
-Allowed schema configurations:
-
-bool:
-    required: bool=True
-    default: bool
-
-str:
-    required: bool=True
-    default: str
-    allowed: list[str]=None     # None is treated as if there are no restrictions
-
-list:
-    required: bool=True
-    default: list
-    items: {schema}      # the types of items in the list (bool or str)
-
-dict:
-    required: bool=True
-    auto: bool=False            # if not defined auto-generate
-    cardinality: str="one"      # allowed values are 'one' or 'many'
-                                # If many, the dict name is ignored and n matches of the dict are allowed
-    properties: dict
-"""
-
-DEFAULT_BOOL_SCHEMA = {
-    "type": bool,
-}
-
-DEFAULT_STR_SCHEMA = {
-    "type": str,
-}
-
-DEFAULT_LIST_SCHEMA = {
-    "type": list,
-    "default": list(),
-    "items": {
-        "type": str,
-        "required": False
-    }
-}
-
-IM_SCHEMA = {
-    "type": str,
-    "default": "COMBINE",
-    "allowed": ["COMBINE", "OVERRIDE"]
-}
-
-VELOCITY_SCHEMA = {
-    "type": dict,
-    "properties": {
-        "velocity": {
-            "type": dict,
-            "properties": {
-                "backend": DEFAULT_STR_SCHEMA,
-                "distro:": DEFAULT_STR_SCHEMA,
-                "system": DEFAULT_STR_SCHEMA,
-                "verbose": {
-                    "type": bool,
-                    "default": False
-                },
-                "debug": {
-                    "type": str,
-                    "default": "INFO",
-                    "allowed": ["INFO", "DEBUG"]
-                }
-            }
-        },
-        "build_specs": {
-            "type": dict,
-            "default": {
-                "type": dict,
-                "auto": True,
-                "properties": {
-                    "variables": DEFAULT_LIST_SCHEMA
-                }
-            },
-            "system": {
-                "type": dict,
-                "required": False,
-                "cardinality": "many",
-                "properties": {
-                    "default": {
-                        "type": dict,
-                        "auto": True,
-                        "properties": {
-                            "prolog_lines": DEFAULT_LIST_SCHEMA,
-                            "IM_prolog_lines": IM_SCHEMA,
-                            "variables": DEFAULT_LIST_SCHEMA,
-                            "IM_variables": IM_SCHEMA
-                        }
-                    },
-                    "backend": {
-                        "type": dict,
-                        "required": False,
-                        "cardinality": "many",
-                        "properties": {
-                            "default": {
-                                "type": dict,
-                                "auto": True,
-                                "properties": {
-                                    "arguments": DEFAULT_LIST_SCHEMA,
-                                    "IM_arguments": IM_SCHEMA,
-                                    "prolog_lines": DEFAULT_LIST_SCHEMA,
-                                    "IM_prolog_lines": IM_SCHEMA,
-                                    "variables": DEFAULT_LIST_SCHEMA,
-                                    "IM_variables": IM_SCHEMA
-                                }
-                            },
-                            "image": {
-                                "type": dict,
-                                "required": False,
-                                "cardinality": "many",
-                                "properties": {
-                                    "arguments": DEFAULT_LIST_SCHEMA,
-                                    "IM_arguments": IM_SCHEMA,
-                                    "dependencies": DEFAULT_LIST_SCHEMA,
-                                    "IM_dependencies": IM_SCHEMA,
-                                    "prolog_script": {
-                                        "type": str,
-                                        "default": None
-                                    },
-                                    "variables": DEFAULT_LIST_SCHEMA,
-                                    "IM_variables": IM_SCHEMA
-                                }
-                            }
-                        }
-                    }
-                }
-            }
-        }
-    }
-}
-
-
-def validate_and_generate_config(config: dict | list | str | bool | None, schema: dict) -> bool:
-    try:
-        if schema["type"] == dict:
-            allowed = {"type", "required", "auto", "cardinality", "properties"}
-            if not allowed.issuperset(schema.keys()):
-                raise InvalidSchema("schema {} contains invalid attributes: {}".format(
-                    schema,
-                    set(schema).difference(allowed)
-                ))
-            if not isinstance(schema["type"], type) or \
-                    not isinstance(schema["required"], bool) or \
-                    not isinstance(schema["auto"], bool) or \
-                    schema["cardinality"] not in ("one", "many") or \
-                    not (isinstance(schema["properties"], dict) and schema["properties"] is not None):
-                raise InvalidSchema("schema {} contains invalid attribute types".format(
-                    schema
-                ))
-            if not isinstance(config, dict) and config is not None:
-                raise InvalidConfig("config type '{}' does not match schema type '{}'".format(
-                    type(config),
-                    schema["type"]
-                ))
-
-            if schema["required"]:
-                if config is None:
-                    raise InvalidConfig("schema required but config is '{}'".format(
-                        None
-                    ))
-                else:
-                    for p in config.keys():
-                        for s in schema["properties"]:
-                            validate_and_generate_config(config[p], s)
-            else:
-                if config is None:
-                    return True
-
-
-            # return True
-        elif schema["type"] == list:
-            pass
-        elif schema["type"] == str:
-            pass
-        elif schema["type"] == bool:
-            pass
-        else:
-            raise InvalidSchema("schema type '{}' is not valid".format(schema["type"]))
-
-    except (KeyError, TypeError):
-        logger.warning("schema {} is not a dict or does not specify type".format(schema))
-    except (InvalidSchema, InvalidConfig) as e:
-        logger.warning(e)
-        return False
+from os import getlogin as get_username
 
 
 class Config:
-    """Configuration class."""
+    """Configuration class. Stores configuration as a dictionary."""
+
     def __init__(self) -> None:
         self._config = dict()
 
     def set(self, item: str, value: int | bool | str | list | dict | None) -> None:
-        """Set config property."""
+        """Set configuration property."""
         try:
+            # do not let user set the root node
             if item != "":
                 parts: list[str] = item.split(":")
                 set_value = self._config
                 for p in parts:
+                    # make all config identifiers comply with python identifiers
                     if not p.isidentifier():
-                        logger.warning("'{}' is not a valid identifier", format(item))
+                        raise InvalidConfigIdentifier(
+                            "'{}' is not a valid identifier.".format(item)
+                        )
+                    # walk config tree until the final node is found
                     if p != parts[-1]:
                         if p not in set_value:
                             set_value[p] = dict()
@@ -214,44 +34,49 @@ def set(self, item: str, value: int | bool | str | list | dict | None) -> None:
                     else:
                         set_value[p] = value
             else:
-                raise AttributeError("you cannot set the base config node")
-        except AttributeError as e:
-            logger.warning(e)
+                raise AttributeError("You cannot set the root config node.")
+        except (AttributeError, InvalidConfigIdentifier) as e:
+            logger.exception(e)
 
     def get(self, item: str) -> int | bool | str | list | dict | None:
-        """Get config property."""
+        """Get configuration property. Return None if not found"""
         try:
             if item != "":
                 parts: list[str] = item.split(":")
                 ret_value = self._config
+                # make all config identifiers comply with python identifiers
                 for p in parts:
                     if not p.isidentifier():
-                        logger.warning("'{}' is not a valid identifier", format(item))
-                        return None
+                        raise InvalidConfigIdentifier(
+                            "'{}' is not a valid identifier.".format(item)
+                        )
                     ret_value = ret_value[p]
                 return ret_value
             else:
                 return self._config
         except (KeyError, TypeError):
-            logger.warning("could not find '{}' in config", format(item))
+            logger.warning("Could not find '{}' in config.", format(item))
+        except InvalidConfigIdentifier as e:
+            logger.exception(e)
         return None
 
     def __str__(self) -> str:
         return str(self._config)
 
 
-# default configuration
+# default configuration & singleton
 _config = Config()
-_config.set("velocity", {
-    "system": arch(),
-    "backend": "apptainer",
-    "distro": "ubuntu",
-    "verbose": False,
-    "debug": "WARNING",
-    "config_dir": Path.home().joinpath(".velocity"),
-    "build_dir": Path("/tmp").joinpath(os_getlogin(), "velocity")
-})
-
-
-# config singleton
+_config.set(
+    "velocity",
+    {
+        "system": arch(),
+        "backend": "apptainer",
+        "distro": "ubuntu",
+        "verbose": False,
+        "debug": "WARNING",
+        "config_dir": Path.home().joinpath(".velocity", "config"),
+        "image_dir": Path.home().joinpath(".velocity", "images"),
+        "build_dir": Path("/tmp").joinpath(get_username(), "velocity"),
+    },
+)
 config = _config
diff --git a/src/velocity/_graph_old.py b/src/velocity/_graph_old.py
deleted file mode 100644
index f3eadeb..0000000
--- a/src/velocity/_graph_old.py
+++ /dev/null
@@ -1,519 +0,0 @@
-import re
-import yaml
-import networkx as nx
-from enum import Enum
-from pathlib import Path
-from ._exceptions import EdgeViolatesDAG, InvalidDependencySpecification, NoAvailableBuild
-
-
-def get_permutations(idx: int, sets: list[list]):
-    """
-    Get all the possible permutations from a list of lists
-    :param idx: recursion level
-    :param sets: sets for permutation
-    :return: permutations
-    """
-    permutations = list()
-    if len(sets) == 0:
-        pass
-    elif idx == len(sets) - 1:
-        for i in sets[idx]:
-            permutations.append({i})
-    else:
-        for i in sets[idx]:
-            sub_permutations = get_permutations(idx + 1, sets)
-            for sub in sub_permutations:
-                permutations.append(sub.union({i}))
-    return permutations
-
-
-class Tag:
-
-    def __init__(self, tag_s: str):
-        self.tag = tag_s
-        self.tag_parts = re.split(r'\.|-', tag_s)
-
-    def __eq__(self, other) -> bool:
-        if isinstance(other, Tag) and self.tag_parts == other.tag_parts:
-            return True
-        else:
-            return False
-
-    def __ne__(self, other) -> bool:
-        if not isinstance(other, Tag) or self.tag_parts != other.tag_parts:
-            return True
-        else:
-            return False
-
-    def __gt__(self, other) -> bool:
-        if not isinstance(other, Tag):
-            raise TypeError(f"'>' not supported between instances of "
-                            f"'{type(self).__name__}' and '{type(other).__name__}'")
-        else:
-            comparable_parts = min(len(self.tag_parts), len(other.tag_parts))
-            for idx in range(comparable_parts):
-                if self.tag_parts[idx].isdecimal() and other.tag_parts[idx].isdecimal():
-                    if int(self.tag_parts[idx]) > int(other.tag_parts[idx]):
-                        return True
-                    elif int(self.tag_parts[idx]) == int(other.tag_parts[idx]):
-                        continue
-                    else:
-                        return False
-                else:
-                    if self.tag_parts[idx] > other.tag_parts[idx]:
-                        return True
-                    elif self.tag_parts[idx] == other.tag_parts[idx]:
-                        continue
-                    else:
-                        return False
-
-            # if we got here it means that their comparable parts are equal, so we compare on length.
-            if len(self.tag_parts) > len(other.tag_parts):
-                return True
-            else:
-                return False
-
-    def __ge__(self, other) -> bool:
-        if not isinstance(other, Tag):
-            raise TypeError(f"'>=' not supported between instances of "
-                            f"'{type(self).__name__}' and '{type(other).__name__}'")
-        else:
-            comparable_parts = min(len(self.tag_parts), len(other.tag_parts))
-            for idx in range(comparable_parts):
-                if self.tag_parts[idx].isdecimal() and other.tag_parts[idx].isdecimal():
-                    if int(self.tag_parts[idx]) > int(other.tag_parts[idx]):
-                        return True
-                    elif int(self.tag_parts[idx]) == int(other.tag_parts[idx]):
-                        continue
-                    else:
-                        return False
-                else:
-                    if self.tag_parts[idx] > other.tag_parts[idx]:
-                        return True
-                    elif self.tag_parts[idx] == other.tag_parts[idx]:
-                        continue
-                    else:
-                        return False
-
-            # if we got here it means that their comparable parts are equal, so we compare on length.
-            if len(self.tag_parts) >= len(other.tag_parts):
-                return True
-            else:
-                return False
-
-    def __lt__(self, other) -> bool:
-        if not isinstance(other, Tag):
-            raise TypeError(f"'<' not supported between instances of "
-                            f"'{type(self).__name__}' and '{type(other).__name__}'")
-        else:
-            comparable_parts = min(len(self.tag_parts), len(other.tag_parts))
-            for idx in range(comparable_parts):
-                if self.tag_parts[idx].isdecimal() and other.tag_parts[idx].isdecimal():
-                    if int(self.tag_parts[idx]) < int(other.tag_parts[idx]):
-                        return True
-                    elif int(self.tag_parts[idx]) == int(other.tag_parts[idx]):
-                        continue
-                    else:
-                        return False
-                else:
-                    if self.tag_parts[idx] < other.tag_parts[idx]:
-                        return True
-                    elif self.tag_parts[idx] == other.tag_parts[idx]:
-                        continue
-                    else:
-                        return False
-
-            # if we got here it means that their comparable parts are equal, so we compare on length.
-            if len(self.tag_parts) < len(other.tag_parts):
-                return True
-            else:
-                return False
-
-    def __le__(self, other) -> bool:
-        if not isinstance(other, Tag):
-            raise TypeError(f"'<=' not supported between instances of "
-                            f"'{type(self).__name__}' and '{type(other).__name__}'")
-        else:
-            comparable_parts = min(len(self.tag_parts), len(other.tag_parts))
-            for idx in range(comparable_parts):
-                if self.tag_parts[idx].isdecimal() and other.tag_parts[idx].isdecimal():
-                    if int(self.tag_parts[idx]) < int(other.tag_parts[idx]):
-                        return True
-                    elif int(self.tag_parts[idx]) == int(other.tag_parts[idx]):
-                        continue
-                    else:
-                        return False
-                else:
-                    if self.tag_parts[idx] < other.tag_parts[idx]:
-                        return True
-                    elif self.tag_parts[idx] == other.tag_parts[idx]:
-                        continue
-                    else:
-                        return False
-
-            # if we got here it means that their comparable parts are equal, so we compare on length.
-            if len(self.tag_parts) <= len(other.tag_parts):
-                return True
-            else:
-                return False
-
-    def __id__(self):
-        """
-        Alt form of __str__
-        """
-        return self.tag_parts.__str__()
-
-    def __str__(self):
-        return self.tag
-
-
-class Node:
-    """
-    Node class for an image dependency graph. Uniquely identified by image name,
-    host system, base image distro and image tag.
-    """
-
-    def __init__(self, name: str, tag: str, path: Path = None, build_specifications: dict = None,
-                 specifications_yaml: dict = None) -> None:
-        self.name = name
-        self.tag = Tag(tag)
-        self.path = path
-        self.build_specifications = build_specifications
-        self.specifications_yaml = specifications_yaml
-
-    def similar(self, other) -> bool:
-        """
-        Check if two nodes share the same name.
-        """
-        if isinstance(other, Node) and self.name == other.name:
-            return True
-        else:
-            return False
-
-    def __eq__(self, other) -> bool:
-        if isinstance(other, Node) and self.name == other.name and self.tag == other.tag:
-            return True
-        else:
-            return False
-
-    def __ne__(self, other) -> bool:
-        if not isinstance(other, Node) or self.name != other.name or self.tag != other.tag:
-            return True
-        else:
-            return False
-
-    def __gt__(self, other) -> bool:
-        if not isinstance(other, Node):
-            raise TypeError(f"'>' not supported between instances of "
-                            f"'{type(self).__name__}' and '{type(other).__name__}'")
-        elif self.name > other.name:
-            return True
-        elif self.name == other.name and self.tag > other.tag:
-            return True
-        else:
-            return False
-
-    def __ge__(self, other) -> bool:
-        if not isinstance(other, Node):
-            raise TypeError(f"'>=' not supported between instances of "
-                            f"'{type(self).__name__}' and '{type(other).__name__}'")
-        elif self.name > other.name:
-            return True
-        elif self.name == other.name and self.tag >= other.tag:
-            return True
-        else:
-            return False
-
-    def __lt__(self, other) -> bool:
-        if not isinstance(other, Node):
-            raise TypeError(f"'<' not supported between instances of "
-                            f"'{type(self).__name__}' and '{type(other).__name__}'")
-        elif self.name < other.name:
-            return True
-        elif self.name == other.name and self.tag < other.tag:
-            return True
-        else:
-            return False
-
-    def __le__(self, other) -> bool:
-        if not isinstance(other, Node):
-            raise TypeError(f"'<=' not supported between instances of "
-                            f"'{type(self).__name__}' and '{type(other).__name__}'")
-        elif self.name < other.name:
-            return True
-        elif self.name == other.name and self.tag <= other.tag:
-            return True
-        else:
-            return False
-
-    def __hash__(self) -> int:
-        return hash(self.name + self.tag.__id__())
-
-    def __str__(self) -> str:
-        return f'Node({self.name}, {self.tag})'
-
-
-class DepOp(Enum):
-    """
-    Specify dependency options
-    """
-    EQ = '='
-    GE = '^'
-    LE = '_'
-    UN = None
-
-
-class Target:
-    """
-    Build specification targets
-    """
-
-    def __init__(self, node: Node, op: DepOp):
-        self.node = node
-        self.op = op
-
-    def __str__(self):
-        return f'Target: {self.op} -> {str(self.node)}'
-
-
-class ImageGraph(nx.DiGraph):
-
-    def __init__(self, path: str, backend: str, system: str, distro: str, **attr) -> None:
-        super().__init__(**attr)
-        self.backend = backend
-        self.system = system
-        self.distro = distro
-
-        p = Path(path)
-        if not p.is_dir():
-            raise NotADirectoryError(f"Image path {path} is not a directory!")
-
-        # add nodes to graph (dependencies are added later once all nodes are in the graph)
-        for name in [x for x in p.iterdir() if x.is_dir() and x.name[0] != '.']:
-            for tag in [x for x in name.iterdir() if x.is_dir()]:
-                with open(Path.joinpath(tag, 'specifications.yaml'), 'r') as file:
-                    specifications = yaml.safe_load(file)
-                    if specifications is None:
-                        raise TypeError("Specification can not be None")
-                    if self.system in specifications['build_specifications']:
-                        if self.backend in specifications['build_specifications'][self.system]:
-                            if self.distro in specifications['build_specifications'][self.system][self.backend]:
-                                self.add_node(Node(name.name, tag.name, tag.absolute(),
-                                                   specifications['build_specifications']
-                                                   [self.system][self.backend][self.distro], specifications))
-
-        # add dependency edges to graph
-        for node in self.nodes:
-            if 'dependencies' in node.build_specifications:
-                for dependency in node.build_specifications['dependencies']:
-                    if dependency is None:
-                        raise InvalidDependencySpecification(dependency, node.name, node.tag,
-                                                             Path.joinpath(node.path, 'specifications.yaml'))
-                    else:
-                        # split up specification into parts
-                        result = re.search(r'^(.*)@(.*)([%^_=])(.*)$', dependency)
-
-                        # add the specified edge(s) to the graph
-                        dependency_fulfilled = False
-                        if result is not None:
-                            if result[3] == '=':
-                                self.add_edge(node, Node(result[1], result[4]))
-                                dependency_fulfilled = True
-                            elif result[3] == '^':
-                                for n in self.nodes:
-                                    if n.similar(Node(result[1], '')) and n >= Node(result[1], result[4]):
-                                        self.add_edge(node, n)
-                                        dependency_fulfilled = True
-                            elif result[3] == '_':
-                                for n in self.nodes:
-                                    if n.similar(Node(result[1], '')) and n <= Node(result[1], result[4]):
-                                        self.add_edge(node, n)
-                                        dependency_fulfilled = True
-                            elif result[3] == '%':
-                                for n in self.nodes:
-                                    if Node(result[1], result[2]) <= n <= Node(result[1], result[4]):
-                                        self.add_edge(node, n)
-                                        dependency_fulfilled = True
-                        else:
-                            for n in self.nodes:
-                                if n.similar(Node(dependency, '')):
-                                    self.add_edge(node, n)
-                                    dependency_fulfilled = True
-                        # check that the dependency was fulfilled
-                        if not dependency_fulfilled:
-                            raise InvalidDependencySpecification(dependency, node.name, node.tag,
-                                                                 Path.joinpath(node.path, 'specifications.yaml'))
-
-    def add_edge(self, u_of_edge: Node, v_of_edge: Node, **attr):
-        # check that edge endpoint are in graph
-        if self.has_node(u_of_edge) and self.has_node(v_of_edge):
-            super().add_edge(u_of_edge, v_of_edge, **attr)
-        else:
-            raise InvalidDependencySpecification(f'{v_of_edge.name}@={v_of_edge.tag}',
-                                                 u_of_edge.name, u_of_edge.tag,
-                                                 Path.joinpath(u_of_edge.path, 'specifications.yaml'))
-
-        # check that graph is still a DAG
-        if not nx.is_directed_acyclic_graph(self):
-            cycle = nx.find_cycle(self)
-            raise EdgeViolatesDAG(u_of_edge, v_of_edge, cycle)
-
-    def get_similar_nodes(self, node: Node) -> set:
-        similar = set()
-        for n in self.nodes:
-            if n.similar(node):
-                similar.add(n)
-        return similar
-
-    def get_dependencies(self, node: Node):
-        # had to add this wrapper because nx.neighbors was dropping the attributes of some nodes (cuda, python)
-        deps = set()
-        for node in nx.neighbors(self, node):
-            for n in self.nodes:
-                if n == node:
-                    deps.add(n)
-        # will contact the maintainers of networkx at some point
-
-        return deps
-
-    def is_above(self, u_node: Node, v_node: Node) -> bool:
-        """
-        Test if one node is above another in the dependency tree
-        """
-        return nx.has_path(self, u_node, v_node)
-
-    def _is_valid_build_tuple(self, bt: tuple[Node]) -> bool:
-        """
-        Verify that all the dependencies of a build tuple can be met.
-        """
-        valid = True
-
-        # check for similar images
-        for i0 in range(len(bt)):
-            for i2 in bt[i0 + 1:]:
-                if bt[i0].similar(i2):
-                    valid = False
-
-        # check that all images exist
-        for node in bt:
-            if not self.has_node(node):
-                valid = False
-
-        # break prematurely if the first two checks fail
-        if not valid:
-            return valid
-
-        # check that deps in build tuple
-        for node in bt:
-            deps = self.get_dependencies(node)
-
-            # group deps
-            grouped = dict()
-            for d in deps:
-                if d.name not in grouped:
-                    grouped[d.name] = set()
-                grouped[d.name].add(d)
-
-            # check that the needed dependency exists
-            for g in grouped:
-                if grouped[g].isdisjoint(bt):
-                    valid = False
-
-        return valid
-
-    def create_build_recipe(self, targets: list[Target]) -> tuple:
-
-        # check if all the targets exist
-        for node in targets:
-            if len(self.get_similar_nodes(node.node)) < 1:
-                raise NoAvailableBuild(f"The build target {node.node} does not exist!")
-
-        # init build set and priority list
-        build_set = set()
-        priority_list = list()
-
-        # add similar to build set
-        for target in targets:
-            build_set.update(self.get_similar_nodes(target.node))
-            # make sure to update priority
-            if target.node.name not in priority_list:
-                priority_list.append(target.node.name)
-
-        # add deps to build set
-        while True:
-            build_set_length = len(build_set)
-
-            for node in build_set.copy():
-                dependencies = self.get_dependencies(node)
-                for d in dependencies:
-                    build_set.add(d)
-                    if d.name not in priority_list:
-                        priority_list.append(d.name)
-
-            # loop until all dependencies are added
-            if build_set_length == len(build_set):
-                break
-
-        # apply constraints
-        for target in targets:
-            for node in build_set.copy():
-                if node.similar(target.node):
-                    if target.op == DepOp.EQ and node != target.node:
-                        build_set.remove(node)
-                    elif target.op == DepOp.GE and node < target.node:
-                        build_set.remove(node)
-                    elif target.op == DepOp.LE and node > target.node:
-                        build_set.remove(node)
-
-        # group deps
-        grouped = dict()
-        for node in build_set:
-            if node.name not in grouped:
-                grouped[node.name] = set()
-            grouped[node.name].add(node)
-        # sort deps so that the highest versions of images further up the dep tree will be chosen
-        prioritized_list_group = list()
-        for group in priority_list:
-            tmp = list(grouped[group])
-            tmp.sort(reverse=True)
-            prioritized_list_group.append(tmp)
-        # get permutations
-        permutations = get_permutations(0, prioritized_list_group)
-
-        # return valid build tuple
-        for p in permutations:
-
-            # clean up permutation
-            clean_p = set()
-            for n in p:
-                for t in targets:
-                    con_targ = None
-                    for nt in [x for x in p]:
-                        if nt.similar(t.node):
-                            con_targ = nt
-                            break
-                    if self.is_above(con_targ, n):
-                        clean_p.add(n)
-                        break
-
-            if self._is_valid_build_tuple(tuple(clean_p)):
-                # order build
-                build_list = list()
-                processed = set()
-                unprocessed = clean_p.copy()
-                while len(unprocessed) > 0:
-                    level_holder = list()
-                    for node in unprocessed.copy():
-                        deps = set(self.get_dependencies(node)).intersection(clean_p)
-                        if deps.issubset(processed):
-                            level_holder.append(node)
-                    level_holder.sort()
-                    for node in level_holder:
-                        processed.add(node)
-                        unprocessed.remove(node)
-                        build_list.append(node)
-
-                return tuple(build_list)
-
-        # if we got here no valid build tuple could be found
-        raise NoAvailableBuild("No Available build!")
diff --git a/src/velocity/_print.py b/src/velocity/_print.py
index 9359078..086b70d 100644
--- a/src/velocity/_print.py
+++ b/src/velocity/_print.py
@@ -1,40 +1,50 @@
+"""Printing formatter."""
+
 from colorama import Fore, Back, Style
 
 
 class TextBlock:
-
-    def __init__(self, text: str, fore: Fore = Fore.RESET, back: Back = Back.RESET,
-                 style: Style = Style.NORMAL) -> None:
+    """Defines a block of text and its styling."""
+
+    def __init__(
+        self,
+        text: str,
+        fore: Fore = Fore.RESET,
+        back: Back = Back.RESET,
+        style: Style = Style.NORMAL,
+    ) -> None:
         self.text = text
         self.fore = fore
         self.back = back
         self.style = style
 
 
-def p1print(tb: list[TextBlock]) -> None:
-    text_blocks = [
-        TextBlock('==> ', fore=Fore.GREEN, style=Style.BRIGHT)
-    ]
-    text_blocks.extend(tb)
-    print_text_blocks(text_blocks)
+def bare_print(tb: list[TextBlock]) -> None:
+    """Print a list of TextBlocks."""
+    for text_block in tb:
+        print(
+            "{}{}{}{}{}".format(
+                text_block.fore,
+                text_block.back,
+                text_block.style,
+                text_block.text,
+                Style.RESET_ALL,
+            ),
+            end="",
+        )
+    # print a newline at the end
+    print()
 
 
-def sp1print(tb: list[TextBlock]) -> None:
-    text_blocks = [
-        TextBlock('\t', fore=Fore.GREEN, style=Style.BRIGHT)
-    ]
+def header_print(tb: list[TextBlock]) -> None:
+    """Print a list of TextBlocks with a preceding '==> ' block."""
+    text_blocks = [TextBlock("==> ", fore=Fore.GREEN, style=Style.BRIGHT)]
     text_blocks.extend(tb)
-    print_text_blocks(text_blocks)
+    bare_print(text_blocks)
 
 
-def wprint(tb: list[TextBlock]) -> None:
-    for b in tb:
-        b.fore = Fore.RED
-        b.style = Style.BRIGHT
-    print_text_blocks(tb)
-
-
-def print_text_blocks(text_blocks: list[TextBlock]):
-    for text_block in text_blocks:
-        print(f'{text_block.fore}{text_block.back}{text_block.style}{text_block.text}{Style.RESET_ALL}', end='')
-    print()
+def indent_print(tb: list[TextBlock]) -> None:
+    """Print a list of TextBlocks with a preceding 4 spaces."""
+    text_blocks = [TextBlock("    ", fore=Fore.GREEN, style=Style.BRIGHT)]
+    text_blocks.extend(tb)
+    bare_print(text_blocks)
diff --git a/tests/test__config.py b/tests/test__config.py
index 9ce92ee..d7ed05c 100644
--- a/tests/test__config.py
+++ b/tests/test__config.py
@@ -1,59 +1,39 @@
 from unittest import TestCase
-from src.velocity._config import validate_and_generate_config
-
-TEST_SCHEMA = {
-    "type": dict,
-    "properties": {
-        "test_dict": {
-            "type": dict,
-            "properties": {
-                "test_list": {},
-                "test_str": {},
-                "test_bool": {}
-            }
-        },
-        "missing_dict": {}
+from src.velocity._config import Config
+
+c = Config()
+c._config = {
+    "test_one": 7,
+    "test_two": False,
+    "test_three": [5, "a"],
+    "test_four": {
+        "inner_test": "test"
     }
 }
 
-
-class Test(TestCase):
-    """
-    def test_validate_config(self):
-        # misc
-        self.assertFalse(validate_and_generate_config({}, {}))
-        self.assertFalse(validate_and_generate_config(1, {}))
-
-        # dict
-        ts = {
-            "type": dict,
-            "required": True,
-            "auto": False,
-            "cardinality": "one",
-            "properties": {}
-        }
-        self.assertTrue(validate_and_generate_config({}, ts))
-        self.assertFalse(validate_and_generate_config(None, ts))
-        self.assertFalse(validate_and_generate_config({"test": 0}, ts))
-
-        ts = {
-            "type": dict,
-            "required": True,
-            "auto": False,
-            "cardinality": "one",
-            "properties": {
-                "test": {
-                    "type": bool
+class TestConfig(TestCase):
+    def test_set(self):
+        c.set("test_four:inner_test", True)
+        c.set("one:two:three", "test")
+        c.set("again", 56)
+        t = {
+            "again": 56,
+            "test_one": 7,
+            "test_two": False,
+            "test_three": [5, "a"],
+            "test_four": {
+                "inner_test": True
+            },
+            "one": {
+                "two": {
+                    "three": "test"
                 }
             }
         }
-        self.assertFalse(validate_and_generate_config({"test": True}, ts))
-
-        # list
-
-        # str
-
-        # bool
+        self.assertEqual(t, c._config)
 
-        self.fail()
-        """
+    def test_get(self):
+        self.assertEqual(7, c.get("test_one"))
+        self.assertFalse(c.get("test_two"))
+        self.assertEqual("a", c.get("test_three")[1])
+        self.assertEqual("test", c.get("test_four:inner_test"))

From f4d9a399b80f36912da0f5ba692aeedf534a071c Mon Sep 17 00:00:00 2001
From: Asa Rentschler <rentschleraj@ornl.gov>
Date: Fri, 6 Sep 2024 17:07:55 -0400
Subject: [PATCH 03/10] Refactored build

---
 pyproject.toml            |   6 +-
 src/velocity/__init__.py  |   4 -
 src/velocity/_backends.py |  24 +++-
 src/velocity/_build.py    | 290 ++++++++++++++++++--------------------
 src/velocity/_config.py   |   6 +-
 5 files changed, 162 insertions(+), 168 deletions(-)

diff --git a/pyproject.toml b/pyproject.toml
index e077167..4727370 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "velocity"
-dynamic = [ "version" ]
+version = "0.1.0-rc1"
 authors = [
     { name="Asa"}
 ]
@@ -15,9 +15,7 @@ dependencies = [
     "networkx",
     "colorama",
     "editor",
-    "loguru",
-    "sys",
-    "shutil"
+    "loguru"
 ]
 
 [project.urls]
diff --git a/src/velocity/__init__.py b/src/velocity/__init__.py
index 2da6386..990b15e 100644
--- a/src/velocity/__init__.py
+++ b/src/velocity/__init__.py
@@ -1,9 +1,5 @@
 from ._config import config
 
-__version__ = "0.0.0"
-
-config.set("velocity:version", __version__)
-
 __all__ = [
     config
 ]
diff --git a/src/velocity/_backends.py b/src/velocity/_backends.py
index 61c2c5c..8a71932 100644
--- a/src/velocity/_backends.py
+++ b/src/velocity/_backends.py
@@ -217,13 +217,16 @@ def generate_build_cmd(self, src: str, dest: str, args: list[str] = None) -> str
         """Generate CLI command to build."""
 
     @abstractmethod
-    def format_image_name(self, path: Path, image: Image) -> str:
+    def format_image_name(self, path: Path, tag: str) -> str:
         """Create a name for the image build."""
 
     @abstractmethod
-    def clean_up_old_image_cmd(self, path: Path, name: str) -> str:
+    def clean_up_old_image_tag(self, name: str) -> str:
         """Generate CLI command to clean up an old image."""
 
+    def build_exists(self, name: str) -> bool:
+        """Check if an images has been built."""
+
 
 class Podman(Backend):
     """Podman backend."""
@@ -344,9 +347,12 @@ def generate_build_cmd(self, src: str, dest: str, args: list = None) -> str:
     def format_image_name(self, path: Path, tag: str) -> str:
         return "{}{}{}".format("localhost/" if "/" not in tag else "", tag, ":latest" if ":" not in tag else "")
 
-    def clean_up_old_image_cmd(self, path: Path, name: str) -> str:
+    def clean_up_old_image_tag(self, name: str) -> str:
         return "podman untag {}".format(name)
 
+    def build_exists(self, name: str) -> bool:
+        return False
+
 
 class Apptainer(Backend):
     """Apptainer backend."""
@@ -421,19 +427,23 @@ def generate_build_cmd(self, src: str, dest: str, args: list = None) -> str:
         # arguments
         if args is not None and len(args) > 0:
             cmd.append(" ".join(_ for _ in args) if args is not None else "")
-        # script
-        cmd.append("{}".format(src))
         # destination
         cmd.append("{}".format(dest))
+        # script
+        cmd.append("{}".format(src))
         return " ".join(_ for _ in cmd) + ";"
 
     def format_image_name(self, path: Path, tag: str) -> str:
         return "{}{}".format(Path.joinpath(path, tag), ".sif" if ".sif" not in tag else "")
 
-    def clean_up_old_image_cmd(self, path: Path, name: str) -> str:
-        # TODO we need to think about apptainer image caching
+    def clean_up_old_image_tag(self, name: str) -> str:
         return "echo"
 
+    def build_exists(self, name: str) -> bool:
+        if Path(name).is_file():
+            return True
+        return False
+
 
 def get_backend() -> Backend:
     backend = config.get("velocity:backend")
diff --git a/src/velocity/_build.py b/src/velocity/_build.py
index f84381d..458d114 100644
--- a/src/velocity/_build.py
+++ b/src/velocity/_build.py
@@ -1,70 +1,55 @@
+"""Build velocity images."""
+
 import datetime
-import random
-import re
 import shutil
 import os
-import string
 from timeit import default_timer as timer
 from subprocess import Popen, PIPE
 from queue import SimpleQueue
 from threading import Thread
 from pathlib import Path
 from colorama import Fore, Style
-
 from ._config import config
 from ._graph import Image
-from ._print import p1print, sp1print, TextBlock
-from ._backends import get_backend
+from ._print import header_print, indent_print, TextBlock
+from ._backends import get_backend, Backend
 
 
 def read_pipe(pipe: PIPE, topic: SimpleQueue, prefix: str, log: SimpleQueue) -> None:
-    """
-        Read a subprocess PIPE and place lines on topic queue and log queue
-    """
+    """Read a subprocess PIPE and place lines on topic queue and log queue."""
     while True:
         ln = pipe.readline()
-        if ln == '':
+        if ln == "":
             break
         else:
-            topic.put(ln.strip('\n'))
-            log.put("{} {}".format(prefix, ln.strip('\n')))
+            topic.put(ln.strip("\n"))
+            log.put("{} {}".format(prefix, ln.strip("\n")))
 
 
 def run(cmd: str, log_file: Path = None, verbose: bool = False) -> None:
-    """
-        Run a system command logging all output and print if verbose.
-    """
-
+    """Run a system command logging all output to a file and print if verbose."""
     # open log file (set to False if none is provided)
-    file = open(log_file, 'w') if log_file is not None else False
+    file = open(log_file, "w") if log_file is not None else False
 
     log = SimpleQueue()
     stdout = SimpleQueue()
     stderr = SimpleQueue()
 
-    process = Popen(
-        cmd,
-        shell=True,
-        stdout=PIPE,
-        stderr=PIPE,
-        universal_newlines=True
-    )
+    process = Popen(cmd, shell=True, stdout=PIPE, stderr=PIPE, universal_newlines=True)
 
-    out = Thread(target=read_pipe, args=(process.stdout, stdout, 'STDOUT:', log))
-    err = Thread(target=read_pipe, args=(process.stderr, stderr, 'STDERR:', log))
+    out = Thread(target=read_pipe, args=(process.stdout, stdout, "STDOUT:", log))
+    err = Thread(target=read_pipe, args=(process.stderr, stderr, "STDERR:", log))
 
     out.start()
     err.start()
 
     # loop for real time output
     while process.poll() is None:
-        if not stdout.empty() and verbose:
-            sp1print([
-                TextBlock(stdout.get(), fore=Fore.GREEN, style=Style.DIM)
-            ])
-        if not log.empty() and file:
-            file.write(log.get() + '\n')
-            file.flush()
+        if verbose and not stdout.empty():
+            indent_print([TextBlock(stdout.get(), fore=Fore.GREEN, style=Style.DIM)])
+        if file and not log.empty():
+            file.write(log.get() + "\n")
+            file.flush()  # TODO is this needed?
 
     out.join()
     err.join()
@@ -72,203 +57,206 @@ def run(cmd: str, log_file: Path = None, verbose: bool = False) -> None:
     # clear stdout & log
     if verbose:
         while not stdout.empty():
-            sp1print([
-                TextBlock(stdout.get(), fore=Fore.GREEN, style=Style.DIM)
-            ])
+            indent_print([TextBlock(stdout.get(), fore=Fore.GREEN, style=Style.DIM)])
 
     if file:
         while not log.empty():
-            file.write(log.get() + '\n')
-            file.flush()
+            file.write(log.get() + "\n")
+            file.flush()  # TODO is this needed?
         file.close()
 
     # if an error was encountered exit with the subprocess exit code
     if process.poll() != 0:
         while stderr.qsize():
-            ln = stderr.get()
-            if verbose:
-                sp1print([
-                    TextBlock(ln, fore=Fore.RED, style=Style.DIM)
-                ])
+            indent_print([TextBlock(stderr.get(), fore=Fore.RED, style=Style.DIM)])
         exit(process.poll())
 
-"""
-class BuildUnit:
 
-    def __init__(self, node: Image):
-        self.node = node
-        self.build_id = ''.join(random.choice(string.ascii_lowercase) for _ in range(8))
-"""
+class ImageBuilder:
+    """Image building class."""
 
-class Builder:
+    def __init__(
+        self,
+        bt: tuple[Image],
+        build_name: str = None,
+        dry_run: bool = False,
+        remove_tags: bool = True,
+        clean_build_dir: bool = False,
+        verbose: bool = False,
+    ) -> None:
+        self.build_units: tuple[Image] = bt
+        self.build_name: str = build_name
+        self.dry_run: bool = dry_run
+        self.remove_tags: bool = remove_tags
+        self.clean_build_dir: bool = clean_build_dir
+        self.verbose: bool = verbose
 
-    def __init__(self, bt: tuple[Image], build_name: str = None, dry_run: bool = False,
-                 leave_tags: bool = True, verbose: bool = False):
-        self.build_units = list()
-        self.build_name = build_name
-        self.dry_run = dry_run
-        self.leave_tags = leave_tags
-        self.verbose = verbose
-
-        self.backend_engine = get_backend({})
+        self.backend_engine: Backend = get_backend()
 
         # create build_dir if it does not exist
         self.build_dir = Path(config.get("velocity:build_dir"))
         self.build_dir.mkdir(mode=0o777, parents=True, exist_ok=True)
 
-        self.build_units = bt
-
-    def build(self):
+    def build(self) -> None:
+        """Launch image builds."""
         # store pwd
         pwd = Path(Path().absolute())
 
-
-        """# clear build_dir
-        for entry in self.build_dir.iterdir():
-            if entry.is_dir():
-                shutil.rmtree(entry)
-            else:
-                entry.unlink()
-        """
+        # clean build_dir
+        if self.clean_build_dir:
+            for entry in self.build_dir.iterdir():
+                if entry.is_dir():
+                    shutil.rmtree(entry)
+                else:
+                    entry.unlink()
 
         last = None  # last image that was built
         for u in self.build_units:
-
             if u == self.build_units[-1]:
-                sorted_specs = [(bu.name, bu.version) for bu in self.build_units]
-                sorted_specs.sort()
-                tag = str(self.build_name if self.build_name is not None else
-                          f"{'_'.join(f'{bu[0]}-{bu[1]}' for bu in sorted_specs)}__{config.get('velocity:system')}-{config.get('velocity:distro')}")
+                tag = str(
+                    self.build_name
+                    if self.build_name is not None
+                    else "{}__{}-{}".format(
+                        "_".join(f"{bu.name}-{bu.version}" for bu in reversed(self.build_units)),
+                        config.get("velocity:system"),
+                        config.get("velocity:distro"),
+                    )
+                )
                 name = self.backend_engine.format_image_name(Path(pwd.absolute()), tag)
             else:
-                name = self.backend_engine.format_image_name(Path.joinpath(self.build_dir, u.id), u.id)
-
+                name = self.backend_engine.format_image_name(
+                    Path.joinpath(self.build_dir, "{}-{}-{}".format(u.name, u.version, u.id)),
+                    u.id
+                )
             self._build_image(u, last, name)
-            if not self.dry_run and not self.leave_tags and last is not None:
-                run(self.backend_engine.clean_up_old_image_cmd(last))
+            if not self.dry_run and self.remove_tags and last is not None:
+                run(self.backend_engine.clean_up_old_image_tag(last))
             last = name
 
         # go back to the starting dir
         os.chdir(pwd)
 
     def _build_image(self, unit: Image, src_image: str, name: str):
+        """Build an individual image."""
         # print start of build
-        p1print([
-            TextBlock(f"{unit.id}", fore=Fore.RED, style=Style.BRIGHT),
-            TextBlock(f": BUILD "),
-            TextBlock(f"{unit.name}@{unit.version}", fore=Fore.MAGENTA, style=Style.BRIGHT),
-            TextBlock(f"{' --DRY-RUN' if self.dry_run else ''} ...")
-        ])
+        header_print(
+            [
+                TextBlock(unit.id, fore=Fore.RED, style=Style.BRIGHT),
+                TextBlock(": BUILD "),
+                TextBlock("{}@{}".format(unit.name, unit.version), fore=Fore.MAGENTA, style=Style.BRIGHT),
+                TextBlock("{} ...".format(" --DRY-RUN" if self.dry_run else "")),
+            ]
+        )
 
         start = timer()
 
         # create build dir and go to it
-        build_sub_dir = Path.joinpath(self.build_dir, unit.id)
+        build_sub_dir = Path.joinpath(self.build_dir, "{}-{}-{}".format(unit.name, unit.version, unit.id))
         build_sub_dir.mkdir(mode=0o744, exist_ok=True)
         os.chdir(build_sub_dir)
 
         # copy additional files
-        if len(unit.files) > 0 and Path.joinpath(unit.path, "files").is_dir():
-            p1print([
-                TextBlock(f"{unit.id}", fore=Fore.RED, style=Style.BRIGHT),
-                TextBlock(f": COPYING FILES ...")
-            ])
-
+        if len(unit.files) > 0:
+            header_print([TextBlock(unit.id, fore=Fore.RED, style=Style.BRIGHT), TextBlock(": COPYING FILES ...")])
             for entry in unit.files:
                 # print copy operation
                 if self.verbose:
-                    sp1print([
-                        TextBlock('DIR: ' if Path.joinpath(unit.path, "files", entry).is_dir() else 'FILE: ', fore=Fore.YELLOW, style=Style.BRIGHT),
-                        TextBlock(f"{Path.joinpath(unit.path, 'files', entry).absolute()}", fore=Fore.GREEN),
-                        TextBlock(f" -> ", fore=Fore.YELLOW, style=Style.BRIGHT),
-                        TextBlock(f"{Path.joinpath(build_sub_dir, entry).absolute()}", fore=Fore.GREEN)
-                    ])
+                    indent_print(
+                        [
+                            TextBlock(
+                                "DIR: " if Path.joinpath(unit.path, "files", entry).is_dir() else "FILE: ",
+                                fore=Fore.YELLOW,
+                                style=Style.BRIGHT,
+                            ),
+                            TextBlock(str(Path.joinpath(unit.path, "files", entry).absolute()), fore=Fore.GREEN),
+                            TextBlock(" -> ", fore=Fore.YELLOW, style=Style.BRIGHT),
+                            TextBlock(str(Path.joinpath(build_sub_dir, entry).absolute()), fore=Fore.GREEN),
+                        ]
+                    )
                 if Path.joinpath(unit.path, "files", entry).is_dir():
                     shutil.copytree(Path.joinpath(unit.path, "files", entry), Path.joinpath(build_sub_dir, entry))
                 else:
                     shutil.copy(Path.joinpath(unit.path, "files", entry), Path.joinpath(build_sub_dir, entry))
 
         # parse template and create script...
-        p1print([
-            TextBlock(f"{unit.id}", fore=Fore.RED, style=Style.BRIGHT),
-            TextBlock(f": GENERATING SCRIPT ...")
-        ])
+        header_print([TextBlock(unit.id, fore=Fore.RED, style=Style.BRIGHT), TextBlock(": GENERATING SCRIPT ...")])
         if self.verbose:
-            sp1print([
-                TextBlock('SCRIPT: ', fore=Fore.YELLOW, style=Style.BRIGHT),
-                TextBlock(f"{Path.joinpath(build_sub_dir, 'script')}", fore=Fore.GREEN)
-            ])
+            indent_print(
+                [
+                    TextBlock("SCRIPT: ", fore=Fore.YELLOW, style=Style.BRIGHT),
+                    TextBlock(str(Path.joinpath(build_sub_dir, "script")), fore=Fore.GREEN),
+                ]
+            )
 
         # get and update script variables
         script_variables = unit.variables.copy()
-        script_variables.update({'__name__': unit.name})
-        script_variables.update({'__version__': str(unit.version)})
-        script_variables.update({'__timestamp__': str(datetime.datetime.now())})
-        script_variables.update({'__threads__': str(int(os.cpu_count() * 0.75) if int(os.cpu_count() * 0.75) < 16 else 16)})
+        script_variables.update({"__name__": unit.name})
+        script_variables.update({"__version__": str(unit.version)})
+        script_variables.update({"__timestamp__": str(datetime.datetime.now())})
+        script_variables.update(
+            {"__threads__": str(int(os.cpu_count() * 0.75) if int(os.cpu_count() * 0.75) < 16 else 16)}
+        )
         if src_image is not None:
-            script_variables.update({'__base__': src_image})
+            script_variables.update({"__base__": src_image})
 
-        script = self.backend_engine.generate_script(
-            Path.joinpath(unit.path, 'templates', f'{unit.template}.vtmp'),
-            script_variables
-        )
+        script = self.backend_engine.generate_script(unit, script_variables)
         # write out script
-        with open(Path.joinpath(build_sub_dir, 'script'), 'w') as out_file:
+        with open(Path.joinpath(build_sub_dir, "script"), "w") as out_file:
             for line in script:
                 if self.verbose:
-                    sp1print([
-                        TextBlock(line, fore=Fore.BLUE, style=Style.DIM)
-                    ])
-                out_file.writelines(line + '\n')
+                    indent_print([TextBlock(line, fore=Fore.BLUE, style=Style.DIM)])
+                out_file.writelines(line + "\n")
 
         # run prolog & build
         build_cmd = self.backend_engine.generate_build_cmd(
-            str(Path.joinpath(build_sub_dir, 'script')),
-            name,
-            unit.arguments
+            str(Path.joinpath(build_sub_dir, "script")), name, unit.arguments
         )
-        build_file_path = Path.joinpath(build_sub_dir, 'build')
-        build_contents = ['#!/usr/bin/env bash']
-
+        build_file_path = Path.joinpath(build_sub_dir, "build")
+        build_contents = ["#!/usr/bin/env bash"]
 
         if unit.prolog is not None:
-            p1print([
-                TextBlock(f"{unit.id}", fore=Fore.RED, style=Style.BRIGHT),
-                TextBlock(f": RUNNING PROLOG ... && BUILDING ...")
-            ])
-            build_contents.append(unit.prolog.strip('\n'))
+            header_print(
+                [
+                    TextBlock(unit.id, fore=Fore.RED, style=Style.BRIGHT),
+                    TextBlock(": RUNNING PROLOG ... && BUILDING ..."),
+                ]
+            )
+            build_contents.append(unit.prolog.strip("\n"))
             build_contents.append(build_cmd)
 
         else:
-            p1print([
-                TextBlock(f"{unit.id}", fore=Fore.RED, style=Style.BRIGHT),
-                TextBlock(f": BUILDING ...")
-            ])
+            header_print([TextBlock(unit.id, fore=Fore.RED, style=Style.BRIGHT), TextBlock(": BUILDING ...")])
             build_contents.append(build_cmd)
 
-        with open(build_file_path, 'w') as build_file:
+        with open(build_file_path, "w") as build_file:
             for line in build_contents:
-                build_file.write(line + '\n')
+                build_file.write(line + "\n")
                 if self.verbose:
-                    sp1print([
-                        TextBlock(line, fore=Fore.YELLOW, style=Style.BRIGHT)
-                    ])
+                    indent_print([TextBlock(line, fore=Fore.YELLOW, style=Style.BRIGHT)])
 
         build_file_path.chmod(0o744)
 
         if not self.dry_run:
-            run(str(build_file_path.absolute()), log_file=Path.joinpath(build_sub_dir, 'log'), verbose=self.verbose)
+            if self.backend_engine.build_exists(name):
+                if self.verbose:
+                    indent_print(
+                        [TextBlock("Using cached image {} ...".format(name), fore=Fore.GREEN, style=Style.DIM)]
+                    )
+            else:
+                run(str(build_file_path.absolute()), log_file=Path.joinpath(build_sub_dir, "log"), verbose=self.verbose)
 
         end = timer()
 
-        p1print([
-            TextBlock(f"{unit.id}", fore=Fore.RED, style=Style.BRIGHT),
-            TextBlock(f": IMAGE "),
-            TextBlock(f"{name}", fore=Fore.MAGENTA, style=Style.BRIGHT),
-            TextBlock(' ('),
-            TextBlock(f"{unit.name}@{unit.version}", fore=Fore.MAGENTA, style=Style.BRIGHT),
-            TextBlock(f") BUILT ["),
-            TextBlock(f"{datetime.timedelta(seconds=round(end - start))}", fore=Fore.MAGENTA, style=Style.BRIGHT),
-            TextBlock(']')
-        ])
+        header_print(
+            [
+                TextBlock(unit.id, fore=Fore.RED, style=Style.BRIGHT),
+                TextBlock(": IMAGE "),
+                TextBlock(name, fore=Fore.MAGENTA, style=Style.BRIGHT),
+                TextBlock(" ("),
+                TextBlock("{}@{}".format(unit.name, unit.version), fore=Fore.MAGENTA, style=Style.BRIGHT),
+                TextBlock(") BUILT ["),
+                TextBlock(str(datetime.timedelta(seconds=round(end - start))), fore=Fore.MAGENTA, style=Style.BRIGHT),
+                TextBlock("]"),
+            ]
+        )
         print()  # new line
diff --git a/src/velocity/_config.py b/src/velocity/_config.py
index 09887cf..8ced3c8 100644
--- a/src/velocity/_config.py
+++ b/src/velocity/_config.py
@@ -1,10 +1,11 @@
 """Config organizer. Provides default config object for velocity."""
 
 from loguru import logger
-from ._exceptions import InvalidConfigIdentifier
 from platform import processor as arch
 from pathlib import Path
 from os import getlogin as get_username
+from importlib.metadata import version
+from ._exceptions import InvalidConfigIdentifier
 
 
 class Config:
@@ -75,8 +76,9 @@ def __str__(self) -> str:
         "verbose": False,
         "debug": "WARNING",
         "config_dir": Path.home().joinpath(".velocity", "config"),
-        "image_dir": Path.home().joinpath(".velocity", "images"),
+        "image_path": Path.home().joinpath(".velocity", "images"),
         "build_dir": Path("/tmp").joinpath(get_username(), "velocity"),
+        "version": version("velocity")
     },
 )
 config = _config

From c363371b2a612823189360eb8149a646450fa24f Mon Sep 17 00:00:00 2001
From: Asa Rentschler <rentschleraj@ornl.gov>
Date: Mon, 9 Sep 2024 14:33:45 -0400
Subject: [PATCH 04/10] Cleaned up graph a little

---
 src/velocity/_graph.py | 436 ++++++++++++++++++++---------------------
 tests/test__graph.py   |   3 +-
 2 files changed, 216 insertions(+), 223 deletions(-)

diff --git a/src/velocity/_graph.py b/src/velocity/_graph.py
index 1111c17..bc513dd 100644
--- a/src/velocity/_graph.py
+++ b/src/velocity/_graph.py
@@ -1,29 +1,22 @@
 """Graph library and tools for dependency graph"""
+
 from loguru import logger
 from re import split as re_split, fullmatch as re_fullmatch, Match as ReMatch
-from ._exceptions import (
-    InvalidImageVersionError,
-    InvalidDependencySpecification,
-    EdgeViolatesDAG,
-    NoAvailableBuild
-)
 from pathlib import Path
 from hashlib import sha256
 from typing_extensions import Self
+from yaml import safe_load as yaml_safe_load
+from copy import deepcopy
+from enum import Enum
 from networkx import (
     DiGraph as nx_DiGraph,
     is_directed_acyclic_graph as nx_is_directed_acyclic_graph,
     find_cycle as nx_find_cycle,
     neighbors as nx_neighbors,
-    has_path as nx_has_path
+    has_path as nx_has_path,
 )
-from yaml import safe_load as yaml_safe_load
 from ._config import config
-from copy import deepcopy
-from enum import Enum
-
-VERSION_REGEX = \
-    r"^(?P<major>[0-9]+)(?:\.(?P<minor>[0-9]+)(:?\.(?P<patch>[0-9]+))?)?(?:-(?P<suffix>[a-zA-Z0-9]+))?$"
+from ._exceptions import InvalidImageVersionError, CannotFindDependency, EdgeViolatesDAG, NoAvailableBuild
 
 
 def get_permutations(idx: int, sets: list[list]):
@@ -48,15 +41,19 @@ def get_permutations(idx: int, sets: list[list]):
 
 
 class Version:
-    """Version class for images."""
+    """Version class."""
+
     def __init__(self, version_specifier: str) -> None:
         self.vs = version_specifier
         try:
-            version_dict: dict = re_fullmatch(VERSION_REGEX, version_specifier).groupdict()
-            self.major: int | None = int(version_dict['major']) if version_dict['major'] is not None else None
-            self.minor: int | None = int(version_dict['minor']) if version_dict['minor'] is not None else None
-            self.patch: int | None = int(version_dict['patch']) if version_dict['patch'] is not None else None
-            self.suffix: str | None = str(version_dict['suffix']) if version_dict['suffix'] is not None else None
+            version_dict: dict = re_fullmatch(
+                r"^(?P<major>[0-9]+)(?:\.(?P<minor>[0-9]+)(:?\.(?P<patch>[0-9]+))?)?(?:-(?P<suffix>[a-zA-Z0-9]+))?$",
+                version_specifier,
+            ).groupdict()
+            self.major: int | None = int(version_dict["major"]) if version_dict["major"] is not None else None
+            self.minor: int | None = int(version_dict["minor"]) if version_dict["minor"] is not None else None
+            self.patch: int | None = int(version_dict["patch"]) if version_dict["patch"] is not None else None
+            self.suffix: str | None = str(version_dict["suffix"]) if version_dict["suffix"] is not None else None
             logger.trace("Version: {}".format(self.__str__()))
         except AttributeError:
             self.major: int | None = None
@@ -74,7 +71,7 @@ def vcs(self) -> str:
             self.major if self.major is not None else "#",
             self.minor if self.minor is not None else "#",
             self.patch if self.patch is not None else "#",
-            self.suffix if self.suffix is not None else "~"
+            self.suffix if self.suffix is not None else "~",
         )
 
     def preferred(self, other) -> bool:
@@ -105,52 +102,55 @@ def _cut_vcses_to_size(cls, one: Self, two: Self) -> tuple[str, str]:
 
     def __eq__(self, other) -> bool:
         if not isinstance(other, Version):
-            raise TypeError(f"'>' not supported between instances of "
-                            f"'{type(self).__name__}' and '{type(other).__name__}'")
+            raise TypeError(
+                f"'>' not supported between instances of " f"'{type(self).__name__}' and '{type(other).__name__}'"
+            )
         s_vcs, o_vcs = self._cut_vcses_to_size(self, other)
         return s_vcs == o_vcs
 
     def __ne__(self, other) -> bool:
         if not isinstance(other, Version):
-            raise TypeError(f"'>' not supported between instances of "
-                            f"'{type(self).__name__}' and '{type(other).__name__}'")
+            raise TypeError(
+                f"'>' not supported between instances of " f"'{type(self).__name__}' and '{type(other).__name__}'"
+            )
         s_vcs, o_vcs = self._cut_vcses_to_size(self, other)
         return s_vcs != o_vcs
 
     def __gt__(self, other) -> bool:
         if not isinstance(other, Version):
-            raise TypeError(f"'>' not supported between instances of "
-                            f"'{type(self).__name__}' and '{type(other).__name__}'")
+            raise TypeError(
+                f"'>' not supported between instances of " f"'{type(self).__name__}' and '{type(other).__name__}'"
+            )
         return self.vcs > other.vcs and not self.__eq__(other)
 
     def __ge__(self, other) -> bool:
         if not isinstance(other, Version):
-            raise TypeError(f"'>' not supported between instances of "
-                            f"'{type(self).__name__}' and '{type(other).__name__}'")
+            raise TypeError(
+                f"'>' not supported between instances of " f"'{type(self).__name__}' and '{type(other).__name__}'"
+            )
         return self.vcs > other.vcs or self.__eq__(other)
 
     def __lt__(self, other) -> bool:
         if not isinstance(other, Version):
-            raise TypeError(f"'>' not supported between instances of "
-                            f"'{type(self).__name__}' and '{type(other).__name__}'")
+            raise TypeError(
+                f"'>' not supported between instances of " f"'{type(self).__name__}' and '{type(other).__name__}'"
+            )
         return self.vcs < other.vcs and not self.__eq__(other)
 
     def __le__(self, other) -> bool:
         if not isinstance(other, Version):
-            raise TypeError(f"'>' not supported between instances of "
-                            f"'{type(self).__name__}' and '{type(other).__name__}'")
+            raise TypeError(
+                f"'>' not supported between instances of " f"'{type(self).__name__}' and '{type(other).__name__}'"
+            )
         return self.vcs < other.vcs or self.__eq__(other)
 
     def __str__(self) -> str:
         return self.vs
 
 
-class Spec:
-    def __init__(self):
-        pass
-
-
 class Image:
+    """Velocity container image."""
+
     def __init__(self, name: str, version: str, system: str, backend: str, distro: str, path: str) -> None:
         # foundational
         self.name: str = name
@@ -158,22 +158,24 @@ def __init__(self, name: str, version: str, system: str, backend: str, distro: s
         self.system: str = system
         self.backend: str = backend
         self.distro: str = distro
-        self.dependencies: list[str] = list()
+        self.dependencies: set[str] = set()
 
         # additional
         self.variables: dict[str, str] = dict()
-        self.arguments: list[str] = list()
+        self.arguments: set[str] = set()
         self.template: str = "default"
-        self.files: list[str] = list()
+        self.files: set[str] = set()
         self.prolog: str | None = None
+        self.underlay: int | None = None  # sum of the ids this image will be built on
 
         # metadata
         self.path: Path = Path(path)
 
     def satisfies(self, spec: str) -> bool:
         """Test if this node satisfies the given spec."""
-        name_version_regex: str = \
+        name_version_regex: str = (
             r"^(?P<name>{})(?:(?:@(?P<left>[\d\.]+)(?!@))?(?:@?(?P<colen>:)(?P<right>[\d\.]+)?)?)?$".format(self.name)
+        )
         system_regex: str = r"^system=(?P<system>[a-zA-Z0-9]+)$"
         backend_regex: str = r"^backend=(?P<backend>[a-zA-Z0-9]+)$"
         distro_regex: str = r"^distro=(?P<distro>[a-zA-Z0-9]+)$"
@@ -236,7 +238,7 @@ def satisfies(self, spec: str) -> bool:
                     if res.group("name") == dep:
                         matched = True
                 if matched:
-                    continue    # match is found so continue
+                    continue  # match is found so continue
 
             # if we get here this part has not been handled
             return False
@@ -245,26 +247,24 @@ def satisfies(self, spec: str) -> bool:
         return True
 
     def apply_constraint(self, conditional: str, _type: str, spec: str) -> bool:
+        """Evaluate and apply constraints. Return True if a constraint changes the dependencies."""
         if self.satisfies(conditional):
             if _type == "dependency":
-                self.dependencies.append(spec)
+                if spec not in self.dependencies:
+                    self.dependencies.add(spec)
+                    return True
             elif _type == "variable":
                 parts = spec.split("=")
                 self.variables[parts[0]] = parts[1]
             elif _type == "argument":
-                self.arguments.append(spec)
+                self.arguments.add(spec)
             elif _type == "template":
                 self.template = spec
             elif self.files == "file":
-                self.files.append(spec)
+                self.files.add(spec)
             elif _type == "prolog":
                 self.prolog = spec
-            else:
-                # not a valid type
-                return False
-        else:
-            # spec not added
-            return False
+        return False
 
     @property
     def hash(self) -> str:
@@ -286,12 +286,14 @@ def hash(self) -> str:
             hash_list.append(None)
         hash_list.append(",".join(str(x) for x in self.files))
         hash_list.append(self.prolog)
+        hash_list.append(self.underlay)
 
         hash_str: str = "|".join(str(x) for x in hash_list)
         return sha256(hash_str.encode()).hexdigest()
 
     @property
     def id(self) -> str:
+        """Short hash."""
         return self.hash[:7]
 
     def __hash__(self) -> int:
@@ -315,45 +317,42 @@ def __str__(self) -> str:
             self.system,
             self.backend,
             self.distro,
-            "".join(" ^{}".format(x) for x in self.dependencies) if len(self.dependencies) > 0 else ""
+            "".join(" ^{}".format(x) for x in self.dependencies) if len(self.dependencies) > 0 else "",
         )
 
 
 class DepOp(Enum):
-    """
-    Specify dependency options
-    """
-    EQ = '='
-    GE = '>='
-    LE = '<='
+    """Dependency options."""
+
+    EQ = "="
+    GE = ">="
+    LE = "<="
     UN = None
 
 
 class Target:
-    """
-    Build specification targets
-    """
+    """Build targets."""
 
     def __init__(self, node: Image, op: DepOp):
         self.node = node
         self.op = op
 
     def __str__(self):
-        return f'Target: {self.op} -> {str(self.node)}'
+        return "Target: {} -> {}".format(self.op, self.node)
 
 
 class ImageGraph(nx_DiGraph):
+    """Image dependency graph."""
+
     def __init__(self, **kwargs) -> None:
         super().__init__(**kwargs)
 
-    def add_edge(self, u_of_edge: Image, v_of_edge: Image, **attr) -> None:
-        # check that edge endpoint are in graph
+    def add_edge(self, u_of_edge: Image, v_of_edge: Image, **kwargs) -> None:
+        # check that edge endpoints are in graph
         if self.has_node(u_of_edge) and self.has_node(v_of_edge):
-            super().add_edge(u_of_edge, v_of_edge, **attr)
+            super().add_edge(u_of_edge, v_of_edge, **kwargs)
         else:
-            raise InvalidDependencySpecification(f'{v_of_edge.name}@{v_of_edge.version}',
-                                                 u_of_edge.name, u_of_edge.version,
-                                                 Path.joinpath(u_of_edge.path, 'specs.yaml'))
+            raise CannotFindDependency("Cannot find dependency {} for {}".format(v_of_edge, u_of_edge))
 
         # check that graph is still a DAG
         if not nx_is_directed_acyclic_graph(self):
@@ -361,6 +360,7 @@ def add_edge(self, u_of_edge: Image, v_of_edge: Image, **attr) -> None:
             raise EdgeViolatesDAG(u_of_edge, v_of_edge, cycle)
 
     def get_similar_nodes(self, node: Image) -> set:
+        """Get all nodes with the same name."""
         similar = set()
         for n in self.nodes:
             if n.satisfies(node.name):
@@ -368,31 +368,27 @@ def get_similar_nodes(self, node: Image) -> set:
         return similar
 
     def get_dependencies(self, node: Image) -> set[Image]:
+        """Get all dependencies for an image."""
         # had to add this wrapper because nx.neighbors was dropping the attributes of some nodes (cuda, python)
         deps = set()
         for node in nx_neighbors(self, node):
             for n in self.nodes:
                 if n == node:
                     deps.add(n)
-        # will contact the maintainers of networkx at some point
-
+        # TODO will contact the maintainers of networkx at some point
         return deps
 
     def is_above(self, u_node: Image, v_node: Image) -> bool:
-        """
-        Test if one node is above another in the dependency tree
-        """
+        """Test if one node is above another in the dependency tree."""
         return nx_has_path(self, u_node, v_node)
 
     def _is_valid_build_tuple(self, bt: tuple[Image]) -> bool:
-        """
-        Verify that all the dependencies of a build tuple can be met.
-        """
+        """Verify that all the dependencies of a build tuple can be met."""
         valid = True
 
         # check for similar images
         for i0 in range(len(bt)):
-            for i2 in bt[i0 + 1:]:
+            for i2 in bt[i0 + 1 :]:
                 if bt[i0].satisfies(i2.name):
                     valid = False
 
@@ -424,7 +420,7 @@ def _is_valid_build_tuple(self, bt: tuple[Image]) -> bool:
         return valid
 
     def create_build_recipe(self, targets: list[Target]) -> tuple:
-
+        """Create a build recipe."""
         # check if all the targets exist
         for node in targets:
             if len(self.get_similar_nodes(node.node)) < 1:
@@ -484,7 +480,6 @@ def create_build_recipe(self, targets: list[Target]) -> tuple:
 
         # return valid build tuple
         for p in permutations:
-
             # clean up permutation
             clean_p = set()
             for n in p:
@@ -522,6 +517,8 @@ def create_build_recipe(self, targets: list[Target]) -> tuple:
 
 
 class ImageRepo:
+    """Image repository."""
+
     def __init__(self) -> None:
         # constraint(image, condition, type, spec, scope)
         self.constraints: list[tuple[str, str, str, str, str]] = list()
@@ -533,7 +530,7 @@ def import_from_dir(self, path: str) -> None:
         if not p.is_dir():
             raise NotADirectoryError(f"Image path {path} is not a directory!")
 
-        for name in [x for x in p.iterdir() if x.is_dir() and x.name[0] != '.']:
+        for name in [x for x in p.iterdir() if x.is_dir() and x.name[0] != "."]:
             with open(name.joinpath("specs.yaml"), "r") as fi:
                 specs = yaml_safe_load(fi)
                 # add versions
@@ -544,7 +541,7 @@ def import_from_dir(self, path: str) -> None:
                         config.get("velocity:system"),
                         config.get("velocity:backend"),
                         config.get("velocity:distro"),
-                        str(name)
+                        str(name),
                     )
                     if "when" in version:
                         if image.satisfies(version["when"]):
@@ -556,189 +553,179 @@ def import_from_dir(self, path: str) -> None:
                 # dependencies
                 if "dependencies" in specs:
                     for dependency in specs["dependencies"]:
-                        self.constraints.append((
-                            name.name,
-                            dependency["when"] if "when" in dependency else "",
-                            "dependency",
-                            dependency["spec"],
-                            dependency["scope"] if "scope" in dependency else "image"
-                        ))
+                        self.constraints.append(
+                            (
+                                name.name,
+                                dependency["when"] if "when" in dependency else "",
+                                "dependency",
+                                dependency["spec"],
+                                dependency["scope"] if "scope" in dependency else "image",
+                            )
+                        )
                 # templates
                 if "templates" in specs:
                     for template in specs["templates"]:
-                        self.constraints.append((
-                            name.name,
-                            template["when"] if "when" in template else "",
-                            "template",
-                            template["path"],
-                            template["scope"] if "scope" in template else "image"
-                        ))
+                        self.constraints.append(
+                            (
+                                name.name,
+                                template["when"] if "when" in template else "",
+                                "template",
+                                template["path"],
+                                template["scope"] if "scope" in template else "image",
+                            )
+                        )
                 # arguments
                 if "arguments" in specs:
                     for argument in specs["arguments"]:
-                        self.constraints.append((
-                            name.name,
-                            argument["when"] if "when" in argument else "",
-                            "argument",
-                            argument["value"],
-                            argument["scope"] if "scope" in argument else "image"
-                        ))
+                        self.constraints.append(
+                            (
+                                name.name,
+                                argument["when"] if "when" in argument else "",
+                                "argument",
+                                argument["value"],
+                                argument["scope"] if "scope" in argument else "image",
+                            )
+                        )
                 # variables
                 if "variables" in specs:
                     for variable in specs["variables"]:
-                        self.constraints.append((
-                            name.name,
-                            variable["when"] if "when" in variable else "",
-                            "variable",
-                            "{}={}".format(variable["name"], variable["value"]),
-                            variable["scope"] if "scope" in variable else "image"
-                        ))
+                        self.constraints.append(
+                            (
+                                name.name,
+                                variable["when"] if "when" in variable else "",
+                                "variable",
+                                "{}={}".format(variable["name"], variable["value"]),
+                                variable["scope"] if "scope" in variable else "image",
+                            )
+                        )
                 # files
                 if "files" in specs:
                     for file in specs["files"]:
-                        self.constraints.append((
-                            name.name,
-                            file["when"] if "when" in file else "",
-                            "file",
-                            file["name"],
-                            file["scope"] if "scope" in file else "image"
-                        ))
+                        self.constraints.append(
+                            (
+                                name.name,
+                                file["when"] if "when" in file else "",
+                                "file",
+                                file["name"],
+                                file["scope"] if "scope" in file else "image",
+                            )
+                        )
                 # prologs
                 if "prologs" in specs:
                     for prolog in specs["prologs"]:
-                        self.constraints.append((
-                            name.name,
-                            prolog["when"] if "when" in prolog else "",
-                            "prolog",
-                            prolog["script"],
-                            prolog["scope"] if "scope" in prolog else "image"
-                        ))
+                        self.constraints.append(
+                            (
+                                name.name,
+                                prolog["when"] if "when" in prolog else "",
+                                "prolog",
+                                prolog["script"],
+                                prolog["scope"] if "scope" in prolog else "image",
+                            )
+                        )
 
     def create_build_recipe(self, targets: list[str]) -> tuple:
-        images = deepcopy(self.images)
+        """Create an ordered build recipe of images."""
+        images: set[Image] = deepcopy(self.images)
 
-        build_targets = list()
-        targs = list()
-        for t in targets:
+        build_targets: list[Target] = list()
+        targs: list[Image] = list()
+        for target in targets:
             res = re_fullmatch(
                 r"^(?P<name>[a-zA-Z0-9-]+)(?:(?:@(?P<left>[\d\.]+)(?!@))?(?:@?(?P<colen>:)(?P<right>[\d\.]+)?)?)?$",
-                t
+                target,
             )
             if res is not None:
                 gd: dict = res.groupdict()
-                if gd["left"] is not None and gd["right"] is None:  # n@v: or n@v
+                # n@v: or n@v
+                if gd["left"] is not None and gd["right"] is None:
+                    t = Image(
+                        gd["name"],
+                        gd["left"],
+                        config.get("velocity:system"),
+                        config.get("velocity:backend"),
+                        config.get("velocity:distro"),
+                        "",
+                    )
+                    targs.append(t)
                     if gd["colen"] is not None:
-                        t = Image(
-                                gd["name"],
-                                gd["left"],
-                                config.get("velocity:system"),
-                                config.get("velocity:backend"),
-                                config.get("velocity:distro"),
-                                ""
-                            )
-                        build_targets.append(Target(
-                            t,
-                            DepOp.GE
-                        ))
-                        targs.append(t)
+                        build_targets.append(Target(t, DepOp.GE))
                     else:
-                        t = Image(
-                                gd["name"],
-                                gd["left"],
-                                config.get("velocity:system"),
-                                config.get("velocity:backend"),
-                                config.get("velocity:distro"),
-                                ""
-                            )
-                        build_targets.append(Target(
-                            t,
-                            DepOp.EQ
-                        ))
-                        targs.append(t)
-                elif gd["left"] is None and gd["right"] is not None:  # n@:v
+                        build_targets.append(Target(t, DepOp.EQ))
+                # n@:v
+                elif gd["left"] is None and gd["right"] is not None:
                     if gd["colen"] is not None:
                         t = Image(
-                                gd["name"],
-                                gd["right"],
-                                config.get("velocity:system"),
-                                config.get("velocity:backend"),
-                                config.get("velocity:distro"),
-                                ""
-                            )
-                        build_targets.append(Target(
-                            t,
-                            DepOp.LE
-                        ))
+                            gd["name"],
+                            gd["right"],
+                            config.get("velocity:system"),
+                            config.get("velocity:backend"),
+                            config.get("velocity:distro"),
+                            "",
+                        )
+                        build_targets.append(Target(t, DepOp.LE))
                         targs.append(t)
                     else:
-                        raise InvalidImageVersionError()
-                elif gd["left"] is None and gd["right"] is None:  # n
+                        raise InvalidImageVersionError("Invalid version '{}'.".format(target))
+                # n
+                elif gd["left"] is None and gd["right"] is None:
                     if gd["colen"] is not None:
-                        raise InvalidImageVersionError()
+                        raise InvalidImageVersionError("Invalid version '{}'.".format(target))
                     else:
                         t = Image(
-                                gd["name"],
-                                "",
-                                config.get("velocity:system"),
-                                config.get("velocity:backend"),
-                                config.get("velocity:distro"),
-                                ""
-                            )
-                        build_targets.append(Target(
-                            t,
-                            DepOp.EQ
-                        ))
-                        targs.append(t)
-                else:  # n@v:v
-                    t = Image(
                             gd["name"],
-                            gd["left"],
+                            "",
                             config.get("velocity:system"),
                             config.get("velocity:backend"),
                             config.get("velocity:distro"),
-                            ""
+                            "",
                         )
-                    build_targets.append(Target(
-                        t,
-                        DepOp.GE
-                    ))
+                        build_targets.append(Target(t, DepOp.UN))
+                        targs.append(t)
+                # n@v:v
+                else:
+                    t = Image(
+                        gd["name"],
+                        gd["left"],
+                        config.get("velocity:system"),
+                        config.get("velocity:backend"),
+                        config.get("velocity:distro"),
+                        "",
+                    )
+                    build_targets.append(Target(t, DepOp.GE))
                     targs.append(t)
                     t = Image(
-                            gd["name"],
-                            gd["right"],
-                            config.get("velocity:system"),
-                            config.get("velocity:backend"),
-                            config.get("velocity:distro"),
-                            ""
-                        )
-                    build_targets.append(Target(
-                        t,
-                        DepOp.LE
-                    ))
+                        gd["name"],
+                        gd["right"],
+                        config.get("velocity:system"),
+                        config.get("velocity:backend"),
+                        config.get("velocity:distro"),
+                        "",
+                    )
+                    build_targets.append(Target(t, DepOp.LE))
                     targs.append(t)
             else:
                 raise NoAvailableBuild("No available build!")
 
         # apply constraints
-        for constraint in self.constraints:
-            if constraint[4] == "build":
-                for targ in targs:
-                    if targ.satisfies(constraint[1]):
-                        for image in images:
-                            image.apply_constraint(
-                                constraint[0],
-                                constraint[2],
-                                constraint[3]
-                            )
-
-            else:   # default is image
-                for image in images:
-                    image.apply_constraint(
-                        "{} {}".format(constraint[0], constraint[1]),
-                        constraint[2],
-                        constraint[3]
-                    )
-
+        images_changed: bool = True
+        while images_changed:
+            images_changed = False
+            for constraint in self.constraints:
+                if constraint[4] == "build":
+                    for targ in targs:
+                        if targ.satisfies(constraint[1]):
+                            for image in images:
+                                if image.apply_constraint(constraint[0], constraint[2], constraint[3]):
+                                    images_changed = True
+                # default is constraint[4] == "image"
+                else:
+                    for image in images:
+                        if image.apply_constraint(
+                            "{} {}".format(constraint[0], constraint[1]), constraint[2], constraint[3]
+                        ):
+                            images_changed = True
+
+        # create graph
         ig = ImageGraph()
         for image in images:
             ig.add_node(image)
@@ -748,5 +735,12 @@ def create_build_recipe(self, targets: list[str]) -> tuple:
                     if di.satisfies(dep):
                         ig.add_edge(image, di)
 
-        return ig.create_build_recipe(build_targets)
+        bt: tuple[Image] = ig.create_build_recipe(build_targets)
+
+        # update images so that their hash includes the layers below them
+        cumulative_deps: int = 0
+        for b in bt:
+            b.underlay = cumulative_deps
+            cumulative_deps = cumulative_deps + int(b.id, 16)
 
+        return bt
diff --git a/tests/test__graph.py b/tests/test__graph.py
index e94a65f..d188d5b 100644
--- a/tests/test__graph.py
+++ b/tests/test__graph.py
@@ -1,7 +1,6 @@
 from unittest import TestCase
 from re import compile
 from src.velocity._graph import (
-    VERSION_REGEX,
     Version,
     Image
 )
@@ -9,7 +8,7 @@
 
 class Test(TestCase):
     def test_version_regex(self):
-        p = compile(VERSION_REGEX)
+        p = compile(r"^(?P<major>[0-9]+)(?:\.(?P<minor>[0-9]+)(:?\.(?P<patch>[0-9]+))?)?(?:-(?P<suffix>[a-zA-Z0-9]+))?$")
 
         # test 2.3.5-s90er
         m = p.search("2.3.5-s90er")

From 6acb94d837c49ce3cd49a4e1bd6e3497f28c3b94 Mon Sep 17 00:00:00 2001
From: Asa Rentschler <rentschleraj@ornl.gov>
Date: Fri, 13 Sep 2024 14:35:08 -0400
Subject: [PATCH 05/10] Major bug fixes and improvments. Getting close!

---
 src/velocity/__init__.py    |   6 +-
 src/velocity/__main__.py    | 441 ++++++++++++++----------------------
 src/velocity/_backends.py   |  35 ++-
 src/velocity/_build.py      |  51 +++--
 src/velocity/_config.py     |  82 +++++--
 src/velocity/_exceptions.py |  59 +++--
 src/velocity/_graph.py      | 227 +++++++++++++------
 7 files changed, 477 insertions(+), 424 deletions(-)

diff --git a/src/velocity/__init__.py b/src/velocity/__init__.py
index 990b15e..28386da 100644
--- a/src/velocity/__init__.py
+++ b/src/velocity/__init__.py
@@ -1,5 +1,5 @@
+from loguru import logger; logger.disable("velocity")  # disable logging at the module level
 from ._config import config
 
-__all__ = [
-    config
-]
+
+__all__ = [config]
diff --git a/src/velocity/__main__.py b/src/velocity/__main__.py
index 7fbdd35..0c82b96 100644
--- a/src/velocity/__main__.py
+++ b/src/velocity/__main__.py
@@ -1,285 +1,180 @@
+"""Run velocity as a script."""
+
 import argparse
-import re
-import os
-import editor
-from pathlib import Path
+import sys
+from docutils.parsers.rst.directives.images import Image
+from loguru import logger
+from importlib.metadata import version
 from colorama import Fore, Style
-from ._graph import ImageRepo, Target, DepOp
-from ._build import Builder
-from ._print import p1print, sp1print, TextBlock, wprint, print_text_blocks
+from ._graph import ImageRepo
+from ._build import ImageBuilder
+from ._print import header_print, indent_print, TextBlock, bare_print
 from ._config import config
 
-
 ############################################################
-# Main
+# Parse Args
 ############################################################
-if __name__ == '__main__':
-
-    ############################################################
-    # Load Config
-    ############################################################
-    if os.getenv('VELOCITY_SYSTEM') is not None:
-        config.set("velocity:system", os.getenv('VELOCITY_SYSTEM'))
-    if os.getenv('VELOCITY_BACKEND') is not None:
-        config.set("velocity:backend", os.getenv('VELOCITY_BACKEND'))
-    if os.getenv('VELOCITY_DISTRO') is not None:
-        config.set("velocity:distro", os.getenv('VELOCITY_DISTRO'))
-    if os.getenv('VELOCITY_BUILD_DIR') is not None:
-        config.set("velocity:build_dir", os.getenv('VELOCITY_BUILD_DIR'))
-
-    ############################################################
-    # Parse Args
-    ############################################################
-    parser = argparse.ArgumentParser(
-        prog='velocity',
-        description='Build tool for OLCF containers',
-        epilog='See (https://gitlab.ccs.ornl.gov/saue-software/velocity)')
-    parser.add_argument('-v', '--version', action='version',
-                        version=f"%(prog)s {config.get('velocity:version')}", help="program version")
-    parser.add_argument('-b', '--backend', action='store')
-    parser.add_argument('-s', '--system', action='store')
-    parser.add_argument('-d', '--distro', action='store')
-
-    # create sub_parsers
-    sub_parsers = parser.add_subparsers(dest='subcommand')
-
-    # create build_parser
-    build_parser = sub_parsers.add_parser('build', help="build specified container image")
-    build_parser.add_argument('-d', '--dry-run', action='store_true', help="dry run build system")
-    build_parser.add_argument('targets', type=str, nargs='+', help='build targets')
-    build_parser.add_argument('-n', '--name', action='store', help='name of complete image')
-    build_parser.add_argument('-l', '--leave-tags', action='store_true',
-                              help="do not clean up intermediate build tags (only applies to podman)")
-    build_parser.add_argument('-v', '--verbose', action='store_true', help="print helpful debug/runtime information")
-
-    # create avail_parser
-    avail_parser = sub_parsers.add_parser('avail', help="lookup available images")
-
-    # create spec_parser
-    spec_parser = sub_parsers.add_parser('spec', help="lookup image dependencies")
-    spec_parser.add_argument('targets', type=str, nargs='+', help='spec targets')
-
-    # create edit_parser
-    edit_parser = sub_parsers.add_parser('edit', help="edit image files")
-    edit_parser.add_argument('target', help='image to edit')
-    edit_parser.add_argument('-s', '--specification', action='store_true', help="edit the specifications file")
-
-    # create create_parser
-    edit_parser = sub_parsers.add_parser('create', help="create a new image with default template")
-    edit_parser.add_argument('name', help='name of image to create')
-    edit_parser.add_argument('version', help='version of image to create')
-
-    # parse args
-    args = parser.parse_args()
+parser = argparse.ArgumentParser(
+    prog="velocity",
+    description="build tool for OLCF containers",
+    epilog="See https://github.com/olcf/velocity",
+)
+parser.add_argument(
+    "-v", "--version", action="version", version=f"%(prog)s {version('velocity')}", help="program version"
+)
+parser.add_argument(
+    "-D",
+    "--debug",
+    choices=["TRACE", "DEBUG", "INFO", "SUCCESS", "WARNING", "ERROR", "CRITICAL"],
+    help="set debug output level",
+)
+parser.add_argument("-b", "--backend")
+parser.add_argument("-s", "--system")
+parser.add_argument("-d", "--distro")
+
+# create sub_parsers
+sub_parsers = parser.add_subparsers(dest="subcommand")
+
+# create build_parser
+build_parser = sub_parsers.add_parser("build", help="build specified container image")
+build_parser.add_argument("-d", "--dry-run", action="store_true", help="dry run build system")
+build_parser.add_argument("targets", type=str, nargs="+", help="build targets")
+build_parser.add_argument("-n", "--name", action="store", help="name of complete image")
+build_parser.add_argument(
+    "-l", "--leave-tags", action="store_true", help="do not clean up intermediate build tags (only applies to podman)"
+)
+build_parser.add_argument("-v", "--verbose", action="store_true", help="print helpful debug/runtime information")
+
+# create avail_parser
+avail_parser = sub_parsers.add_parser("avail", help="lookup available images")
+
+# create spec_parser
+spec_parser = sub_parsers.add_parser("spec", help="lookup image dependencies")
+spec_parser.add_argument("targets", type=str, nargs="+", help="spec targets")
+
+# parse args
+args = parser.parse_args()
 
-    ############################################################
-    # apply user run time arguments over settings
-    ############################################################
-    if args.system is not None:
-        config.set("velocity:system", args.system)
-    if args.backend is not None:
-        config.set("velocity:backend", args.backend)
-    if args.distro is not None:
-        config.set("velocity:distro", args.distro)
+############################################################
+# apply user run time arguments over settings
+############################################################
+if args.debug is not None:
+    config.set("velocity:debug", args.debug)
+if args.system is not None:
+    config.set("velocity:system", args.system)
+if args.backend is not None:
+    config.set("velocity:backend", args.backend)
+if args.distro is not None:
+    config.set("velocity:distro", args.distro)
+
+# setup logging and log startup
+logger.enable("velocity")
+logger.configure(handlers=[{"sink": sys.stdout, "level": config.get("velocity:debug")}])
+logger.debug(
+    "Starting velocity {},{},{}.".format(
+        config.get("velocity:system"), config.get("velocity:backend"), config.get("velocity:distro")
+    )
+)
+logger.trace(config.get(""))
 
-    ############################################################
-    # Load images
-    ############################################################
-    imageRepo = ImageRepo()
-    imageRepo.import_from_dir("/home/xjv/PycharmProjects/velocity-images")
+############################################################
+# Load images
+############################################################
+imageRepo = ImageRepo()
+for p in config.get("velocity:image_path").split(":"):
+    imageRepo.import_from_dir(p)
 
-    # print backend, system, distro
-    """
-    p1print([
-        TextBlock(f"System: "),
-        TextBlock(f"{SETTINGS['VELOCITY_SYSTEM']}", fore=Fore.MAGENTA, style=Style.BRIGHT)
-    ])
-    p1print([
-        TextBlock(f"Backend: "),
-        TextBlock(f"{SETTINGS['VELOCITY_BACKEND']}", fore=Fore.MAGENTA, style=Style.BRIGHT)
-    ])
-    p1print([
-        TextBlock(f"Distro: "),
-        TextBlock(f"{SETTINGS['VELOCITY_DISTRO']}", fore=Fore.MAGENTA, style=Style.BRIGHT)
-    ])
+############################################################
+# Handle User Commands
+############################################################
+if args.subcommand == "build":
+    # get recipe
+    recipe = imageRepo.create_build_recipe(args.targets)[0]
+
+    # print build specs
+    header_print([TextBlock("Build Order:")])
+    for r in recipe:
+        indent_print([TextBlock(f"{r.name}@{r.version}", fore=Fore.MAGENTA, style=Style.BRIGHT)])
+    print()  # newline
+
+    # prep builder
+    builder = ImageBuilder(
+        recipe, build_name=args.name, dry_run=args.dry_run, remove_tags=not args.leave_tags, verbose=args.verbose
+    )
+
+    # build
+    builder.build()
+
+elif args.subcommand == "avail":
+    # group and order
+    grouped = dict()
+    for node in imageRepo.images:
+        if node.name not in grouped:
+            grouped[node.name] = list()
+        grouped[node.name].append(node)
+    ordered = list(grouped.keys())
+    ordered.sort()
+
+    # print
+    for group in ordered:
+        header_print([TextBlock(group, fore=Fore.RED, style=Style.BRIGHT)])
+        deps = grouped[group]
+        deps.sort()
+        for t in deps:
+            indent_print([TextBlock(t.version, fore=Fore.YELLOW, style=Style.BRIGHT)])
     print()  # add newline
-    """
-
-    ############################################################
-    # Handle User Commands
-    ############################################################
-    if args.subcommand == 'build':
-        # parse targets
-
-        # get recipe
-        recipe = imageRepo.create_build_recipe(args.targets)
-
-        # print build specs
-        p1print([
-            TextBlock('Build Order:')
-        ])
-        for r in recipe:
-            sp1print([
-                TextBlock(f"{r.name}@{r.version}", fore=Fore.MAGENTA, style=Style.BRIGHT)
-            ])
-        print()  # add newline
-
-        # prep builder
-        builder = Builder(
-            recipe,
-            build_name=args.name,
-            dry_run=args.dry_run,
-            leave_tags=args.leave_tags,
-            verbose=args.verbose
-        )
 
-        # build
-        builder.build()
-
-    elif args.subcommand == 'avail':
-
-        # group and order
-        grouped = dict()
-        for node in imageRepo.images:
-            if node.name not in grouped:
-                grouped[node.name] = list()
-            grouped[node.name].append(node)
-        ordered = list(grouped.keys())
-        ordered.sort()
-
-        # print
-        for group in ordered:
-            p1print([
-                TextBlock(group, fore=Fore.RED, style=Style.BRIGHT)
-            ])
-            deps = grouped[group]
-            deps.sort()
-            for t in deps:
-                sp1print([
-                    TextBlock(t.version, fore=Fore.YELLOW, style=Style.BRIGHT)
-                ])
-        print()  # add newline
-
-    elif args.subcommand == 'spec':
-        # parse targets
-        targets = []
-        for target in args.targets:
-            result = re.search(r'^(.*)@(.*)([%^_=])(.*)$', target)
-            if result is not None:
-                if result[3] == '=':
-                    targets.append(Target(Node(result[1], result[4]), DepOp.EQ))
-                elif result[3] == '^':
-                    targets.append(Target(Node(result[1], result[4]), DepOp.GE))
-                elif result[3] == '_':
-                    targets.append(Target(Node(result[1], result[4]), DepOp.LE))
-                elif result[3] == '%':
-                    targets.append(Target(Node(result[1], result[2]), DepOp.GE))
-                    targets.append(Target(Node(result[1], result[4]), DepOp.LE))
-            else:
-                targets.append(Target(Node(target, ''), DepOp.UN))
-
-        # get recipe
-        recipe = imageGraph.create_build_recipe(targets)
-
-        # flatten dependency tree
-        flat_dep_tree = dict()
-        for r in recipe:
-            flat_dep_tree[r.name] = set()
-            deps = set(imageGraph.get_dependencies(r))
-            for o in deps.intersection(set(recipe)):
-                flat_dep_tree[r.name].add(o.name)
-        # get top level entries
-        top_level_entries = set()
-        deps = set()
-        for r in recipe:
-            deps.update(imageGraph.get_dependencies(r))
-        for r in recipe:
-            if r not in deps:
-                top_level_entries.add(r)
-
-
-        def spec_print(seed: str, indent: int, fdt: dict, rs: tuple[Node]):
-            """
-            Recursive function to print dep tree
-            """
-            spec = None
-            for _ in rs:
-                if _.similar(Node(seed, '')):
-                    spec = f"{_.name}@={_.tag}"
-            print('  ' + '   ' * indent, end='')
-            if indent == 0:
-                print_text_blocks([
-                    TextBlock('> ', fore=Fore.RED, style=Style.BRIGHT),
-                    TextBlock(spec, fore=Fore.MAGENTA, style=Style.BRIGHT)
-                ])
-            else:
-                print_text_blocks([
-                    TextBlock('^', fore=Fore.GREEN, style=Style.BRIGHT),
-                    TextBlock(spec, fore=Fore.MAGENTA, style=Style.BRIGHT)
-                ])
-            if len(fdt[seed]) > 0:
-                for un in fdt[seed]:
-                    spec_print(un, (indent + 1), fdt, rs)
-
-
-        # print specs
-        for tl in top_level_entries:
-            spec_print(tl.name, 0, flat_dep_tree, recipe)
-        print()  # add newline
-
-    elif args.subcommand == 'edit':
-
-        name = None
-        tag = None
-        result = re.search(r'^(.*)@=(.*)$', args.target)
-        if result:
-            name = Path(SETTINGS['VELOCITY_IMAGE_DIR']).joinpath(result[1])
-            tag = Path.joinpath(name, result[2])
-        else:
-            name = Path(SETTINGS['VELOCITY_IMAGE_DIR']).joinpath(args.target)
-
-        if name.is_dir():
-            if tag is None:
-                tags = list(name.iterdir())
-                tags.sort()
-                tag = Path.joinpath(name, tags[-1])
-
-            if tag.is_dir():
-                if args.specification:
-                    file = Path.joinpath(tag, 'specifications.yaml')
-                else:
-                    file = Path.joinpath(tag, 'templates', f"{SETTINGS['VELOCITY_DISTRO']}.vtmp")
-
-                if file.is_file():
-                    editor.edit(file)
-                else:
-                    raise FileNotFoundError(file)
-            else:
-                raise NotADirectoryError(tag)
+elif args.subcommand == "spec":
+    # get recipe
+    recipe, graph = imageRepo.create_build_recipe(args.targets)
+
+    # flatten dependency tree
+    flat_dep_tree = dict()
+    for r in recipe:
+        flat_dep_tree[r.name] = set()
+        deps = set(graph.get_dependencies(r))
+        for o in deps.intersection(set(recipe)):
+            flat_dep_tree[r.name].add(o.name)
+    # get top level entries
+    top_level_entries = set()
+    deps = set()
+    for r in recipe:
+        deps.update(graph.get_dependencies(r))
+    for r in recipe:
+        if r not in deps:
+            top_level_entries.add(r)
+
+    def spec_print(seed: str, indent: int, fdt: dict, rs: tuple[Image]):
+        """
+        Recursive function to print dep tree
+        """
+        spec = ""
+        for _ in rs:
+            if _.satisfies(seed):
+                spec = "{}@{}".format(_.name, _.version)
+        print("  " + "   " * indent, end="")
+        if indent == 0:
+            bare_print(
+                [
+                    TextBlock("> ", fore=Fore.RED, style=Style.BRIGHT),
+                    TextBlock(spec, fore=Fore.MAGENTA, style=Style.BRIGHT),
+                ]
+            )
         else:
-            raise NotADirectoryError(name)
-
-    elif args.subcommand == 'create':
-        image_dir = Path(SETTINGS['VELOCITY_IMAGE_DIR']).joinpath(args.name, args.version)
-        if image_dir.is_dir():
-            raise FileExistsError(f"'{image_dir}' already exist!")
-        os.mkdir(image_dir)
-        os.mkdir(image_dir.joinpath('templates'))
-        with open(image_dir.joinpath('specifications.yaml'), 'w') as spec_file:
-            spec_file.write('---\n')
-            spec_file.write('\n')
-            spec_file.write('build_specifications:\n')
-            spec_file.write(f"  {SETTINGS['VELOCITY_SYSTEM']}:\n")
-            spec_file.write(f"    {SETTINGS['VELOCITY_BACKEND']}:\n")
-            spec_file.write(f"      {SETTINGS['VELOCITY_DISTRO']}: {{}}\n")
-        with open(image_dir.joinpath('templates', f"{SETTINGS['VELOCITY_DISTRO']}.vtmp"), 'x') as temp_file:
-            temp_file.write('\n')
-            temp_file.write('@from\n')
-            temp_file.write('    %(__base__)\n')
-            temp_file.write('\n')
-            temp_file.write('@label\n')
-            temp_file.write('    velocity.image.%(__name__)__%(__tag__) %(__hash__)\n')
-
-    else:
-        parser.print_help()
-        print()  # add newline
\ No newline at end of file
+            bare_print(
+                [
+                    TextBlock("^", fore=Fore.GREEN, style=Style.BRIGHT),
+                    TextBlock(spec, fore=Fore.MAGENTA, style=Style.BRIGHT),
+                ]
+            )
+        if len(fdt[seed]) > 0:
+            for un in fdt[seed]:
+                spec_print(un, (indent + 1), fdt, rs)
+
+    # print specs
+    for tl in top_level_entries:
+        spec_print(tl.name, 0, flat_dep_tree, recipe)
+    print()  # add newline
+else:
+    parser.print_help()
+    print()  # add newline
diff --git a/src/velocity/_backends.py b/src/velocity/_backends.py
index 8a71932..e62174d 100644
--- a/src/velocity/_backends.py
+++ b/src/velocity/_backends.py
@@ -94,7 +94,7 @@ def _filter_content(cls, image: Image, text: str) -> str:
                 text = ""
 
         # remove comments, newlines, and superfluous white space
-        text = re_sub(r"###.*", "", text)
+        text = re_sub(r">>>.*", "", text)
         text = re_sub(r"\n", "", text)
         text = re_sub(r"^\s+|\s+$", "", text)
 
@@ -121,6 +121,7 @@ def __init__(self, name: str, executable: str) -> None:
 
     def generate_script(self, image: Image, variables: dict[str, str]) -> list[str]:
         """Generate a build script e.g. .dockerfile/.def"""
+        logger.debug("Variables: {}".format(variables))
         template: list[str] = self._load_template(image, variables)
         sections: dict[str, list[str]] = self._get_sections(template)
         script: list[str] = list()
@@ -149,10 +150,11 @@ def generate_script(self, image: Image, variables: dict[str, str]) -> list[str]:
         if "@run" in sections:
             env_ext: list[str] = list()
             script.extend(self._run(sections["@run"], env_ext))
-            if "@env" in sections:
-                sections["@env"].extend(env_ext)
-            else:
-                sections["@env"] = env_ext
+            if len(env_ext) > 0:
+                if "@env" in sections:
+                    sections["@env"].extend(env_ext)
+                else:
+                    sections["@env"] = env_ext
         # @env
         if "@env" in sections:
             script.extend(self._env(sections["@env"]))
@@ -224,9 +226,14 @@ def format_image_name(self, path: Path, tag: str) -> str:
     def clean_up_old_image_tag(self, name: str) -> str:
         """Generate CLI command to clean up an old image."""
 
+    @abstractmethod
     def build_exists(self, name: str) -> bool:
         """Check if an images has been built."""
 
+    @abstractmethod
+    def generate_final_image_cmd(self, src: str, dest: str) -> str:
+        """Generate command to move the last image in the build to its final destination."""
+
 
 class Podman(Backend):
     """Podman backend."""
@@ -348,11 +355,14 @@ def format_image_name(self, path: Path, tag: str) -> str:
         return "{}{}{}".format("localhost/" if "/" not in tag else "", tag, ":latest" if ":" not in tag else "")
 
     def clean_up_old_image_tag(self, name: str) -> str:
-        return "podman untag {}".format(name)
+        return "podman rmi {}".format(name)
 
     def build_exists(self, name: str) -> bool:
         return False
 
+    def generate_final_image_cmd(self, src: str, dest: str) -> str:
+        return "{} tag {} {}".format(self.executable, src, dest)
+
 
 class Apptainer(Backend):
     """Apptainer backend."""
@@ -391,7 +401,7 @@ def _copy(self, contents: list[str]) -> list[str]:
         for ln in contents:
             if len(ln.split()) != 2:
                 raise TemplateSyntaxError("Your '@copy' can only have one source and destination!", ln)
-            ret.append("    {}".format(ln))
+            ret.append("{}".format(ln))
         return ret
 
     def _run(self, contents: list[str], label_contents: list[str]) -> list[str]:
@@ -402,25 +412,25 @@ def _run(self, contents: list[str], label_contents: list[str]) -> list[str]:
                 res = re_match(r"^!envar\s+(?P<name>\S+)\s+(?P<value>.*)$", cmd)
                 cmd = 'export {name}="{value}"'.format(**res.groupdict())
                 label_contents.append("{name} {value}".format(**res.groupdict()))
-            ret.append("    {}".format(cmd))
+            ret.append("{}".format(cmd))
         return ret
 
     def _env(self, contents: list[str]) -> list[str]:
         ret: list[str] = ["", "%environment"]
         for env in contents:
             parts = env.split()
-            ret.append('    export {}="{}"'.format(parts[0], env.lstrip(parts[0]).strip(" ")))
+            ret.append('export {}="{}"'.format(parts[0], env.lstrip(parts[0]).strip(" ")))
         return ret
 
     def _label(self, contents: list[str]) -> list[str]:
         ret: list[str] = ["", "%labels"]
         for label in contents:
             parts = label.split()
-            ret.append("    {} {}".format(parts[0], label.lstrip(parts[0]).strip(" ")))
+            ret.append("{} {}".format(parts[0], label.lstrip(parts[0]).strip(" ")))
         return ret
 
     def _entry(self, contents: list[str]) -> list[str]:
-        return ["", "%runscript", "    {}".format(contents[0])]
+        return ["", "%runscript", "{}".format(contents[0])]
 
     def generate_build_cmd(self, src: str, dest: str, args: list = None) -> str:
         cmd: list[str] = ["{} build".format(self.executable)]
@@ -444,6 +454,9 @@ def build_exists(self, name: str) -> bool:
             return True
         return False
 
+    def generate_final_image_cmd(self, src: str, dest: str) -> str:
+        return "cp {} {}".format(src, dest)
+
 
 def get_backend() -> Backend:
     backend = config.get("velocity:backend")
diff --git a/src/velocity/_build.py b/src/velocity/_build.py
index 458d114..27d7c41 100644
--- a/src/velocity/_build.py
+++ b/src/velocity/_build.py
@@ -9,6 +9,7 @@
 from threading import Thread
 from pathlib import Path
 from colorama import Fore, Style
+from platform import processor as arch
 from ._config import config
 from ._graph import Image
 from ._print import header_print, indent_print, TextBlock
@@ -97,6 +98,10 @@ def __init__(
         self.build_dir = Path(config.get("velocity:build_dir"))
         self.build_dir.mkdir(mode=0o777, parents=True, exist_ok=True)
 
+        self.variables: dict[str, str] = dict()
+        for i in self.build_units:
+            self.variables["__{}__version__".format(i.name)] = i.version.__str__()
+
     def build(self) -> None:
         """Launch image builds."""
         # store pwd
@@ -110,28 +115,34 @@ def build(self) -> None:
                 else:
                     entry.unlink()
 
-        last = None  # last image that was built
+        last = str()  # last image that was built
+        build_names: list[str] = list()
         for u in self.build_units:
-            if u == self.build_units[-1]:
-                tag = str(
-                    self.build_name
-                    if self.build_name is not None
-                    else "{}__{}-{}".format(
-                        "_".join(f"{bu.name}-{bu.version}" for bu in reversed(self.build_units)),
-                        config.get("velocity:system"),
-                        config.get("velocity:distro"),
-                    )
-                )
-                name = self.backend_engine.format_image_name(Path(pwd.absolute()), tag)
-            else:
-                name = self.backend_engine.format_image_name(
-                    Path.joinpath(self.build_dir, "{}-{}-{}".format(u.name, u.version, u.id)),
-                    u.id
-                )
+            name = self.backend_engine.format_image_name(
+                Path.joinpath(self.build_dir, "{}-{}-{}".format(u.name, u.version, u.id)), u.id
+            )
             self._build_image(u, last, name)
-            if not self.dry_run and self.remove_tags and last is not None:
-                run(self.backend_engine.clean_up_old_image_tag(last))
             last = name
+            build_names.append(name)
+
+        tag = str(
+            self.build_name
+            if self.build_name is not None
+            else "{}__{}-{}".format(
+                "_".join(f"{bu.name}-{bu.version}" for bu in reversed(self.build_units)),
+                config.get("velocity:system"),
+                config.get("velocity:distro"),
+            )
+        )
+
+        final_name = self.backend_engine.format_image_name(Path(pwd.absolute()), tag)
+        if not self.dry_run:
+            run(self.backend_engine.generate_final_image_cmd(last, final_name))
+        header_print([TextBlock("BUILT: "), TextBlock(final_name, fore=Fore.MAGENTA, style=Style.BRIGHT)])
+
+        if not self.dry_run and self.remove_tags:
+            for bn in build_names:
+                run(self.backend_engine.clean_up_old_image_tag(bn))
 
         # go back to the starting dir
         os.chdir(pwd)
@@ -196,8 +207,10 @@ def _build_image(self, unit: Image, src_image: str, name: str):
         script_variables.update(
             {"__threads__": str(int(os.cpu_count() * 0.75) if int(os.cpu_count() * 0.75) < 16 else 16)}
         )
+        script_variables.update({"__arch__": arch()})
         if src_image is not None:
             script_variables.update({"__base__": src_image})
+        script_variables.update(self.variables)
 
         script = self.backend_engine.generate_script(unit, script_variables)
         # write out script
diff --git a/src/velocity/_config.py b/src/velocity/_config.py
index 8ced3c8..87101fa 100644
--- a/src/velocity/_config.py
+++ b/src/velocity/_config.py
@@ -3,8 +3,8 @@
 from loguru import logger
 from platform import processor as arch
 from pathlib import Path
-from os import getlogin as get_username
-from importlib.metadata import version
+from os import getlogin as get_username, getenv
+from yaml import safe_load as yaml_safe_load
 from ._exceptions import InvalidConfigIdentifier
 
 
@@ -24,9 +24,7 @@ def set(self, item: str, value: int | bool | str | list | dict | None) -> None:
                 for p in parts:
                     # make all config identifiers comply with python identifiers
                     if not p.isidentifier():
-                        raise InvalidConfigIdentifier(
-                            "'{}' is not a valid identifier.".format(item)
-                        )
+                        raise InvalidConfigIdentifier("'{}' is not a valid identifier.".format(item))
                     # walk config tree until the final node is found
                     if p != parts[-1]:
                         if p not in set_value:
@@ -48,9 +46,7 @@ def get(self, item: str) -> int | bool | str | list | dict | None:
                 # make all config identifiers comply with python identifiers
                 for p in parts:
                     if not p.isidentifier():
-                        raise InvalidConfigIdentifier(
-                            "'{}' is not a valid identifier.".format(item)
-                        )
+                        raise InvalidConfigIdentifier("'{}' is not a valid identifier.".format(item))
                     ret_value = ret_value[p]
                 return ret_value
             else:
@@ -61,24 +57,66 @@ def get(self, item: str) -> int | bool | str | list | dict | None:
             logger.exception(e)
         return None
 
+    def load(self) -> None:
+        """Load configuration."""
+        if self.get("velocity:config_dir") is None:
+            self.set("velocity:config_dir", Path.home().joinpath(".velocity").__str__())
+        config_dir = Path(self.get("velocity:config_dir"))
+        try:
+            with open(config_dir.joinpath("config.yaml"), "r") as fi:
+                conf = yaml_safe_load(fi)
+                for k in conf:
+                    self.set(k, conf[k])
+        except FileNotFoundError:
+            logger.warning("Could not load configuration file from '{}'!".format(config_dir.joinpath("config.yaml")))
+
     def __str__(self) -> str:
         return str(self._config)
 
 
 # default configuration & singleton
 _config = Config()
-_config.set(
-    "velocity",
-    {
-        "system": arch(),
-        "backend": "apptainer",
-        "distro": "ubuntu",
-        "verbose": False,
-        "debug": "WARNING",
-        "config_dir": Path.home().joinpath(".velocity", "config"),
-        "image_path": Path.home().joinpath(".velocity", "images"),
-        "build_dir": Path("/tmp").joinpath(get_username(), "velocity"),
-        "version": version("velocity")
-    },
-)
+_config.load()
+
+# get config from environment variables
+if getenv("VELOCITY_SYSTEM") is not None:
+    _config.set("velocity:system", getenv("VELOCITY_SYSTEM"))
+
+if getenv("VELOCITY_BACKEND") is not None:
+    _config.set("velocity:backend", getenv("VELOCITY_BACKEND"))
+
+if getenv("VELOCITY_DISTRO") is not None:
+    _config.set("velocity:distro", getenv("VELOCITY_DISTRO"))
+
+if getenv("VELOCITY_CONFIG_DIR") is not None:
+    _config.set("velocity:config_dir", getenv("VELOCITY_CONFIG_DIR"))
+
+if getenv("VELOCITY_IMAGE_PATH") is not None:
+    _config.set("velocity:image_path", getenv("VELOCITY_IMAGE_PATH"))
+
+if getenv("VELOCITY_BUILD_DIR") is not None:
+    _config.set("velocity:build_dir", getenv("VELOCITY_BUILD_DIR"))
+
+# set defaults for un-configured items
+if _config.get("velocity:system") is None:
+    _config.set("velocity:system", arch())
+
+if _config.get("velocity:backend") is None:
+    _config.set("velocity:backend", "apptainer")
+
+if _config.get("velocity:distro") is None:
+    _config.set("velocity:distro", "ubuntu")
+
+if _config.get("velocity:debug") is None:
+    _config.set("velocity:debug", "WARNING")
+
+if _config.get("velocity:image_path") is None:
+    image_dir = Path.home().joinpath(".velocity", "images")
+    image_dir.mkdir(parents=True, exist_ok=True)
+    _config.set("velocity:image_path", image_dir.__str__())
+
+if _config.get("velocity:build_dir") is None:
+    _config.set("velocity:build_dir", Path("/tmp").joinpath(get_username(), "velocity").__str__())
+
+# export
 config = _config
diff --git a/src/velocity/_exceptions.py b/src/velocity/_exceptions.py
index 472e227..1e69771 100644
--- a/src/velocity/_exceptions.py
+++ b/src/velocity/_exceptions.py
@@ -1,69 +1,78 @@
+"""Exceptions for velocity."""
+
 from sys import stderr
 
 
-class InvalidDependencySpecification(Exception):
+class CannotFindDependency(Exception):
+    """Cannot find an image dependency."""
 
-    def __init__(self, spec, image, tag, file):
-        super().__init__(f"The provided dependency '{spec}' for {image}@={tag} is invalid! Please fix {file}")
+    def __init__(self, *args) -> None:
+        super().__init__(*args)
 
 
 class NoAvailableBuild(Exception):
+    """No available build can be found."""
 
-    def __init__(self, message):
-        super().__init__(message)
+    def __init__(self, *args) -> None:
+        super().__init__(*args)
 
 
 class EdgeViolatesDAG(Exception):
+    """Edge breaks the DAG requirement of a graph."""
 
-    def __init__(self, u_of_edge, v_of_edge, cycle):
+    def __init__(self, u_of_edge, v_of_edge, cycle) -> None:
         super().__init__(f"Addition of edge {u_of_edge} -> {v_of_edge} violates graph DAG requirement!")
         for c in cycle:
-            print(f'{c[0]} -> {c[1]}', file=stderr)
+            print(f"{c[0]} -> {c[1]}", file=stderr)
 
 
 class BackendNotSupported(Exception):
+    """Container backend not supported."""
+
+    def __init__(self, *args):
+        super().__init__(*args)
 
-    def __init__(self, backend):
-        super().__init__(f"The '{backend}' is not supported!")
+
+class BackendNotAvailable(Exception):
+    """Container backend not supported."""
+
+    def __init__(self, *args):
+        super().__init__(*args)
 
 
 class UndefinedVariableInTemplate(Exception):
+    """Undefined variable during substitution in template."""
 
-    def __init__(self, variable):
-        super().__init__(f"The variable '{variable}' is undefined!")
+    def __init__(self, *args):
+        super().__init__(*args)
 
 
 class RepeatedSection(Exception):
+    """Repeated template section."""
 
-    def __init__(self, section):
-        super().__init__(f"You have more than one '{section}' section in your template!")
+    def __init__(self, *args):
+        super().__init__(*args)
 
 
 class LineOutsideOfSection(Exception):
-
-    def __init__(self):
-        super().__init__(f"You have a line outside of a section in your template!")
+    def __init__(self, *args):
+        super().__init__(*args)
 
 
 class TemplateSyntaxError(Exception):
-
     def __init__(self, message, line: str = None):
         super().__init__(f"{message} {f':line: <{line}>' if line is not None else ''}")
 
 
 class InvalidImageVersionError(Exception):
     """Invalid image version spec."""
-    def __init__(self, *args):
-        super().__init__(*args)
-
 
-class InvalidSchema(Exception):
-    """Invalid schema."""
     def __init__(self, *args):
         super().__init__(*args)
 
 
-class InvalidConfig(Exception):
-    """Invalid config."""
-    def __init__(self, *args):
+class InvalidConfigIdentifier(Exception):
+    """Invalid configuration identifier."""
+
+    def __init__(self, *args) -> None:
         super().__init__(*args)
diff --git a/src/velocity/_graph.py b/src/velocity/_graph.py
index bc513dd..d0c1022 100644
--- a/src/velocity/_graph.py
+++ b/src/velocity/_graph.py
@@ -54,7 +54,6 @@ def __init__(self, version_specifier: str) -> None:
             self.minor: int | None = int(version_dict["minor"]) if version_dict["minor"] is not None else None
             self.patch: int | None = int(version_dict["patch"]) if version_dict["patch"] is not None else None
             self.suffix: str | None = str(version_dict["suffix"]) if version_dict["suffix"] is not None else None
-            logger.trace("Version: {}".format(self.__str__()))
         except AttributeError:
             self.major: int | None = None
             self.minor: int | None = None
@@ -260,7 +259,7 @@ def apply_constraint(self, conditional: str, _type: str, spec: str) -> bool:
                 self.arguments.add(spec)
             elif _type == "template":
                 self.template = spec
-            elif self.files == "file":
+            elif _type == "file":
                 self.files.add(spec)
             elif _type == "prolog":
                 self.prolog = spec
@@ -274,7 +273,7 @@ def hash(self) -> str:
         hash_list.append(self.name)
         hash_list.append(self.version)
         hash_list.append(self.system)
-        hash_list.append(self.backend)
+        # hash_list.append(self.backend) # disable backend for now because it should not make a difference in the image
         hash_list.append(self.distro)
         hash_list.append(",".join(str(x) for x in self.dependencies))
         hash_list.append(",".join(str(x) for x in self.variables))
@@ -520,9 +519,41 @@ class ImageRepo:
     """Image repository."""
 
     def __init__(self) -> None:
+        self.images: set[Image] = set()
         # constraint(image, condition, type, spec, scope)
         self.constraints: list[tuple[str, str, str, str, str]] = list()
-        self.images: set[Image] = set()
+        if config.get("constraints") is not None:
+            # arguments
+            if "arguments" in config.get("constraints"):
+                for argument in config.get("constraints")["arguments"]:
+                    if isinstance(argument["value"], list):
+                        specs = argument["value"]
+                    else:
+                        specs = [
+                            argument["value"],
+                        ]
+                    for spec in specs:
+                        self.constraints.append(
+                            (
+                                "",
+                                argument["when"] if "when" in argument else "",
+                                "argument",
+                                spec,
+                                "global",
+                            )
+                        )
+            # variables
+            if "variables" in config.get("constraints"):
+                for variable in config.get("constraints")["variables"]:
+                    self.constraints.append(
+                        (
+                            "",
+                            variable["when"] if "when" in variable else "",
+                            "variable",
+                            "{}={}".format(variable["name"], variable["value"]),
+                            "global",
+                        )
+                    )
 
     def import_from_dir(self, path: str) -> None:
         """Add Images from path."""
@@ -532,63 +563,90 @@ def import_from_dir(self, path: str) -> None:
 
         for name in [x for x in p.iterdir() if x.is_dir() and x.name[0] != "."]:
             with open(name.joinpath("specs.yaml"), "r") as fi:
-                specs = yaml_safe_load(fi)
+                specs_file = yaml_safe_load(fi)
                 # add versions
-                for version in specs["versions"]:
-                    image = Image(
-                        name.name,
-                        version["spec"],
-                        config.get("velocity:system"),
-                        config.get("velocity:backend"),
-                        config.get("velocity:distro"),
-                        str(name),
-                    )
-                    if "when" in version:
-                        if image.satisfies(version["when"]):
-                            self.images.add(image)
+                for version in specs_file["versions"]:
+                    if isinstance(version["spec"], list):
+                        specs = version["spec"]
                     else:
-                        self.images.add(image)
-
+                        specs = [
+                            version["spec"],
+                        ]
+                    for spec in specs:
+                        image = Image(
+                            name.name,
+                            spec,
+                            config.get("velocity:system"),
+                            config.get("velocity:backend"),
+                            config.get("velocity:distro"),
+                            str(name),
+                        )
+                        if "when" in version:
+                            if image.satisfies(version["when"]):
+                                self.images.add(image)
+                        else:
+                            self.images.add(image)
                 # add constraints
                 # dependencies
-                if "dependencies" in specs:
-                    for dependency in specs["dependencies"]:
-                        self.constraints.append(
-                            (
-                                name.name,
-                                dependency["when"] if "when" in dependency else "",
-                                "dependency",
+                if "dependencies" in specs_file:
+                    for dependency in specs_file["dependencies"]:
+                        if isinstance(dependency["spec"], list):
+                            specs = dependency["spec"]
+                        else:
+                            specs = [
                                 dependency["spec"],
-                                dependency["scope"] if "scope" in dependency else "image",
+                            ]
+                        for spec in specs:
+                            self.constraints.append(
+                                (
+                                    name.name,
+                                    dependency["when"] if "when" in dependency else "",
+                                    "dependency",
+                                    spec,
+                                    dependency["scope"] if "scope" in dependency else "image",
+                                )
                             )
-                        )
                 # templates
-                if "templates" in specs:
-                    for template in specs["templates"]:
-                        self.constraints.append(
-                            (
-                                name.name,
-                                template["when"] if "when" in template else "",
-                                "template",
-                                template["path"],
-                                template["scope"] if "scope" in template else "image",
+                if "templates" in specs_file:
+                    for template in specs_file["templates"]:
+                        if isinstance(template["name"], list):
+                            specs = template["name"]
+                        else:
+                            specs = [
+                                template["name"],
+                            ]
+                        for spec in specs:
+                            self.constraints.append(
+                                (
+                                    name.name,
+                                    template["when"] if "when" in template else "",
+                                    "template",
+                                    spec,
+                                    template["scope"] if "scope" in template else "image",
+                                )
                             )
-                        )
                 # arguments
-                if "arguments" in specs:
-                    for argument in specs["arguments"]:
-                        self.constraints.append(
-                            (
-                                name.name,
-                                argument["when"] if "when" in argument else "",
-                                "argument",
+                if "arguments" in specs_file:
+                    for argument in specs_file["arguments"]:
+                        if isinstance(argument["value"], list):
+                            specs = argument["value"]
+                        else:
+                            specs = [
                                 argument["value"],
-                                argument["scope"] if "scope" in argument else "image",
+                            ]
+                        for spec in specs:
+                            self.constraints.append(
+                                (
+                                    name.name,
+                                    argument["when"] if "when" in argument else "",
+                                    "argument",
+                                    spec,
+                                    argument["scope"] if "scope" in argument else "image",
+                                )
                             )
-                        )
                 # variables
-                if "variables" in specs:
-                    for variable in specs["variables"]:
+                if "variables" in specs_file:
+                    for variable in specs_file["variables"]:
                         self.constraints.append(
                             (
                                 name.name,
@@ -599,20 +657,27 @@ def import_from_dir(self, path: str) -> None:
                             )
                         )
                 # files
-                if "files" in specs:
-                    for file in specs["files"]:
-                        self.constraints.append(
-                            (
-                                name.name,
-                                file["when"] if "when" in file else "",
-                                "file",
+                if "files" in specs_file:
+                    for file in specs_file["files"]:
+                        if isinstance(file["name"], list):
+                            specs = file["name"]
+                        else:
+                            specs = [
                                 file["name"],
-                                file["scope"] if "scope" in file else "image",
+                            ]
+                        for spec in specs:
+                            self.constraints.append(
+                                (
+                                    name.name,
+                                    file["when"] if "when" in file else "",
+                                    "file",
+                                    spec,
+                                    file["scope"] if "scope" in file else "image",
+                                )
                             )
-                        )
                 # prologs
-                if "prologs" in specs:
-                    for prolog in specs["prologs"]:
+                if "prologs" in specs_file:
+                    for prolog in specs_file["prologs"]:
                         self.constraints.append(
                             (
                                 name.name,
@@ -623,12 +688,11 @@ def import_from_dir(self, path: str) -> None:
                             )
                         )
 
-    def create_build_recipe(self, targets: list[str]) -> tuple:
+    def create_build_recipe(self, targets: list[str]) -> tuple[tuple, ImageGraph]:
         """Create an ordered build recipe of images."""
         images: set[Image] = deepcopy(self.images)
 
         build_targets: list[Target] = list()
-        targs: list[Image] = list()
         for target in targets:
             res = re_fullmatch(
                 r"^(?P<name>[a-zA-Z0-9-]+)(?:(?:@(?P<left>[\d\.]+)(?!@))?(?:@?(?P<colen>:)(?P<right>[\d\.]+)?)?)?$",
@@ -646,7 +710,6 @@ def create_build_recipe(self, targets: list[str]) -> tuple:
                         config.get("velocity:distro"),
                         "",
                     )
-                    targs.append(t)
                     if gd["colen"] is not None:
                         build_targets.append(Target(t, DepOp.GE))
                     else:
@@ -663,7 +726,6 @@ def create_build_recipe(self, targets: list[str]) -> tuple:
                             "",
                         )
                         build_targets.append(Target(t, DepOp.LE))
-                        targs.append(t)
                     else:
                         raise InvalidImageVersionError("Invalid version '{}'.".format(target))
                 # n
@@ -680,7 +742,6 @@ def create_build_recipe(self, targets: list[str]) -> tuple:
                             "",
                         )
                         build_targets.append(Target(t, DepOp.UN))
-                        targs.append(t)
                 # n@v:v
                 else:
                     t = Image(
@@ -692,7 +753,6 @@ def create_build_recipe(self, targets: list[str]) -> tuple:
                         "",
                     )
                     build_targets.append(Target(t, DepOp.GE))
-                    targs.append(t)
                     t = Image(
                         gd["name"],
                         gd["right"],
@@ -702,22 +762,38 @@ def create_build_recipe(self, targets: list[str]) -> tuple:
                         "",
                     )
                     build_targets.append(Target(t, DepOp.LE))
-                    targs.append(t)
             else:
                 raise NoAvailableBuild("No available build!")
 
-        # apply constraints
+        # pre-burner graph
+        for constraint in self.constraints:
+            pass
+            for image in images:
+                if image.apply_constraint("{} {}".format(constraint[0], constraint[1]), constraint[2], constraint[3]):
+                    images_changed = True
+        ig = ImageGraph()
+        for image in images:
+            ig.add_node(image)
+        for image in images:
+            for dep in image.dependencies:
+                for di in images:
+                    if di.satisfies(dep):
+                        ig.add_edge(image, di)
+
+        bt: tuple[Image] = ig.create_build_recipe(build_targets)
+
+        # apply constraints for the build scope
         images_changed: bool = True
         while images_changed:
             images_changed = False
             for constraint in self.constraints:
                 if constraint[4] == "build":
-                    for targ in targs:
+                    for targ in bt:
                         if targ.satisfies(constraint[1]):
                             for image in images:
                                 if image.apply_constraint(constraint[0], constraint[2], constraint[3]):
                                     images_changed = True
-                # default is constraint[4] == "image"
+                # "image" or "universal"
                 else:
                     for image in images:
                         if image.apply_constraint(
@@ -743,4 +819,13 @@ def create_build_recipe(self, targets: list[str]) -> tuple:
             b.underlay = cumulative_deps
             cumulative_deps = cumulative_deps + int(b.id, 16)
 
-        return bt
+        bt_ig = ImageGraph()
+        for image in bt:
+            bt_ig.add_node(image)
+        for image in bt:
+            for dep in image.dependencies:
+                for di in bt:
+                    if di.satisfies(dep):
+                        bt_ig.add_edge(image, di)
+
+        return bt, bt_ig

From 573a7d089ef59e31742bf4b74d49397ba8e4bdf3 Mon Sep 17 00:00:00 2001
From: Asa Rentschler <rentschleraj@ornl.gov>
Date: Mon, 16 Sep 2024 11:27:04 -0400
Subject: [PATCH 06/10] Added more variables for different parts of the version

---
 src/velocity/__main__.py | 8 +++++++-
 src/velocity/_build.py   | 8 ++++++++
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/src/velocity/__main__.py b/src/velocity/__main__.py
index 0c82b96..39e1625 100644
--- a/src/velocity/__main__.py
+++ b/src/velocity/__main__.py
@@ -44,6 +44,7 @@
     "-l", "--leave-tags", action="store_true", help="do not clean up intermediate build tags (only applies to podman)"
 )
 build_parser.add_argument("-v", "--verbose", action="store_true", help="print helpful debug/runtime information")
+build_parser.add_argument("-c", "--clean", action="store_true", help="run clean build (delete cached builds)")
 
 # create avail_parser
 avail_parser = sub_parsers.add_parser("avail", help="lookup available images")
@@ -99,7 +100,12 @@
 
     # prep builder
     builder = ImageBuilder(
-        recipe, build_name=args.name, dry_run=args.dry_run, remove_tags=not args.leave_tags, verbose=args.verbose
+        recipe,
+        build_name=args.name,
+        dry_run=args.dry_run,
+        remove_tags=not args.leave_tags,
+        verbose=args.verbose,
+        clean_build_dir=args.clean
     )
 
     # build
diff --git a/src/velocity/_build.py b/src/velocity/_build.py
index 27d7c41..95fd944 100644
--- a/src/velocity/_build.py
+++ b/src/velocity/_build.py
@@ -101,6 +101,10 @@ def __init__(
         self.variables: dict[str, str] = dict()
         for i in self.build_units:
             self.variables["__{}__version__".format(i.name)] = i.version.__str__()
+            self.variables["__{}__version_major__".format(i.name)] = i.version.major.__str__()
+            self.variables["__{}__version_minor__".format(i.name)] = i.version.minor.__str__()
+            self.variables["__{}__version_patch__".format(i.name)] = i.version.patch.__str__()
+            self.variables["__{}__version_suffix__".format(i.name)] = i.version.suffix.__str__()
 
     def build(self) -> None:
         """Launch image builds."""
@@ -203,6 +207,10 @@ def _build_image(self, unit: Image, src_image: str, name: str):
         script_variables = unit.variables.copy()
         script_variables.update({"__name__": unit.name})
         script_variables.update({"__version__": str(unit.version)})
+        script_variables.update({"__version_major__": str(unit.version.major)})
+        script_variables.update({"__version_minor__": str(unit.version.minor)})
+        script_variables.update({"__version_patch__": str(unit.version.patch)})
+        script_variables.update({"__version_suffix__": str(unit.version.suffix)})
         script_variables.update({"__timestamp__": str(datetime.datetime.now())})
         script_variables.update(
             {"__threads__": str(int(os.cpu_count() * 0.75) if int(os.cpu_count() * 0.75) < 16 else 16)}

From 8b66771e71b306a0299a11b1128bcebfbf05b92b Mon Sep 17 00:00:00 2001
From: Asa Rentschler <xjv@ornl.gov>
Date: Mon, 16 Sep 2024 16:14:54 -0400
Subject: [PATCH 07/10] Various bug fixes

---
 pyproject.toml           | 6 +++---
 src/velocity/__main__.py | 7 +++----
 src/velocity/_graph.py   | 2 +-
 3 files changed, 7 insertions(+), 8 deletions(-)

diff --git a/pyproject.toml b/pyproject.toml
index 4727370..89903c5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -3,7 +3,7 @@ requires = [ "setuptools>=61.0" ]
 build-backend = "setuptools.build_meta"
 
 [project]
-name = "velocity"
+name = "olcf-velocity"
 version = "0.1.0-rc1"
 authors = [
     { name="Asa"}
@@ -14,8 +14,8 @@ dependencies = [
     "pyyaml",
     "networkx",
     "colorama",
-    "editor",
-    "loguru"
+    "loguru",
+    "typing_extensions"
 ]
 
 [project.urls]
diff --git a/src/velocity/__main__.py b/src/velocity/__main__.py
index 39e1625..6f27cae 100644
--- a/src/velocity/__main__.py
+++ b/src/velocity/__main__.py
@@ -2,11 +2,10 @@
 
 import argparse
 import sys
-from docutils.parsers.rst.directives.images import Image
 from loguru import logger
 from importlib.metadata import version
 from colorama import Fore, Style
-from ._graph import ImageRepo
+from ._graph import ImageRepo, Image
 from ._build import ImageBuilder
 from ._print import header_print, indent_print, TextBlock, bare_print
 from ._config import config
@@ -95,7 +94,7 @@
     # print build specs
     header_print([TextBlock("Build Order:")])
     for r in recipe:
-        indent_print([TextBlock(f"{r.name}@{r.version}", fore=Fore.MAGENTA, style=Style.BRIGHT)])
+        indent_print([TextBlock(f"{r.name}@{r.version}-{r.id}", fore=Fore.MAGENTA, style=Style.BRIGHT)])
     print()  # newline
 
     # prep builder
@@ -157,7 +156,7 @@ def spec_print(seed: str, indent: int, fdt: dict, rs: tuple[Image]):
         spec = ""
         for _ in rs:
             if _.satisfies(seed):
-                spec = "{}@{}".format(_.name, _.version)
+                spec = "{}@{}-{}".format(_.name, _.version, _.id)
         print("  " + "   " * indent, end="")
         if indent == 0:
             bare_print(
diff --git a/src/velocity/_graph.py b/src/velocity/_graph.py
index d0c1022..b5fd85f 100644
--- a/src/velocity/_graph.py
+++ b/src/velocity/_graph.py
@@ -278,7 +278,7 @@ def hash(self) -> str:
         hash_list.append(",".join(str(x) for x in self.dependencies))
         hash_list.append(",".join(str(x) for x in self.variables))
         hash_list.append(",".join(str(x) for x in self.arguments))
-        tf = Path(self.path).joinpath("templates", self.template)
+        tf = Path(self.path).joinpath("templates", "{}.vtmp".format(self.template))
         if tf.is_file():
             hash_list.append(sha256(tf.read_bytes()).hexdigest())
         else:

From ceb1d8458930bd5c94fcb8eab693fa31b90ca1f8 Mon Sep 17 00:00:00 2001
From: Asa <59259908+AcerP-py@users.noreply.github.com>
Date: Wed, 18 Sep 2024 10:42:16 -0400
Subject: [PATCH 08/10] Create python-publish.yml

---
 .github/workflows/python-publish.yml | 39 ++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100644 .github/workflows/python-publish.yml

diff --git a/.github/workflows/python-publish.yml b/.github/workflows/python-publish.yml
new file mode 100644
index 0000000..b7a704b
--- /dev/null
+++ b/.github/workflows/python-publish.yml
@@ -0,0 +1,39 @@
+# This workflow will upload a Python Package using Twine when a release is created
+# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-python#publishing-to-package-registries
+
+# This workflow uses actions that are not certified by GitHub.
+# They are provided by a third-party and are governed by
+# separate terms of service, privacy policy, and support
+# documentation.
+
+name: Upload Python Package
+
+on:
+  release:
+    types: [published]
+
+permissions:
+  contents: read
+
+jobs:
+  deploy:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+    - name: Set up Python
+      uses: actions/setup-python@v3
+      with:
+        python-version: '3.x'
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install build
+    - name: Build package
+      run: python -m build
+    - name: Publish package
+      uses: pypa/gh-action-pypi-publish@27b31702a0e7fc50959f5ad993c78deac1bdfc29
+      with:
+        user: __token__
+        password: ${{ secrets.PYPI_API_TOKEN }}

From b52eb80bba3d3c83826eb9b8375492afe0746822 Mon Sep 17 00:00:00 2001
From: Asa Rentschler <rentschleraj@ornl.gov>
Date: Wed, 18 Sep 2024 14:49:08 -0400
Subject: [PATCH 09/10] Commit updated docs

---
 docs/build/doctrees/environment.pickle        |  Bin 37024 -> 39605 bytes
 docs/build/doctrees/index.doctree             |  Bin 3566 -> 3991 bytes
 docs/build/doctrees/reference/build.doctree   |  Bin 9122 -> 8700 bytes
 docs/build/doctrees/reference/config.doctree  |  Bin 0 -> 11050 bytes
 docs/build/doctrees/reference/index.doctree   |  Bin 2855 -> 2885 bytes
 .../doctrees/reference/specifications.doctree |  Bin 17579 -> 0 bytes
 docs/build/doctrees/reference/specs.doctree   |  Bin 0 -> 15033 bytes
 docs/build/doctrees/reference/vtmp.doctree    |  Bin 19027 -> 21133 bytes
 docs/build/doctrees/starting/basic.doctree    |  Bin 24659 -> 17083 bytes
 docs/build/doctrees/starting/index.doctree    |  Bin 2827 -> 2842 bytes
 docs/build/doctrees/starting/tutorial.doctree |  Bin 120466 -> 60169 bytes
 docs/build/html/_sources/index.rst.txt        |    6 +-
 .../html/_sources/reference/build.rst.txt     |   24 +-
 .../html/_sources/reference/config.rst.txt    |   64 +
 .../html/_sources/reference/index.rst.txt     |    3 +-
 .../_sources/reference/specifications.rst.txt |  160 ---
 .../html/_sources/reference/specs.rst.txt     |  114 ++
 .../html/_sources/reference/vtmp.rst.txt      |   97 +-
 .../html/_sources/starting/basic.rst.txt      |  204 +--
 .../html/_sources/starting/tutorial.rst.txt   | 1241 ++++++-----------
 docs/build/html/index.html                    |   13 +-
 docs/build/html/objects.inv                   |  Bin 462 -> 493 bytes
 docs/build/html/reference/build.html          |   30 +-
 docs/build/html/reference/config.html         |  191 +++
 docs/build/html/reference/index.html          |   23 +-
 docs/build/html/reference/specifications.html |  278 ----
 docs/build/html/reference/specs.html          |  234 ++++
 docs/build/html/reference/vtmp.html           |  114 +-
 docs/build/html/searchindex.js                |    2 +-
 docs/build/html/starting/basic.html           |  207 +--
 docs/build/html/starting/index.html           |    7 +-
 docs/build/html/starting/tutorial.html        | 1229 ++++++----------
 docs/source/_static/icon.png                  |    2 +-
 docs/source/index.rst                         |    6 +-
 docs/source/reference/build.rst               |   24 +-
 docs/source/reference/config.rst              |   64 +
 docs/source/reference/index.rst               |    3 +-
 docs/source/reference/specifications.rst      |  160 ---
 docs/source/reference/specs.rst               |  114 ++
 docs/source/reference/vtmp.rst                |   97 +-
 docs/source/starting/basic.rst                |  204 +--
 docs/source/starting/tutorial.rst             | 1241 ++++++-----------
 src/velocity/__main__.py                      |    2 +-
 43 files changed, 2459 insertions(+), 3699 deletions(-)
 create mode 100644 docs/build/doctrees/reference/config.doctree
 delete mode 100644 docs/build/doctrees/reference/specifications.doctree
 create mode 100644 docs/build/doctrees/reference/specs.doctree
 create mode 100644 docs/build/html/_sources/reference/config.rst.txt
 delete mode 100644 docs/build/html/_sources/reference/specifications.rst.txt
 create mode 100644 docs/build/html/_sources/reference/specs.rst.txt
 create mode 100644 docs/build/html/reference/config.html
 delete mode 100644 docs/build/html/reference/specifications.html
 create mode 100644 docs/build/html/reference/specs.html
 create mode 100644 docs/source/reference/config.rst
 delete mode 100644 docs/source/reference/specifications.rst
 create mode 100644 docs/source/reference/specs.rst

diff --git a/docs/build/doctrees/environment.pickle b/docs/build/doctrees/environment.pickle
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diff --git a/docs/build/doctrees/index.doctree b/docs/build/doctrees/index.doctree
index 208a8f3f89c04ab0d89496b1b5110db515fbab7d..58d112fe40e9f6be1ca5424cb4582504489699b9 100644
GIT binary patch
delta 743
zcmb_aL2DC16n4AWrl~C&3zenSKB=vVl=k4slXx|?tzdc!ak4wf+je(m*_o{kRH}%O
zz(O!HA|Ct^k{{56SAT;4KoG&3C&$F4AP62jym|1wZ{B+|-}iOt?TYi<d6QlG;B48}
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delta 370
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diff --git a/docs/build/doctrees/reference/build.doctree b/docs/build/doctrees/reference/build.doctree
index 7c8927e9290ee495776db80e4ae99531e0373cf1..0aef23801ca53c7d95dadee4880646ac81d2ace0 100644
GIT binary patch
delta 1701
zcmdT^ZD?Cn7~V;9+oVmKkLGL5M{knNc5M>db(VI_*)ep?K@f4H2%|}p8_$imx$)i`
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delta 2104
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z9J{w@Ixm`zi>A|Jk~Q&dCQCW8^dieyb`9UV^=!@LVVfBeK0zi4mg|D&ck&dRYrIMf
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diff --git a/docs/build/doctrees/reference/config.doctree b/docs/build/doctrees/reference/config.doctree
new file mode 100644
index 0000000000000000000000000000000000000000..389f0c7ce03e9f4855360d30cccad727154ee2d0
GIT binary patch
literal 11050
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diff --git a/docs/build/doctrees/reference/specifications.doctree b/docs/build/doctrees/reference/specifications.doctree
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diff --git a/docs/build/doctrees/starting/basic.doctree b/docs/build/doctrees/starting/basic.doctree
index b82e0fb3f63216b19ebf83fe8f76281956b66d70..038f7d513e5c01c4f5ad487ec37fdf228dd2540c 100644
GIT binary patch
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diff --git a/docs/build/doctrees/starting/index.doctree b/docs/build/doctrees/starting/index.doctree
index 8123b84d9d08416d32613123a383131a7fc12912..4e355b75b5f6d18edf32d864c523842ee4a1b7ee 100644
GIT binary patch
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diff --git a/docs/build/doctrees/starting/tutorial.doctree b/docs/build/doctrees/starting/tutorial.doctree
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diff --git a/docs/build/html/_sources/index.rst.txt b/docs/build/html/_sources/index.rst.txt
index e81dc9e..fcb521a 100644
--- a/docs/build/html/_sources/index.rst.txt
+++ b/docs/build/html/_sources/index.rst.txt
@@ -4,8 +4,10 @@
    contain the root `toctree` directive.
 
 
-Velocity Container Build System
-===============================
+Velocity Container Build Management
+===================================
+Velocity is a tool to help with the maintenance of container build scripts on multiple systems, backends
+(e.g podman or apptainer) and distros.
 
 .. toctree::
    :maxdepth: 2
diff --git a/docs/build/html/_sources/reference/build.rst.txt b/docs/build/html/_sources/reference/build.rst.txt
index 4d4d7f1..6003d21 100644
--- a/docs/build/html/_sources/reference/build.rst.txt
+++ b/docs/build/html/_sources/reference/build.rst.txt
@@ -6,16 +6,14 @@ This page describes the steps that velocity goes through when building an image.
 
 Setup
 #####
-After selecting images to build and ordering them. Velocity will start by assigning a random
-id to each image to be built. It will also create a directory BSD (Build Sub Dir) named with that random id in
-`VELOCITY_BUILD_DIR`.
+After selecting images to build and ordering them Velocity will also create a directory BSD (Build Sub Dir)
+named ``<name>-<version>-<hash>`` in build directory.
 
 .. _files:
 
 Files
 #####
-Next Velocity will look for a folder in the image definition directory with the same name as `VELOCITY_SYSTEM`. All
-of the files in this directory will be copied to the BSD.
+Next Velocity will copy any files that you specified.
 
 Parse Template
 ##############
@@ -32,18 +30,20 @@ Finally velocity will run the `build` script and log the output to a file called
 
 Build Directory Layout
 ######################
-At the end of a build `VELOCITY_BUILD_DIR` should look somthing like this. With the addition of any other files that
+At the end of a build the build dir should look somthing like this. With the addition of any other files that
 got copied in the :ref:`files<files>` step.
 
 .. code-block:: bash
 
     .
-    ├── jknqsnkc
-    │   ├── build
-    │   ├── log
-    │   └── script
-    └── nfhmhmsh
+    ├── fedora-41-8a9a360
+    │ ├── 8a9a360.sif
+    │ ├── build
+    │ ├── log
+    │ └── script
+    └── hello-world-1.0-de9c02b
         ├── build
+        ├── de9c02b.sif
+        ├── hello_world.py
         ├── log
         └── script
-
diff --git a/docs/build/html/_sources/reference/config.rst.txt b/docs/build/html/_sources/reference/config.rst.txt
new file mode 100644
index 0000000..50a83c3
--- /dev/null
+++ b/docs/build/html/_sources/reference/config.rst.txt
@@ -0,0 +1,64 @@
+*************
+Configuration
+*************
+
+Configuration for Velocity comes from three places. Command line options, environment variables and the configuration file.
+
+Commandline Options
+###################
+These take the highest level of precedence and can be viewed by using the ``--help`` option in the command line.
+
+Variables
+#########
+Variables are the second highest level of configuration.
+
+`VELOCITY_IMAGE_PATH`
+---------------------
+
+This variable points to the directories containing the the image definitions.
+
+`VELOCITY_SYSTEM`
+-----------------
+This variable specifies what computer system you are building for (e.g. frontier).
+
+`VELOCITY_BACKEND`
+------------------
+This variable specifies the container backend that should be used (e.g podman).
+
+`VELOCITY_DISTRO`
+-----------------
+This variable specifies the distro of the container images that will be built. This name is flexable and completely
+up to the user. It is used purely for organizational purposes.
+
+`VELOCITY_BUILD_DIR`
+--------------------
+This variable specifies a scratch space for Velocity to preform builds in.
+
+`VELOCITY_CONFIG_DIR`
+---------------------
+This variable specifies where to look for the configuration file.
+
+Configuration File
+##################
+The configuration file is the lowest level of configuration. By default Velocity looks for ``config.yaml`` in
+``~/.velocity`` unless ``VELOCITY_CONFIG_DIR`` is set. A number of configuration option for velocity can be set.
+
+.. code-block:: yaml
+
+    velocity:
+      system: frontier
+      backend: apptainer
+      distro: ubuntu
+      debug: INFO   # set the debug level
+      image_path:   # a list of : seperated paths
+      build_dir:    # path to a scratch space
+
+Additionally you can set :ref:`arguments` and :ref:`specVariables` at a global level in the constraints section. As an example here
+we are adding ``--disable-cache`` as an argument for every image build we do with apptainer.
+
+.. code-block:: yaml
+
+    constraints:
+      arguments:
+        - value: --disable-cache
+          when: backend=apptainer
diff --git a/docs/build/html/_sources/reference/index.rst.txt b/docs/build/html/_sources/reference/index.rst.txt
index f386b53..0c01598 100644
--- a/docs/build/html/_sources/reference/index.rst.txt
+++ b/docs/build/html/_sources/reference/index.rst.txt
@@ -8,6 +8,7 @@ Technical Docs
 .. toctree::
    :maxdepth: 2
 
+   config
    vtmp
-   specifications
+   specs
    build
diff --git a/docs/build/html/_sources/reference/specifications.rst.txt b/docs/build/html/_sources/reference/specifications.rst.txt
deleted file mode 100644
index b02e926..0000000
--- a/docs/build/html/_sources/reference/specifications.rst.txt
+++ /dev/null
@@ -1,160 +0,0 @@
-*******************
-Specifications.yaml
-*******************
-
-Basic Layout
-############
-The `specifications.yaml` file defines image availability, dependencies and a number of other available
-options for an image. Velocity doesn't care about any extraneous data you may have in it. All that Velocity looks
-for is a base level section called `build_specifications`. Any other sections that you may add for your own purposes
-are ignored by Velocity. Under `build_specifications` there should be a tree defining under what conditions the image
-can be built in the order `system` > `backend` > `distro`. For example if I am creating an `centos` based image for use on
-frontier which only has Apptainer on it then I should have the following structure in my `specifications.yaml` file.
-
-.. code-block:: yaml
-
-    build_specifications:
-      frontier:
-        apptainer:
-          ubuntu:
-            # config options
-
-If I wanted it to be available on summit as well which has Apptainer and Podman I would add the following.
-
-.. code-block:: yaml
-
-    build_specifications:
-      frontier:
-        apptainer:
-          centos:
-            # config options
-      summit:
-        apptainer:
-          centos:
-            # config options
-        podman:
-          centos:
-            # config options
-
-While `system` and `backend` are fairly self explanatory the `distro` is a little more obscure. Velocity does not do
-any checks to make sure that the image being built is actually of the right distro. All that the distro tells Velocity to do is
-look in the `templates` folder of an image for a template called `<distro>.vtmp` (e.g. centos.vtmp). If a template with
-the right name cannot be found Velocity will error.
-
-.. code-block:: bash
-    :caption: image structure
-
-    .
-    └── <image name>
-        └── <image version>
-            ├── specifications.yaml
-            └── templates
-                └── <distro>.vtmp
-
-
-Config Options
-##############
-Under each `system` > `backend` > `distro` section there are a variaty of config options available.
-
-dependencies
-------------
-The `dependencies` section is a list of images that must be built before the current one can be.
-
-.. code-block:: yaml
-
-    build_specifications:
-      frontier:
-        apptainer:
-          ubuntu:
-            dependencies:
-              - dep_one
-              - dep_two
-                # ...
-
-Some times you may want a specific version of a dependency in which case Velocity provides several ways to specify dependency
-relationships. Versions are compared by splitting the version string up based on periods and then comparing the sections
-left to right alphanumerically.
-
-.. code-block:: yaml
-
-    build_specifications:
-      frontier:
-        apptainer:
-          ubuntu:
-            dependencies:
-              - dep_one@=11.5       # equal to 11.5
-              - dep_two@_11.5       # less than or equal to 11.5
-              - dep_three@^11.5     # greater than or equal to 11.5
-              - dep_four@11.2%11.8  # inbetween 11.2 and 11.8 (inclusive)
-                # ...
-
-prolog
-------
-There are certain occasions when some commands need to be run on the host machine before an image is built. These
-commands can be placed in a bash script in a directory which matches the system name. All that you need to do in the
-`specifications.yaml` file is put the script name.
-
-.. code-block:: yaml
-
-    build_specifications:
-      frontier:
-        apptainer:
-          ubuntu:
-            dependencies:
-              - dep_one
-              - dep_two
-                # ...
-            prolog: example_prolog.sh
-
-.. code-block:: bash
-    :caption: VELOCITY_IMAGE_DIR
-
-    .
-    ├── <image name>
-        └── <image version>
-            ├── <system>
-            │    └── example_prolog.sh
-            ├── specifications.yaml
-            └── templates
-                └── <distro>.vtmp
-
-arguments
----------
-Any arguments specified here will be added to the build command.
-
-.. code-block:: yaml
-
-    build_specifications:
-      frontier:
-        apptainer:
-          ubuntu:
-            dependencies:
-              - dep_one
-              - dep_two
-                # ...
-            prolog: example_prolog.sh
-            arguments:
-              - '--build-arg EXAMPLE=8046'
-
-This will result in `apptainer build --build-arg EXAMPLE=8046 ...` when the image is built.
-
-variables
----------
-Here you can define :ref:`variables<variables>` for the VTMP file to use when it is parsed.
-
-.. code-block:: yaml
-
-    build_specifications:
-      frontier:
-        apptainer:
-          ubuntu:
-            dependencies:
-              - dep_one
-              - dep_two
-                # ...
-            prolog: example_prolog.sh
-            arguments:
-              - '--build-arg EXAMPLE=8046'
-            variables:
-              - arch: x86_64
-              - url: 'https://example.com'
diff --git a/docs/build/html/_sources/reference/specs.rst.txt b/docs/build/html/_sources/reference/specs.rst.txt
new file mode 100644
index 0000000..d3667f4
--- /dev/null
+++ b/docs/build/html/_sources/reference/specs.rst.txt
@@ -0,0 +1,114 @@
+*******************
+Specs.yaml
+*******************
+
+About
+#####
+The `specs.yaml` file defines image availability, dependencies and a number of other available
+options for an image.
+
+Config Options
+##############
+
+versions
+--------
+The `versions` section defines a list of versions and their availability.
+
+.. code-block:: yaml
+
+    versions:
+      - spec: 45
+        when: distro=ubuntu
+      - spec:
+          - 46
+          - 47
+        when: backend=podman
+
+dependencies
+------------
+The `dependencies` section is used to specify prerequist images.
+
+.. code-block:: yaml
+
+    dependencies:
+      - spec: ubuntu
+        when: distro=ubuntu
+      - spec:
+          - "gcc@12:"
+          - pytorch
+        when: myapp@:2.3
+
+templates
+---------
+By default velocity looks for a template called ``default.vtmp``, but using the `templates` section you can specify an
+alternate template.
+
+.. code-block:: yaml
+
+    templates:
+      - name: second_tmp
+        when: "myapp@2:"
+
+.. _arguments:
+
+arguments
+---------
+Use the `argument` section to add build time arguments to an image.
+
+.. code-block:: yaml
+
+    arguments:
+      - value: --disable-cache
+        when: backend=apptainer
+
+.. _specVariables:
+
+variables
+---------
+Use the `variables` section to set template variables.
+
+.. code-block:: yaml
+
+    variables:
+      - name: test_var
+        value: "Test value."
+
+files
+-----
+Use the `files` section to specify files or directories in the `files` folder that you want copied to the build directory.
+
+.. code-block:: yaml
+
+    files:
+      - name: config.json
+
+prologs
+-------
+Use the `prologs` section to bash commands that you want to run before the build.
+
+.. code-block:: yaml
+
+    prologs:
+      - script: |
+          git clone ...
+        when: system=summit
+
+Using ``when``
+##############
+A few notes about using ``when`` to filter config options. The ``when`` option can be used to filter configs as shown
+above by system, backend, distro and dependencies. The only exception to this is the `versions` section which cannot
+be filtered by dependencies. List each item that you want to filter by separated by a space e.g. ``gcc@12.3 system=frontier``.
+Additionally you can specify the scope of a ``when`` by specifying the ``scope``. The default scope is ``image`` which means
+that the when statement is evaluated on the current image. So say you want to apply a config in the gcc `specs.yaml` file
+to every gcc version greater than 10.3.0, you would use ``when: ^ubuntu:``. Alternatively you can set the scope to ``build``
+when you want the when statement evaluated on the current build.
+
+.. code-block:: yaml
+
+    variable:
+      - name: TEST
+        value: "1 2 3 4"
+        when: ubuntu
+        scope: build
+
+This can be read as "If the ubuntu image is in the current set of images to be built then add the TEST variable."
diff --git a/docs/build/html/_sources/reference/vtmp.rst.txt b/docs/build/html/_sources/reference/vtmp.rst.txt
index fe621ed..2c05c5a 100644
--- a/docs/build/html/_sources/reference/vtmp.rst.txt
+++ b/docs/build/html/_sources/reference/vtmp.rst.txt
@@ -3,76 +3,94 @@ VTMP Format
 ***********
 
 VTMP files are used by Velocity to generate the appropriate script for a particular backend.
-While certain features are supported across all backends, others are exclusive to one backend and many are interpreted
-quite differently between the different backends. The goal of the VTMP files are to provide a unified API for
+The goal of the VTMP files are to provide a unified API for
 container images across multiple backends but they are not feature exhaustive.
 VTMP files are split up into a number of sections.
 
 .. code-block:: text
     :caption: Example VTMP
 
+    >>> this is a comment
     @from
-        # can only take one of these
+        >>> can only take one of these examples
         docker.io/ubuntu:20.04
-        /example.sif # only works for apptainer backend
-        %(__base__)
+        /example.sif    >>> only works for apptainer backend
+        {{ __base__ }}  >>> build on the previous image
 
-    @pre # same as post but placed right after @from
-        # anything here is taken literally
-        # denote the start of a line with |
-        |echo 'Without tab'
+    @pre
+        >>> anything here is taken literally
+        >>> optionally denote the start of a line with | (helpful for white space)
+        echo 'Without tab'
         |    echo 'With tab'
 
-    @arg
-        # define arg names
-        example_arg # reference this argument throughout the script with @(<arg>)
-
     @copy
-        # list files to copy, format <src> <dest>
+        >>> list files to copy, format <src> <dest>
         /external/file /internal/file
 
     @run
-        # list of commands to run in container
+        >>> list of commands to run in container
         echo 'Hello world'
-        ?podman echo 'podman'
-        ?apptainer echo 'apptainer'
-        echo %(template_variable)
-        echo @(example_arg) # see @arg
+        ?? distro=podman |> echo 'podman' ??    >>> conditional
+        ?? distro=apptainer |> echo 'apptainer' ??
+        echo {{ template_variable }}
+        echo @@ example_arg @@  >>> define an argument
+        !envar TEST_VAR I want this here and in the @env section    >>> the !envar directive
 
     @env
-        # set env variables
+        >>> set env variables
         PATH /something:$PATH
 
     @label
-        # set container labels
-        velocity.image.%(__name__)__%(__tag__) %(__hash__)
-
+        >>> set container labels
+        IMAGE_NAME {{ __name__ }}
 
     @entry
-        # set entrypoint or %runscript
-        # only one line allowed
+        >>> set  ENTRYPOINT or %runscript
+        >>> only one line allowed
+
         /bin/bash
 
-    @post # same as pre but placed after everything else
+    @post >>> same as pre but placed after everything else
 
 .. _variables:
 
 Variables
 #########
 The first thing that is done to a VTMP file is the substitution of any variables found in the script. Variables are indicated
-by `%(<variable>)`. In Velocity variables can be defined by the user in the `specifications.yaml` file, but Velocity also
+by ``{{ <variable> }}``. In Velocity variables can be defined by the user in the `specs.yaml` file, but Velocity also
 provides a set of build time variables.
 
 .. code-block:: text
 
     __backend__
     __distro__
-    __hash__        # template hash
-    __base__        # previous image to build on
-    __name__        # current image name e.g. cuda
+    __base__        >>> previous image to build on
+    __name__        >>> current image name e.g. cuda
     __system__
-    __tag__         # image "version" e.g. 11.7.1
+    __version__     >>> image "version" e.g. 11.7.1
+    __version_major__
+    __version_minor__
+    __version_patch__
+    __version_suffix__
     __timestamp__
+    >>> the versions of all images in a build are also available in the following format
+    __<name>__version__
+    __<name>__version_major__
+    __<name>__version_minor__
+    __<name>__version_patch__
+    __<name>__version_suffix__
+
+Arguments
+#########
+You can also pass in arguments at build time using the form ``@@ <name> @@``, but don't forget to add the
+argument in ``specs.yaml`` so that is gets added to the build command or the build will fail.
+
+Conditionals
+############
+If there is a line in a template that you only want under certain conditions use ``?? <condition> |> <text> ??``.
+The whole conditional will be replaced with the <text> section if the condition is true; otherwise, it will substitute
+an empty string. The conditionals can include the following components, ``system=<value>``, ``backend=<value>``,
+``distro=<value>`` and a dependency in the form ``^<value>``.
 
 Sections
 ########
@@ -92,12 +110,6 @@ allows you to add white space to the beginning of a line. The only difference be
 are where they are placed in the script the `@pre` section is placed at the beginning of the script
 right after the `@from` section.
 
-@arg
-----
-The `@arg` section specifies build time arguments that are passed to the backend. If these arguments are not passed to
-the backend at build time it will fail. Once an arg has been defined in the `@arg` section it can be referenced
-throughout the script with `@(<argument>)`.
-
 @copy
 -----
 The `@copy` section takes a list of files/dir to be copied in the <src> <dest> format.
@@ -105,12 +117,14 @@ The `@copy` section takes a list of files/dir to be copied in the <src> <dest> f
 @run
 ----
 The `@run` section takes a list of commands to be run in the container. These commands should be written as if they all
-occur one after the other in the same shell.
+occur one after the other in the same shell. One added feature to the @run section is the ``!envar`` directive. This
+directive will add the following variable definition to the @env section as well as to the current @run section. Use
+the format ``!envar <name> <value>``.
 
 @env
 ----
 The `@env` section sets environment variables. These variables will only be available when the container is run or in
-the next build so if there is a variable that is needed in the run section you must declare it there as well.
+the next build so if there is a variable that is needed in the run section use the ``!envar`` directive in the @run section.
 
 @label
 ------
@@ -125,8 +139,3 @@ in the `@entry` section.
 @post
 -----
 See :ref:`@pre <pre_section>`. The `@post` section is placed at the end of the script after all other sections.
-
-Conditionals
-############
-It is handy somtimes to be able to limit certain commands to a backend(s) this can be done by placing a `?<backend>`
-at the beginning of the line in question.
diff --git a/docs/build/html/_sources/starting/basic.rst.txt b/docs/build/html/_sources/starting/basic.rst.txt
index 8c4abb5..99d4beb 100644
--- a/docs/build/html/_sources/starting/basic.rst.txt
+++ b/docs/build/html/_sources/starting/basic.rst.txt
@@ -3,131 +3,82 @@
 Overview
 ********
 
-Concept
-#######
-Velocity is a tool to help with the maintenance of a variety of container builds on multiple systems, backends
-(e.g podman or apptainer) and distros.
-
 How it Works
 ############
 Velocity works by building a set of containers in a chain so that the final container has all of the needed components.
-
-
-Layout
-######
-The contents of the Velocity repo are fairly simple.
-
-.. code-block::
-
-    .
-    ├── docs
-    ├── lib
-    ├── README.md
-    ├── setup-env.sh
-    └── velocity
-
-For informational purposes there is a folder `docs` which holds this documentation and a README file.
-The `setup-env.sh` script can be used to 'install' velocity. The lib folder holds a python package which the
-velocity script needs to run.
-
-
-
+Velocity maintains a very hands off approach. It is only as good as the templates/configuration that you write.
+In general it will assume that a particular build will work unless you tell it otherwise. It is important to note
+that while Velocity has many features that are similar to those provided by a package manager, it is NOT a
+package manager. Rather it should be viewed as a templating and build orchestration tool.
 
 Installation
 ############
 
-First you will need to set up a conda environment for Velocity and install the following packages:
-
-.. note::
-
-    For more info on creating a custom conda environment on OLCF systems visit https://docs.olcf.ornl.gov/software/python/index.html#custom-environments.
-
-.. code-block::
-
-    conda install pyyaml networkx colorama python-editor
-
-.. important::
-
-    If you wish to build the docs you will also need to install `sphinx` and `sphinx-rtd-theme`.
-
-Next clone the Velocity git repository to the desired location.
+The easiest way to install velocity is to install prebuilt python packages using pip.
 
 .. code-block:: bash
 
-    git clone https://gitlab.ccs.ornl.gov/saue-software/velocity.git
+    pip install olcf-velocity
 
-You can then setup Velocity by sourcing the `setup-env.sh` script.
+You can also clone the velocity repository and build/install velocity from source.
 
 .. code-block:: bash
 
-    . ./velocity/setup-env.sh
-
-The `setup-env.sh` script will help you choose the value of several environment :ref:`variables<configuration>`
-that velocity uses.
+    git clone https://github.com/olcf/velocity.git
+    cd velocity
+    python3 -m build
+    # install the built python wheel package
+    pip install dist/olcf-velocity-<version>*.whl
 
-You should now be able to run the `velocity` command.
+Now you can use Velocity as a python module! We recommend setting a bash alias for convenience.
 
 .. code-block:: bash
 
+    user@hostname:~$ alias velocity="python3 -m velocity"
     user@hostname:~$ velocity
-    ==> System: x86_64
-    ==> Backend: podman
-    ==> Distro: fedora
+    usage: velocity [-h] [-v] [-D {TRACE,DEBUG,INFO,SUCCESS,WARNING,ERROR,CRITICAL}] [-b BACKEND] [-s SYSTEM] [-d DISTRO] {build,avail,spec} ...
 
-    usage: velocity [-h] [-v] [-b BACKEND] [-s SYSTEM] [-d DISTRO]
-                    {build,avail,spec,edit} ...
-
-    Build tool for OLCF containers
+    build tool for OLCF containers
 
     positional arguments:
-      {build,avail,spec,edit}
+      {build,avail,spec}
         build               build specified container image
         avail               lookup available images
         spec                lookup image dependencies
-        edit                edit image files
 
     options:
       -h, --help            show this help message and exit
       -v, --version         program version
+      -D {TRACE,DEBUG,INFO,SUCCESS,WARNING,ERROR,CRITICAL}, --debug {TRACE,DEBUG,INFO,SUCCESS,WARNING,ERROR,CRITICAL}
+                            set debug output level
       -b BACKEND, --backend BACKEND
       -s SYSTEM, --system SYSTEM
       -d DISTRO, --distro DISTRO
 
-    See (https://gitlab.ccs.ornl.gov/saue-software/velocity)
-
+    See https://github.com/olcf/velocity
 
 .. _configuration:
 
 Configuration
 #############
-There are five system variables that need to be set for Velocity to work (these are set in the `setup-env.sh` script).
+Velocity has a number of configuration options. The basic ones are setting the system name, container backend,
+container distro, the path(s) to your image definitions and the build scratch directory.
+To see more configuration options go to the :doc:`configuration </reference/config>` page. The easiest way to configure velocity is to
+edit ``~/.velocity/config.yaml``.
 
-`VELOCITY_IMAGE_DIR`
---------------------
-This variable points to the directory containing the the image definitions.
+.. code-block::
+
+    velocity:
+      system: frontier
+      backend: apptainer
+      distro: ubuntu
+      image_path: # a list of : seperated paths
+      build_dir: # path to a scratch space
 
 .. note::
 
     Image definitions can be created by the user as needed but a base set for usage at OLCF are provided at
-    `https://gitlab.ccs.ornl.gov/saue-software/velocity-images.git`
-
-`VELOCITY_SYSTEM`
------------------
-This variable specifies what computer system you are building for (e.g. frontier).
-
-`VELOCITY_BACKEND`
-------------------
-This variable specifies the container backend that should be used (e.g podman).
-
-`VELOCITY_DISTRO`
------------------
-This variable specifies the distro of the container images that will be built.
-
-`VELOCITY_BUILD_DIR`
---------------------
-This variable specifies a scratch space for Velocity to preform builds in.
-
-
+    https://github.com/olcf/velocity-images
 
 Basic Usage
 ###########
@@ -140,27 +91,20 @@ The `avail` command prints the defined images that can be built.
 .. code-block:: bash
 
     user@hostname:~$ velocity avail
-    ==> System: x86_64
-    ==> Backend: podman
-    ==> Distro: centos
-
-    ==> centos
-            stream8
     ==> gcc
-            11.2.0
-    ==> hmmer
-            3.4
-    ==> kalign
-            3.4.0
-    ==> miniforge3
-            23.11.0
-    ==> python
-            3.11.8
-    ==> pytorch
-            latest
-
-Each image is listed and then indented underneath is a list of the available versions
-(in velocity they are called tags).
+        12.3.0
+        13.2.0
+        14.1.0
+    ==> mpich
+        3.4.3
+    ==> rocm
+        5.7.1
+    ==> ubuntu
+        20.04
+        22.04
+        24.04
+
+Each image is listed and then indented underneath is a list of the available versions.
 
 `spec`
 ------
@@ -170,37 +114,28 @@ The `spec` command shows the dependencies for a given image (or list of images)
 .. code-block:: bash
 
     user@hostname:~$ velocity spec pytorch
-    ==> System: summit
-    ==> Backend: podman
-    ==> Distro: centos
-
-      > pytorch@=latest
-         ^cuda@=11.7.1
-            ^centos@=stream8
-         ^cudnn@=8.5.0.96
-            ^cuda@=11.7.1
-               ^centos@=stream8
-         ^spectrum-mpi@=10.4.0.6
-            ^centos@=stream8
-         ^gcc@=11.2.0
-            ^centos@=stream8
-         ^miniforge3@=23.11.0
-            ^centos@=stream8
-
+      > pytorch@latest
+         ^cuda@11.7.1
+            ^centos@stream8
+         ^cudnn@8.5.0.96
+            ^cuda@11.7.1
+               ^centos@stream8
+         ^spectrum-mpi@10.4.0.6
+            ^centos@stream8
+         ^gcc@11.2.0
+            ^centos@stream8
+         ^miniforge3@23.11.0
+            ^centos@stream8
 
 
 `build`
 -------
 
-The `build` can be used to build an container image from one or more image definitions.
+The `build` command can be used to build an container image from one or more image definitions.
 
 .. code-block:: bash
 
     user@hostname:~$ velocity build centos
-    ==> System: x86_64
-    ==> Backend: podman
-    ==> Distro: centos
-
     ==> Build Order:
             centos@=stream8
 
@@ -214,10 +149,6 @@ Both the spec and the build command can also take a list of images.
 .. code-block:: bash
 
     user@hostname:~$ velocity build gcc python
-    ==> System: x86_64
-    ==> Backend: podman
-    ==> Distro: centos
-
     ==> Build Order:
             centos@=stream8
             gcc@=11.2.0
@@ -237,20 +168,3 @@ Both the spec and the build command can also take a list of images.
     ==> sunflyhd: GENERATING SCRIPT ...
     ==> sunflyhd: BUILDING ...
     ==> sunflyhd: IMAGE localhost/python__3.11.8__x86_64__centos:latest (python@=3.11.8) BUILT [0:23:19]
-
-`edit`
-------
-The edit command can be used to edit the VTMP or specification file for an image. By default
-it edits the VTMP file. Add `-s` to edit the `specifications.yaml` file.
-
-.. code-block:: bash
-
-    user@hostname:~$ velocity edit --help
-    usage: velocity edit [-h] [-s] target
-
-    positional arguments:
-      target               image to edit
-
-    options:
-      -h, --help           show this help message and exit
-      -s, --specification  edit the specifications file
diff --git a/docs/build/html/_sources/starting/tutorial.rst.txt b/docs/build/html/_sources/starting/tutorial.rst.txt
index 2214604..d232464 100644
--- a/docs/build/html/_sources/starting/tutorial.rst.txt
+++ b/docs/build/html/_sources/starting/tutorial.rst.txt
@@ -2,395 +2,261 @@
 Creating Your First Image
 *************************
 
-Prerequisites
-#############
-You will need to have the Velocity repo cloned and the following environment variables set. You can do this by
-sourcing the `setup-env.sh` script.
-
-.. code-block:: bash
-
-    VELOCITY_IMAGE_DIR=<path to image dir>
-    VELOCITY_BACKEND=podman # if you use apptainer you will need to make changes to some of the examples
-    VELOCITY_BUILD_DIR=/tmp/velocity/build
-    VELOCITY_SYSTEM=x86_64  # if you use a different system name you will need to make changes to some of the examples
-    VELOCITY_ROOT=<git repo> # you will also need to add this to PATH
-    VELOCITY_DISTRO=fedora
-
 Base Image
 ##########
-Let's start with a simple base image. This image will pull an fedora docker image and update the packages.
-Start by creating a directory in the image directory called `fedora` (for this tutorial we are starting with an empty
-image directory). Next we need to create a directory in the `fedora` directory for the version of fedora that we want.
-Let's use `38`. In this directory create a file called `specifications.yaml` and a directory called `templates` with
-a file named `fedora.vtmp`. Your image directory and files should now look like this.
+Let's start with a simple base image. This image will pull an fedora docker image and update the packages. For this
+tutorial I have created the empty directory ``/tmp/velocity/images`` and configured it as the image directory. I have set
+the build directory to ``/tmp/velocity/build``, the backend to ``apptainer`` and the distro as ``fedora``. All
+commands are run in ``/tmp/velocity``.
+Start by creating a directory in the image directory called ``fedora``. In this directory create a file called
+``specs.yaml`` and a directory called ``templates`` with
+a file named ``default.vtmp``. Your image directory and files should now look like this.
 
 .. code-block:: bash
-    :caption: VELOCITY_IMAGE_DIR
+    :caption: /tmp/velocity/images
+
+    fedora
+    ├── specs.yaml
+    └── templates
+        └── default.vtmp
 
-    .
-    └── fedora
-        └── 38
-            ├── specifications.yaml
-            └── templates
-                └── fedora.vtmp
 
 .. code-block:: yaml
-    :caption: fedora/38/specifications.yaml
+    :caption: specs.yaml
 
-    build_specifications:
+    versions:
+      - spec: 38
+        when: distro=fedora
 
-      x86_64:
-        podman:
-          fedora: {}
 
 
 .. code-block:: text
-    :caption: fedora/38/templates/fedora.vtmp
+    :caption: default.vtmp
 
     @from
-        docker.io/fedora:38
+        docker.io/fedora:{{ __version__ }}
 
     @run
         dnf -y upgrade
-
-    @label
-        velocity.config.system %(__system__)
-        velocity.config.backend %(__backend__)
-        velocity.config.distro %(__distro__)
-        velocity.image.%(__name__)__%(__tag__) %(__hash__)
+        dnf clean all
 
 Now if you run `velocity avail` you should get the following.
 
 .. code-block:: bash
 
     user@hostname:~$ velocity avail
-    ==> System: x86_64
-    ==> Backend: podman
-    ==> Distro: fedora
-
     ==> fedora
-            38
+        38
 
 Now build the image.
 
 .. code-block:: bash
 
     user@hostname:~$ velocity build fedora
-    ==> System: x86_64
-    ==> Backend: podman
-    ==> Distro: fedora
-
     ==> Build Order:
-            fedora@=38
+        fedora@38-aa51aa7
+
+    ==> aa51aa7: BUILD fedora@38 ...
+    ==> aa51aa7: GENERATING SCRIPT ...
+    ==> aa51aa7: BUILDING ...
+    ==> aa51aa7: IMAGE /tmp/velocity/build/fedora-38-aa51aa7/aa51aa7.sif (fedora@38) BUILT [0:01:07]
 
-    ==> yftozouc: BUILD fedora@=38 ...
-    ==> yftozouc: GENERATING SCRIPT ...
-    ==> yftozouc: BUILDING ...
-    ==> yftozouc: IMAGE localhost/fedora__38__x86_64__fedora:latest (fedora@=38) BUILT [0:07:10]
+    ==> BUILT: /tmp/velocity/fedora-38__x86_64-fedora.sif
 
 If you wish to see more output you can add the `-v` flag:
 
 .. code-block:: bash
 
     user@hostname:~$ velocity build fedora -v
-    ==> System: x86_64
-    ==> Backend: podman
-    ==> Distro: fedora
-
     ==> Build Order:
-            fedora@=38
-
-    ==> xuoykrdt: BUILD fedora@=38 ...
-    ==> xuoykrdt: GENERATING SCRIPT ...
-            SCRIPT: /tmp/velocity/build/xuoykrdt/script
-            FROM docker.io/fedora:38
-
-            RUN dnf -y upgrade
-
-            LABEL velocity.config.system="x86_64" \
-                velocity.config.backend="podman" \
-                velocity.config.distro="fedora" \
-                velocity.image.fedora__38="ff9fa85cf102560cf3fe2014c3c758fbb3809247537abbeab2c4b67c62dda164"
-
-    ==> xuoykrdt: BUILDING ...
-            #!/usr/bin/env bash
-            podman build -f /tmp/velocity/build/xuoykrdt/script -t localhost/fedora__38__x86_64__fedora:latest .;
-            STEP 1/3: FROM docker.io/fedora:38
-            STEP 2/3: RUN dnf -y upgrade
-            Fedora 38 - x86_64                              131 kB/s |  84 MB     10:53
-            Fedora 38 openh264 (From Cisco) - x86_64        2.9 kB/s | 2.6 kB     00:00
-            Fedora Modular 38 - x86_64                      1.1 MB/s | 2.8 MB     00:02
-            Fedora 38 - x86_64 - Updates                    4.5 MB/s |  40 MB     00:09
-            Fedora Modular 38 - x86_64 - Updates            152 kB/s | 2.1 MB     00:14
-            Last metadata expiration check: 0:00:01 ago on Wed Mar 27 20:09:54 2024.
-            Dependencies resolved.
-            ================================================================================
-             Package                       Arch     Version                 Repo       Size
-            ================================================================================
-            Upgrading:
-             curl                          x86_64   8.0.1-7.fc38            updates   348 k
-             dnf                           noarch   4.19.0-1.fc38           updates   507 k
-             dnf-data                      noarch   4.19.0-1.fc38           updates    39 k
-             elfutils-default-yama-scope   noarch   0.191-1.fc38            updates    12 k
-             elfutils-libelf               x86_64   0.191-1.fc38            updates   208 k
-             elfutils-libs                 x86_64   0.191-1.fc38            updates   263 k
-             expat                         x86_64   2.6.0-1.fc38            updates   112 k
-             keyutils-libs                 x86_64   1.6.3-1.fc38            updates    31 k
-             libcurl                       x86_64   8.0.1-7.fc38            updates   315 k
-             libdnf                        x86_64   0.73.0-1.fc38           updates   681 k
-             libgcc                        x86_64   13.2.1-7.fc38           updates   115 k
-             libgomp                       x86_64   13.2.1-7.fc38           updates   324 k
-             libsolv                       x86_64   0.7.28-1.fc38           updates   426 k
-             libstdc++                     x86_64   13.2.1-7.fc38           updates   870 k
-             ncurses-base                  noarch   6.4-7.20230520.fc38.1   updates    88 k
-             ncurses-libs                  x86_64   6.4-7.20230520.fc38.1   updates   336 k
-             python3                       x86_64   3.11.8-2.fc38           updates    28 k
-             python3-dnf                   noarch   4.19.0-1.fc38           updates   606 k
-             python3-hawkey                x86_64   0.73.0-1.fc38           updates   107 k
-             python3-libdnf                x86_64   0.73.0-1.fc38           updates   859 k
-             python3-libs                  x86_64   3.11.8-2.fc38           updates   9.6 M
-             systemd-libs                  x86_64   253.17-1.fc38           updates   649 k
-             vim-data                      noarch   2:9.1.158-1.fc38        updates    23 k
-             vim-minimal                   x86_64   2:9.1.158-1.fc38        updates   808 k
-             yum                           noarch   4.19.0-1.fc38           updates    37 k
-
-            Transaction Summary
-            ================================================================================
-            Upgrade  25 Packages
-
-            Total download size: 17 M
-            Downloading Packages:
-            (1/25): dnf-data-4.19.0-1.fc38.noarch.rpm       107 kB/s |  39 kB     00:00
-            (2/25): elfutils-default-yama-scope-0.191-1.fc3 224 kB/s |  12 kB     00:00
-            (3/25): curl-8.0.1-7.fc38.x86_64.rpm            637 kB/s | 348 kB     00:00
-            (4/25): dnf-4.19.0-1.fc38.noarch.rpm            807 kB/s | 507 kB     00:00
-            (5/25): elfutils-libelf-0.191-1.fc38.x86_64.rpm 901 kB/s | 208 kB     00:00
-            (6/25): expat-2.6.0-1.fc38.x86_64.rpm           1.1 MB/s | 112 kB     00:00
-            (7/25): keyutils-libs-1.6.3-1.fc38.x86_64.rpm   331 kB/s |  31 kB     00:00
-            (8/25): elfutils-libs-0.191-1.fc38.x86_64.rpm   1.1 MB/s | 263 kB     00:00
-            (9/25): libgcc-13.2.1-7.fc38.x86_64.rpm         872 kB/s | 115 kB     00:00
-            (10/25): libcurl-8.0.1-7.fc38.x86_64.rpm        1.7 MB/s | 315 kB     00:00
-            (11/25): libgomp-13.2.1-7.fc38.x86_64.rpm       1.8 MB/s | 324 kB     00:00
-            (12/25): libdnf-0.73.0-1.fc38.x86_64.rpm        1.8 MB/s | 681 kB     00:00
-            (13/25): libsolv-0.7.28-1.fc38.x86_64.rpm       2.1 MB/s | 426 kB     00:00
-            (14/25): ncurses-base-6.4-7.20230520.fc38.1.noa 423 kB/s |  88 kB     00:00
-            (15/25): ncurses-libs-6.4-7.20230520.fc38.1.x86 1.3 MB/s | 336 kB     00:00
-            (16/25): python3-3.11.8-2.fc38.x86_64.rpm       286 kB/s |  28 kB     00:00
-            (17/25): libstdc++-13.2.1-7.fc38.x86_64.rpm     1.8 MB/s | 870 kB     00:00
-            (18/25): python3-hawkey-0.73.0-1.fc38.x86_64.rp 834 kB/s | 107 kB     00:00
-            (19/25): python3-dnf-4.19.0-1.fc38.noarch.rpm   2.5 MB/s | 606 kB     00:00
-            (20/25): python3-libdnf-0.73.0-1.fc38.x86_64.rp 1.6 MB/s | 859 kB     00:00
-            (21/25): systemd-libs-253.17-1.fc38.x86_64.rpm  1.4 MB/s | 649 kB     00:00
-            (22/25): vim-data-9.1.158-1.fc38.noarch.rpm     196 kB/s |  23 kB     00:00
-            (23/25): yum-4.19.0-1.fc38.noarch.rpm           270 kB/s |  37 kB     00:00
-            (24/25): vim-minimal-9.1.158-1.fc38.x86_64.rpm  2.5 MB/s | 808 kB     00:00
-            (25/25): python3-libs-3.11.8-2.fc38.x86_64.rpm  3.6 MB/s | 9.6 MB     00:02
-            --------------------------------------------------------------------------------
-            Total                                           3.6 MB/s |  17 MB     00:04
-            Running transaction check
-            Transaction check succeeded.
-            Running transaction test
-            Transaction test succeeded.
-            Running transaction
-              Preparing        :                                                        1/1
-              Upgrading        : libgcc-13.2.1-7.fc38.x86_64                           1/50
-              Running scriptlet: libgcc-13.2.1-7.fc38.x86_64                           1/50
-              Upgrading        : libstdc++-13.2.1-7.fc38.x86_64                        2/50
-              Upgrading        : libsolv-0.7.28-1.fc38.x86_64                          3/50
-              Upgrading        : libdnf-0.73.0-1.fc38.x86_64                           4/50
-              Upgrading        : vim-data-2:9.1.158-1.fc38.noarch                      5/50
-              Upgrading        : ncurses-base-6.4-7.20230520.fc38.1.noarch             6/50
-              Upgrading        : ncurses-libs-6.4-7.20230520.fc38.1.x86_64             7/50
-              Upgrading        : libcurl-8.0.1-7.fc38.x86_64                           8/50
-              Upgrading        : expat-2.6.0-1.fc38.x86_64                             9/50
-              Upgrading        : python3-3.11.8-2.fc38.x86_64                         10/50
-              Upgrading        : python3-libs-3.11.8-2.fc38.x86_64                    11/50
-              Upgrading        : python3-libdnf-0.73.0-1.fc38.x86_64                  12/50
-              Upgrading        : python3-hawkey-0.73.0-1.fc38.x86_64                  13/50
-              Upgrading        : elfutils-libelf-0.191-1.fc38.x86_64                  14/50
-              Upgrading        : elfutils-default-yama-scope-0.191-1.fc38.noarch      15/50
-              Running scriptlet: elfutils-default-yama-scope-0.191-1.fc38.noarch      15/50
-              Upgrading        : dnf-data-4.19.0-1.fc38.noarch                        16/50
-              Upgrading        : python3-dnf-4.19.0-1.fc38.noarch                     17/50
-              Upgrading        : dnf-4.19.0-1.fc38.noarch                             18/50
-              Running scriptlet: dnf-4.19.0-1.fc38.noarch                             18/50
-              Upgrading        : yum-4.19.0-1.fc38.noarch                             19/50
-              Upgrading        : elfutils-libs-0.191-1.fc38.x86_64                    20/50
-              Upgrading        : curl-8.0.1-7.fc38.x86_64                             21/50
-              Upgrading        : vim-minimal-2:9.1.158-1.fc38.x86_64                  22/50
-              Upgrading        : systemd-libs-253.17-1.fc38.x86_64                    23/50
-              Upgrading        : libgomp-13.2.1-7.fc38.x86_64                         24/50
-              Upgrading        : keyutils-libs-1.6.3-1.fc38.x86_64                    25/50
-              Cleanup          : elfutils-libs-0.190-2.fc38.x86_64                    26/50
-              Cleanup          : systemd-libs-253.15-2.fc38.x86_64                    27/50
-              Cleanup          : vim-minimal-2:9.1.113-1.fc38.x86_64                  28/50
-              Cleanup          : curl-8.0.1-6.fc38.x86_64                             29/50
-              Cleanup          : yum-4.18.2-1.fc38.noarch                             30/50
-              Running scriptlet: dnf-4.18.2-1.fc38.noarch                             31/50
-              Cleanup          : dnf-4.18.2-1.fc38.noarch                             31/50
-              Running scriptlet: dnf-4.18.2-1.fc38.noarch                             31/50
-              Cleanup          : python3-dnf-4.18.2-1.fc38.noarch                     32/50
-              Cleanup          : dnf-data-4.18.2-1.fc38.noarch                        33/50
-              Cleanup          : vim-data-2:9.1.113-1.fc38.noarch                     34/50
-              Cleanup          : elfutils-default-yama-scope-0.190-2.fc38.noarch      35/50
-              Cleanup          : python3-hawkey-0.72.0-1.fc38.x86_64                  36/50
-              Cleanup          : python3-libdnf-0.72.0-1.fc38.x86_64                  37/50
-              Cleanup          : libdnf-0.72.0-1.fc38.x86_64                          38/50
-              Cleanup          : libstdc++-13.2.1-4.fc38.x86_64                       39/50
-              Cleanup          : python3-libs-3.11.7-2.fc38.x86_64                    40/50
-              Cleanup          : python3-3.11.7-2.fc38.x86_64                         41/50
-              Cleanup          : ncurses-libs-6.4-7.20230520.fc38.x86_64              42/50
-              Cleanup          : ncurses-base-6.4-7.20230520.fc38.noarch              43/50
-              Cleanup          : expat-2.5.0-2.fc38.x86_64                            44/50
-              Cleanup          : libgcc-13.2.1-4.fc38.x86_64                          45/50
-              Running scriptlet: libgcc-13.2.1-4.fc38.x86_64                          45/50
-              Cleanup          : libsolv-0.7.27-1.fc38.x86_64                         46/50
-              Cleanup          : libcurl-8.0.1-6.fc38.x86_64                          47/50
-              Cleanup          : elfutils-libelf-0.190-2.fc38.x86_64                  48/50
-              Cleanup          : libgomp-13.2.1-4.fc38.x86_64                         49/50
-              Cleanup          : keyutils-libs-1.6.1-6.fc38.x86_64                    50/50
-              Running scriptlet: keyutils-libs-1.6.1-6.fc38.x86_64                    50/50
-              Verifying        : curl-8.0.1-7.fc38.x86_64                              1/50
-              Verifying        : curl-8.0.1-6.fc38.x86_64                              2/50
-              Verifying        : dnf-4.19.0-1.fc38.noarch                              3/50
-              Verifying        : dnf-4.18.2-1.fc38.noarch                              4/50
-              Verifying        : dnf-data-4.19.0-1.fc38.noarch                         5/50
-              Verifying        : dnf-data-4.18.2-1.fc38.noarch                         6/50
-              Verifying        : elfutils-default-yama-scope-0.191-1.fc38.noarch       7/50
-              Verifying        : elfutils-default-yama-scope-0.190-2.fc38.noarch       8/50
-              Verifying        : elfutils-libelf-0.191-1.fc38.x86_64                   9/50
-              Verifying        : elfutils-libelf-0.190-2.fc38.x86_64                  10/50
-              Verifying        : elfutils-libs-0.191-1.fc38.x86_64                    11/50
-              Verifying        : elfutils-libs-0.190-2.fc38.x86_64                    12/50
-              Verifying        : expat-2.6.0-1.fc38.x86_64                            13/50
-              Verifying        : expat-2.5.0-2.fc38.x86_64                            14/50
-              Verifying        : keyutils-libs-1.6.3-1.fc38.x86_64                    15/50
-              Verifying        : keyutils-libs-1.6.1-6.fc38.x86_64                    16/50
-              Verifying        : libcurl-8.0.1-7.fc38.x86_64                          17/50
-              Verifying        : libcurl-8.0.1-6.fc38.x86_64                          18/50
-              Verifying        : libdnf-0.73.0-1.fc38.x86_64                          19/50
-              Verifying        : libdnf-0.72.0-1.fc38.x86_64                          20/50
-              Verifying        : libgcc-13.2.1-7.fc38.x86_64                          21/50
-              Verifying        : libgcc-13.2.1-4.fc38.x86_64                          22/50
-              Verifying        : libgomp-13.2.1-7.fc38.x86_64                         23/50
-              Verifying        : libgomp-13.2.1-4.fc38.x86_64                         24/50
-              Verifying        : libsolv-0.7.28-1.fc38.x86_64                         25/50
-              Verifying        : libsolv-0.7.27-1.fc38.x86_64                         26/50
-              Verifying        : libstdc++-13.2.1-7.fc38.x86_64                       27/50
-              Verifying        : libstdc++-13.2.1-4.fc38.x86_64                       28/50
-              Verifying        : ncurses-base-6.4-7.20230520.fc38.1.noarch            29/50
-              Verifying        : ncurses-base-6.4-7.20230520.fc38.noarch              30/50
-              Verifying        : ncurses-libs-6.4-7.20230520.fc38.1.x86_64            31/50
-              Verifying        : ncurses-libs-6.4-7.20230520.fc38.x86_64              32/50
-              Verifying        : python3-3.11.8-2.fc38.x86_64                         33/50
-              Verifying        : python3-3.11.7-2.fc38.x86_64                         34/50
-              Verifying        : python3-dnf-4.19.0-1.fc38.noarch                     35/50
-              Verifying        : python3-dnf-4.18.2-1.fc38.noarch                     36/50
-              Verifying        : python3-hawkey-0.73.0-1.fc38.x86_64                  37/50
-              Verifying        : python3-hawkey-0.72.0-1.fc38.x86_64                  38/50
-              Verifying        : python3-libdnf-0.73.0-1.fc38.x86_64                  39/50
-              Verifying        : python3-libdnf-0.72.0-1.fc38.x86_64                  40/50
-              Verifying        : python3-libs-3.11.8-2.fc38.x86_64                    41/50
-              Verifying        : python3-libs-3.11.7-2.fc38.x86_64                    42/50
-              Verifying        : systemd-libs-253.17-1.fc38.x86_64                    43/50
-              Verifying        : systemd-libs-253.15-2.fc38.x86_64                    44/50
-              Verifying        : vim-data-2:9.1.158-1.fc38.noarch                     45/50
-              Verifying        : vim-data-2:9.1.113-1.fc38.noarch                     46/50
-              Verifying        : vim-minimal-2:9.1.158-1.fc38.x86_64                  47/50
-              Verifying        : vim-minimal-2:9.1.113-1.fc38.x86_64                  48/50
-              Verifying        : yum-4.19.0-1.fc38.noarch                             49/50
-              Verifying        : yum-4.18.2-1.fc38.noarch                             50/50
-
-            Upgraded:
-              curl-8.0.1-7.fc38.x86_64
-              dnf-4.19.0-1.fc38.noarch
-              dnf-data-4.19.0-1.fc38.noarch
-              elfutils-default-yama-scope-0.191-1.fc38.noarch
-              elfutils-libelf-0.191-1.fc38.x86_64
-              elfutils-libs-0.191-1.fc38.x86_64
-              expat-2.6.0-1.fc38.x86_64
-              keyutils-libs-1.6.3-1.fc38.x86_64
-              libcurl-8.0.1-7.fc38.x86_64
-              libdnf-0.73.0-1.fc38.x86_64
-              libgcc-13.2.1-7.fc38.x86_64
-              libgomp-13.2.1-7.fc38.x86_64
-              libsolv-0.7.28-1.fc38.x86_64
-              libstdc++-13.2.1-7.fc38.x86_64
-              ncurses-base-6.4-7.20230520.fc38.1.noarch
-              ncurses-libs-6.4-7.20230520.fc38.1.x86_64
-              python3-3.11.8-2.fc38.x86_64
-              python3-dnf-4.19.0-1.fc38.noarch
-              python3-hawkey-0.73.0-1.fc38.x86_64
-              python3-libdnf-0.73.0-1.fc38.x86_64
-              python3-libs-3.11.8-2.fc38.x86_64
-              systemd-libs-253.17-1.fc38.x86_64
-              vim-data-2:9.1.158-1.fc38.noarch
-              vim-minimal-2:9.1.158-1.fc38.x86_64
-              yum-4.19.0-1.fc38.noarch
-
-            Complete!
-            --> 787eba03a2e
-            STEP 3/3: LABEL velocity.config.system="x86_64"     velocity.config.backend="podman"     velocity.config.distro="fedora"     velocity.image.fedora__38="ff9fa85cf102560cf3fe2014c3c758fbb3809247537abbeab2c4b67c62dda164"
-            COMMIT localhost/fedora__38__x86_64__fedora:latest
-            --> 17c3457c281
-            Successfully tagged localhost/fedora__38__x86_64__fedora:latest
-            17c3457c281309909691b183b77323eb56390792a787e4a319b494d40868c907
-    ==> xuoykrdt: IMAGE localhost/fedora__38__x86_64__fedora:latest (fedora@=38) BUILT [0:13:27]
+        fedora@38-aa51aa7
+
+    ==> aa51aa7: BUILD fedora@38 ...
+    ==> aa51aa7: GENERATING SCRIPT ...
+        SCRIPT: /tmp/velocity/build/fedora-38-aa51aa7/script
+        Bootstrap: docker
+        From: docker.io/fedora:38
+
+        %post
+        dnf -y upgrade
+        dnf clean all
+    ==> aa51aa7: BUILDING ...
+        #!/usr/bin/env bash
+        apptainer build --disable-cache /tmp/velocity/build/fedora-38-aa51aa7/aa51aa7.sif /tmp/velocity/build/fedora-38-aa51aa7/script;
+        Fedora 38 - x86_64                              2.3 MB/s |  83 MB     00:35
+        Fedora 38 openh264 (From Cisco) - x86_64        2.8 kB/s | 2.6 kB     00:00
+        Fedora Modular 38 - x86_64                      1.8 MB/s | 2.8 MB     00:01
+        Fedora 38 - x86_64 - Updates                    2.8 MB/s |  42 MB     00:14
+        Fedora Modular 38 - x86_64 - Updates            257 kB/s | 2.2 MB     00:08
+        Dependencies resolved.
+        ================================================================================
+         Package                            Arch    Version              Repo      Size
+        ================================================================================
+        Upgrading:
+         fedora-release-common              noarch  38-37                updates   20 k
+         fedora-release-container           noarch  38-37                updates   10 k
+         fedora-release-identity-container  noarch  38-37                updates   12 k
+         glibc                              x86_64  2.37-19.fc38         updates  2.1 M
+         glibc-common                       x86_64  2.37-19.fc38         updates  320 k
+         glibc-minimal-langpack             x86_64  2.37-19.fc38         updates   42 k
+         gnutls                             x86_64  3.8.5-1.fc38         updates  1.1 M
+         libnghttp2                         x86_64  1.52.0-3.fc38        updates   75 k
+         python-pip-wheel                   noarch  22.3.1-4.fc38        updates  1.4 M
+         python3                            x86_64  3.11.9-2.fc38        updates   28 k
+         python3-libs                       x86_64  3.11.9-2.fc38        updates  9.6 M
+         tpm2-tss                           x86_64  4.0.2-1.fc38         updates  391 k
+         vim-data                           noarch  2:9.1.393-1.fc38     updates   23 k
+         vim-minimal                        x86_64  2:9.1.393-1.fc38     updates  810 k
+        Installing weak dependencies:
+         libxcrypt-compat                   x86_64  4.4.36-1.fc38        updates   90 k
+
+        Transaction Summary
+        ================================================================================
+        Install   1 Package
+        Upgrade  14 Packages
+
+        Total download size: 16 M
+        Downloading Packages:
+        (1/15): fedora-release-container-38-37.noarch.r 160 kB/s |  10 kB     00:00
+        (2/15): fedora-release-common-38-37.noarch.rpm  228 kB/s |  20 kB     00:00
+        (3/15): fedora-release-identity-container-38-37 385 kB/s |  12 kB     00:00
+        (4/15): libxcrypt-compat-4.4.36-1.fc38.x86_64.r 648 kB/s |  90 kB     00:00
+        (5/15): glibc-minimal-langpack-2.37-19.fc38.x86 1.1 MB/s |  42 kB     00:00
+        (6/15): glibc-common-2.37-19.fc38.x86_64.rpm    2.4 MB/s | 320 kB     00:00
+        (7/15): libnghttp2-1.52.0-3.fc38.x86_64.rpm     1.7 MB/s |  75 kB     00:00
+        (8/15): glibc-2.37-19.fc38.x86_64.rpm           8.1 MB/s | 2.1 MB     00:00
+        (9/15): python3-3.11.9-2.fc38.x86_64.rpm        686 kB/s |  28 kB     00:00
+        (10/15): python-pip-wheel-22.3.1-4.fc38.noarch. 8.8 MB/s | 1.4 MB     00:00
+        (11/15): tpm2-tss-4.0.2-1.fc38.x86_64.rpm       6.1 MB/s | 391 kB     00:00
+        (12/15): gnutls-3.8.5-1.fc38.x86_64.rpm         3.1 MB/s | 1.1 MB     00:00
+        (13/15): vim-data-9.1.393-1.fc38.noarch.rpm     503 kB/s |  23 kB     00:00
+        (14/15): vim-minimal-9.1.393-1.fc38.x86_64.rpm  4.3 MB/s | 810 kB     00:00
+        (15/15): python3-libs-3.11.9-2.fc38.x86_64.rpm   11 MB/s | 9.6 MB     00:00
+        --------------------------------------------------------------------------------
+        Total                                            11 MB/s |  16 MB     00:01
+        Running transaction check
+        Transaction check succeeded.
+        Running transaction test
+        Transaction test succeeded.
+        Running transaction
+          Preparing        :                                                        1/1
+          Upgrading        : glibc-common-2.37-19.fc38.x86_64                      1/29
+          Upgrading        : glibc-minimal-langpack-2.37-19.fc38.x86_64            2/29
+          Running scriptlet: glibc-2.37-19.fc38.x86_64                             3/29
+          Upgrading        : glibc-2.37-19.fc38.x86_64                             3/29
+          Running scriptlet: glibc-2.37-19.fc38.x86_64                             3/29
+          Upgrading        : fedora-release-identity-container-38-37.noarch        4/29
+          Upgrading        : fedora-release-container-38-37.noarch                 5/29
+          Upgrading        : fedora-release-common-38-37.noarch                    6/29
+          Installing       : libxcrypt-compat-4.4.36-1.fc38.x86_64                 7/29
+          Upgrading        : python-pip-wheel-22.3.1-4.fc38.noarch                 8/29
+          Upgrading        : python3-3.11.9-2.fc38.x86_64                          9/29
+          Upgrading        : python3-libs-3.11.9-2.fc38.x86_64                    10/29
+          Upgrading        : vim-data-2:9.1.393-1.fc38.noarch                     11/29
+          Upgrading        : vim-minimal-2:9.1.393-1.fc38.x86_64                  12/29
+          Upgrading        : gnutls-3.8.5-1.fc38.x86_64                           13/29
+          Upgrading        : libnghttp2-1.52.0-3.fc38.x86_64                      14/29
+          Running scriptlet: tpm2-tss-4.0.2-1.fc38.x86_64                         15/29
+          Upgrading        : tpm2-tss-4.0.2-1.fc38.x86_64                         15/29
+          Cleanup          : fedora-release-common-38-36.noarch                   16/29
+          Cleanup          : gnutls-3.8.4-1.fc38.x86_64                           17/29
+          Cleanup          : tpm2-tss-4.0.1-3.fc38.x86_64                         18/29
+          Cleanup          : vim-minimal-2:9.1.309-1.fc38.x86_64                  19/29
+          Cleanup          : libnghttp2-1.52.0-2.fc38.x86_64                      20/29
+          Cleanup          : python3-3.11.8-2.fc38.x86_64                         21/29
+          Cleanup          : fedora-release-container-38-36.noarch                22/29
+          Cleanup          : fedora-release-identity-container-38-36.noarch       23/29
+          Cleanup          : vim-data-2:9.1.309-1.fc38.noarch                     24/29
+          Cleanup          : python3-libs-3.11.8-2.fc38.x86_64                    25/29
+          Cleanup          : python-pip-wheel-22.3.1-3.fc38.noarch                26/29
+          Cleanup          : glibc-2.37-18.fc38.x86_64                            27/29
+          Cleanup          : glibc-minimal-langpack-2.37-18.fc38.x86_64           28/29
+          Cleanup          : glibc-common-2.37-18.fc38.x86_64                     29/29
+          Running scriptlet: glibc-common-2.37-18.fc38.x86_64                     29/29
+          Verifying        : libxcrypt-compat-4.4.36-1.fc38.x86_64                 1/29
+          Verifying        : fedora-release-common-38-37.noarch                    2/29
+          Verifying        : fedora-release-common-38-36.noarch                    3/29
+          Verifying        : fedora-release-container-38-37.noarch                 4/29
+          Verifying        : fedora-release-container-38-36.noarch                 5/29
+          Verifying        : fedora-release-identity-container-38-37.noarch        6/29
+          Verifying        : fedora-release-identity-container-38-36.noarch        7/29
+          Verifying        : glibc-2.37-19.fc38.x86_64                             8/29
+          Verifying        : glibc-2.37-18.fc38.x86_64                             9/29
+          Verifying        : glibc-common-2.37-19.fc38.x86_64                     10/29
+          Verifying        : glibc-common-2.37-18.fc38.x86_64                     11/29
+          Verifying        : glibc-minimal-langpack-2.37-19.fc38.x86_64           12/29
+          Verifying        : glibc-minimal-langpack-2.37-18.fc38.x86_64           13/29
+          Verifying        : gnutls-3.8.5-1.fc38.x86_64                           14/29
+          Verifying        : gnutls-3.8.4-1.fc38.x86_64                           15/29
+          Verifying        : libnghttp2-1.52.0-3.fc38.x86_64                      16/29
+          Verifying        : libnghttp2-1.52.0-2.fc38.x86_64                      17/29
+          Verifying        : python-pip-wheel-22.3.1-4.fc38.noarch                18/29
+          Verifying        : python-pip-wheel-22.3.1-3.fc38.noarch                19/29
+          Verifying        : python3-3.11.9-2.fc38.x86_64                         20/29
+          Verifying        : python3-3.11.8-2.fc38.x86_64                         21/29
+          Verifying        : python3-libs-3.11.9-2.fc38.x86_64                    22/29
+          Verifying        : python3-libs-3.11.8-2.fc38.x86_64                    23/29
+          Verifying        : tpm2-tss-4.0.2-1.fc38.x86_64                         24/29
+          Verifying        : tpm2-tss-4.0.1-3.fc38.x86_64                         25/29
+          Verifying        : vim-data-2:9.1.393-1.fc38.noarch                     26/29
+          Verifying        : vim-data-2:9.1.309-1.fc38.noarch                     27/29
+          Verifying        : vim-minimal-2:9.1.393-1.fc38.x86_64                  28/29
+          Verifying        : vim-minimal-2:9.1.309-1.fc38.x86_64                  29/29
+
+        Upgraded:
+          fedora-release-common-38-37.noarch
+          fedora-release-container-38-37.noarch
+          fedora-release-identity-container-38-37.noarch
+          glibc-2.37-19.fc38.x86_64
+          glibc-common-2.37-19.fc38.x86_64
+          glibc-minimal-langpack-2.37-19.fc38.x86_64
+          gnutls-3.8.5-1.fc38.x86_64
+          libnghttp2-1.52.0-3.fc38.x86_64
+          python-pip-wheel-22.3.1-4.fc38.noarch
+          python3-3.11.9-2.fc38.x86_64
+          python3-libs-3.11.9-2.fc38.x86_64
+          tpm2-tss-4.0.2-1.fc38.x86_64
+          vim-data-2:9.1.393-1.fc38.noarch
+          vim-minimal-2:9.1.393-1.fc38.x86_64
+        Installed:
+          libxcrypt-compat-4.4.36-1.fc38.x86_64
+
+        Complete!
+        42 files removed
+    ==> aa51aa7: IMAGE /tmp/velocity/build/fedora-38-aa51aa7/aa51aa7.sif (fedora@38) BUILT [0:01:33]
+
+    ==> BUILT: /tmp/velocity/fedora-38__x86_64-fedora.sif
 
 Adding Different Versions
 #########################
 So now we have a base Fedora image. That's great but before we move on let's make some different versions of the image
-so that we have more options for building later. Go ahead and copy the `fedora/38` directory several times:
+so that we have more options for building later. Edit the fedora ``specs.yaml`` and add some versions.
 
-.. code-block:: bash
-
-    cp -rf fedora/38/ fedora/39
-    cp -rf fedora/38/ fedora/40
-    cp -rf fedora/38/ fedora/41
-
-For each of the versions you will need to go in and change the tag on the source. For example `docker.io/fedora:38`
-in `fedora/40/template/fedora.vtmp` should be changed to `docker.io/fedora:40`.
+.. code-block:: yaml
+    :caption: spec.yaml
 
-.. code-block:: bash
-    :caption: VELOCITY_IMAGE_DIR
-
-    .
-    └── fedora
-        ├── 38
-        │    ├── specifications.yaml
-        │    └── templates
-        │        └── fedora.vtmp
-        ├── 39
-        │    ├── specifications.yaml
-        │    └── templates
-        │        └── fedora.vtmp
-        ├── 40
-        │    ├── specifications.yaml
-        │    └── templates
-        │        └── fedora.vtmp
-        └── 41
-            ├── specifications.yaml
-            └── templates
-                └── fedora.vtmp
+    versions:
+      - spec:
+          - 38
+          - 39
+          - 40
+          - 41
+        when: distro=fedora
 
 .. code-block:: bash
 
     user@hostname:~$ velocity avail
-    ==> System: x86_64
-    ==> Backend: podman
-    ==> Distro: fedora
-
     ==> fedora
-            38
-            39
-            40
-            41
+        38
+        39
+        40
+        41
 
 Specifying Version
 ##################
-When building an image Velocity will default to the latest image. To specify a version use `<image>@=<version>` e.g.
-fedora\@=40. Versions are compared by splitting the version string up based on periods and then comparing the sections
-left to right alphanumerically.
+When building an image Velocity will default to the latest image. To specify a version use ``<image>@<version>`` e.g.
+``fedora@40``. Versions take the form ``<major>.<minor>.<patch>-<suffix>``. You can also specify greater than, less
+than, and in-between via ``<image>@<version>:``, ``<image>@:<version>`` and ``<image>@<version>:<version>`` respectively.
 
 Hello World!
 ############
@@ -398,525 +264,256 @@ Now let's get a little more complicated. Let's create an image that runs a pytho
 can give it whatever version you want:
 
 .. code-block:: bash
-    :caption: VELOCITY_IMAGE_DIR
-
-    .
-    ├── fedora
-    │    ├── 38
-    │    │   ├── specifications.yaml
-    │    │   └── templates
-    │    │       └── fedora.vtmp
-    │    ├── 39
-    │    │   ├── specifications.yaml
-    │    │   └── templates
-    │    │       └── fedora.vtmp
-    │    ├── 40
-    │    │   ├── specifications.yaml
-    │    │   └── templates
-    │    │       └── fedora.vtmp
-    │    └── 41
-    │        ├── specifications.yaml
-    │        └── templates
-    │            └── fedora.vtmp
-    └── hello-world
-        └── 1.0
-            ├── x86_64
-            │   └── hello_world.py
-            ├── specifications.yaml
-            └── templates
-                └── fedora.vtmp
-
-Notice that now there is a new folder called `x86_64` with a python file in it.
+    :caption: /tmp/velocity/images
+
+    fedora
+    ├── specs.yaml
+    └── templates
+        └── default.vtmp
+    hello-world
+    ├── files
+    │   └── hello_world.py
+    ├── specs.yaml
+    └── templates
+        └── default.vtmp
+
+Notice that now there is a new folder called ``files`` with a python script in it.
 
 .. code-block:: bash
-    :caption: hello-world/1.0/x86_64/hello_world.py
+    :caption: hello_world.py
 
     #!/usr/bin/env python3
 
     print("Hello, World!")
 
 .. code-block:: yaml
-    :caption: hello-world/1.0/specifications.yaml
-
-    build_specifications:
+    :caption: specs.yaml
 
-      x86_64:
-        podman:
-          fedora:
-            dependencies:
-              - fedora
-            variables:
-              fr: fakeroot
+    versions:
+      - spec: 1.0
+    dependencies:
+      - spec: fedora
+        when: distro=fedora
+    files:
+      - name: hello_world.py
 
 
 .. code-block:: text
-    :caption: hello-world/1.0/templates/fedora.vtmp
+    :caption: default.vtmp
 
     @from
-        %(__base__)
+        {{ __base__ }}
 
     @copy
-        hello_world.py /hello_world.py
+        hello_world.py /hello_world
+
+    @run
+        dnf -y install python3
+        chmod +x /hello_world
 
     @entry
-        /hello_world.py
+        /hello_world
 
-    @label
-        velocity.image.%(__name__)__%(__tag__) %(__hash__)
 
 .. code-block:: bash
 
     user@hostname:~$ velocity avail
-    ==> System: x86_64
-    ==> Backend: podman
-    ==> Distro: fedora
-
     ==> fedora
-            38
-            39
-            40
-            41
+        38
+        39
+        40
+        41
     ==> hello-world
-            1.0
+        1.0
 
 .. code-block:: bash
 
     user@hostname:~$ velocity build hello-world -v
-    ==> System: x86_64
-    ==> Backend: podman
-    ==> Distro: fedora
-
     ==> Build Order:
-            fedora@=41
-            hello-world@=1.0
-
-    ==> wmrxxohy: BUILD fedora@=41 ...
-    ==> wmrxxohy: GENERATING SCRIPT ...
-            SCRIPT: /tmp/velocity/build/wmrxxohy/script
-            FROM docker.io/fedora:41
-
-            RUN dnf -y upgrade
-
-            LABEL velocity.config.system="x86_64" \
-                velocity.config.backend="podman" \
-                velocity.config.distro="fedora" \
-                velocity.image.fedora__41="1ad7926d7e542fa521fe4a2eca54aa73caea82958b1f07adf04728b5762063ac"
-
-    ==> wmrxxohy: BUILDING ...
-            #!/usr/bin/env bash
-            podman build -f /tmp/velocity/build/wmrxxohy/script -t localhost/wmrxxohy:latest .;
-            STEP 1/3: FROM docker.io/fedora:41
-            STEP 2/3: RUN dnf -y upgrade
-            Fedora rawhide openh264 (From Cisco) - x86_64    59  B/s | 123  B     00:02
-            Fedora - Rawhide - Developmental packages for t 3.1 MB/s |  20 MB     00:06
-            Dependencies resolved.
-            ======================================================================================
-             Package                             Arch    Version                    Repo      Size
-            ======================================================================================
-            Upgrading:
-             audit-libs                          x86_64  4.0.1-1.fc41               rawhide  126 k
-             authselect                          x86_64  1.5.0-5.fc41               rawhide  146 k
-             authselect-libs                     x86_64  1.5.0-5.fc41               rawhide  219 k
-             crypto-policies                     noarch  20240320-1.git58e3d95.fc41 rawhide   91 k
-             curl                                x86_64  8.6.0-7.fc41               rawhide  301 k
-             dnf                                 noarch  4.19.2-1.fc41              rawhide  503 k
-             dnf-data                            noarch  4.19.2-1.fc41              rawhide   40 k
-             elfutils-default-yama-scope         noarch  0.191-5.fc41               rawhide   13 k
-             elfutils-libelf                     x86_64  0.191-5.fc41               rawhide  209 k
-             elfutils-libs                       x86_64  0.191-5.fc41               rawhide  258 k
-             expat                               x86_64  2.6.2-1.fc41               rawhide  113 k
-             fedora-release-common               noarch  41-0.6                     rawhide   21 k
-             fedora-release-container            noarch  41-0.6                     rawhide   11 k
-             fedora-release-identity-container   noarch  41-0.6                     rawhide   12 k
-             glib2                               x86_64  2.80.0-1.fc41              rawhide  3.0 M
-             glibc                               x86_64  2.39.9000-10.fc41          rawhide  2.2 M
-             glibc-common                        x86_64  2.39.9000-10.fc41          rawhide  393 k
-             glibc-minimal-langpack              x86_64  2.39.9000-10.fc41          rawhide  106 k
-             gmp                                 x86_64  1:6.3.0-1.fc41             rawhide  317 k
-             gnupg2                              x86_64  2.4.5-1.fc41               rawhide  2.7 M
-             gnutls                              x86_64  3.8.4-1.fc41               rawhide  1.1 M
-             libassuan                           x86_64  2.5.7-1.fc41               rawhide   67 k
-             libblkid                            x86_64  2.40-0.12.fc41             rawhide  125 k
-             libcurl                             x86_64  8.6.0-7.fc41               rawhide  345 k
-             libdnf                              x86_64  0.73.1-1.fc41              rawhide  697 k
-             libeconf                            x86_64  0.6.2-1.fc41               rawhide   32 k
-             libffi                              x86_64  3.4.6-1.fc41               rawhide   40 k
-             libgcc                              x86_64  14.0.1-0.13.fc41           rawhide  123 k
-             libgcrypt                           x86_64  1.10.3-4.fc41              rawhide  504 k
-             libgomp                             x86_64  14.0.1-0.13.fc41           rawhide  344 k
-             libgpg-error                        x86_64  1.48-1.fc41                rawhide  232 k
-             libksba                             x86_64  1.6.6-1.fc41               rawhide  159 k
-             libmodulemd                         x86_64  2.15.0-9.fc41              rawhide  233 k
-             libmount                            x86_64  2.40-0.12.fc41             rawhide  155 k
-             libnghttp2                          x86_64  1.60.0-2.fc41              rawhide   76 k
-             librepo                             x86_64  1.17.1-1.fc41              rawhide   99 k
-             libreport-filesystem                noarch  2.17.15-1.fc41             rawhide   14 k
-             libsmartcols                        x86_64  2.40-0.12.fc41             rawhide   84 k
-             libssh                              x86_64  0.10.6-6.fc41              rawhide  212 k
-             libssh-config                       noarch  0.10.6-6.fc41              rawhide  9.1 k
-             libstdc++                           x86_64  14.0.1-0.13.fc41           rawhide  881 k
-             libtirpc                            x86_64  1.3.4-1.rc3.fc41           rawhide   92 k
-             libunistring                        x86_64  1.1-7.fc41                 rawhide  545 k
-             libuuid                             x86_64  2.40-0.12.fc41             rawhide   29 k
-             libxml2                             x86_64  2.12.6-1.fc41              rawhide  686 k
-             libzstd                             x86_64  1.5.6-1.fc41               rawhide  309 k
-             npth                                x86_64  1.7-1.fc41                 rawhide   25 k
-             openssl-libs                        x86_64  1:3.2.1-3.fc41             rawhide  2.3 M
-             pcre2                               x86_64  10.43-1.fc41               rawhide  242 k
-             pcre2-syntax                        noarch  10.43-1.fc41               rawhide  149 k
-             python-pip-wheel                    noarch  24.0-2.fc41                rawhide  1.5 M
-             python3                             x86_64  3.12.2-3.fc41              rawhide   27 k
-             python3-dnf                         noarch  4.19.2-1.fc41              rawhide  594 k
-             python3-hawkey                      x86_64  0.73.1-1.fc41              rawhide  105 k
-             python3-libdnf                      x86_64  0.73.1-1.fc41              rawhide  847 k
-             python3-libs                        x86_64  3.12.2-3.fc41              rawhide  9.1 M
-             shadow-utils                        x86_64  2:4.15.1-2.fc41            rawhide  1.3 M
-             sqlite-libs                         x86_64  3.45.2-1.fc41              rawhide  706 k
-             systemd-libs                        x86_64  255.4-1.fc41               rawhide  708 k
-             tzdata                              noarch  2024a-4.fc41               rawhide  716 k
-             util-linux-core                     x86_64  2.40-0.12.fc41             rawhide  537 k
-             vim-data                            noarch  2:9.1.181-1.fc41           rawhide   23 k
-             vim-minimal                         x86_64  2:9.1.181-1.fc41           rawhide  807 k
-             xz-libs                             x86_64  1:5.4.6-3.fc41             rawhide  110 k
-             yum                                 noarch  4.19.2-1.fc41              rawhide   37 k
-
-            Transaction Summary
-            ======================================================================================
-            Upgrade  65 Packages
-
-            Total download size: 38 M
-            Downloading Packages:
-            (1/65): audit-libs-4.0.1-1.fc41.x86_64.rpm      136 kB/s | 126 kB     00:00
-            (2/65): authselect-1.5.0-5.fc41.x86_64.rpm      153 kB/s | 146 kB     00:00
-            (3/65): crypto-policies-20240320-1.git58e3d95.f 623 kB/s |  91 kB     00:00
-            (4/65): authselect-libs-1.5.0-5.fc41.x86_64.rpm 199 kB/s | 219 kB     00:01
-            [MIRROR] dnf-4.19.2-1.fc41.noarch.rpm: Status code: 404 for http://mirror.math.princeton.edu/pub/fedora/linux/development/rawhide/Everything/x86_64/os/Packages/d/dnf-4.19.2-1.fc41.noarch.rpm (IP: 128.112.18.21)
-            [MIRROR] dnf-data-4.19.2-1.fc41.noarch.rpm: Status code: 404 for http://mirror.math.princeton.edu/pub/fedora/linux/development/rawhide/Everything/x86_64/os/Packages/d/dnf-data-4.19.2-1.fc41.noarch.rpm (IP: 128.112.18.21)
-            (5/65): curl-8.6.0-7.fc41.x86_64.rpm            919 kB/s | 301 kB     00:00
-            (6/65): elfutils-default-yama-scope-0.191-5.fc4 105 kB/s |  13 kB     00:00
-            (7/65): elfutils-libelf-0.191-5.fc41.x86_64.rpm 739 kB/s | 209 kB     00:00
-            (8/65): dnf-data-4.19.2-1.fc41.noarch.rpm        51 kB/s |  40 kB     00:00
-            (9/65): elfutils-libs-0.191-5.fc41.x86_64.rpm   980 kB/s | 258 kB     00:00
-            (10/65): expat-2.6.2-1.fc41.x86_64.rpm          787 kB/s | 113 kB     00:00
-            (11/65): fedora-release-common-41-0.6.noarch.rp 165 kB/s |  21 kB     00:00
-            (12/65): fedora-release-container-41-0.6.noarch  87 kB/s |  11 kB     00:00
-            (13/65): fedora-release-identity-container-41-0  77 kB/s |  12 kB     00:00
-            (14/65): dnf-4.19.2-1.fc41.noarch.rpm           402 kB/s | 503 kB     00:01
-            (15/65): glib2-2.80.0-1.fc41.x86_64.rpm         4.8 MB/s | 3.0 MB     00:00
-            (16/65): glibc-minimal-langpack-2.39.9000-10.fc 783 kB/s | 106 kB     00:00
-            (17/65): gmp-6.3.0-1.fc41.x86_64.rpm            1.7 MB/s | 317 kB     00:00
-            (18/65): glibc-common-2.39.9000-10.fc41.x86_64. 507 kB/s | 393 kB     00:00
-            (19/65): gnupg2-2.4.5-1.fc41.x86_64.rpm         8.2 MB/s | 2.7 MB     00:00
-            (20/65): libassuan-2.5.7-1.fc41.x86_64.rpm      458 kB/s |  67 kB     00:00
-            (21/65): libblkid-2.40-0.12.fc41.x86_64.rpm     687 kB/s | 125 kB     00:00
-            (22/65): glibc-2.39.9000-10.fc41.x86_64.rpm     1.0 MB/s | 2.2 MB     00:02
-            [MIRROR] libdnf-0.73.1-1.fc41.x86_64.rpm: Status code: 404 for http://mirror.math.princeton.edu/pub/fedora/linux/development/rawhide/Everything/x86_64/os/Packages/l/libdnf-0.73.1-1.fc41.x86_64.rpm (IP: 128.112.18.21)
-            (23/65): gnutls-3.8.4-1.fc41.x86_64.rpm         668 kB/s | 1.1 MB     00:01
-            (24/65): libeconf-0.6.2-1.fc41.x86_64.rpm       249 kB/s |  32 kB     00:00
-            (25/65): libdnf-0.73.1-1.fc41.x86_64.rpm        1.6 MB/s | 697 kB     00:00
-            (26/65): libffi-3.4.6-1.fc41.x86_64.rpm         205 kB/s |  40 kB     00:00
-            (27/65): libgcc-14.0.1-0.13.fc41.x86_64.rpm     391 kB/s | 123 kB     00:00
-            (28/65): libgomp-14.0.1-0.13.fc41.x86_64.rpm    642 kB/s | 344 kB     00:00
-            (29/65): libgcrypt-1.10.3-4.fc41.x86_64.rpm     613 kB/s | 504 kB     00:00
-            (30/65): libgpg-error-1.48-1.fc41.x86_64.rpm    579 kB/s | 232 kB     00:00
-            (31/65): libksba-1.6.6-1.fc41.x86_64.rpm        580 kB/s | 159 kB     00:00
-            (32/65): libcurl-8.6.0-7.fc41.x86_64.rpm        140 kB/s | 345 kB     00:02
-            (33/65): libmodulemd-2.15.0-9.fc41.x86_64.rpm   406 kB/s | 233 kB     00:00
-            (34/65): libmount-2.40-0.12.fc41.x86_64.rpm     271 kB/s | 155 kB     00:00
-            (35/65): libreport-filesystem-2.17.15-1.fc41.no  82 kB/s |  14 kB     00:00
-            (36/65): librepo-1.17.1-1.fc41.x86_64.rpm       501 kB/s |  99 kB     00:00
-            (37/65): libsmartcols-2.40-0.12.fc41.x86_64.rpm 323 kB/s |  84 kB     00:00
-            (38/65): libssh-0.10.6-6.fc41.x86_64.rpm        744 kB/s | 212 kB     00:00
-            (39/65): libssh-config-0.10.6-6.fc41.noarch.rpm  74 kB/s | 9.1 kB     00:00
-            (40/65): libtirpc-1.3.4-1.rc3.fc41.x86_64.rpm   357 kB/s |  92 kB     00:00
-            (41/65): libstdc++-14.0.1-0.13.fc41.x86_64.rpm  837 kB/s | 881 kB     00:01
-            (42/65): libnghttp2-1.60.0-2.fc41.x86_64.rpm     35 kB/s |  76 kB     00:02
-            (43/65): libuuid-2.40-0.12.fc41.x86_64.rpm      208 kB/s |  29 kB     00:00
-            (44/65): libunistring-1.1-7.fc41.x86_64.rpm     534 kB/s | 545 kB     00:01
-            (45/65): npth-1.7-1.fc41.x86_64.rpm             187 kB/s |  25 kB     00:00
-            (46/65): libzstd-1.5.6-1.fc41.x86_64.rpm        767 kB/s | 309 kB     00:00
-            (47/65): pcre2-10.43-1.fc41.x86_64.rpm          611 kB/s | 242 kB     00:00
-            (48/65): pcre2-syntax-10.43-1.fc41.noarch.rpm   386 kB/s | 149 kB     00:00
-            (49/65): python-pip-wheel-24.0-2.fc41.noarch.rp 640 kB/s | 1.5 MB     00:02
-            (50/65): python3-3.12.2-3.fc41.x86_64.rpm       203 kB/s |  27 kB     00:00
-            [MIRROR] python3-dnf-4.19.2-1.fc41.noarch.rpm: Status code: 404 for http://mirror.math.princeton.edu/pub/fedora/linux/development/rawhide/Everything/x86_64/os/Packages/p/python3-dnf-4.19.2-1.fc41.noarch.rpm (IP: 128.112.18.21)
-            (51/65): libxml2-2.12.6-1.fc41.x86_64.rpm       168 kB/s | 686 kB     00:04
-            (52/65): openssl-libs-3.2.1-3.fc41.x86_64.rpm   554 kB/s | 2.3 MB     00:04
-            (53/65): python3-hawkey-0.73.1-1.fc41.x86_64.rp 130 kB/s | 105 kB     00:00
-            (54/65): python3-dnf-4.19.2-1.fc41.noarch.rpm   425 kB/s | 594 kB     00:01
-            (55/65): shadow-utils-4.15.1-2.fc41.x86_64.rpm  3.5 MB/s | 1.3 MB     00:00
-            (56/65): sqlite-libs-3.45.2-1.fc41.x86_64.rpm   2.8 MB/s | 706 kB     00:00
-            (57/65): python3-libdnf-0.73.1-1.fc41.x86_64.rp 678 kB/s | 847 kB     00:01
-            (58/65): systemd-libs-255.4-1.fc41.x86_64.rpm   2.9 MB/s | 708 kB     00:00
-            (59/65): util-linux-core-2.40-0.12.fc41.x86_64. 3.0 MB/s | 537 kB     00:00
-            (60/65): tzdata-2024a-4.fc41.noarch.rpm         1.5 MB/s | 716 kB     00:00
-            (61/65): vim-data-9.1.181-1.fc41.noarch.rpm     125 kB/s |  23 kB     00:00
-            (62/65): xz-libs-5.4.6-3.fc41.x86_64.rpm        530 kB/s | 110 kB     00:00
-            (63/65): yum-4.19.2-1.fc41.noarch.rpm           215 kB/s |  37 kB     00:00
-            (64/65): python3-libs-3.12.2-3.fc41.x86_64.rpm  3.5 MB/s | 9.1 MB     00:02
-            (65/65): vim-minimal-9.1.181-1.fc41.x86_64.rpm  218 kB/s | 807 kB     00:03
-            --------------------------------------------------------------------------------
-            Total                                           2.0 MB/s |  38 MB     00:19
-            Running transaction check
-            Transaction check succeeded.
-            Running transaction test
-            Transaction test succeeded.
-            Running transaction
-              Preparing        :                                                        1/1
-              Upgrading        : libgcc-14.0.1-0.13.fc41.x86_64                       1/130
-              Running scriptlet: libgcc-14.0.1-0.13.fc41.x86_64                       1/130
-              Upgrading        : tzdata-2024a-4.fc41.noarch                           2/130
-              Upgrading        : crypto-policies-20240320-1.git58e3d95.fc41.noarc     3/130
-              Running scriptlet: crypto-policies-20240320-1.git58e3d95.fc41.noarc     3/130
-              Upgrading        : glibc-common-2.39.9000-10.fc41.x86_64                4/130
-              Upgrading        : glibc-minimal-langpack-2.39.9000-10.fc41.x86_64      5/130
-              Running scriptlet: glibc-2.39.9000-10.fc41.x86_64                       6/130
-              Upgrading        : glibc-2.39.9000-10.fc41.x86_64                       6/130
-              Running scriptlet: glibc-2.39.9000-10.fc41.x86_64                       6/130
-              Upgrading        : libgpg-error-1.48-1.fc41.x86_64                      7/130
-              Upgrading        : libuuid-2.40-0.12.fc41.x86_64                        8/130
-              Upgrading        : openssl-libs-1:3.2.1-3.fc41.x86_64                   9/130
-              Upgrading        : xz-libs-1:5.4.6-3.fc41.x86_64                       10/130
-              Upgrading        : libsmartcols-2.40-0.12.fc41.x86_64                  11/130
-              Upgrading        : libstdc++-14.0.1-0.13.fc41.x86_64                   12/130
-              Upgrading        : libzstd-1.5.6-1.fc41.x86_64                         13/130
-              Upgrading        : sqlite-libs-3.45.2-1.fc41.x86_64                    14/130
-              Upgrading        : libblkid-2.40-0.12.fc41.x86_64                      15/130
-              Upgrading        : libmount-2.40-0.12.fc41.x86_64                      16/130
-              Upgrading        : libffi-3.4.6-1.fc41.x86_64                          17/130
-              Upgrading        : fedora-release-identity-container-41-0.6.noarch     18/130
-              Upgrading        : fedora-release-container-41-0.6.noarch              19/130
-              Upgrading        : fedora-release-common-41-0.6.noarch                 20/130
-              Upgrading        : elfutils-libelf-0.191-5.fc41.x86_64                 21/130
-              Upgrading        : systemd-libs-255.4-1.fc41.x86_64                    22/130
-              Upgrading        : libxml2-2.12.6-1.fc41.x86_64                        23/130
-              Upgrading        : libassuan-2.5.7-1.fc41.x86_64                       24/130
-              Upgrading        : libgcrypt-1.10.3-4.fc41.x86_64                      25/130
-              Upgrading        : libksba-1.6.6-1.fc41.x86_64                         26/130
-              Upgrading        : audit-libs-4.0.1-1.fc41.x86_64                      27/130
-              Upgrading        : authselect-libs-1.5.0-5.fc41.x86_64                 28/130
-              Upgrading        : expat-2.6.2-1.fc41.x86_64                           29/130
-              Upgrading        : gmp-1:6.3.0-1.fc41.x86_64                           30/130
-              Upgrading        : libeconf-0.6.2-1.fc41.x86_64                        31/130
-              Upgrading        : libnghttp2-1.60.0-2.fc41.x86_64                     32/130
-              Upgrading        : libtirpc-1.3.4-1.rc3.fc41.x86_64                    33/130
-              Upgrading        : libunistring-1.1-7.fc41.x86_64                      34/130
-              Upgrading        : gnutls-3.8.4-1.fc41.x86_64                          35/130
-              Upgrading        : npth-1.7-1.fc41.x86_64                              36/130
-              Upgrading        : vim-data-2:9.1.181-1.fc41.noarch                    37/130
-              Upgrading        : python-pip-wheel-24.0-2.fc41.noarch                 38/130
-              Upgrading        : python3-3.12.2-3.fc41.x86_64                        39/130
-              Upgrading        : python3-libs-3.12.2-3.fc41.x86_64                   40/130
-              Upgrading        : pcre2-syntax-10.43-1.fc41.noarch                    41/130
-              Upgrading        : pcre2-10.43-1.fc41.x86_64                           42/130
-              Upgrading        : glib2-2.80.0-1.fc41.x86_64                          43/130
-              Upgrading        : libmodulemd-2.15.0-9.fc41.x86_64                    44/130
-              Upgrading        : libssh-config-0.10.6-6.fc41.noarch                  45/130
-              Upgrading        : libssh-0.10.6-6.fc41.x86_64                         46/130
-              Upgrading        : libcurl-8.6.0-7.fc41.x86_64                         47/130
-              Upgrading        : librepo-1.17.1-1.fc41.x86_64                        48/130
-              Upgrading        : libdnf-0.73.1-1.fc41.x86_64                         49/130
-              Upgrading        : python3-libdnf-0.73.1-1.fc41.x86_64                 50/130
-              Upgrading        : python3-hawkey-0.73.1-1.fc41.x86_64                 51/130
-              Upgrading        : libreport-filesystem-2.17.15-1.fc41.noarch          52/130
-              Upgrading        : dnf-data-4.19.2-1.fc41.noarch                       53/130
-              Upgrading        : python3-dnf-4.19.2-1.fc41.noarch                    54/130
-              Upgrading        : dnf-4.19.2-1.fc41.noarch                            55/130
-              Running scriptlet: dnf-4.19.2-1.fc41.noarch                            55/130
-              Upgrading        : elfutils-default-yama-scope-0.191-5.fc41.noarch     56/130
-              Running scriptlet: elfutils-default-yama-scope-0.191-5.fc41.noarch     56/130
-              Upgrading        : elfutils-libs-0.191-5.fc41.x86_64                   57/130
-              Upgrading        : yum-4.19.2-1.fc41.noarch                            58/130
-              Upgrading        : curl-8.6.0-7.fc41.x86_64                            59/130
-              Upgrading        : vim-minimal-2:9.1.181-1.fc41.x86_64                 60/130
-              Upgrading        : gnupg2-2.4.5-1.fc41.x86_64                          61/130
-              Upgrading        : shadow-utils-2:4.15.1-2.fc41.x86_64                 62/130
-              Upgrading        : authselect-1.5.0-5.fc41.x86_64                      63/130
-              Upgrading        : util-linux-core-2.40-0.12.fc41.x86_64               64/130
-              Upgrading        : libgomp-14.0.1-0.13.fc41.x86_64                     65/130
-              Cleanup          : util-linux-core-2.40-0.9.rc1.fc41.x86_64            66/130
-              Cleanup          : systemd-libs-255.3-1.fc40.x86_64                    67/130
-              Cleanup          : gnupg2-2.4.4-1.fc40.x86_64                          68/130
-              Cleanup          : elfutils-libs-0.190-6.fc40.x86_64                   69/130
-              Cleanup          : shadow-utils-2:4.14.0-6.fc40.x86_64                 70/130
-              Cleanup          : vim-minimal-2:9.1.113-1.fc41.x86_64                 71/130
-              Running scriptlet: authselect-1.5.0-3.fc40.x86_64                      72/130
-              Cleanup          : authselect-1.5.0-3.fc40.x86_64                      72/130
-              Cleanup          : curl-8.6.0-6.fc40.x86_64                            73/130
-              Cleanup          : fedora-release-common-41-0.1.noarch                 74/130
-              Cleanup          : libgcrypt-1.10.3-3.fc40.x86_64                      75/130
-              Cleanup          : elfutils-libelf-0.190-6.fc40.x86_64                 76/130
-              Cleanup          : libassuan-2.5.6-4.fc40.x86_64                       77/130
-              Cleanup          : authselect-libs-1.5.0-3.fc40.x86_64                 78/130
-              Cleanup          : audit-libs-4.0-8.fc40.x86_64                        79/130
-              Cleanup          : libksba-1.6.5-3.fc40.x86_64                         80/130
-              Cleanup          : libgpg-error-1.47-4.fc40.x86_64                     81/130
-              Cleanup          : libeconf-0.5.2-3.fc40.x86_64                        82/130
-              Cleanup          : libgomp-14.0.1-0.6.fc40.x86_64                      83/130
-              Cleanup          : fedora-release-container-41-0.1.noarch              84/130
-              Cleanup          : yum-4.19.0-1.fc40.noarch                            85/130
-              Cleanup          : libzstd-1.5.5-5.fc40.x86_64                         86/130
-              Cleanup          : npth-1.6-18.fc40.x86_64                             87/130
-              Running scriptlet: dnf-4.19.0-1.fc40.noarch                            88/130
-              Cleanup          : dnf-4.19.0-1.fc40.noarch                            88/130
-              Running scriptlet: dnf-4.19.0-1.fc40.noarch                            88/130
-              Cleanup          : python3-dnf-4.19.0-1.fc40.noarch                    89/130
-              Cleanup          : dnf-data-4.19.0-1.fc40.noarch                       90/130
-              Cleanup          : libreport-filesystem-2.17.14-1.fc40.noarch          91/130
-              Cleanup          : fedora-release-identity-container-41-0.1.noarch     92/130
-              Cleanup          : vim-data-2:9.1.113-1.fc41.noarch                    93/130
-              Cleanup          : elfutils-default-yama-scope-0.190-6.fc40.noarch     94/130
-              Cleanup          : python3-hawkey-0.73.0-1.fc40.x86_64                 95/130
-              Cleanup          : python3-libdnf-0.73.0-1.fc40.x86_64                 96/130
-              Cleanup          : python3-libs-3.12.2-1.fc40.x86_64                   97/130
-              Cleanup          : python3-3.12.2-1.fc40.x86_64                        98/130
-              Cleanup          : libdnf-0.73.0-1.fc40.x86_64                         99/130
-              Cleanup          : python-pip-wheel-23.3.2-1.fc40.noarch              100/130
-              Cleanup          : libstdc++-14.0.1-0.6.fc40.x86_64                   101/130
-              Cleanup          : librepo-1.17.0-3.fc40.x86_64                       102/130
-              Cleanup          : libcurl-8.6.0-6.fc40.x86_64                        103/130
-              Cleanup          : libxml2-2.12.5-1.fc40.x86_64                       104/130
-              Cleanup          : libssh-0.10.6-4.fc40.x86_64                        105/130
-              Cleanup          : openssl-libs-1:3.2.1-2.fc40.x86_64                 106/130
-              Cleanup          : sqlite-libs-3.45.1-2.fc40.x86_64                   107/130
-              Cleanup          : libtirpc-1.3.4-1.rc2.fc40.2.x86_64                 108/130
-              Cleanup          : libmodulemd-2.15.0-8.fc40.x86_64                   109/130
-              Cleanup          : glib2-2.79.1-1.fc40.x86_64                         110/130
-              Cleanup          : libmount-2.40-0.9.rc1.fc41.x86_64                  111/130
-              Cleanup          : gnutls-3.8.3-2.fc40.x86_64                         112/130
-              Cleanup          : libblkid-2.40-0.9.rc1.fc41.x86_64                  113/130
-              Cleanup          : libuuid-2.40-0.9.rc1.fc41.x86_64                   114/130
-              Cleanup          : xz-libs-5.4.6-1.fc40.x86_64                        115/130
-              Cleanup          : libsmartcols-2.40-0.9.rc1.fc41.x86_64              116/130
-              Cleanup          : expat-2.6.0-1.fc41.x86_64                          117/130
-              Cleanup          : gmp-1:6.2.1-8.fc40.x86_64                          118/130
-              Cleanup          : libunistring-1.1-7.fc40.x86_64                     119/130
-              Cleanup          : libffi-3.4.4-7.fc40.x86_64                         120/130
-              Cleanup          : pcre2-10.42-2.fc40.2.x86_64                        121/130
-              Cleanup          : libnghttp2-1.59.0-2.fc40.x86_64                    122/130
-              Cleanup          : pcre2-syntax-10.42-2.fc40.2.noarch                 123/130
-              Cleanup          : crypto-policies-20240201-1.git9f501f3.fc40.noarc   124/130
-              Cleanup          : libssh-config-0.10.6-4.fc40.noarch                 125/130
-              Cleanup          : glibc-2.39.9000-1.fc41.x86_64                      126/130
-              Cleanup          : glibc-minimal-langpack-2.39.9000-1.fc41.x86_64     127/130
-              Cleanup          : glibc-common-2.39.9000-1.fc41.x86_64               128/130
-              Cleanup          : tzdata-2024a-2.fc40.noarch                         129/130
-              Cleanup          : libgcc-14.0.1-0.6.fc40.x86_64                      130/130
-              Running scriptlet: libgcc-14.0.1-0.6.fc40.x86_64                      130/130
-              Running scriptlet: authselect-libs-1.5.0-5.fc41.x86_64                130/130
-              Running scriptlet: libgcc-14.0.1-0.6.fc40.x86_64                      130/130
-
-            Upgraded:
-              audit-libs-4.0.1-1.fc41.x86_64
-              authselect-1.5.0-5.fc41.x86_64
-              authselect-libs-1.5.0-5.fc41.x86_64
-              crypto-policies-20240320-1.git58e3d95.fc41.noarch
-              curl-8.6.0-7.fc41.x86_64
-              dnf-4.19.2-1.fc41.noarch
-              dnf-data-4.19.2-1.fc41.noarch
-              elfutils-default-yama-scope-0.191-5.fc41.noarch
-              elfutils-libelf-0.191-5.fc41.x86_64
-              elfutils-libs-0.191-5.fc41.x86_64
-              expat-2.6.2-1.fc41.x86_64
-              fedora-release-common-41-0.6.noarch
-              fedora-release-container-41-0.6.noarch
-              fedora-release-identity-container-41-0.6.noarch
-              glib2-2.80.0-1.fc41.x86_64
-              glibc-2.39.9000-10.fc41.x86_64
-              glibc-common-2.39.9000-10.fc41.x86_64
-              glibc-minimal-langpack-2.39.9000-10.fc41.x86_64
-              gmp-1:6.3.0-1.fc41.x86_64
-              gnupg2-2.4.5-1.fc41.x86_64
-              gnutls-3.8.4-1.fc41.x86_64
-              libassuan-2.5.7-1.fc41.x86_64
-              libblkid-2.40-0.12.fc41.x86_64
-              libcurl-8.6.0-7.fc41.x86_64
-              libdnf-0.73.1-1.fc41.x86_64
-              libeconf-0.6.2-1.fc41.x86_64
-              libffi-3.4.6-1.fc41.x86_64
-              libgcc-14.0.1-0.13.fc41.x86_64
-              libgcrypt-1.10.3-4.fc41.x86_64
-              libgomp-14.0.1-0.13.fc41.x86_64
-              libgpg-error-1.48-1.fc41.x86_64
-              libksba-1.6.6-1.fc41.x86_64
-              libmodulemd-2.15.0-9.fc41.x86_64
-              libmount-2.40-0.12.fc41.x86_64
-              libnghttp2-1.60.0-2.fc41.x86_64
-              librepo-1.17.1-1.fc41.x86_64
-              libreport-filesystem-2.17.15-1.fc41.noarch
-              libsmartcols-2.40-0.12.fc41.x86_64
-              libssh-0.10.6-6.fc41.x86_64
-              libssh-config-0.10.6-6.fc41.noarch
-              libstdc++-14.0.1-0.13.fc41.x86_64
-              libtirpc-1.3.4-1.rc3.fc41.x86_64
-              libunistring-1.1-7.fc41.x86_64
-              libuuid-2.40-0.12.fc41.x86_64
-              libxml2-2.12.6-1.fc41.x86_64
-              libzstd-1.5.6-1.fc41.x86_64
-              npth-1.7-1.fc41.x86_64
-              openssl-libs-1:3.2.1-3.fc41.x86_64
-              pcre2-10.43-1.fc41.x86_64
-              pcre2-syntax-10.43-1.fc41.noarch
-              python-pip-wheel-24.0-2.fc41.noarch
-              python3-3.12.2-3.fc41.x86_64
-              python3-dnf-4.19.2-1.fc41.noarch
-              python3-hawkey-0.73.1-1.fc41.x86_64
-              python3-libdnf-0.73.1-1.fc41.x86_64
-              python3-libs-3.12.2-3.fc41.x86_64
-              shadow-utils-2:4.15.1-2.fc41.x86_64
-              sqlite-libs-3.45.2-1.fc41.x86_64
-              systemd-libs-255.4-1.fc41.x86_64
-              tzdata-2024a-4.fc41.noarch
-              util-linux-core-2.40-0.12.fc41.x86_64
-              vim-data-2:9.1.181-1.fc41.noarch
-              vim-minimal-2:9.1.181-1.fc41.x86_64
-              xz-libs-1:5.4.6-3.fc41.x86_64
-              yum-4.19.2-1.fc41.noarch
-
-            Complete!
-            --> 43089713ea9
-            STEP 3/3: LABEL velocity.config.system="x86_64"     velocity.config.backend="podman"     velocity.config.distro="fedora"     velocity.image.fedora__41="1ad7926d7e542fa521fe4a2eca54aa73caea82958b1f07adf04728b5762063ac"
-            COMMIT localhost/wmrxxohy:latest
-            --> 49321c240b5
-            Successfully tagged localhost/wmrxxohy:latest
-            49321c240b522a0d66cd30b62addc99e87b5861e2e6c27f6d0136968c73be5aa
-    ==> wmrxxohy: IMAGE localhost/wmrxxohy:latest (fedora@=41) BUILT [0:01:02]
-
-    ==> bdvdbcor: BUILD hello-world@=1.0 ...
-    ==> bdvdbcor: COPYING FILES ...
-            FILE: /home/xjv/tmp/hello-world/1.0/x86_64/hello_world.py -> /tmp/velocity/build/bdvdbcor/hello_world.py
-    ==> bdvdbcor: GENERATING SCRIPT ...
-            SCRIPT: /tmp/velocity/build/bdvdbcor/script
-            FROM localhost/wmrxxohy:latest
-
-            COPY hello_world.py /hello_world.py
-
-            LABEL velocity.image.hello-world__1.0="1b080f458c34ae2759d1eb3e8464d3d508e3bcb981a476f70709b0f20b6218bb"
-
-            ENTRYPOINT ['/hello_world.py']
-
-    ==> bdvdbcor: BUILDING ...
-            #!/usr/bin/env bash
-            podman build -f /tmp/velocity/build/bdvdbcor/script -t localhost/hello-world__1.0__x86_64__fedora:latest .;
-            STEP 1/4: FROM localhost/wmrxxohy:latest
-            STEP 2/4: COPY hello_world.py /hello_world.py
-            --> fa1896e8689
-            STEP 3/4: LABEL velocity.image.hello-world__1.0="1b080f458c34ae2759d1eb3e8464d3d508e3bcb981a476f70709b0f20b6218bb"
-            --> d58637575df
-            STEP 4/4: ENTRYPOINT ['/hello_world.py']
-            COMMIT localhost/hello-world__1.0__x86_64__fedora:latest
-            --> 21211d9de40
-            Successfully tagged localhost/hello-world__1.0__x86_64__fedora:latest
-            21211d9de40aa6c0cb6b625e6f4fed265c88f9a4be09c4edcd93a78360580ecf
-    ==> bdvdbcor: IMAGE localhost/hello-world__1.0__x86_64__fedora:latest (hello-world@=1.0) BUILT [0:00:03]
+        fedora@41-8a9a360
+        hello-world@1.0-de9c02b
+
+    ==> 8a9a360: BUILD fedora@41 ...
+    ==> 8a9a360: GENERATING SCRIPT ...
+        SCRIPT: /tmp/velocity/build/fedora-41-8a9a360/script
+        Bootstrap: docker
+        From: docker.io/fedora:41
+
+        %post
+        dnf -y upgrade
+        dnf clean all
+    ==> 8a9a360: BUILDING ...
+        #!/usr/bin/env bash
+        apptainer build --disable-cache /tmp/velocity/build/fedora-41-8a9a360/8a9a360.sif /tmp/velocity/build/fedora-41-8a9a360/script;
+        Updating and loading repositories:
+         Fedora 41 openh264 (From Cisco) - x86_ 100% |   6.5 KiB/s |   4.8 KiB |  00m01s
+         Fedora 41 - x86_64 - Test Updates      100% |   1.8 MiB/s |   3.4 MiB |  00m02s
+         Fedora 41 - x86_64                     100% |  13.9 MiB/s |  35.9 MiB |  00m03s
+         Fedora 41 - x86_64 - Updates           100% |  50.3 KiB/s |  31.9 KiB |  00m01s
+        Repositories loaded.
+        Package                     Arch   Version        Repository                            Size
+        Upgrading:
+         libgcc                     x86_64 14.2.1-3.fc41  updates-testing                  274.6 KiB
+           replacing libgcc         x86_64 14.2.1-1.fc41  34086d2996104518800c8d7dcc6139a1 274.6 KiB
+         libgomp                    x86_64 14.2.1-3.fc41  updates-testing                  523.5 KiB
+           replacing libgomp        x86_64 14.2.1-1.fc41  34086d2996104518800c8d7dcc6139a1 523.4 KiB
+         libstdc++                  x86_64 14.2.1-3.fc41  updates-testing                    2.8 MiB
+           replacing libstdc++      x86_64 14.2.1-1.fc41  34086d2996104518800c8d7dcc6139a1   2.8 MiB
+         openssl-libs               x86_64 1:3.2.2-7.fc41 updates-testing                    7.8 MiB
+           replacing openssl-libs   x86_64 1:3.2.2-5.fc41 34086d2996104518800c8d7dcc6139a1   7.8 MiB
+         rpm                        x86_64 4.19.94-1.fc41 updates-testing                    3.1 MiB
+           replacing rpm            x86_64 4.19.92-6.fc41 34086d2996104518800c8d7dcc6139a1   3.1 MiB
+         rpm-build-libs             x86_64 4.19.94-1.fc41 updates-testing                  206.7 KiB
+           replacing rpm-build-libs x86_64 4.19.92-6.fc41 34086d2996104518800c8d7dcc6139a1 206.7 KiB
+         rpm-libs                   x86_64 4.19.94-1.fc41 updates-testing                  721.9 KiB
+           replacing rpm-libs       x86_64 4.19.92-6.fc41 34086d2996104518800c8d7dcc6139a1 721.9 KiB
+         systemd-libs               x86_64 256.6-1.fc41   updates-testing                    2.0 MiB
+           replacing systemd-libs   x86_64 256.5-1.fc41   34086d2996104518800c8d7dcc6139a1   2.0 MiB
+         zlib-ng-compat             x86_64 2.1.7-3.fc41   updates-testing                  134.0 KiB
+           replacing zlib-ng-compat x86_64 2.1.7-2.fc41   34086d2996104518800c8d7dcc6139a1 134.0 KiB
+
+        Transaction Summary:
+         Upgrading:         9 packages
+         Replacing:         9 packages
+
+        Total size of inbound packages is 5 MiB. Need to download 5 MiB.
+        After this operation 2 KiB will be used (install 17 MiB, remove 17 MiB).
+        [1/9] libgcc-0:14.2.1-3.fc41.x86_64     100% | 132.2 KiB/s | 133.3 KiB |  00m01s
+        [2/9] libstdc++-0:14.2.1-3.fc41.x86_64  100% | 583.3 KiB/s | 887.8 KiB |  00m02s
+        [3/9] libgomp-0:14.2.1-3.fc41.x86_64    100% | 208.5 KiB/s | 354.1 KiB |  00m02s
+        [4/9] rpm-0:4.19.94-1.fc41.x86_64       100% |   1.6 MiB/s | 547.6 KiB |  00m00s
+        [5/9] rpm-build-libs-0:4.19.94-1.fc41.x 100% |   2.1 MiB/s |  99.1 KiB |  00m00s
+        [6/9] openssl-libs-1:3.2.2-7.fc41.x86_6 100% |   2.6 MiB/s |   2.3 MiB |  00m01s
+        [7/9] rpm-libs-0:4.19.94-1.fc41.x86_64  100% |   1.1 MiB/s | 309.5 KiB |  00m00s
+        [8/9] zlib-ng-compat-0:2.1.7-3.fc41.x86 100% |   1.0 MiB/s |  77.7 KiB |  00m00s
+        [9/9] systemd-libs-0:256.6-1.fc41.x86_6 100% |   2.6 MiB/s | 730.9 KiB |  00m00s
+        --------------------------------------------------------------------------------
+        [9/9] Total                             100% |   2.2 MiB/s |   5.4 MiB |  00m02s
+        Running transaction
+        [ 1/20] Verify package files            100% | 750.0   B/s |   9.0   B |  00m00s
+        [ 2/20] Prepare transaction             100% |   1.6 KiB/s |  18.0   B |  00m00s
+        [ 3/20] Upgrading libgcc-0:14.2.1-3.fc4 100% |  14.2 MiB/s | 276.3 KiB |  00m00s
+        >>> Running post-install scriptlet: libgcc-0:14.2.1-3.fc41.x86_64
+        >>> Stop post-install scriptlet: libgcc-0:14.2.1-3.fc41.x86_64
+        [ 4/20] Upgrading zlib-ng-compat-0:2.1. 100% |  32.9 MiB/s | 134.8 KiB |  00m00s
+        [ 5/20] Upgrading rpm-libs-0:4.19.94-1. 100% | 117.7 MiB/s | 723.4 KiB |  00m00s
+        [ 6/20] Upgrading libgomp-0:14.2.1-3.fc 100% | 170.8 MiB/s | 524.8 KiB |  00m00s
+        [ 7/20] Upgrading rpm-build-libs-0:4.19 100% |  15.6 MiB/s | 207.5 KiB |  00m00s
+        >>> Running pre-install scriptlet: rpm-0:4.19.94-1.fc41.x86_64
+        >>> Stop pre-install scriptlet: rpm-0:4.19.94-1.fc41.x86_64
+        [ 8/20] Upgrading rpm-0:4.19.94-1.fc41. 100% | 104.3 MiB/s |   2.5 MiB |  00m00s
+        [ 9/20] Upgrading openssl-libs-1:3.2.2- 100% | 190.9 MiB/s |   7.8 MiB |  00m00s
+        [10/20] Upgrading libstdc++-0:14.2.1-3. 100% | 145.6 MiB/s |   2.8 MiB |  00m00s
+        [11/20] Upgrading systemd-libs-0:256.6- 100% | 135.3 MiB/s |   2.0 MiB |  00m00s
+        [12/20] Erasing rpm-build-libs-0:4.19.9 100% |   1.0 KiB/s |   5.0   B |  00m00s
+        [13/20] Erasing libstdc++-0:14.2.1-1.fc 100% |   6.1 KiB/s |  31.0   B |  00m00s
+        [14/20] Erasing systemd-libs-0:256.5-1. 100% |   2.4 KiB/s |  20.0   B |  00m00s
+        [15/20] Erasing rpm-0:4.19.92-6.fc41.x8 100% |  26.7 KiB/s | 273.0   B |  00m00s
+        [16/20] Erasing rpm-libs-0:4.19.92-6.fc 100% |   2.4 KiB/s |  10.0   B |  00m00s
+        [17/20] Erasing openssl-libs-1:3.2.2-5. 100% |   9.5 KiB/s |  39.0   B |  00m00s
+        [18/20] Erasing zlib-ng-compat-0:2.1.7- 100% |   1.2 KiB/s |   5.0   B |  00m00s
+        [19/20] Erasing libgcc-0:14.2.1-1.fc41. 100% | 647.0   B/s |  11.0   B |  00m00s
+        >>> Running post-uninstall scriptlet: libgcc-0:14.2.1-1.fc41.x86_64
+        >>> Stop post-uninstall scriptlet: libgcc-0:14.2.1-1.fc41.x86_64
+        [20/20] Erasing libgomp-0:14.2.1-1.fc41 100% |  43.0   B/s |   9.0   B |  00m00s
+        >>> Running post-transaction scriptlet: rpm-0:4.19.94-1.fc41.x86_64
+        >>> Stop post-transaction scriptlet: rpm-0:4.19.94-1.fc41.x86_64
+        >>> Running trigger-install scriptlet: glibc-common-0:2.40-3.fc41.x86_64
+        >>> Stop trigger-install scriptlet: glibc-common-0:2.40-3.fc41.x86_64
+        >>> Running trigger-post-uninstall scriptlet: glibc-common-0:2.40-3.fc41.x86_64
+        >>> Stop trigger-post-uninstall scriptlet: glibc-common-0:2.40-3.fc41.x86_64
+        Complete!
+        Removed 24 files, 13 directories. 0 errors occurred.
+    ==> 8a9a360: IMAGE /tmp/velocity/build/fedora-41-8a9a360/8a9a360.sif (fedora@41) BUILT [0:00:21]
+
+    ==> de9c02b: BUILD hello-world@1.0 ...
+    ==> de9c02b: COPYING FILES ...
+        FILE: /tmp/velocity/images/hello-world/files/hello_world.py -> /tmp/velocity/build/hello-world-1.0-de9c02b/hello_world.py
+    ==> de9c02b: GENERATING SCRIPT ...
+        SCRIPT: /tmp/velocity/build/hello-world-1.0-de9c02b/script
+        Bootstrap: localimage
+        From: /tmp/velocity/build/fedora-41-8a9a360/8a9a360.sif
+
+        %files
+        hello_world.py /hello_world
+
+        %post
+        dnf -y install python3
+        chmod +x /hello_world
+
+        %runscript
+        /hello_world
+    ==> de9c02b: BUILDING ...
+        #!/usr/bin/env bash
+        apptainer build --disable-cache /tmp/velocity/build/hello-world-1.0-de9c02b/de9c02b.sif /tmp/velocity/build/hello-world-1.0-de9c02b/script;
+        Updating and loading repositories:
+         Fedora 41 openh264 (From Cisco) - x86_ 100% |  11.1 KiB/s |   6.0 KiB |  00m01s
+         Fedora 41 - x86_64                     100% |  11.7 MiB/s |  35.4 MiB |  00m03s
+         Fedora 41 - x86_64 - Updates           100% |  50.1 KiB/s |  31.9 KiB |  00m01s
+         Fedora 41 - x86_64 - Test Updates      100% |   1.8 MiB/s |   2.1 MiB |  00m01s
+        Repositories loaded.
+        Package                     Arch   Version           Repository           Size
+        Installing:
+         python3                    x86_64 3.13.0~rc2-1.fc41 fedora           31.8 KiB
+        Installing dependencies:
+         expat                      x86_64 2.6.3-1.fc41      updates-testing 291.5 KiB
+         libb2                      x86_64 0.98.1-12.fc41    fedora           42.2 KiB
+         mpdecimal                  x86_64 2.5.1-16.fc41     fedora          204.9 KiB
+         python-pip-wheel           noarch 24.2-1.fc41       fedora            1.2 MiB
+         python3-libs               x86_64 3.13.0~rc2-1.fc41 fedora           40.3 MiB
+        Installing weak dependencies:
+         python-unversioned-command noarch 3.13.0~rc2-1.fc41 fedora           23.0   B
+
+        Transaction Summary:
+         Installing:        7 packages
+
+        Total size of inbound packages is 11 MiB. Need to download 11 MiB.
+        After this operation 42 MiB will be used (install 42 MiB, remove 0 B).
+        [1/7] libb2-0:0.98.1-12.fc41.x86_64     100% |  94.1 KiB/s |  25.7 KiB |  00m00s
+        [2/7] python3-0:3.13.0~rc2-1.fc41.x86_6 100% |  95.9 KiB/s |  27.4 KiB |  00m00s
+        [3/7] mpdecimal-0:2.5.1-16.fc41.x86_64  100% | 408.0 KiB/s |  89.0 KiB |  00m00s
+        [4/7] expat-0:2.6.3-1.fc41.x86_64       100% | 447.4 KiB/s | 114.1 KiB |  00m00s
+        [5/7] python-pip-wheel-0:24.2-1.fc41.no 100% |   2.5 MiB/s |   1.2 MiB |  00m00s
+        [6/7] python-unversioned-command-0:3.13 100% | 125.1 KiB/s |  10.5 KiB |  00m00s
+        [7/7] python3-libs-0:3.13.0~rc2-1.fc41. 100% |   8.1 MiB/s |   9.1 MiB |  00m01s
+        --------------------------------------------------------------------------------
+        [7/7] Total                             100% |   6.7 MiB/s |  10.6 MiB |  00m02s
+        Running transaction
+        [1/9] Verify package files              100% | 269.0   B/s |   7.0   B |  00m00s
+        [2/9] Prepare transaction               100% | 280.0   B/s |   7.0   B |  00m00s
+        [3/9] Installing expat-0:2.6.3-1.fc41.x 100% |  71.7 MiB/s | 293.6 KiB |  00m00s
+        [4/9] Installing python-pip-wheel-0:24. 100% | 310.4 MiB/s |   1.2 MiB |  00m00s
+        [5/9] Installing mpdecimal-0:2.5.1-16.f 100% |  50.3 MiB/s | 206.0 KiB |  00m00s
+        [6/9] Installing libb2-0:0.98.1-12.fc41 100% |   4.7 MiB/s |  43.3 KiB |  00m00s
+        [7/9] Installing python3-libs-0:3.13.0~ 100% | 139.9 MiB/s |  40.7 MiB |  00m00s
+        [8/9] Installing python3-0:3.13.0~rc2-1 100% |  10.9 MiB/s |  33.6 KiB |  00m00s
+        [9/9] Installing python-unversioned-com 100% |   1.8 KiB/s | 424.0   B |  00m00s
+        >>> Running trigger-install scriptlet: glibc-common-0:2.40-3.fc41.x86_64
+        >>> Stop trigger-install scriptlet: glibc-common-0:2.40-3.fc41.x86_64
+        Complete!
+    ==> de9c02b: IMAGE /tmp/velocity/build/hello-world-1.0-de9c02b/de9c02b.sif (hello-world@1.0) BUILT [0:00:14]
+
+    ==> BUILT: /tmp/velocity/hello-world-1.0_fedora-41__x86_64-fedora.sif
+
 
 Our hello-world image has been built!
 
 .. code-block:: bash
-    :emphasize-lines: 3
+    :emphasize-lines: 7
 
-    user@hostname:~$ podman image ls
-    REPOSITORY                                 TAG         IMAGE ID      CREATED        SIZE
-    localhost/hello-world__1.0__x86_64__fedora latest      db958bad4f40  4 minutes ago  337 MB
-    docker.io/library/fedora                   41          54d1373b70a2  5 weeks ago    180 MB
+    user@hostname:~$ ls
+    total 190972
+    drwxr-xr-x  4 xjv  users      4096 Sep 18 10:01 .
+    drwxrwxrwt 31 root root     131072 Sep 18 10:01 ..
+    drwxr-xr-x  4 xjv  users      4096 Sep 18 10:01 build
+    -rwxr-xr-x  1 xjv  users  66007040 Sep 18 09:42 fedora-38__x86_64-fedora.sif
+    -rwxr-xr-x  1 xjv  users 129392640 Sep 18 10:01 hello-world-1.0_fedora-41__x86_64-fedora.sif
+    drwxr-xr-x  4 xjv  users      4096 Sep 18 09:44 images
+
+
+Now you can run the image!
+
+.. code-block:: bash
 
+    user@hostname:~$ apptainer run hello-world-1.0_fedora-41__x86_64-fedora.sif
+    Hello, World!
diff --git a/docs/build/html/index.html b/docs/build/html/index.html
index 8e7130d..e4e71f5 100644
--- a/docs/build/html/index.html
+++ b/docs/build/html/index.html
@@ -4,7 +4,7 @@
   <meta charset="utf-8" /><meta name="viewport" content="width=device-width, initial-scale=1" />
 
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>Velocity Container Build System &mdash; Velocity  documentation</title>
+  <title>Velocity Container Build Management &mdash; Velocity  documentation</title>
       <link rel="stylesheet" type="text/css" href="_static/pygments.css?v=80d5e7a1" />
       <link rel="stylesheet" type="text/css" href="_static/css/theme.css?v=19f00094" />
 
@@ -66,7 +66,7 @@
           <div role="navigation" aria-label="Page navigation">
   <ul class="wy-breadcrumbs">
       <li><a href="#" class="icon icon-home" aria-label="Home"></a></li>
-      <li class="breadcrumb-item active">Velocity Container Build System</li>
+      <li class="breadcrumb-item active">Velocity Container Build Management</li>
       <li class="wy-breadcrumbs-aside">
             <a href="_sources/index.rst.txt" rel="nofollow"> View page source</a>
       </li>
@@ -76,8 +76,10 @@
           <div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article">
            <div itemprop="articleBody">
              
-  <section id="velocity-container-build-system">
-<h1>Velocity Container Build System<a class="headerlink" href="#velocity-container-build-system" title="Link to this heading"></a></h1>
+  <section id="velocity-container-build-management">
+<h1>Velocity Container Build Management<a class="headerlink" href="#velocity-container-build-management" title="Link to this heading"></a></h1>
+<p>Velocity is a tool to help with the maintenance of container build scripts on multiple systems, backends
+(e.g podman or apptainer) and distros.</p>
 <div class="toctree-wrapper compound">
 <ul>
 <li class="toctree-l1"><a class="reference internal" href="starting/index.html">Getting Started</a><ul>
@@ -90,8 +92,9 @@ <h1>Velocity Container Build System<a class="headerlink" href="#velocity-contain
 <div class="toctree-wrapper compound">
 <ul>
 <li class="toctree-l1"><a class="reference internal" href="reference/index.html">Technical Docs</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="reference/config.html">Configuration</a></li>
 <li class="toctree-l2"><a class="reference internal" href="reference/vtmp.html">VTMP Format</a></li>
-<li class="toctree-l2"><a class="reference internal" href="reference/specifications.html">Specifications.yaml</a></li>
+<li class="toctree-l2"><a class="reference internal" href="reference/specs.html">Specs.yaml</a></li>
 <li class="toctree-l2"><a class="reference internal" href="reference/build.html">Build Process</a></li>
 </ul>
 </li>
diff --git a/docs/build/html/objects.inv b/docs/build/html/objects.inv
index 2254dafed232b111a60ee312e89f97ca8ffd8fda..8827a599a0d7fc542d16e72ca155a95ca3f5ed83 100644
GIT binary patch
delta 382
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delta 351
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xwd<Wh;d@*%n84_<L11T-57VQ63uqnPsW8I8JgfZU70p|>qNj;WegOB0SM`y4u%Q3|

diff --git a/docs/build/html/reference/build.html b/docs/build/html/reference/build.html
index bc6183e..320f4e6 100644
--- a/docs/build/html/reference/build.html
+++ b/docs/build/html/reference/build.html
@@ -22,7 +22,7 @@
     <script src="../_static/js/theme.js"></script>
     <link rel="index" title="Index" href="../genindex.html" />
     <link rel="search" title="Search" href="../search.html" />
-    <link rel="prev" title="Specifications.yaml" href="specifications.html" /> 
+    <link rel="prev" title="Specs.yaml" href="specs.html" /> 
 </head>
 
 <body class="wy-body-for-nav"> 
@@ -50,8 +50,9 @@
 </ul>
 <ul class="current">
 <li class="toctree-l1 current"><a class="reference internal" href="index.html">Technical Docs</a><ul class="current">
+<li class="toctree-l2"><a class="reference internal" href="config.html">Configuration</a></li>
 <li class="toctree-l2"><a class="reference internal" href="vtmp.html">VTMP Format</a></li>
-<li class="toctree-l2"><a class="reference internal" href="specifications.html">Specifications.yaml</a></li>
+<li class="toctree-l2"><a class="reference internal" href="specs.html">Specs.yaml</a></li>
 <li class="toctree-l2 current"><a class="current reference internal" href="#">Build Process</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#setup">Setup</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#files">Files</a></li>
@@ -95,14 +96,12 @@ <h1>Build Process<a class="headerlink" href="#build-process" title="Link to this
 <p>This page describes the steps that velocity goes through when building an image.</p>
 <section id="setup">
 <h2>Setup<a class="headerlink" href="#setup" title="Link to this heading"></a></h2>
-<p>After selecting images to build and ordering them. Velocity will start by assigning a random
-id to each image to be built. It will also create a directory BSD (Build Sub Dir) named with that random id in
-<cite>VELOCITY_BUILD_DIR</cite>.</p>
+<p>After selecting images to build and ordering them Velocity will also create a directory BSD (Build Sub Dir)
+named <code class="docutils literal notranslate"><span class="pre">&lt;name&gt;-&lt;version&gt;-&lt;hash&gt;</span></code> in build directory.</p>
 </section>
 <section id="files">
 <span id="id1"></span><h2>Files<a class="headerlink" href="#files" title="Link to this heading"></a></h2>
-<p>Next Velocity will look for a folder in the image definition directory with the same name as <cite>VELOCITY_SYSTEM</cite>. All
-of the files in this directory will be copied to the BSD.</p>
+<p>Next Velocity will copy any files that you specified.</p>
 </section>
 <section id="parse-template">
 <h2>Parse Template<a class="headerlink" href="#parse-template" title="Link to this heading"></a></h2>
@@ -119,15 +118,18 @@ <h2>Build<a class="headerlink" href="#build" title="Link to this heading"></a
 </section>
 <section id="build-directory-layout">
 <h2>Build Directory Layout<a class="headerlink" href="#build-directory-layout" title="Link to this heading"></a></h2>
-<p>At the end of a build <cite>VELOCITY_BUILD_DIR</cite> should look somthing like this. With the addition of any other files that
+<p>At the end of a build the build dir should look somthing like this. With the addition of any other files that
 got copied in the <a class="reference internal" href="#files"><span class="std std-ref">files</span></a> step.</p>
 <div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>.
-├──<span class="w"> </span>jknqsnkc
-│<span class="w">   </span>├──<span class="w"> </span>build
-│<span class="w">   </span>├──<span class="w"> </span>log
-│<span class="w">   </span>└──<span class="w"> </span>script
-└──<span class="w"> </span>nfhmhmsh
+├──<span class="w"> </span>fedora-41-8a9a360
+│<span class="w"> </span>├──<span class="w"> </span>8a9a360.sif
+│<span class="w"> </span>├──<span class="w"> </span>build
+│<span class="w"> </span>├──<span class="w"> </span>log
+│<span class="w"> </span>└──<span class="w"> </span>script
+└──<span class="w"> </span>hello-world-1.0-de9c02b
 <span class="w">    </span>├──<span class="w"> </span>build
+<span class="w">    </span>├──<span class="w"> </span>de9c02b.sif
+<span class="w">    </span>├──<span class="w"> </span>hello_world.py
 <span class="w">    </span>├──<span class="w"> </span>log
 <span class="w">    </span>└──<span class="w"> </span>script
 </pre></div>
@@ -139,7 +141,7 @@ <h2>Build Directory Layout<a class="headerlink" href="#build-directory-layout" t
            </div>
           </div>
           <footer><div class="rst-footer-buttons" role="navigation" aria-label="Footer">
-        <a href="specifications.html" class="btn btn-neutral float-left" title="Specifications.yaml" accesskey="p" rel="prev"><span class="fa fa-arrow-circle-left" aria-hidden="true"></span> Previous</a>
+        <a href="specs.html" class="btn btn-neutral float-left" title="Specs.yaml" accesskey="p" rel="prev"><span class="fa fa-arrow-circle-left" aria-hidden="true"></span> Previous</a>
     </div>
 
   <hr/>
diff --git a/docs/build/html/reference/config.html b/docs/build/html/reference/config.html
new file mode 100644
index 0000000..7dfb61c
--- /dev/null
+++ b/docs/build/html/reference/config.html
@@ -0,0 +1,191 @@
+<!DOCTYPE html>
+<html class="writer-html5" lang="en" data-content_root="../">
+<head>
+  <meta charset="utf-8" /><meta name="viewport" content="width=device-width, initial-scale=1" />
+
+  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+  <title>Configuration &mdash; Velocity  documentation</title>
+      <link rel="stylesheet" type="text/css" href="../_static/pygments.css?v=80d5e7a1" />
+      <link rel="stylesheet" type="text/css" href="../_static/css/theme.css?v=19f00094" />
+
+  
+    <link rel="shortcut icon" href="../_static/icon.png"/>
+  <!--[if lt IE 9]>
+    <script src="../_static/js/html5shiv.min.js"></script>
+  <![endif]-->
+  
+        <script src="../_static/jquery.js?v=5d32c60e"></script>
+        <script src="../_static/_sphinx_javascript_frameworks_compat.js?v=2cd50e6c"></script>
+        <script src="../_static/documentation_options.js?v=5929fcd5"></script>
+        <script src="../_static/doctools.js?v=9a2dae69"></script>
+        <script src="../_static/sphinx_highlight.js?v=dc90522c"></script>
+    <script src="../_static/js/theme.js"></script>
+    <link rel="index" title="Index" href="../genindex.html" />
+    <link rel="search" title="Search" href="../search.html" />
+    <link rel="next" title="VTMP Format" href="vtmp.html" />
+    <link rel="prev" title="Technical Docs" href="index.html" /> 
+</head>
+
+<body class="wy-body-for-nav"> 
+  <div class="wy-grid-for-nav">
+    <nav data-toggle="wy-nav-shift" class="wy-nav-side">
+      <div class="wy-side-scroll">
+        <div class="wy-side-nav-search"  style="background: #909d9e" >
+
+          
+          
+          <a href="../index.html" class="icon icon-home">
+            Velocity
+              <img src="../_static/icon.png" class="logo" alt="Logo"/>
+          </a>
+<div role="search">
+  <form id="rtd-search-form" class="wy-form" action="../search.html" method="get">
+    <input type="text" name="q" placeholder="Search docs" aria-label="Search docs" />
+    <input type="hidden" name="check_keywords" value="yes" />
+    <input type="hidden" name="area" value="default" />
+  </form>
+</div>
+        </div><div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="Navigation menu">
+              <ul>
+<li class="toctree-l1"><a class="reference internal" href="../starting/index.html">Getting Started</a></li>
+</ul>
+<ul class="current">
+<li class="toctree-l1 current"><a class="reference internal" href="index.html">Technical Docs</a><ul class="current">
+<li class="toctree-l2 current"><a class="current reference internal" href="#">Configuration</a><ul>
+<li class="toctree-l3"><a class="reference internal" href="#commandline-options">Commandline Options</a></li>
+<li class="toctree-l3"><a class="reference internal" href="#variables">Variables</a><ul>
+<li class="toctree-l4"><a class="reference internal" href="#velocity-image-path"><cite>VELOCITY_IMAGE_PATH</cite></a></li>
+<li class="toctree-l4"><a class="reference internal" href="#velocity-system"><cite>VELOCITY_SYSTEM</cite></a></li>
+<li class="toctree-l4"><a class="reference internal" href="#velocity-backend"><cite>VELOCITY_BACKEND</cite></a></li>
+<li class="toctree-l4"><a class="reference internal" href="#velocity-distro"><cite>VELOCITY_DISTRO</cite></a></li>
+<li class="toctree-l4"><a class="reference internal" href="#velocity-build-dir"><cite>VELOCITY_BUILD_DIR</cite></a></li>
+<li class="toctree-l4"><a class="reference internal" href="#velocity-config-dir"><cite>VELOCITY_CONFIG_DIR</cite></a></li>
+</ul>
+</li>
+<li class="toctree-l3"><a class="reference internal" href="#configuration-file">Configuration File</a></li>
+</ul>
+</li>
+<li class="toctree-l2"><a class="reference internal" href="vtmp.html">VTMP Format</a></li>
+<li class="toctree-l2"><a class="reference internal" href="specs.html">Specs.yaml</a></li>
+<li class="toctree-l2"><a class="reference internal" href="build.html">Build Process</a></li>
+</ul>
+</li>
+</ul>
+
+        </div>
+      </div>
+    </nav>
+
+    <section data-toggle="wy-nav-shift" class="wy-nav-content-wrap"><nav class="wy-nav-top" aria-label="Mobile navigation menu"  style="background: #909d9e" >
+          <i data-toggle="wy-nav-top" class="fa fa-bars"></i>
+          <a href="../index.html">Velocity</a>
+      </nav>
+
+      <div class="wy-nav-content">
+        <div class="rst-content">
+          <div role="navigation" aria-label="Page navigation">
+  <ul class="wy-breadcrumbs">
+      <li><a href="../index.html" class="icon icon-home" aria-label="Home"></a></li>
+          <li class="breadcrumb-item"><a href="index.html">Technical Docs</a></li>
+      <li class="breadcrumb-item active">Configuration</li>
+      <li class="wy-breadcrumbs-aside">
+            <a href="../_sources/reference/config.rst.txt" rel="nofollow"> View page source</a>
+      </li>
+  </ul>
+  <hr/>
+</div>
+          <div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article">
+           <div itemprop="articleBody">
+             
+  <section id="configuration">
+<h1>Configuration<a class="headerlink" href="#configuration" title="Link to this heading"></a></h1>
+<p>Configuration for Velocity comes from three places. Command line options, environment variables and the configuration file.</p>
+<section id="commandline-options">
+<h2>Commandline Options<a class="headerlink" href="#commandline-options" title="Link to this heading"></a></h2>
+<p>These take the highest level of precedence and can be viewed by using the <code class="docutils literal notranslate"><span class="pre">--help</span></code> option in the command line.</p>
+</section>
+<section id="variables">
+<h2>Variables<a class="headerlink" href="#variables" title="Link to this heading"></a></h2>
+<p>Variables are the second highest level of configuration.</p>
+<section id="velocity-image-path">
+<h3><cite>VELOCITY_IMAGE_PATH</cite><a class="headerlink" href="#velocity-image-path" title="Link to this heading"></a></h3>
+<p>This variable points to the directories containing the the image definitions.</p>
+</section>
+<section id="velocity-system">
+<h3><cite>VELOCITY_SYSTEM</cite><a class="headerlink" href="#velocity-system" title="Link to this heading"></a></h3>
+<p>This variable specifies what computer system you are building for (e.g. frontier).</p>
+</section>
+<section id="velocity-backend">
+<h3><cite>VELOCITY_BACKEND</cite><a class="headerlink" href="#velocity-backend" title="Link to this heading"></a></h3>
+<p>This variable specifies the container backend that should be used (e.g podman).</p>
+</section>
+<section id="velocity-distro">
+<h3><cite>VELOCITY_DISTRO</cite><a class="headerlink" href="#velocity-distro" title="Link to this heading"></a></h3>
+<p>This variable specifies the distro of the container images that will be built. This name is flexable and completely
+up to the user. It is used purely for organizational purposes.</p>
+</section>
+<section id="velocity-build-dir">
+<h3><cite>VELOCITY_BUILD_DIR</cite><a class="headerlink" href="#velocity-build-dir" title="Link to this heading"></a></h3>
+<p>This variable specifies a scratch space for Velocity to preform builds in.</p>
+</section>
+<section id="velocity-config-dir">
+<h3><cite>VELOCITY_CONFIG_DIR</cite><a class="headerlink" href="#velocity-config-dir" title="Link to this heading"></a></h3>
+<p>This variable specifies where to look for the configuration file.</p>
+</section>
+</section>
+<section id="configuration-file">
+<h2>Configuration File<a class="headerlink" href="#configuration-file" title="Link to this heading"></a></h2>
+<p>The configuration file is the lowest level of configuration. By default Velocity looks for <code class="docutils literal notranslate"><span class="pre">config.yaml</span></code> in
+<code class="docutils literal notranslate"><span class="pre">~/.velocity</span></code> unless <code class="docutils literal notranslate"><span class="pre">VELOCITY_CONFIG_DIR</span></code> is set. A number of configuration option for velocity can be set.</p>
+<div class="highlight-yaml notranslate"><div class="highlight"><pre><span></span><span class="nt">velocity</span><span class="p">:</span>
+<span class="w">  </span><span class="nt">system</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">frontier</span>
+<span class="w">  </span><span class="nt">backend</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">apptainer</span>
+<span class="w">  </span><span class="nt">distro</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">ubuntu</span>
+<span class="w">  </span><span class="nt">debug</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">INFO</span><span class="w">   </span><span class="c1"># set the debug level</span>
+<span class="w">  </span><span class="nt">image_path</span><span class="p">:</span><span class="w">   </span><span class="c1"># a list of : seperated paths</span>
+<span class="w">  </span><span class="nt">build_dir</span><span class="p">:</span><span class="w">    </span><span class="c1"># path to a scratch space</span>
+</pre></div>
+</div>
+<p>Additionally you can set <a class="reference internal" href="specs.html#arguments"><span class="std std-ref">arguments</span></a> and <a class="reference internal" href="specs.html#specvariables"><span class="std std-ref">variables</span></a> at a global level in the constraints section. As an example here
+we are adding <code class="docutils literal notranslate"><span class="pre">--disable-cache</span></code> as an argument for every image build we do with apptainer.</p>
+<div class="highlight-yaml notranslate"><div class="highlight"><pre><span></span><span class="nt">constraints</span><span class="p">:</span>
+<span class="w">  </span><span class="nt">arguments</span><span class="p">:</span>
+<span class="w">    </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">value</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">--disable-cache</span>
+<span class="w">      </span><span class="nt">when</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">backend=apptainer</span>
+</pre></div>
+</div>
+</section>
+</section>
+
+
+           </div>
+          </div>
+          <footer><div class="rst-footer-buttons" role="navigation" aria-label="Footer">
+        <a href="index.html" class="btn btn-neutral float-left" title="Technical Docs" accesskey="p" rel="prev"><span class="fa fa-arrow-circle-left" aria-hidden="true"></span> Previous</a>
+        <a href="vtmp.html" class="btn btn-neutral float-right" title="VTMP Format" accesskey="n" rel="next">Next <span class="fa fa-arrow-circle-right" aria-hidden="true"></span></a>
+    </div>
+
+  <hr/>
+
+  <div role="contentinfo">
+    <p>&#169; Copyright 2024, OLCF.</p>
+  </div>
+
+  Built with <a href="https://www.sphinx-doc.org/">Sphinx</a> using a
+    <a href="https://github.com/readthedocs/sphinx_rtd_theme">theme</a>
+    provided by <a href="https://readthedocs.org">Read the Docs</a>.
+   
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+      jQuery(function () {
+          SphinxRtdTheme.Navigation.enable(true);
+      });
+  </script> 
+
+</body>
+</html>
\ No newline at end of file
diff --git a/docs/build/html/reference/index.html b/docs/build/html/reference/index.html
index 2931e30..26ccfca 100644
--- a/docs/build/html/reference/index.html
+++ b/docs/build/html/reference/index.html
@@ -22,7 +22,7 @@
     <script src="../_static/js/theme.js"></script>
     <link rel="index" title="Index" href="../genindex.html" />
     <link rel="search" title="Search" href="../search.html" />
-    <link rel="next" title="VTMP Format" href="vtmp.html" />
+    <link rel="next" title="Configuration" href="config.html" />
     <link rel="prev" title="Creating Your First Image" href="../starting/tutorial.html" /> 
 </head>
 
@@ -51,8 +51,9 @@
 </ul>
 <ul class="current">
 <li class="toctree-l1 current"><a class="current reference internal" href="#">Technical Docs</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="config.html">Configuration</a></li>
 <li class="toctree-l2"><a class="reference internal" href="vtmp.html">VTMP Format</a></li>
-<li class="toctree-l2"><a class="reference internal" href="specifications.html">Specifications.yaml</a></li>
+<li class="toctree-l2"><a class="reference internal" href="specs.html">Specs.yaml</a></li>
 <li class="toctree-l2"><a class="reference internal" href="build.html">Build Process</a></li>
 </ul>
 </li>
@@ -86,15 +87,23 @@
 <h1>Technical Docs<a class="headerlink" href="#technical-docs" title="Link to this heading"></a></h1>
 <div class="toctree-wrapper compound">
 <ul>
+<li class="toctree-l1"><a class="reference internal" href="config.html">Configuration</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="config.html#commandline-options">Commandline Options</a></li>
+<li class="toctree-l2"><a class="reference internal" href="config.html#variables">Variables</a></li>
+<li class="toctree-l2"><a class="reference internal" href="config.html#configuration-file">Configuration File</a></li>
+</ul>
+</li>
 <li class="toctree-l1"><a class="reference internal" href="vtmp.html">VTMP Format</a><ul>
 <li class="toctree-l2"><a class="reference internal" href="vtmp.html#variables">Variables</a></li>
-<li class="toctree-l2"><a class="reference internal" href="vtmp.html#sections">Sections</a></li>
+<li class="toctree-l2"><a class="reference internal" href="vtmp.html#arguments">Arguments</a></li>
 <li class="toctree-l2"><a class="reference internal" href="vtmp.html#conditionals">Conditionals</a></li>
+<li class="toctree-l2"><a class="reference internal" href="vtmp.html#sections">Sections</a></li>
 </ul>
 </li>
-<li class="toctree-l1"><a class="reference internal" href="specifications.html">Specifications.yaml</a><ul>
-<li class="toctree-l2"><a class="reference internal" href="specifications.html#basic-layout">Basic Layout</a></li>
-<li class="toctree-l2"><a class="reference internal" href="specifications.html#config-options">Config Options</a></li>
+<li class="toctree-l1"><a class="reference internal" href="specs.html">Specs.yaml</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="specs.html#about">About</a></li>
+<li class="toctree-l2"><a class="reference internal" href="specs.html#config-options">Config Options</a></li>
+<li class="toctree-l2"><a class="reference internal" href="specs.html#using-when">Using <code class="docutils literal notranslate"><span class="pre">when</span></code></a></li>
 </ul>
 </li>
 <li class="toctree-l1"><a class="reference internal" href="build.html">Build Process</a><ul>
@@ -115,7 +124,7 @@ <h1>Technical Docs<a class="headerlink" href="#technical-docs" title="Link to th
           </div>
           <footer><div class="rst-footer-buttons" role="navigation" aria-label="Footer">
         <a href="../starting/tutorial.html" class="btn btn-neutral float-left" title="Creating Your First Image" accesskey="p" rel="prev"><span class="fa fa-arrow-circle-left" aria-hidden="true"></span> Previous</a>
-        <a href="vtmp.html" class="btn btn-neutral float-right" title="VTMP Format" accesskey="n" rel="next">Next <span class="fa fa-arrow-circle-right" aria-hidden="true"></span></a>
+        <a href="config.html" class="btn btn-neutral float-right" title="Configuration" accesskey="n" rel="next">Next <span class="fa fa-arrow-circle-right" aria-hidden="true"></span></a>
     </div>
 
   <hr/>
diff --git a/docs/build/html/reference/specifications.html b/docs/build/html/reference/specifications.html
deleted file mode 100644
index 7fec271..0000000
--- a/docs/build/html/reference/specifications.html
+++ /dev/null
@@ -1,278 +0,0 @@
-<!DOCTYPE html>
-<html class="writer-html5" lang="en" data-content_root="../">
-<head>
-  <meta charset="utf-8" /><meta name="viewport" content="width=device-width, initial-scale=1" />
-
-  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>Specifications.yaml &mdash; Velocity  documentation</title>
-      <link rel="stylesheet" type="text/css" href="../_static/pygments.css?v=80d5e7a1" />
-      <link rel="stylesheet" type="text/css" href="../_static/css/theme.css?v=19f00094" />
-
-  
-    <link rel="shortcut icon" href="../_static/icon.png"/>
-  <!--[if lt IE 9]>
-    <script src="../_static/js/html5shiv.min.js"></script>
-  <![endif]-->
-  
-        <script src="../_static/jquery.js?v=5d32c60e"></script>
-        <script src="../_static/_sphinx_javascript_frameworks_compat.js?v=2cd50e6c"></script>
-        <script src="../_static/documentation_options.js?v=5929fcd5"></script>
-        <script src="../_static/doctools.js?v=9a2dae69"></script>
-        <script src="../_static/sphinx_highlight.js?v=dc90522c"></script>
-    <script src="../_static/js/theme.js"></script>
-    <link rel="index" title="Index" href="../genindex.html" />
-    <link rel="search" title="Search" href="../search.html" />
-    <link rel="next" title="Build Process" href="build.html" />
-    <link rel="prev" title="VTMP Format" href="vtmp.html" /> 
-</head>
-
-<body class="wy-body-for-nav"> 
-  <div class="wy-grid-for-nav">
-    <nav data-toggle="wy-nav-shift" class="wy-nav-side">
-      <div class="wy-side-scroll">
-        <div class="wy-side-nav-search"  style="background: #909d9e" >
-
-          
-          
-          <a href="../index.html" class="icon icon-home">
-            Velocity
-              <img src="../_static/icon.png" class="logo" alt="Logo"/>
-          </a>
-<div role="search">
-  <form id="rtd-search-form" class="wy-form" action="../search.html" method="get">
-    <input type="text" name="q" placeholder="Search docs" aria-label="Search docs" />
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-             
-  <section id="specifications-yaml">
-<h1>Specifications.yaml<a class="headerlink" href="#specifications-yaml" title="Link to this heading"></a></h1>
-<section id="basic-layout">
-<h2>Basic Layout<a class="headerlink" href="#basic-layout" title="Link to this heading"></a></h2>
-<p>The <cite>specifications.yaml</cite> file defines image availability, dependencies and a number of other available
-options for an image. Velocity doesn’t care about any extraneous data you may have in it. All that Velocity looks
-for is a base level section called <cite>build_specifications</cite>. Any other sections that you may add for your own purposes
-are ignored by Velocity. Under <cite>build_specifications</cite> there should be a tree defining under what conditions the image
-can be built in the order <cite>system</cite> &gt; <cite>backend</cite> &gt; <cite>distro</cite>. For example if I am creating an <cite>centos</cite> based image for use on
-frontier which only has Apptainer on it then I should have the following structure in my <cite>specifications.yaml</cite> file.</p>
-<div class="highlight-yaml notranslate"><div class="highlight"><pre><span></span><span class="nt">build_specifications</span><span class="p">:</span>
-<span class="w">  </span><span class="nt">frontier</span><span class="p">:</span>
-<span class="w">    </span><span class="nt">apptainer</span><span class="p">:</span>
-<span class="w">      </span><span class="nt">ubuntu</span><span class="p">:</span>
-<span class="w">        </span><span class="c1"># config options</span>
-</pre></div>
-</div>
-<p>If I wanted it to be available on summit as well which has Apptainer and Podman I would add the following.</p>
-<div class="highlight-yaml notranslate"><div class="highlight"><pre><span></span><span class="nt">build_specifications</span><span class="p">:</span>
-<span class="w">  </span><span class="nt">frontier</span><span class="p">:</span>
-<span class="w">    </span><span class="nt">apptainer</span><span class="p">:</span>
-<span class="w">      </span><span class="nt">centos</span><span class="p">:</span>
-<span class="w">        </span><span class="c1"># config options</span>
-<span class="w">  </span><span class="nt">summit</span><span class="p">:</span>
-<span class="w">    </span><span class="nt">apptainer</span><span class="p">:</span>
-<span class="w">      </span><span class="nt">centos</span><span class="p">:</span>
-<span class="w">        </span><span class="c1"># config options</span>
-<span class="w">    </span><span class="nt">podman</span><span class="p">:</span>
-<span class="w">      </span><span class="nt">centos</span><span class="p">:</span>
-<span class="w">        </span><span class="c1"># config options</span>
-</pre></div>
-</div>
-<p>While <cite>system</cite> and <cite>backend</cite> are fairly self explanatory the <cite>distro</cite> is a little more obscure. Velocity does not do
-any checks to make sure that the image being built is actually of the right distro. All that the distro tells Velocity to do is
-look in the <cite>templates</cite> folder of an image for a template called <cite>&lt;distro&gt;.vtmp</cite> (e.g. centos.vtmp). If a template with
-the right name cannot be found Velocity will error.</p>
-<div class="literal-block-wrapper docutils container" id="id1">
-<div class="code-block-caption"><span class="caption-text">image structure</span><a class="headerlink" href="#id1" title="Link to this code"></a></div>
-<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>.
-└──<span class="w"> </span>&lt;image<span class="w"> </span>name&gt;
-<span class="w">    </span>└──<span class="w"> </span>&lt;image<span class="w"> </span>version&gt;
-<span class="w">        </span>├──<span class="w"> </span>specifications.yaml
-<span class="w">        </span>└──<span class="w"> </span>templates
-<span class="w">            </span>└──<span class="w"> </span>&lt;distro&gt;.vtmp
-</pre></div>
-</div>
-</div>
-</section>
-<section id="config-options">
-<h2>Config Options<a class="headerlink" href="#config-options" title="Link to this heading"></a></h2>
-<p>Under each <cite>system</cite> &gt; <cite>backend</cite> &gt; <cite>distro</cite> section there are a variaty of config options available.</p>
-<section id="dependencies">
-<h3>dependencies<a class="headerlink" href="#dependencies" title="Link to this heading"></a></h3>
-<p>The <cite>dependencies</cite> section is a list of images that must be built before the current one can be.</p>
-<div class="highlight-yaml notranslate"><div class="highlight"><pre><span></span><span class="nt">build_specifications</span><span class="p">:</span>
-<span class="w">  </span><span class="nt">frontier</span><span class="p">:</span>
-<span class="w">    </span><span class="nt">apptainer</span><span class="p">:</span>
-<span class="w">      </span><span class="nt">ubuntu</span><span class="p">:</span>
-<span class="w">        </span><span class="nt">dependencies</span><span class="p">:</span>
-<span class="w">          </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">dep_one</span>
-<span class="w">          </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">dep_two</span>
-<span class="w">            </span><span class="l l-Scalar l-Scalar-Plain"># ...</span>
-</pre></div>
-</div>
-<p>Some times you may want a specific version of a dependency in which case Velocity provides several ways to specify dependency
-relationships. Versions are compared by splitting the version string up based on periods and then comparing the sections
-left to right alphanumerically.</p>
-<div class="highlight-yaml notranslate"><div class="highlight"><pre><span></span><span class="nt">build_specifications</span><span class="p">:</span>
-<span class="w">  </span><span class="nt">frontier</span><span class="p">:</span>
-<span class="w">    </span><span class="nt">apptainer</span><span class="p">:</span>
-<span class="w">      </span><span class="nt">ubuntu</span><span class="p">:</span>
-<span class="w">        </span><span class="nt">dependencies</span><span class="p">:</span>
-<span class="w">          </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">dep_one@=11.5</span><span class="w">       </span><span class="c1"># equal to 11.5</span>
-<span class="w">          </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">dep_two@_11.5</span><span class="w">       </span><span class="c1"># less than or equal to 11.5</span>
-<span class="w">          </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">dep_three@^11.5</span><span class="w">     </span><span class="c1"># greater than or equal to 11.5</span>
-<span class="w">          </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">dep_four@11.2%11.8</span><span class="w">  </span><span class="c1"># inbetween 11.2 and 11.8 (inclusive)</span>
-<span class="w">            </span><span class="c1"># ...</span>
-</pre></div>
-</div>
-</section>
-<section id="prolog">
-<h3>prolog<a class="headerlink" href="#prolog" title="Link to this heading"></a></h3>
-<p>There are certain occasions when some commands need to be run on the host machine before an image is built. These
-commands can be placed in a bash script in a directory which matches the system name. All that you need to do in the
-<cite>specifications.yaml</cite> file is put the script name.</p>
-<div class="highlight-yaml notranslate"><div class="highlight"><pre><span></span><span class="nt">build_specifications</span><span class="p">:</span>
-<span class="w">  </span><span class="nt">frontier</span><span class="p">:</span>
-<span class="w">    </span><span class="nt">apptainer</span><span class="p">:</span>
-<span class="w">      </span><span class="nt">ubuntu</span><span class="p">:</span>
-<span class="w">        </span><span class="nt">dependencies</span><span class="p">:</span>
-<span class="w">          </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">dep_one</span>
-<span class="w">          </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">dep_two</span>
-<span class="w">            </span><span class="l l-Scalar l-Scalar-Plain"># ...</span>
-<span class="w">        </span><span class="nt">prolog</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">example_prolog.sh</span>
-</pre></div>
-</div>
-<div class="literal-block-wrapper docutils container" id="id2">
-<div class="code-block-caption"><span class="caption-text">VELOCITY_IMAGE_DIR</span><a class="headerlink" href="#id2" title="Link to this code"></a></div>
-<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>.
-├──<span class="w"> </span>&lt;image<span class="w"> </span>name&gt;
-<span class="w">    </span>└──<span class="w"> </span>&lt;image<span class="w"> </span>version&gt;
-<span class="w">        </span>├──<span class="w"> </span>&lt;system&gt;
-<span class="w">        </span>│<span class="w">    </span>└──<span class="w"> </span>example_prolog.sh
-<span class="w">        </span>├──<span class="w"> </span>specifications.yaml
-<span class="w">        </span>└──<span class="w"> </span>templates
-<span class="w">            </span>└──<span class="w"> </span>&lt;distro&gt;.vtmp
-</pre></div>
-</div>
-</div>
-</section>
-<section id="arguments">
-<h3>arguments<a class="headerlink" href="#arguments" title="Link to this heading"></a></h3>
-<p>Any arguments specified here will be added to the build command.</p>
-<div class="highlight-yaml notranslate"><div class="highlight"><pre><span></span><span class="nt">build_specifications</span><span class="p">:</span>
-<span class="w">  </span><span class="nt">frontier</span><span class="p">:</span>
-<span class="w">    </span><span class="nt">apptainer</span><span class="p">:</span>
-<span class="w">      </span><span class="nt">ubuntu</span><span class="p">:</span>
-<span class="w">        </span><span class="nt">dependencies</span><span class="p">:</span>
-<span class="w">          </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">dep_one</span>
-<span class="w">          </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">dep_two</span>
-<span class="w">            </span><span class="l l-Scalar l-Scalar-Plain"># ...</span>
-<span class="w">        </span><span class="nt">prolog</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">example_prolog.sh</span>
-<span class="w">        </span><span class="nt">arguments</span><span class="p">:</span>
-<span class="w">          </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">&#39;--build-arg</span><span class="nv"> </span><span class="s">EXAMPLE=8046&#39;</span>
-</pre></div>
-</div>
-<p>This will result in <cite>apptainer build –build-arg EXAMPLE=8046 …</cite> when the image is built.</p>
-</section>
-<section id="variables">
-<h3>variables<a class="headerlink" href="#variables" title="Link to this heading"></a></h3>
-<p>Here you can define <a class="reference internal" href="vtmp.html#variables"><span class="std std-ref">variables</span></a> for the VTMP file to use when it is parsed.</p>
-<div class="highlight-yaml notranslate"><div class="highlight"><pre><span></span><span class="nt">build_specifications</span><span class="p">:</span>
-<span class="w">  </span><span class="nt">frontier</span><span class="p">:</span>
-<span class="w">    </span><span class="nt">apptainer</span><span class="p">:</span>
-<span class="w">      </span><span class="nt">ubuntu</span><span class="p">:</span>
-<span class="w">        </span><span class="nt">dependencies</span><span class="p">:</span>
-<span class="w">          </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">dep_one</span>
-<span class="w">          </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">dep_two</span>
-<span class="w">            </span><span class="l l-Scalar l-Scalar-Plain"># ...</span>
-<span class="w">        </span><span class="nt">prolog</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">example_prolog.sh</span>
-<span class="w">        </span><span class="nt">arguments</span><span class="p">:</span>
-<span class="w">          </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">&#39;--build-arg</span><span class="nv"> </span><span class="s">EXAMPLE=8046&#39;</span>
-<span class="w">        </span><span class="nt">variables</span><span class="p">:</span>
-<span class="w">          </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">arch</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">x86_64</span>
-<span class="w">          </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">url</span><span class="p">:</span><span class="w"> </span><span class="s">&#39;https://example.com&#39;</span>
-</pre></div>
-</div>
-</section>
-</section>
-</section>
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diff --git a/docs/build/html/reference/specs.html b/docs/build/html/reference/specs.html
new file mode 100644
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+<!DOCTYPE html>
+<html class="writer-html5" lang="en" data-content_root="../">
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+          <div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article">
+           <div itemprop="articleBody">
+             
+  <section id="specs-yaml">
+<h1>Specs.yaml<a class="headerlink" href="#specs-yaml" title="Link to this heading"></a></h1>
+<section id="about">
+<h2>About<a class="headerlink" href="#about" title="Link to this heading"></a></h2>
+<p>The <cite>specs.yaml</cite> file defines image availability, dependencies and a number of other available
+options for an image.</p>
+</section>
+<section id="config-options">
+<h2>Config Options<a class="headerlink" href="#config-options" title="Link to this heading"></a></h2>
+<section id="versions">
+<h3>versions<a class="headerlink" href="#versions" title="Link to this heading"></a></h3>
+<p>The <cite>versions</cite> section defines a list of versions and their availability.</p>
+<div class="highlight-yaml notranslate"><div class="highlight"><pre><span></span><span class="nt">versions</span><span class="p">:</span>
+<span class="w">  </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">spec</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">45</span>
+<span class="w">    </span><span class="nt">when</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">distro=ubuntu</span>
+<span class="w">  </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">spec</span><span class="p">:</span>
+<span class="w">      </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">46</span>
+<span class="w">      </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">47</span>
+<span class="w">    </span><span class="nt">when</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">backend=podman</span>
+</pre></div>
+</div>
+</section>
+<section id="dependencies">
+<h3>dependencies<a class="headerlink" href="#dependencies" title="Link to this heading"></a></h3>
+<p>The <cite>dependencies</cite> section is used to specify prerequist images.</p>
+<div class="highlight-yaml notranslate"><div class="highlight"><pre><span></span><span class="nt">dependencies</span><span class="p">:</span>
+<span class="w">  </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">spec</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">ubuntu</span>
+<span class="w">    </span><span class="nt">when</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">distro=ubuntu</span>
+<span class="w">  </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">spec</span><span class="p">:</span>
+<span class="w">      </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">&quot;gcc@12:&quot;</span>
+<span class="w">      </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">pytorch</span>
+<span class="w">    </span><span class="nt">when</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">myapp@:2.3</span>
+</pre></div>
+</div>
+</section>
+<section id="templates">
+<h3>templates<a class="headerlink" href="#templates" title="Link to this heading"></a></h3>
+<p>By default velocity looks for a template called <code class="docutils literal notranslate"><span class="pre">default.vtmp</span></code>, but using the <cite>templates</cite> section you can specify an
+alternate template.</p>
+<div class="highlight-yaml notranslate"><div class="highlight"><pre><span></span><span class="nt">templates</span><span class="p">:</span>
+<span class="w">  </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">second_tmp</span>
+<span class="w">    </span><span class="nt">when</span><span class="p">:</span><span class="w"> </span><span class="s">&quot;myapp@2:&quot;</span>
+</pre></div>
+</div>
+</section>
+<section id="arguments">
+<span id="id1"></span><h3>arguments<a class="headerlink" href="#arguments" title="Link to this heading"></a></h3>
+<p>Use the <cite>argument</cite> section to add build time arguments to an image.</p>
+<div class="highlight-yaml notranslate"><div class="highlight"><pre><span></span><span class="nt">arguments</span><span class="p">:</span>
+<span class="w">  </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">value</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">--disable-cache</span>
+<span class="w">    </span><span class="nt">when</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">backend=apptainer</span>
+</pre></div>
+</div>
+</section>
+<section id="variables">
+<span id="specvariables"></span><h3>variables<a class="headerlink" href="#variables" title="Link to this heading"></a></h3>
+<p>Use the <cite>variables</cite> section to set template variables.</p>
+<div class="highlight-yaml notranslate"><div class="highlight"><pre><span></span><span class="nt">variables</span><span class="p">:</span>
+<span class="w">  </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">test_var</span>
+<span class="w">    </span><span class="nt">value</span><span class="p">:</span><span class="w"> </span><span class="s">&quot;Test</span><span class="nv"> </span><span class="s">value.&quot;</span>
+</pre></div>
+</div>
+</section>
+<section id="files">
+<h3>files<a class="headerlink" href="#files" title="Link to this heading"></a></h3>
+<p>Use the <cite>files</cite> section to specify files or directories in the <cite>files</cite> folder that you want copied to the build directory.</p>
+<div class="highlight-yaml notranslate"><div class="highlight"><pre><span></span><span class="nt">files</span><span class="p">:</span>
+<span class="w">  </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">config.json</span>
+</pre></div>
+</div>
+</section>
+<section id="prologs">
+<h3>prologs<a class="headerlink" href="#prologs" title="Link to this heading"></a></h3>
+<p>Use the <cite>prologs</cite> section to bash commands that you want to run before the build.</p>
+<div class="highlight-yaml notranslate"><div class="highlight"><pre><span></span><span class="nt">prologs</span><span class="p">:</span>
+<span class="w">  </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">script</span><span class="p">:</span><span class="w"> </span><span class="p p-Indicator">|</span>
+<span class="w">      </span><span class="no">git clone ...</span>
+<span class="w">    </span><span class="nt">when</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">system=summit</span>
+</pre></div>
+</div>
+</section>
+</section>
+<section id="using-when">
+<h2>Using <code class="docutils literal notranslate"><span class="pre">when</span></code><a class="headerlink" href="#using-when" title="Link to this heading"></a></h2>
+<p>A few notes about using <code class="docutils literal notranslate"><span class="pre">when</span></code> to filter config options. The <code class="docutils literal notranslate"><span class="pre">when</span></code> option can be used to filter configs as shown
+above by system, backend, distro and dependencies. The only exception to this is the <cite>versions</cite> section which cannot
+be filtered by dependencies. List each item that you want to filter by separated by a space e.g. <code class="docutils literal notranslate"><span class="pre">gcc&#64;12.3</span> <span class="pre">system=frontier</span></code>.
+Additionally you can specify the scope of a <code class="docutils literal notranslate"><span class="pre">when</span></code> by specifying the <code class="docutils literal notranslate"><span class="pre">scope</span></code>. The default scope is <code class="docutils literal notranslate"><span class="pre">image</span></code> which means
+that the when statement is evaluated on the current image. So say you want to apply a config in the gcc <cite>specs.yaml</cite> file
+to every gcc version greater than 10.3.0, you would use <code class="docutils literal notranslate"><span class="pre">when:</span> <span class="pre">^ubuntu:</span></code>. Alternatively you can set the scope to <code class="docutils literal notranslate"><span class="pre">build</span></code>
+when you want the when statement evaluated on the current build.</p>
+<div class="highlight-yaml notranslate"><div class="highlight"><pre><span></span><span class="nt">variable</span><span class="p">:</span>
+<span class="w">  </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">TEST</span>
+<span class="w">    </span><span class="nt">value</span><span class="p">:</span><span class="w"> </span><span class="s">&quot;1</span><span class="nv"> </span><span class="s">2</span><span class="nv"> </span><span class="s">3</span><span class="nv"> </span><span class="s">4&quot;</span>
+<span class="w">    </span><span class="nt">when</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">ubuntu</span>
+<span class="w">    </span><span class="nt">scope</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">build</span>
+</pre></div>
+</div>
+<p>This can be read as “If the ubuntu image is in the current set of images to be built then add the TEST variable.”</p>
+</section>
+</section>
+
+
+           </div>
+          </div>
+          <footer><div class="rst-footer-buttons" role="navigation" aria-label="Footer">
+        <a href="vtmp.html" class="btn btn-neutral float-left" title="VTMP Format" accesskey="p" rel="prev"><span class="fa fa-arrow-circle-left" aria-hidden="true"></span> Previous</a>
+        <a href="build.html" class="btn btn-neutral float-right" title="Build Process" accesskey="n" rel="next">Next <span class="fa fa-arrow-circle-right" aria-hidden="true"></span></a>
+    </div>
+
+  <hr/>
+
+  <div role="contentinfo">
+    <p>&#169; Copyright 2024, OLCF.</p>
+  </div>
+
+  Built with <a href="https://www.sphinx-doc.org/">Sphinx</a> using a
+    <a href="https://github.com/readthedocs/sphinx_rtd_theme">theme</a>
+    provided by <a href="https://readthedocs.org">Read the Docs</a>.
+   
+
+</footer>
+        </div>
+      </div>
+    </section>
+  </div>
+  <script>
+      jQuery(function () {
+          SphinxRtdTheme.Navigation.enable(true);
+      });
+  </script> 
+
+</body>
+</html>
\ No newline at end of file
diff --git a/docs/build/html/reference/vtmp.html b/docs/build/html/reference/vtmp.html
index 8e69f00..1ac30e1 100644
--- a/docs/build/html/reference/vtmp.html
+++ b/docs/build/html/reference/vtmp.html
@@ -22,8 +22,8 @@
     <script src="../_static/js/theme.js"></script>
     <link rel="index" title="Index" href="../genindex.html" />
     <link rel="search" title="Search" href="../search.html" />
-    <link rel="next" title="Specifications.yaml" href="specifications.html" />
-    <link rel="prev" title="Technical Docs" href="index.html" /> 
+    <link rel="next" title="Specs.yaml" href="specs.html" />
+    <link rel="prev" title="Configuration" href="config.html" /> 
 </head>
 
 <body class="wy-body-for-nav"> 
@@ -51,12 +51,14 @@
 </ul>
 <ul class="current">
 <li class="toctree-l1 current"><a class="reference internal" href="index.html">Technical Docs</a><ul class="current">
+<li class="toctree-l2"><a class="reference internal" href="config.html">Configuration</a></li>
 <li class="toctree-l2 current"><a class="current reference internal" href="#">VTMP Format</a><ul>
 <li class="toctree-l3"><a class="reference internal" href="#variables">Variables</a></li>
+<li class="toctree-l3"><a class="reference internal" href="#arguments">Arguments</a></li>
+<li class="toctree-l3"><a class="reference internal" href="#conditionals">Conditionals</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#sections">Sections</a><ul>
 <li class="toctree-l4"><a class="reference internal" href="#from">&#64;from</a></li>
 <li class="toctree-l4"><a class="reference internal" href="#pre">&#64;pre</a></li>
-<li class="toctree-l4"><a class="reference internal" href="#arg">&#64;arg</a></li>
 <li class="toctree-l4"><a class="reference internal" href="#copy">&#64;copy</a></li>
 <li class="toctree-l4"><a class="reference internal" href="#run">&#64;run</a></li>
 <li class="toctree-l4"><a class="reference internal" href="#env">&#64;env</a></li>
@@ -65,10 +67,9 @@
 <li class="toctree-l4"><a class="reference internal" href="#post">&#64;post</a></li>
 </ul>
 </li>
-<li class="toctree-l3"><a class="reference internal" href="#conditionals">Conditionals</a></li>
 </ul>
 </li>
-<li class="toctree-l2"><a class="reference internal" href="specifications.html">Specifications.yaml</a></li>
+<li class="toctree-l2"><a class="reference internal" href="specs.html">Specs.yaml</a></li>
 <li class="toctree-l2"><a class="reference internal" href="build.html">Build Process</a></li>
 </ul>
 </li>
@@ -102,74 +103,92 @@
   <section id="vtmp-format">
 <h1>VTMP Format<a class="headerlink" href="#vtmp-format" title="Link to this heading"></a></h1>
 <p>VTMP files are used by Velocity to generate the appropriate script for a particular backend.
-While certain features are supported across all backends, others are exclusive to one backend and many are interpreted
-quite differently between the different backends. The goal of the VTMP files are to provide a unified API for
+The goal of the VTMP files are to provide a unified API for
 container images across multiple backends but they are not feature exhaustive.
 VTMP files are split up into a number of sections.</p>
 <div class="literal-block-wrapper docutils container" id="id2">
 <div class="code-block-caption"><span class="caption-text">Example VTMP</span><a class="headerlink" href="#id2" title="Link to this code"></a></div>
-<div class="highlight-text notranslate"><div class="highlight"><pre><span></span>@from
-    # can only take one of these
+<div class="highlight-text notranslate"><div class="highlight"><pre><span></span>&gt;&gt;&gt; this is a comment
+@from
+    &gt;&gt;&gt; can only take one of these examples
     docker.io/ubuntu:20.04
-    /example.sif # only works for apptainer backend
-    %(__base__)
+    /example.sif    &gt;&gt;&gt; only works for apptainer backend
+    {{ __base__ }}  &gt;&gt;&gt; build on the previous image
 
-@pre # same as post but placed right after @from
-    # anything here is taken literally
-    # denote the start of a line with |
-    |echo &#39;Without tab&#39;
+@pre
+    &gt;&gt;&gt; anything here is taken literally
+    &gt;&gt;&gt; optionally denote the start of a line with | (helpful for white space)
+    echo &#39;Without tab&#39;
     |    echo &#39;With tab&#39;
 
-@arg
-    # define arg names
-    example_arg # reference this argument throughout the script with @(&lt;arg&gt;)
-
 @copy
-    # list files to copy, format &lt;src&gt; &lt;dest&gt;
+    &gt;&gt;&gt; list files to copy, format &lt;src&gt; &lt;dest&gt;
     /external/file /internal/file
 
 @run
-    # list of commands to run in container
+    &gt;&gt;&gt; list of commands to run in container
     echo &#39;Hello world&#39;
-    ?podman echo &#39;podman&#39;
-    ?apptainer echo &#39;apptainer&#39;
-    echo %(template_variable)
-    echo @(example_arg) # see @arg
+    ?? distro=podman |&gt; echo &#39;podman&#39; ??    &gt;&gt;&gt; conditional
+    ?? distro=apptainer |&gt; echo &#39;apptainer&#39; ??
+    echo {{ template_variable }}
+    echo @@ example_arg @@  &gt;&gt;&gt; define an argument
+    !envar TEST_VAR I want this here and in the @env section    &gt;&gt;&gt; the !envar directive
 
 @env
-    # set env variables
+    &gt;&gt;&gt; set env variables
     PATH /something:$PATH
 
 @label
-    # set container labels
-    velocity.image.%(__name__)__%(__tag__) %(__hash__)
-
+    &gt;&gt;&gt; set container labels
+    IMAGE_NAME {{ __name__ }}
 
 @entry
-    # set entrypoint or %runscript
-    # only one line allowed
+    &gt;&gt;&gt; set  ENTRYPOINT or %runscript
+    &gt;&gt;&gt; only one line allowed
+
     /bin/bash
 
-@post # same as pre but placed after everything else
+@post &gt;&gt;&gt; same as pre but placed after everything else
 </pre></div>
 </div>
 </div>
 <section id="variables">
 <span id="id1"></span><h2>Variables<a class="headerlink" href="#variables" title="Link to this heading"></a></h2>
 <p>The first thing that is done to a VTMP file is the substitution of any variables found in the script. Variables are indicated
-by <cite>%(&lt;variable&gt;)</cite>. In Velocity variables can be defined by the user in the <cite>specifications.yaml</cite> file, but Velocity also
+by <code class="docutils literal notranslate"><span class="pre">{{</span> <span class="pre">&lt;variable&gt;</span> <span class="pre">}}</span></code>. In Velocity variables can be defined by the user in the <cite>specs.yaml</cite> file, but Velocity also
 provides a set of build time variables.</p>
 <div class="highlight-text notranslate"><div class="highlight"><pre><span></span>__backend__
 __distro__
-__hash__        # template hash
-__base__        # previous image to build on
-__name__        # current image name e.g. cuda
+__base__        &gt;&gt;&gt; previous image to build on
+__name__        &gt;&gt;&gt; current image name e.g. cuda
 __system__
-__tag__         # image &quot;version&quot; e.g. 11.7.1
+__version__     &gt;&gt;&gt; image &quot;version&quot; e.g. 11.7.1
+__version_major__
+__version_minor__
+__version_patch__
+__version_suffix__
 __timestamp__
+&gt;&gt;&gt; the versions of all images in a build are also available in the following format
+__&lt;name&gt;__version__
+__&lt;name&gt;__version_major__
+__&lt;name&gt;__version_minor__
+__&lt;name&gt;__version_patch__
+__&lt;name&gt;__version_suffix__
 </pre></div>
 </div>
 </section>
+<section id="arguments">
+<h2>Arguments<a class="headerlink" href="#arguments" title="Link to this heading"></a></h2>
+<p>You can also pass in arguments at build time using the form <code class="docutils literal notranslate"><span class="pre">&#64;&#64;</span> <span class="pre">&lt;name&gt;</span> <span class="pre">&#64;&#64;</span></code>, but don’t forget to add the
+argument in <code class="docutils literal notranslate"><span class="pre">specs.yaml</span></code> so that is gets added to the build command or the build will fail.</p>
+</section>
+<section id="conditionals">
+<h2>Conditionals<a class="headerlink" href="#conditionals" title="Link to this heading"></a></h2>
+<p>If there is a line in a template that you only want under certain conditions use <code class="docutils literal notranslate"><span class="pre">??</span> <span class="pre">&lt;condition&gt;</span> <span class="pre">|&gt;</span> <span class="pre">&lt;text&gt;</span> <span class="pre">??</span></code>.
+The whole conditional will be replaced with the &lt;text&gt; section if the condition is true; otherwise, it will substitute
+an empty string. The conditionals can include the following components, <code class="docutils literal notranslate"><span class="pre">system=&lt;value&gt;</span></code>, <code class="docutils literal notranslate"><span class="pre">backend=&lt;value&gt;</span></code>,
+<code class="docutils literal notranslate"><span class="pre">distro=&lt;value&gt;</span></code> and a dependency in the form <code class="docutils literal notranslate"><span class="pre">^&lt;value&gt;</span></code>.</p>
+</section>
 <section id="sections">
 <h2>Sections<a class="headerlink" href="#sections" title="Link to this heading"></a></h2>
 <section id="from">
@@ -185,12 +204,6 @@ <h3>&#64;from<a class="headerlink" href="#from" title="Link to this heading">
 are where they are placed in the script the <cite>&#64;pre</cite> section is placed at the beginning of the script
 right after the <cite>&#64;from</cite> section.</p>
 </section>
-<section id="arg">
-<h3>&#64;arg<a class="headerlink" href="#arg" title="Link to this heading"></a></h3>
-<p>The <cite>&#64;arg</cite> section specifies build time arguments that are passed to the backend. If these arguments are not passed to
-the backend at build time it will fail. Once an arg has been defined in the <cite>&#64;arg</cite> section it can be referenced
-throughout the script with <cite>&#64;(&lt;argument&gt;)</cite>.</p>
-</section>
 <section id="copy">
 <h3>&#64;copy<a class="headerlink" href="#copy" title="Link to this heading"></a></h3>
 <p>The <cite>&#64;copy</cite> section takes a list of files/dir to be copied in the &lt;src&gt; &lt;dest&gt; format.</p>
@@ -198,12 +211,14 @@ <h3>&#64;copy<a class="headerlink" href="#copy" title="Link to this heading">
 <section id="run">
 <h3>&#64;run<a class="headerlink" href="#run" title="Link to this heading"></a></h3>
 <p>The <cite>&#64;run</cite> section takes a list of commands to be run in the container. These commands should be written as if they all
-occur one after the other in the same shell.</p>
+occur one after the other in the same shell. One added feature to the &#64;run section is the <code class="docutils literal notranslate"><span class="pre">!envar</span></code> directive. This
+directive will add the following variable definition to the &#64;env section as well as to the current &#64;run section. Use
+the format <code class="docutils literal notranslate"><span class="pre">!envar</span> <span class="pre">&lt;name&gt;</span> <span class="pre">&lt;value&gt;</span></code>.</p>
 </section>
 <section id="env">
 <h3>&#64;env<a class="headerlink" href="#env" title="Link to this heading"></a></h3>
 <p>The <cite>&#64;env</cite> section sets environment variables. These variables will only be available when the container is run or in
-the next build so if there is a variable that is needed in the run section you must declare it there as well.</p>
+the next build so if there is a variable that is needed in the run section use the <code class="docutils literal notranslate"><span class="pre">!envar</span></code> directive in the &#64;run section.</p>
 </section>
 <section id="label">
 <h3>&#64;label<a class="headerlink" href="#label" title="Link to this heading"></a></h3>
@@ -220,19 +235,14 @@ <h3>&#64;post<a class="headerlink" href="#post" title="Link to this heading">
 <p>See <a class="reference internal" href="#pre-section"><span class="std std-ref">&#64;pre</span></a>. The <cite>&#64;post</cite> section is placed at the end of the script after all other sections.</p>
 </section>
 </section>
-<section id="conditionals">
-<h2>Conditionals<a class="headerlink" href="#conditionals" title="Link to this heading"></a></h2>
-<p>It is handy somtimes to be able to limit certain commands to a backend(s) this can be done by placing a <cite>?&lt;backend&gt;</cite>
-at the beginning of the line in question.</p>
-</section>
 </section>
 
 
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     </div>
 
   <hr/>
diff --git a/docs/build/html/searchindex.js b/docs/build/html/searchindex.js
index 3de7bb0..61a2ffc 100644
--- a/docs/build/html/searchindex.js
+++ b/docs/build/html/searchindex.js
@@ -1 +1 @@
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\ No newline at end of file
diff --git a/docs/build/html/starting/basic.html b/docs/build/html/starting/basic.html
index fbf768d..b6b8dc3 100644
--- a/docs/build/html/starting/basic.html
+++ b/docs/build/html/starting/basic.html
@@ -49,23 +49,13 @@
               <ul class="current">
 <li class="toctree-l1 current"><a class="reference internal" href="index.html">Getting Started</a><ul class="current">
 <li class="toctree-l2 current"><a class="current reference internal" href="#">Overview</a><ul>
-<li class="toctree-l3"><a class="reference internal" href="#concept">Concept</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#how-it-works">How it Works</a></li>
-<li class="toctree-l3"><a class="reference internal" href="#layout">Layout</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#installation">Installation</a></li>
-<li class="toctree-l3"><a class="reference internal" href="#configuration">Configuration</a><ul>
-<li class="toctree-l4"><a class="reference internal" href="#velocity-image-dir"><cite>VELOCITY_IMAGE_DIR</cite></a></li>
-<li class="toctree-l4"><a class="reference internal" href="#velocity-system"><cite>VELOCITY_SYSTEM</cite></a></li>
-<li class="toctree-l4"><a class="reference internal" href="#velocity-backend"><cite>VELOCITY_BACKEND</cite></a></li>
-<li class="toctree-l4"><a class="reference internal" href="#velocity-distro"><cite>VELOCITY_DISTRO</cite></a></li>
-<li class="toctree-l4"><a class="reference internal" href="#velocity-build-dir"><cite>VELOCITY_BUILD_DIR</cite></a></li>
-</ul>
-</li>
+<li class="toctree-l3"><a class="reference internal" href="#configuration">Configuration</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#basic-usage">Basic Usage</a><ul>
 <li class="toctree-l4"><a class="reference internal" href="#avail"><cite>avail</cite></a></li>
 <li class="toctree-l4"><a class="reference internal" href="#spec"><cite>spec</cite></a></li>
 <li class="toctree-l4"><a class="reference internal" href="#build"><cite>build</cite></a></li>
-<li class="toctree-l4"><a class="reference internal" href="#edit"><cite>edit</cite></a></li>
 </ul>
 </li>
 </ul>
@@ -105,172 +95,119 @@
              
   <section id="overview">
 <h1>Overview<a class="headerlink" href="#overview" title="Link to this heading"></a></h1>
-<section id="concept">
-<h2>Concept<a class="headerlink" href="#concept" title="Link to this heading"></a></h2>
-<p>Velocity is a tool to help with the maintenance of a variety of container builds on multiple systems, backends
-(e.g podman or apptainer) and distros.</p>
-</section>
 <section id="how-it-works">
 <h2>How it Works<a class="headerlink" href="#how-it-works" title="Link to this heading"></a></h2>
-<p>Velocity works by building a set of containers in a chain so that the final container has all of the needed components.</p>
-</section>
-<section id="layout">
-<h2>Layout<a class="headerlink" href="#layout" title="Link to this heading"></a></h2>
-<p>The contents of the Velocity repo are fairly simple.</p>
-<div class="highlight-default notranslate"><div class="highlight"><pre><span></span>.
-├── docs
-├── lib
-├── README.md
-├── setup-env.sh
-└── velocity
-</pre></div>
-</div>
-<p>For informational purposes there is a folder <cite>docs</cite> which holds this documentation and a README file.
-The <cite>setup-env.sh</cite> script can be used to ‘install’ velocity. The lib folder holds a python package which the
-velocity script needs to run.</p>
+<p>Velocity works by building a set of containers in a chain so that the final container has all of the needed components.
+Velocity maintains a very hands off approach. It is only as good as the templates/configuration that you write.
+In general it will assume that a particular build will work unless you tell it otherwise. It is important to note
+that while Velocity has many features that are similar to those provided by a package manager, it is NOT a
+package manager. Rather it should be viewed as a templating and build orchestration tool.</p>
 </section>
 <section id="installation">
 <h2>Installation<a class="headerlink" href="#installation" title="Link to this heading"></a></h2>
-<p>First you will need to set up a conda environment for Velocity and install the following packages:</p>
-<div class="admonition note">
-<p class="admonition-title">Note</p>
-<p>For more info on creating a custom conda environment on OLCF systems visit <a class="reference external" href="https://docs.olcf.ornl.gov/software/python/index.html#custom-environments">https://docs.olcf.ornl.gov/software/python/index.html#custom-environments</a>.</p>
-</div>
-<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">conda</span> <span class="n">install</span> <span class="n">pyyaml</span> <span class="n">networkx</span> <span class="n">colorama</span> <span class="n">python</span><span class="o">-</span><span class="n">editor</span>
-</pre></div>
-</div>
-<div class="admonition important">
-<p class="admonition-title">Important</p>
-<p>If you wish to build the docs you will also need to install <cite>sphinx</cite> and <cite>sphinx-rtd-theme</cite>.</p>
-</div>
-<p>Next clone the Velocity git repository to the desired location.</p>
-<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>git<span class="w"> </span>clone<span class="w"> </span>https://gitlab.ccs.ornl.gov/saue-software/velocity.git
+<p>The easiest way to install velocity is to install prebuilt python packages using pip.</p>
+<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>pip<span class="w"> </span>install<span class="w"> </span>olcf-velocity
 </pre></div>
 </div>
-<p>You can then setup Velocity by sourcing the <cite>setup-env.sh</cite> script.</p>
-<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>.<span class="w"> </span>./velocity/setup-env.sh
+<p>You can also clone the velocity repository and build/install velocity from source.</p>
+<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>git<span class="w"> </span>clone<span class="w"> </span>https://github.com/olcf/velocity.git
+<span class="nb">cd</span><span class="w"> </span>velocity
+python3<span class="w"> </span>-m<span class="w"> </span>build
+<span class="c1"># install the built python wheel package</span>
+pip<span class="w"> </span>install<span class="w"> </span>dist/olcf-velocity-&lt;version&gt;*.whl
 </pre></div>
 </div>
-<p>The <cite>setup-env.sh</cite> script will help you choose the value of several environment <a class="reference internal" href="#configuration"><span class="std std-ref">variables</span></a>
-that velocity uses.</p>
-<p>You should now be able to run the <cite>velocity</cite> command.</p>
-<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>user@hostname:~$<span class="w"> </span><span class="nv">velocity</span>
-<span class="o">==</span>&gt;<span class="w"> </span>System:<span class="w"> </span><span class="nv">x86_64</span>
-<span class="o">==</span>&gt;<span class="w"> </span>Backend:<span class="w"> </span><span class="nv">podman</span>
-<span class="o">==</span>&gt;<span class="w"> </span>Distro:<span class="w"> </span>fedora
+<p>Now you can use Velocity as a python module! We recommend setting a bash alias for convenience.</p>
+<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>user@hostname:~$<span class="w"> </span><span class="nb">alias</span><span class="w"> </span><span class="nv">velocity</span><span class="o">=</span><span class="s2">&quot;python3 -m velocity&quot;</span>
+user@hostname:~$<span class="w"> </span>velocity
+usage:<span class="w"> </span>velocity<span class="w"> </span><span class="o">[</span>-h<span class="o">]</span><span class="w"> </span><span class="o">[</span>-v<span class="o">]</span><span class="w"> </span><span class="o">[</span>-D<span class="w"> </span><span class="o">{</span>TRACE,DEBUG,INFO,SUCCESS,WARNING,ERROR,CRITICAL<span class="o">}]</span><span class="w"> </span><span class="o">[</span>-b<span class="w"> </span>BACKEND<span class="o">]</span><span class="w"> </span><span class="o">[</span>-s<span class="w"> </span>SYSTEM<span class="o">]</span><span class="w"> </span><span class="o">[</span>-d<span class="w"> </span>DISTRO<span class="o">]</span><span class="w"> </span><span class="o">{</span>build,avail,spec<span class="o">}</span><span class="w"> </span>...
 
-usage:<span class="w"> </span>velocity<span class="w"> </span><span class="o">[</span>-h<span class="o">]</span><span class="w"> </span><span class="o">[</span>-v<span class="o">]</span><span class="w"> </span><span class="o">[</span>-b<span class="w"> </span>BACKEND<span class="o">]</span><span class="w"> </span><span class="o">[</span>-s<span class="w"> </span>SYSTEM<span class="o">]</span><span class="w"> </span><span class="o">[</span>-d<span class="w"> </span>DISTRO<span class="o">]</span>
-<span class="w">                </span><span class="o">{</span>build,avail,spec,edit<span class="o">}</span><span class="w"> </span>...
-
-Build<span class="w"> </span>tool<span class="w"> </span><span class="k">for</span><span class="w"> </span>OLCF<span class="w"> </span>containers
+build<span class="w"> </span>tool<span class="w"> </span><span class="k">for</span><span class="w"> </span>OLCF<span class="w"> </span>containers
 
 positional<span class="w"> </span>arguments:
-<span class="w">  </span><span class="o">{</span>build,avail,spec,edit<span class="o">}</span>
+<span class="w">  </span><span class="o">{</span>build,avail,spec<span class="o">}</span>
 <span class="w">    </span>build<span class="w">               </span>build<span class="w"> </span>specified<span class="w"> </span>container<span class="w"> </span>image
 <span class="w">    </span>avail<span class="w">               </span>lookup<span class="w"> </span>available<span class="w"> </span>images
 <span class="w">    </span>spec<span class="w">                </span>lookup<span class="w"> </span>image<span class="w"> </span>dependencies
-<span class="w">    </span>edit<span class="w">                </span>edit<span class="w"> </span>image<span class="w"> </span>files
 
 options:
 <span class="w">  </span>-h,<span class="w"> </span>--help<span class="w">            </span>show<span class="w"> </span>this<span class="w"> </span><span class="nb">help</span><span class="w"> </span>message<span class="w"> </span>and<span class="w"> </span><span class="nb">exit</span>
 <span class="w">  </span>-v,<span class="w"> </span>--version<span class="w">         </span>program<span class="w"> </span>version
+<span class="w">  </span>-D<span class="w"> </span><span class="o">{</span>TRACE,DEBUG,INFO,SUCCESS,WARNING,ERROR,CRITICAL<span class="o">}</span>,<span class="w"> </span>--debug<span class="w"> </span><span class="o">{</span>TRACE,DEBUG,INFO,SUCCESS,WARNING,ERROR,CRITICAL<span class="o">}</span>
+<span class="w">                        </span><span class="nb">set</span><span class="w"> </span>debug<span class="w"> </span>output<span class="w"> </span>level
 <span class="w">  </span>-b<span class="w"> </span>BACKEND,<span class="w"> </span>--backend<span class="w"> </span>BACKEND
 <span class="w">  </span>-s<span class="w"> </span>SYSTEM,<span class="w"> </span>--system<span class="w"> </span>SYSTEM
 <span class="w">  </span>-d<span class="w"> </span>DISTRO,<span class="w"> </span>--distro<span class="w"> </span>DISTRO
 
-See<span class="w"> </span><span class="o">(</span>https://gitlab.ccs.ornl.gov/saue-software/velocity<span class="o">)</span>
+See<span class="w"> </span>https://github.com/olcf/velocity
 </pre></div>
 </div>
 </section>
 <section id="configuration">
 <span id="id1"></span><h2>Configuration<a class="headerlink" href="#configuration" title="Link to this heading"></a></h2>
-<p>There are five system variables that need to be set for Velocity to work (these are set in the <cite>setup-env.sh</cite> script).</p>
-<section id="velocity-image-dir">
-<h3><cite>VELOCITY_IMAGE_DIR</cite><a class="headerlink" href="#velocity-image-dir" title="Link to this heading"></a></h3>
-<p>This variable points to the directory containing the the image definitions.</p>
+<p>Velocity has a number of configuration options. The basic ones are setting the system name, container backend,
+container distro, the path(s) to your image definitions and the build scratch directory.
+To see more configuration options go to the <a class="reference internal" href="../reference/config.html"><span class="doc">configuration</span></a> page. The easiest way to configure velocity is to
+edit <code class="docutils literal notranslate"><span class="pre">~/.velocity/config.yaml</span></code>.</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">velocity</span><span class="p">:</span>
+  <span class="n">system</span><span class="p">:</span> <span class="n">frontier</span>
+  <span class="n">backend</span><span class="p">:</span> <span class="n">apptainer</span>
+  <span class="n">distro</span><span class="p">:</span> <span class="n">ubuntu</span>
+  <span class="n">image_path</span><span class="p">:</span> <span class="c1"># a list of : seperated paths</span>
+  <span class="n">build_dir</span><span class="p">:</span> <span class="c1"># path to a scratch space</span>
+</pre></div>
+</div>
 <div class="admonition note">
 <p class="admonition-title">Note</p>
 <p>Image definitions can be created by the user as needed but a base set for usage at OLCF are provided at
-<cite>https://gitlab.ccs.ornl.gov/saue-software/velocity-images.git</cite></p>
+<a class="reference external" href="https://github.com/olcf/velocity-images">https://github.com/olcf/velocity-images</a></p>
 </div>
 </section>
-<section id="velocity-system">
-<h3><cite>VELOCITY_SYSTEM</cite><a class="headerlink" href="#velocity-system" title="Link to this heading"></a></h3>
-<p>This variable specifies what computer system you are building for (e.g. frontier).</p>
-</section>
-<section id="velocity-backend">
-<h3><cite>VELOCITY_BACKEND</cite><a class="headerlink" href="#velocity-backend" title="Link to this heading"></a></h3>
-<p>This variable specifies the container backend that should be used (e.g podman).</p>
-</section>
-<section id="velocity-distro">
-<h3><cite>VELOCITY_DISTRO</cite><a class="headerlink" href="#velocity-distro" title="Link to this heading"></a></h3>
-<p>This variable specifies the distro of the container images that will be built.</p>
-</section>
-<section id="velocity-build-dir">
-<h3><cite>VELOCITY_BUILD_DIR</cite><a class="headerlink" href="#velocity-build-dir" title="Link to this heading"></a></h3>
-<p>This variable specifies a scratch space for Velocity to preform builds in.</p>
-</section>
-</section>
 <section id="basic-usage">
 <h2>Basic Usage<a class="headerlink" href="#basic-usage" title="Link to this heading"></a></h2>
 <section id="avail">
 <h3><cite>avail</cite><a class="headerlink" href="#avail" title="Link to this heading"></a></h3>
 <p>The <cite>avail</cite> command prints the defined images that can be built.</p>
 <div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>user@hostname:~$<span class="w"> </span>velocity<span class="w"> </span><span class="nv">avail</span>
-<span class="o">==</span>&gt;<span class="w"> </span>System:<span class="w"> </span><span class="nv">x86_64</span>
-<span class="o">==</span>&gt;<span class="w"> </span>Backend:<span class="w"> </span><span class="nv">podman</span>
-<span class="o">==</span>&gt;<span class="w"> </span>Distro:<span class="w"> </span><span class="nv">centos</span>
-
-<span class="o">==</span>&gt;<span class="w"> </span>centos
-<span class="w">        </span><span class="nv">stream8</span>
 <span class="o">==</span>&gt;<span class="w"> </span>gcc
-<span class="w">        </span><span class="m">11</span>.2.0
-<span class="o">==</span>&gt;<span class="w"> </span>hmmer
-<span class="w">        </span><span class="m">3</span>.4
-<span class="o">==</span>&gt;<span class="w"> </span>kalign
-<span class="w">        </span><span class="m">3</span>.4.0
-<span class="o">==</span>&gt;<span class="w"> </span>miniforge3
-<span class="w">        </span><span class="m">23</span>.11.0
-<span class="o">==</span>&gt;<span class="w"> </span>python
-<span class="w">        </span><span class="m">3</span>.11.8
-<span class="o">==</span>&gt;<span class="w"> </span>pytorch
-<span class="w">        </span>latest
+<span class="w">    </span><span class="m">12</span>.3.0
+<span class="w">    </span><span class="m">13</span>.2.0
+<span class="w">    </span><span class="m">14</span>.1.0
+<span class="o">==</span>&gt;<span class="w"> </span>mpich
+<span class="w">    </span><span class="m">3</span>.4.3
+<span class="o">==</span>&gt;<span class="w"> </span>rocm
+<span class="w">    </span><span class="m">5</span>.7.1
+<span class="o">==</span>&gt;<span class="w"> </span>ubuntu
+<span class="w">    </span><span class="m">20</span>.04
+<span class="w">    </span><span class="m">22</span>.04
+<span class="w">    </span><span class="m">24</span>.04
 </pre></div>
 </div>
-<p>Each image is listed and then indented underneath is a list of the available versions
-(in velocity they are called tags).</p>
+<p>Each image is listed and then indented underneath is a list of the available versions.</p>
 </section>
 <section id="spec">
 <h3><cite>spec</cite><a class="headerlink" href="#spec" title="Link to this heading"></a></h3>
 <p>The <cite>spec</cite> command shows the dependencies for a given image (or list of images) in a tree like structure.</p>
-<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>user@hostname:~$<span class="w"> </span>velocity<span class="w"> </span>spec<span class="w"> </span><span class="nv">pytorch</span>
-<span class="o">==</span>&gt;<span class="w"> </span>System:<span class="w"> </span><span class="nv">summit</span>
-<span class="o">==</span>&gt;<span class="w"> </span>Backend:<span class="w"> </span><span class="nv">podman</span>
-<span class="o">==</span>&gt;<span class="w"> </span>Distro:<span class="w"> </span>centos
-
-<span class="w">  </span>&gt;<span class="w"> </span>pytorch@<span class="o">=</span>latest
-<span class="w">     </span>^cuda@<span class="o">=</span><span class="m">11</span>.7.1
-<span class="w">        </span>^centos@<span class="o">=</span>stream8
-<span class="w">     </span>^cudnn@<span class="o">=</span><span class="m">8</span>.5.0.96
-<span class="w">        </span>^cuda@<span class="o">=</span><span class="m">11</span>.7.1
-<span class="w">           </span>^centos@<span class="o">=</span>stream8
-<span class="w">     </span>^spectrum-mpi@<span class="o">=</span><span class="m">10</span>.4.0.6
-<span class="w">        </span>^centos@<span class="o">=</span>stream8
-<span class="w">     </span>^gcc@<span class="o">=</span><span class="m">11</span>.2.0
-<span class="w">        </span>^centos@<span class="o">=</span>stream8
-<span class="w">     </span>^miniforge3@<span class="o">=</span><span class="m">23</span>.11.0
-<span class="w">        </span>^centos@<span class="o">=</span>stream8
+<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>user@hostname:~$<span class="w"> </span>velocity<span class="w"> </span>spec<span class="w"> </span>pytorch
+<span class="w">  </span>&gt;<span class="w"> </span>pytorch@latest
+<span class="w">     </span>^cuda@11.7.1
+<span class="w">        </span>^centos@stream8
+<span class="w">     </span>^cudnn@8.5.0.96
+<span class="w">        </span>^cuda@11.7.1
+<span class="w">           </span>^centos@stream8
+<span class="w">     </span>^spectrum-mpi@10.4.0.6
+<span class="w">        </span>^centos@stream8
+<span class="w">     </span>^gcc@11.2.0
+<span class="w">        </span>^centos@stream8
+<span class="w">     </span>^miniforge3@23.11.0
+<span class="w">        </span>^centos@stream8
 </pre></div>
 </div>
 </section>
 <section id="build">
 <h3><cite>build</cite><a class="headerlink" href="#build" title="Link to this heading"></a></h3>
-<p>The <cite>build</cite> can be used to build an container image from one or more image definitions.</p>
+<p>The <cite>build</cite> command can be used to build an container image from one or more image definitions.</p>
 <div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>user@hostname:~$<span class="w"> </span>velocity<span class="w"> </span>build<span class="w"> </span><span class="nv">centos</span>
-<span class="o">==</span>&gt;<span class="w"> </span>System:<span class="w"> </span><span class="nv">x86_64</span>
-<span class="o">==</span>&gt;<span class="w"> </span>Backend:<span class="w"> </span><span class="nv">podman</span>
-<span class="o">==</span>&gt;<span class="w"> </span>Distro:<span class="w"> </span><span class="nv">centos</span>
-
 <span class="o">==</span>&gt;<span class="w"> </span>Build<span class="w"> </span>Order:
 <span class="w">        </span>centos@<span class="o">=</span><span class="nv">stream8</span>
 
@@ -282,10 +219,6 @@ <h3><cite>build</cite><a class="headerlink" href="#build" title="Link to this he
 </div>
 <p>Both the spec and the build command can also take a list of images.</p>
 <div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>user@hostname:~$<span class="w"> </span>velocity<span class="w"> </span>build<span class="w"> </span>gcc<span class="w"> </span><span class="nv">python</span>
-<span class="o">==</span>&gt;<span class="w"> </span>System:<span class="w"> </span><span class="nv">x86_64</span>
-<span class="o">==</span>&gt;<span class="w"> </span>Backend:<span class="w"> </span><span class="nv">podman</span>
-<span class="o">==</span>&gt;<span class="w"> </span>Distro:<span class="w"> </span><span class="nv">centos</span>
-
 <span class="o">==</span>&gt;<span class="w"> </span>Build<span class="w"> </span>Order:
 <span class="w">        </span>centos@<span class="o">=</span>stream8
 <span class="w">        </span>gcc@<span class="o">=</span><span class="m">11</span>.2.0
@@ -308,22 +241,6 @@ <h3><cite>build</cite><a class="headerlink" href="#build" title="Link to this he
 </pre></div>
 </div>
 </section>
-<section id="edit">
-<h3><cite>edit</cite><a class="headerlink" href="#edit" title="Link to this heading"></a></h3>
-<p>The edit command can be used to edit the VTMP or specification file for an image. By default
-it edits the VTMP file. Add <cite>-s</cite> to edit the <cite>specifications.yaml</cite> file.</p>
-<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>user@hostname:~$<span class="w"> </span>velocity<span class="w"> </span>edit<span class="w"> </span>--help
-usage:<span class="w"> </span>velocity<span class="w"> </span>edit<span class="w"> </span><span class="o">[</span>-h<span class="o">]</span><span class="w"> </span><span class="o">[</span>-s<span class="o">]</span><span class="w"> </span>target
-
-positional<span class="w"> </span>arguments:
-<span class="w">  </span>target<span class="w">               </span>image<span class="w"> </span>to<span class="w"> </span>edit
-
-options:
-<span class="w">  </span>-h,<span class="w"> </span>--help<span class="w">           </span>show<span class="w"> </span>this<span class="w"> </span><span class="nb">help</span><span class="w"> </span>message<span class="w"> </span>and<span class="w"> </span><span class="nb">exit</span>
-<span class="w">  </span>-s,<span class="w"> </span>--specification<span class="w">  </span>edit<span class="w"> </span>the<span class="w"> </span>specifications<span class="w"> </span>file
-</pre></div>
-</div>
-</section>
 </section>
 </section>
 
diff --git a/docs/build/html/starting/index.html b/docs/build/html/starting/index.html
index e1d9292..646b622 100644
--- a/docs/build/html/starting/index.html
+++ b/docs/build/html/starting/index.html
@@ -23,7 +23,7 @@
     <link rel="index" title="Index" href="../genindex.html" />
     <link rel="search" title="Search" href="../search.html" />
     <link rel="next" title="Overview" href="basic.html" />
-    <link rel="prev" title="Velocity Container Build System" href="../index.html" /> 
+    <link rel="prev" title="Velocity Container Build Management" href="../index.html" /> 
 </head>
 
 <body class="wy-body-for-nav"> 
@@ -86,16 +86,13 @@ <h1>Getting Started<a class="headerlink" href="#getting-started" title="Link to
 <div class="toctree-wrapper compound">
 <ul>
 <li class="toctree-l1"><a class="reference internal" href="basic.html">Overview</a><ul>
-<li class="toctree-l2"><a class="reference internal" href="basic.html#concept">Concept</a></li>
 <li class="toctree-l2"><a class="reference internal" href="basic.html#how-it-works">How it Works</a></li>
-<li class="toctree-l2"><a class="reference internal" href="basic.html#layout">Layout</a></li>
 <li class="toctree-l2"><a class="reference internal" href="basic.html#installation">Installation</a></li>
 <li class="toctree-l2"><a class="reference internal" href="basic.html#configuration">Configuration</a></li>
 <li class="toctree-l2"><a class="reference internal" href="basic.html#basic-usage">Basic Usage</a></li>
 </ul>
 </li>
 <li class="toctree-l1"><a class="reference internal" href="tutorial.html">Creating Your First Image</a><ul>
-<li class="toctree-l2"><a class="reference internal" href="tutorial.html#prerequisites">Prerequisites</a></li>
 <li class="toctree-l2"><a class="reference internal" href="tutorial.html#base-image">Base Image</a></li>
 <li class="toctree-l2"><a class="reference internal" href="tutorial.html#adding-different-versions">Adding Different Versions</a></li>
 <li class="toctree-l2"><a class="reference internal" href="tutorial.html#specifying-version">Specifying Version</a></li>
@@ -110,7 +107,7 @@ <h1>Getting Started<a class="headerlink" href="#getting-started" title="Link to
            </div>
           </div>
           <footer><div class="rst-footer-buttons" role="navigation" aria-label="Footer">
-        <a href="../index.html" class="btn btn-neutral float-left" title="Velocity Container Build System" accesskey="p" rel="prev"><span class="fa fa-arrow-circle-left" aria-hidden="true"></span> Previous</a>
+        <a href="../index.html" class="btn btn-neutral float-left" title="Velocity Container Build Management" accesskey="p" rel="prev"><span class="fa fa-arrow-circle-left" aria-hidden="true"></span> Previous</a>
         <a href="basic.html" class="btn btn-neutral float-right" title="Overview" accesskey="n" rel="next">Next <span class="fa fa-arrow-circle-right" aria-hidden="true"></span></a>
     </div>
 
diff --git a/docs/build/html/starting/tutorial.html b/docs/build/html/starting/tutorial.html
index ee81774..1af710d 100644
--- a/docs/build/html/starting/tutorial.html
+++ b/docs/build/html/starting/tutorial.html
@@ -50,7 +50,6 @@
 <li class="toctree-l1 current"><a class="reference internal" href="index.html">Getting Started</a><ul class="current">
 <li class="toctree-l2"><a class="reference internal" href="basic.html">Overview</a></li>
 <li class="toctree-l2 current"><a class="current reference internal" href="#">Creating Your First Image</a><ul>
-<li class="toctree-l3"><a class="reference internal" href="#prerequisites">Prerequisites</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#base-image">Base Image</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#adding-different-versions">Adding Different Versions</a></li>
 <li class="toctree-l3"><a class="reference internal" href="#specifying-version">Specifying Version</a></li>
@@ -91,426 +90,278 @@
              
   <section id="creating-your-first-image">
 <h1>Creating Your First Image<a class="headerlink" href="#creating-your-first-image" title="Link to this heading"></a></h1>
-<section id="prerequisites">
-<h2>Prerequisites<a class="headerlink" href="#prerequisites" title="Link to this heading"></a></h2>
-<p>You will need to have the Velocity repo cloned and the following environment variables set. You can do this by
-sourcing the <cite>setup-env.sh</cite> script.</p>
-<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span><span class="nv">VELOCITY_IMAGE_DIR</span><span class="o">=</span>&lt;path<span class="w"> </span>to<span class="w"> </span>image<span class="w"> </span>dir&gt;
-<span class="nv">VELOCITY_BACKEND</span><span class="o">=</span>podman<span class="w"> </span><span class="c1"># if you use apptainer you will need to make changes to some of the examples</span>
-<span class="nv">VELOCITY_BUILD_DIR</span><span class="o">=</span>/tmp/velocity/build
-<span class="nv">VELOCITY_SYSTEM</span><span class="o">=</span>x86_64<span class="w">  </span><span class="c1"># if you use a different system name you will need to make changes to some of the examples</span>
-<span class="nv">VELOCITY_ROOT</span><span class="o">=</span>&lt;git<span class="w"> </span>repo&gt;<span class="w"> </span><span class="c1"># you will also need to add this to PATH</span>
-<span class="nv">VELOCITY_DISTRO</span><span class="o">=</span>fedora
-</pre></div>
-</div>
-</section>
 <section id="base-image">
 <h2>Base Image<a class="headerlink" href="#base-image" title="Link to this heading"></a></h2>
-<p>Let’s start with a simple base image. This image will pull an fedora docker image and update the packages.
-Start by creating a directory in the image directory called <cite>fedora</cite> (for this tutorial we are starting with an empty
-image directory). Next we need to create a directory in the <cite>fedora</cite> directory for the version of fedora that we want.
-Let’s use <cite>38</cite>. In this directory create a file called <cite>specifications.yaml</cite> and a directory called <cite>templates</cite> with
-a file named <cite>fedora.vtmp</cite>. Your image directory and files should now look like this.</p>
+<p>Let’s start with a simple base image. This image will pull an fedora docker image and update the packages. For this
+tutorial I have created the empty directory <code class="docutils literal notranslate"><span class="pre">/tmp/velocity/images</span></code> and configured it as the image directory. I have set
+the build directory to <code class="docutils literal notranslate"><span class="pre">/tmp/velocity/build</span></code>, the backend to <code class="docutils literal notranslate"><span class="pre">apptainer</span></code> and the distro as <code class="docutils literal notranslate"><span class="pre">fedora</span></code>. All
+commands are run in <code class="docutils literal notranslate"><span class="pre">/tmp/velocity</span></code>.
+Start by creating a directory in the image directory called <code class="docutils literal notranslate"><span class="pre">fedora</span></code>. In this directory create a file called
+<code class="docutils literal notranslate"><span class="pre">specs.yaml</span></code> and a directory called <code class="docutils literal notranslate"><span class="pre">templates</span></code> with
+a file named <code class="docutils literal notranslate"><span class="pre">default.vtmp</span></code>. Your image directory and files should now look like this.</p>
 <div class="literal-block-wrapper docutils container" id="id1">
-<div class="code-block-caption"><span class="caption-text">VELOCITY_IMAGE_DIR</span><a class="headerlink" href="#id1" title="Link to this code"></a></div>
-<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>.
-└──<span class="w"> </span>fedora
-<span class="w">    </span>└──<span class="w"> </span><span class="m">38</span>
-<span class="w">        </span>├──<span class="w"> </span>specifications.yaml
-<span class="w">        </span>└──<span class="w"> </span>templates
-<span class="w">            </span>└──<span class="w"> </span>fedora.vtmp
+<div class="code-block-caption"><span class="caption-text">/tmp/velocity/images</span><a class="headerlink" href="#id1" title="Link to this code"></a></div>
+<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>fedora
+├──<span class="w"> </span>specs.yaml
+└──<span class="w"> </span>templates
+<span class="w">    </span>└──<span class="w"> </span>default.vtmp
 </pre></div>
 </div>
 </div>
 <div class="literal-block-wrapper docutils container" id="id2">
-<div class="code-block-caption"><span class="caption-text">fedora/38/specifications.yaml</span><a class="headerlink" href="#id2" title="Link to this code"></a></div>
-<div class="highlight-yaml notranslate"><div class="highlight"><pre><span></span><span class="nt">build_specifications</span><span class="p">:</span>
-
-<span class="w">  </span><span class="nt">x86_64</span><span class="p">:</span>
-<span class="w">    </span><span class="nt">podman</span><span class="p">:</span>
-<span class="w">      </span><span class="nt">fedora</span><span class="p">:</span><span class="w"> </span><span class="p p-Indicator">{}</span>
+<div class="code-block-caption"><span class="caption-text">specs.yaml</span><a class="headerlink" href="#id2" title="Link to this code"></a></div>
+<div class="highlight-yaml notranslate"><div class="highlight"><pre><span></span><span class="nt">versions</span><span class="p">:</span>
+<span class="w">  </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">spec</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">38</span>
+<span class="w">    </span><span class="nt">when</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">distro=fedora</span>
 </pre></div>
 </div>
 </div>
 <div class="literal-block-wrapper docutils container" id="id3">
-<div class="code-block-caption"><span class="caption-text">fedora/38/templates/fedora.vtmp</span><a class="headerlink" href="#id3" title="Link to this code"></a></div>
+<div class="code-block-caption"><span class="caption-text">default.vtmp</span><a class="headerlink" href="#id3" title="Link to this code"></a></div>
 <div class="highlight-text notranslate"><div class="highlight"><pre><span></span>@from
-    docker.io/fedora:38
+    docker.io/fedora:{{ __version__ }}
 
 @run
     dnf -y upgrade
-
-@label
-    velocity.config.system %(__system__)
-    velocity.config.backend %(__backend__)
-    velocity.config.distro %(__distro__)
-    velocity.image.%(__name__)__%(__tag__) %(__hash__)
+    dnf clean all
 </pre></div>
 </div>
 </div>
 <p>Now if you run <cite>velocity avail</cite> you should get the following.</p>
 <div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>user@hostname:~$<span class="w"> </span>velocity<span class="w"> </span><span class="nv">avail</span>
-<span class="o">==</span>&gt;<span class="w"> </span>System:<span class="w"> </span><span class="nv">x86_64</span>
-<span class="o">==</span>&gt;<span class="w"> </span>Backend:<span class="w"> </span><span class="nv">podman</span>
-<span class="o">==</span>&gt;<span class="w"> </span>Distro:<span class="w"> </span><span class="nv">fedora</span>
-
 <span class="o">==</span>&gt;<span class="w"> </span>fedora
-<span class="w">        </span><span class="m">38</span>
+<span class="w">    </span><span class="m">38</span>
 </pre></div>
 </div>
 <p>Now build the image.</p>
 <div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>user@hostname:~$<span class="w"> </span>velocity<span class="w"> </span>build<span class="w"> </span><span class="nv">fedora</span>
-<span class="o">==</span>&gt;<span class="w"> </span>System:<span class="w"> </span><span class="nv">x86_64</span>
-<span class="o">==</span>&gt;<span class="w"> </span>Backend:<span class="w"> </span><span class="nv">podman</span>
-<span class="o">==</span>&gt;<span class="w"> </span>Distro:<span class="w"> </span><span class="nv">fedora</span>
-
 <span class="o">==</span>&gt;<span class="w"> </span>Build<span class="w"> </span>Order:
-<span class="w">        </span>fedora@<span class="o">=</span><span class="nv">38</span>
+<span class="w">    </span>fedora@38-aa51aa7
+
+<span class="o">==</span>&gt;<span class="w"> </span>aa51aa7:<span class="w"> </span>BUILD<span class="w"> </span>fedora@38<span class="w"> </span>...
+<span class="o">==</span>&gt;<span class="w"> </span>aa51aa7:<span class="w"> </span>GENERATING<span class="w"> </span>SCRIPT<span class="w"> </span>...
+<span class="o">==</span>&gt;<span class="w"> </span>aa51aa7:<span class="w"> </span>BUILDING<span class="w"> </span>...
+<span class="o">==</span>&gt;<span class="w"> </span>aa51aa7:<span class="w"> </span>IMAGE<span class="w"> </span>/tmp/velocity/build/fedora-38-aa51aa7/aa51aa7.sif<span class="w"> </span><span class="o">(</span>fedora@38<span class="o">)</span><span class="w"> </span>BUILT<span class="w"> </span><span class="o">[</span><span class="m">0</span>:01:07<span class="o">]</span>
 
-<span class="o">==</span>&gt;<span class="w"> </span>yftozouc:<span class="w"> </span>BUILD<span class="w"> </span>fedora@<span class="o">=</span><span class="m">38</span><span class="w"> </span>...
-<span class="o">==</span>&gt;<span class="w"> </span>yftozouc:<span class="w"> </span>GENERATING<span class="w"> </span>SCRIPT<span class="w"> </span>...
-<span class="o">==</span>&gt;<span class="w"> </span>yftozouc:<span class="w"> </span>BUILDING<span class="w"> </span>...
-<span class="o">==</span>&gt;<span class="w"> </span>yftozouc:<span class="w"> </span>IMAGE<span class="w"> </span>localhost/fedora__38__x86_64__fedora:latest<span class="w"> </span><span class="o">(</span>fedora@<span class="o">=</span><span class="m">38</span><span class="o">)</span><span class="w"> </span>BUILT<span class="w"> </span><span class="o">[</span><span class="m">0</span>:07:10<span class="o">]</span>
+<span class="o">==</span>&gt;<span class="w"> </span>BUILT:<span class="w"> </span>/tmp/velocity/fedora-38__x86_64-fedora.sif
 </pre></div>
 </div>
 <p>If you wish to see more output you can add the <cite>-v</cite> flag:</p>
 <div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>user@hostname:~$<span class="w"> </span>velocity<span class="w"> </span>build<span class="w"> </span>fedora<span class="w"> </span>-v
-<span class="o">==</span>&gt;<span class="w"> </span>System:<span class="w"> </span><span class="nv">x86_64</span>
-<span class="o">==</span>&gt;<span class="w"> </span>Backend:<span class="w"> </span><span class="nv">podman</span>
-<span class="o">==</span>&gt;<span class="w"> </span>Distro:<span class="w"> </span><span class="nv">fedora</span>
-
 <span class="o">==</span>&gt;<span class="w"> </span>Build<span class="w"> </span>Order:
-<span class="w">        </span>fedora@<span class="o">=</span><span class="nv">38</span>
-
-<span class="o">==</span>&gt;<span class="w"> </span>xuoykrdt:<span class="w"> </span>BUILD<span class="w"> </span>fedora@<span class="o">=</span><span class="m">38</span><span class="w"> </span>...
-<span class="o">==</span>&gt;<span class="w"> </span>xuoykrdt:<span class="w"> </span>GENERATING<span class="w"> </span>SCRIPT<span class="w"> </span>...
-<span class="w">        </span>SCRIPT:<span class="w"> </span>/tmp/velocity/build/xuoykrdt/script
-<span class="w">        </span>FROM<span class="w"> </span>docker.io/fedora:38
-
-<span class="w">        </span>RUN<span class="w"> </span>dnf<span class="w"> </span>-y<span class="w"> </span>upgrade
-
-<span class="w">        </span>LABEL<span class="w"> </span>velocity.config.system<span class="o">=</span><span class="s2">&quot;x86_64&quot;</span><span class="w"> </span><span class="se">\</span>
-<span class="w">            </span>velocity.config.backend<span class="o">=</span><span class="s2">&quot;podman&quot;</span><span class="w"> </span><span class="se">\</span>
-<span class="w">            </span>velocity.config.distro<span class="o">=</span><span class="s2">&quot;fedora&quot;</span><span class="w"> </span><span class="se">\</span>
-<span class="w">            </span>velocity.image.fedora__38<span class="o">=</span><span class="s2">&quot;ff9fa85cf102560cf3fe2014c3c758fbb3809247537abbeab2c4b67c62dda164&quot;</span>
-
-<span class="o">==</span>&gt;<span class="w"> </span>xuoykrdt:<span class="w"> </span>BUILDING<span class="w"> </span>...
-<span class="w">        </span><span class="c1">#!/usr/bin/env bash</span>
-<span class="w">        </span>podman<span class="w"> </span>build<span class="w"> </span>-f<span class="w"> </span>/tmp/velocity/build/xuoykrdt/script<span class="w"> </span>-t<span class="w"> </span>localhost/fedora__38__x86_64__fedora:latest<span class="w"> </span>.<span class="p">;</span>
-<span class="w">        </span>STEP<span class="w"> </span><span class="m">1</span>/3:<span class="w"> </span>FROM<span class="w"> </span>docker.io/fedora:38
-<span class="w">        </span>STEP<span class="w"> </span><span class="m">2</span>/3:<span class="w"> </span>RUN<span class="w"> </span>dnf<span class="w"> </span>-y<span class="w"> </span>upgrade
-<span class="w">        </span>Fedora<span class="w"> </span><span class="m">38</span><span class="w"> </span>-<span class="w"> </span>x86_64<span class="w">                              </span><span class="m">131</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">84</span><span class="w"> </span>MB<span class="w">     </span><span class="m">10</span>:53
-<span class="w">        </span>Fedora<span class="w"> </span><span class="m">38</span><span class="w"> </span>openh264<span class="w"> </span><span class="o">(</span>From<span class="w"> </span>Cisco<span class="o">)</span><span class="w"> </span>-<span class="w"> </span>x86_64<span class="w">        </span><span class="m">2</span>.9<span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">2</span>.6<span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span>Fedora<span class="w"> </span>Modular<span class="w"> </span><span class="m">38</span><span class="w"> </span>-<span class="w"> </span>x86_64<span class="w">                      </span><span class="m">1</span>.1<span class="w"> </span>MB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">2</span>.8<span class="w"> </span>MB<span class="w">     </span><span class="m">00</span>:02
-<span class="w">        </span>Fedora<span class="w"> </span><span class="m">38</span><span class="w"> </span>-<span class="w"> </span>x86_64<span class="w"> </span>-<span class="w"> </span>Updates<span class="w">                    </span><span class="m">4</span>.5<span class="w"> </span>MB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">40</span><span class="w"> </span>MB<span class="w">     </span><span class="m">00</span>:09
-<span class="w">        </span>Fedora<span class="w"> </span>Modular<span class="w"> </span><span class="m">38</span><span class="w"> </span>-<span class="w"> </span>x86_64<span class="w"> </span>-<span class="w"> </span>Updates<span class="w">            </span><span class="m">152</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">2</span>.1<span class="w"> </span>MB<span class="w">     </span><span class="m">00</span>:14
-<span class="w">        </span>Last<span class="w"> </span>metadata<span class="w"> </span>expiration<span class="w"> </span>check:<span class="w"> </span><span class="m">0</span>:00:01<span class="w"> </span>ago<span class="w"> </span>on<span class="w"> </span>Wed<span class="w"> </span>Mar<span class="w"> </span><span class="m">27</span><span class="w"> </span><span class="m">20</span>:09:54<span class="w"> </span><span class="m">2024</span>.
-<span class="w">        </span>Dependencies<span class="w"> </span>resolved.
-<span class="w">        </span><span class="o">================================================================================</span>
-<span class="w">         </span>Package<span class="w">                       </span>Arch<span class="w">     </span>Version<span class="w">                 </span>Repo<span class="w">       </span><span class="nv">Size</span>
-<span class="w">        </span><span class="o">================================================================================</span>
-<span class="w">        </span>Upgrading:
-<span class="w">         </span>curl<span class="w">                          </span>x86_64<span class="w">   </span><span class="m">8</span>.0.1-7.fc38<span class="w">            </span>updates<span class="w">   </span><span class="m">348</span><span class="w"> </span>k
-<span class="w">         </span>dnf<span class="w">                           </span>noarch<span class="w">   </span><span class="m">4</span>.19.0-1.fc38<span class="w">           </span>updates<span class="w">   </span><span class="m">507</span><span class="w"> </span>k
-<span class="w">         </span>dnf-data<span class="w">                      </span>noarch<span class="w">   </span><span class="m">4</span>.19.0-1.fc38<span class="w">           </span>updates<span class="w">    </span><span class="m">39</span><span class="w"> </span>k
-<span class="w">         </span>elfutils-default-yama-scope<span class="w">   </span>noarch<span class="w">   </span><span class="m">0</span>.191-1.fc38<span class="w">            </span>updates<span class="w">    </span><span class="m">12</span><span class="w"> </span>k
-<span class="w">         </span>elfutils-libelf<span class="w">               </span>x86_64<span class="w">   </span><span class="m">0</span>.191-1.fc38<span class="w">            </span>updates<span class="w">   </span><span class="m">208</span><span class="w"> </span>k
-<span class="w">         </span>elfutils-libs<span class="w">                 </span>x86_64<span class="w">   </span><span class="m">0</span>.191-1.fc38<span class="w">            </span>updates<span class="w">   </span><span class="m">263</span><span class="w"> </span>k
-<span class="w">         </span>expat<span class="w">                         </span>x86_64<span class="w">   </span><span class="m">2</span>.6.0-1.fc38<span class="w">            </span>updates<span class="w">   </span><span class="m">112</span><span class="w"> </span>k
-<span class="w">         </span>keyutils-libs<span class="w">                 </span>x86_64<span class="w">   </span><span class="m">1</span>.6.3-1.fc38<span class="w">            </span>updates<span class="w">    </span><span class="m">31</span><span class="w"> </span>k
-<span class="w">         </span>libcurl<span class="w">                       </span>x86_64<span class="w">   </span><span class="m">8</span>.0.1-7.fc38<span class="w">            </span>updates<span class="w">   </span><span class="m">315</span><span class="w"> </span>k
-<span class="w">         </span>libdnf<span class="w">                        </span>x86_64<span class="w">   </span><span class="m">0</span>.73.0-1.fc38<span class="w">           </span>updates<span class="w">   </span><span class="m">681</span><span class="w"> </span>k
-<span class="w">         </span>libgcc<span class="w">                        </span>x86_64<span class="w">   </span><span class="m">13</span>.2.1-7.fc38<span class="w">           </span>updates<span class="w">   </span><span class="m">115</span><span class="w"> </span>k
-<span class="w">         </span>libgomp<span class="w">                       </span>x86_64<span class="w">   </span><span class="m">13</span>.2.1-7.fc38<span class="w">           </span>updates<span class="w">   </span><span class="m">324</span><span class="w"> </span>k
-<span class="w">         </span>libsolv<span class="w">                       </span>x86_64<span class="w">   </span><span class="m">0</span>.7.28-1.fc38<span class="w">           </span>updates<span class="w">   </span><span class="m">426</span><span class="w"> </span>k
-<span class="w">         </span>libstdc++<span class="w">                     </span>x86_64<span class="w">   </span><span class="m">13</span>.2.1-7.fc38<span class="w">           </span>updates<span class="w">   </span><span class="m">870</span><span class="w"> </span>k
-<span class="w">         </span>ncurses-base<span class="w">                  </span>noarch<span class="w">   </span><span class="m">6</span>.4-7.20230520.fc38.1<span class="w">   </span>updates<span class="w">    </span><span class="m">88</span><span class="w"> </span>k
-<span class="w">         </span>ncurses-libs<span class="w">                  </span>x86_64<span class="w">   </span><span class="m">6</span>.4-7.20230520.fc38.1<span class="w">   </span>updates<span class="w">   </span><span class="m">336</span><span class="w"> </span>k
-<span class="w">         </span>python3<span class="w">                       </span>x86_64<span class="w">   </span><span class="m">3</span>.11.8-2.fc38<span class="w">           </span>updates<span class="w">    </span><span class="m">28</span><span class="w"> </span>k
-<span class="w">         </span>python3-dnf<span class="w">                   </span>noarch<span class="w">   </span><span class="m">4</span>.19.0-1.fc38<span class="w">           </span>updates<span class="w">   </span><span class="m">606</span><span class="w"> </span>k
-<span class="w">         </span>python3-hawkey<span class="w">                </span>x86_64<span class="w">   </span><span class="m">0</span>.73.0-1.fc38<span class="w">           </span>updates<span class="w">   </span><span class="m">107</span><span class="w"> </span>k
-<span class="w">         </span>python3-libdnf<span class="w">                </span>x86_64<span class="w">   </span><span class="m">0</span>.73.0-1.fc38<span class="w">           </span>updates<span class="w">   </span><span class="m">859</span><span class="w"> </span>k
-<span class="w">         </span>python3-libs<span class="w">                  </span>x86_64<span class="w">   </span><span class="m">3</span>.11.8-2.fc38<span class="w">           </span>updates<span class="w">   </span><span class="m">9</span>.6<span class="w"> </span>M
-<span class="w">         </span>systemd-libs<span class="w">                  </span>x86_64<span class="w">   </span><span class="m">253</span>.17-1.fc38<span class="w">           </span>updates<span class="w">   </span><span class="m">649</span><span class="w"> </span>k
-<span class="w">         </span>vim-data<span class="w">                      </span>noarch<span class="w">   </span><span class="m">2</span>:9.1.158-1.fc38<span class="w">        </span>updates<span class="w">    </span><span class="m">23</span><span class="w"> </span>k
-<span class="w">         </span>vim-minimal<span class="w">                   </span>x86_64<span class="w">   </span><span class="m">2</span>:9.1.158-1.fc38<span class="w">        </span>updates<span class="w">   </span><span class="m">808</span><span class="w"> </span>k
-<span class="w">         </span>yum<span class="w">                           </span>noarch<span class="w">   </span><span class="m">4</span>.19.0-1.fc38<span class="w">           </span>updates<span class="w">    </span><span class="m">37</span><span class="w"> </span>k
-
-<span class="w">        </span>Transaction<span class="w"> </span><span class="nv">Summary</span>
-<span class="w">        </span><span class="o">================================================================================</span>
-<span class="w">        </span>Upgrade<span class="w">  </span><span class="m">25</span><span class="w"> </span>Packages
-
-<span class="w">        </span>Total<span class="w"> </span>download<span class="w"> </span>size:<span class="w"> </span><span class="m">17</span><span class="w"> </span>M
-<span class="w">        </span>Downloading<span class="w"> </span>Packages:
-<span class="w">        </span><span class="o">(</span><span class="m">1</span>/25<span class="o">)</span>:<span class="w"> </span>dnf-data-4.19.0-1.fc38.noarch.rpm<span class="w">       </span><span class="m">107</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">39</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">2</span>/25<span class="o">)</span>:<span class="w"> </span>elfutils-default-yama-scope-0.191-1.fc3<span class="w"> </span><span class="m">224</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">12</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">3</span>/25<span class="o">)</span>:<span class="w"> </span>curl-8.0.1-7.fc38.x86_64.rpm<span class="w">            </span><span class="m">637</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">348</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">4</span>/25<span class="o">)</span>:<span class="w"> </span>dnf-4.19.0-1.fc38.noarch.rpm<span class="w">            </span><span class="m">807</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">507</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">5</span>/25<span class="o">)</span>:<span class="w"> </span>elfutils-libelf-0.191-1.fc38.x86_64.rpm<span class="w"> </span><span class="m">901</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">208</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">6</span>/25<span class="o">)</span>:<span class="w"> </span>expat-2.6.0-1.fc38.x86_64.rpm<span class="w">           </span><span class="m">1</span>.1<span class="w"> </span>MB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">112</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">7</span>/25<span class="o">)</span>:<span class="w"> </span>keyutils-libs-1.6.3-1.fc38.x86_64.rpm<span class="w">   </span><span class="m">331</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">31</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">8</span>/25<span class="o">)</span>:<span class="w"> </span>elfutils-libs-0.191-1.fc38.x86_64.rpm<span class="w">   </span><span class="m">1</span>.1<span class="w"> </span>MB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">263</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">9</span>/25<span class="o">)</span>:<span class="w"> </span>libgcc-13.2.1-7.fc38.x86_64.rpm<span class="w">         </span><span class="m">872</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">115</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">10</span>/25<span class="o">)</span>:<span class="w"> </span>libcurl-8.0.1-7.fc38.x86_64.rpm<span class="w">        </span><span class="m">1</span>.7<span class="w"> </span>MB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">315</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">11</span>/25<span class="o">)</span>:<span class="w"> </span>libgomp-13.2.1-7.fc38.x86_64.rpm<span class="w">       </span><span class="m">1</span>.8<span class="w"> </span>MB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">324</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">12</span>/25<span class="o">)</span>:<span class="w"> </span>libdnf-0.73.0-1.fc38.x86_64.rpm<span class="w">        </span><span class="m">1</span>.8<span class="w"> </span>MB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">681</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">13</span>/25<span class="o">)</span>:<span class="w"> </span>libsolv-0.7.28-1.fc38.x86_64.rpm<span class="w">       </span><span class="m">2</span>.1<span class="w"> </span>MB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">426</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">14</span>/25<span class="o">)</span>:<span class="w"> </span>ncurses-base-6.4-7.20230520.fc38.1.noa<span class="w"> </span><span class="m">423</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">88</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">15</span>/25<span class="o">)</span>:<span class="w"> </span>ncurses-libs-6.4-7.20230520.fc38.1.x86<span class="w"> </span><span class="m">1</span>.3<span class="w"> </span>MB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">336</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">16</span>/25<span class="o">)</span>:<span class="w"> </span>python3-3.11.8-2.fc38.x86_64.rpm<span class="w">       </span><span class="m">286</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">28</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">17</span>/25<span class="o">)</span>:<span class="w"> </span>libstdc++-13.2.1-7.fc38.x86_64.rpm<span class="w">     </span><span class="m">1</span>.8<span class="w"> </span>MB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">870</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">18</span>/25<span class="o">)</span>:<span class="w"> </span>python3-hawkey-0.73.0-1.fc38.x86_64.rp<span class="w"> </span><span class="m">834</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">107</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">19</span>/25<span class="o">)</span>:<span class="w"> </span>python3-dnf-4.19.0-1.fc38.noarch.rpm<span class="w">   </span><span class="m">2</span>.5<span class="w"> </span>MB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">606</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">20</span>/25<span class="o">)</span>:<span class="w"> </span>python3-libdnf-0.73.0-1.fc38.x86_64.rp<span class="w"> </span><span class="m">1</span>.6<span class="w"> </span>MB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">859</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">21</span>/25<span class="o">)</span>:<span class="w"> </span>systemd-libs-253.17-1.fc38.x86_64.rpm<span class="w">  </span><span class="m">1</span>.4<span class="w"> </span>MB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">649</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">22</span>/25<span class="o">)</span>:<span class="w"> </span>vim-data-9.1.158-1.fc38.noarch.rpm<span class="w">     </span><span class="m">196</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">23</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">23</span>/25<span class="o">)</span>:<span class="w"> </span>yum-4.19.0-1.fc38.noarch.rpm<span class="w">           </span><span class="m">270</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">37</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">24</span>/25<span class="o">)</span>:<span class="w"> </span>vim-minimal-9.1.158-1.fc38.x86_64.rpm<span class="w">  </span><span class="m">2</span>.5<span class="w"> </span>MB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">808</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">25</span>/25<span class="o">)</span>:<span class="w"> </span>python3-libs-3.11.8-2.fc38.x86_64.rpm<span class="w">  </span><span class="m">3</span>.6<span class="w"> </span>MB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">9</span>.6<span class="w"> </span>MB<span class="w">     </span><span class="m">00</span>:02
-<span class="w">        </span>--------------------------------------------------------------------------------
-<span class="w">        </span>Total<span class="w">                                           </span><span class="m">3</span>.6<span class="w"> </span>MB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">17</span><span class="w"> </span>MB<span class="w">     </span><span class="m">00</span>:04
-<span class="w">        </span>Running<span class="w"> </span>transaction<span class="w"> </span>check
-<span class="w">        </span>Transaction<span class="w"> </span>check<span class="w"> </span>succeeded.
-<span class="w">        </span>Running<span class="w"> </span>transaction<span class="w"> </span><span class="nb">test</span>
-<span class="w">        </span>Transaction<span class="w"> </span><span class="nb">test</span><span class="w"> </span>succeeded.
-<span class="w">        </span>Running<span class="w"> </span>transaction
-<span class="w">          </span>Preparing<span class="w">        </span>:<span class="w">                                                        </span><span class="m">1</span>/1
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>libgcc-13.2.1-7.fc38.x86_64<span class="w">                           </span><span class="m">1</span>/50
-<span class="w">          </span>Running<span class="w"> </span>scriptlet:<span class="w"> </span>libgcc-13.2.1-7.fc38.x86_64<span class="w">                           </span><span class="m">1</span>/50
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>libstdc++-13.2.1-7.fc38.x86_64<span class="w">                        </span><span class="m">2</span>/50
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>libsolv-0.7.28-1.fc38.x86_64<span class="w">                          </span><span class="m">3</span>/50
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>libdnf-0.73.0-1.fc38.x86_64<span class="w">                           </span><span class="m">4</span>/50
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>vim-data-2:9.1.158-1.fc38.noarch<span class="w">                      </span><span class="m">5</span>/50
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>ncurses-base-6.4-7.20230520.fc38.1.noarch<span class="w">             </span><span class="m">6</span>/50
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>ncurses-libs-6.4-7.20230520.fc38.1.x86_64<span class="w">             </span><span class="m">7</span>/50
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>libcurl-8.0.1-7.fc38.x86_64<span class="w">                           </span><span class="m">8</span>/50
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>expat-2.6.0-1.fc38.x86_64<span class="w">                             </span><span class="m">9</span>/50
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>python3-3.11.8-2.fc38.x86_64<span class="w">                         </span><span class="m">10</span>/50
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>python3-libs-3.11.8-2.fc38.x86_64<span class="w">                    </span><span class="m">11</span>/50
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>python3-libdnf-0.73.0-1.fc38.x86_64<span class="w">                  </span><span class="m">12</span>/50
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>python3-hawkey-0.73.0-1.fc38.x86_64<span class="w">                  </span><span class="m">13</span>/50
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>elfutils-libelf-0.191-1.fc38.x86_64<span class="w">                  </span><span class="m">14</span>/50
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>elfutils-default-yama-scope-0.191-1.fc38.noarch<span class="w">      </span><span class="m">15</span>/50
-<span class="w">          </span>Running<span class="w"> </span>scriptlet:<span class="w"> </span>elfutils-default-yama-scope-0.191-1.fc38.noarch<span class="w">      </span><span class="m">15</span>/50
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>dnf-data-4.19.0-1.fc38.noarch<span class="w">                        </span><span class="m">16</span>/50
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>python3-dnf-4.19.0-1.fc38.noarch<span class="w">                     </span><span class="m">17</span>/50
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>dnf-4.19.0-1.fc38.noarch<span class="w">                             </span><span class="m">18</span>/50
-<span class="w">          </span>Running<span class="w"> </span>scriptlet:<span class="w"> </span>dnf-4.19.0-1.fc38.noarch<span class="w">                             </span><span class="m">18</span>/50
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>yum-4.19.0-1.fc38.noarch<span class="w">                             </span><span class="m">19</span>/50
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>elfutils-libs-0.191-1.fc38.x86_64<span class="w">                    </span><span class="m">20</span>/50
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>curl-8.0.1-7.fc38.x86_64<span class="w">                             </span><span class="m">21</span>/50
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>vim-minimal-2:9.1.158-1.fc38.x86_64<span class="w">                  </span><span class="m">22</span>/50
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>systemd-libs-253.17-1.fc38.x86_64<span class="w">                    </span><span class="m">23</span>/50
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>libgomp-13.2.1-7.fc38.x86_64<span class="w">                         </span><span class="m">24</span>/50
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>keyutils-libs-1.6.3-1.fc38.x86_64<span class="w">                    </span><span class="m">25</span>/50
-<span class="w">          </span>Cleanup<span class="w">          </span>:<span class="w"> </span>elfutils-libs-0.190-2.fc38.x86_64<span class="w">                    </span><span class="m">26</span>/50
-<span class="w">          </span>Cleanup<span class="w">          </span>:<span class="w"> </span>systemd-libs-253.15-2.fc38.x86_64<span class="w">                    </span><span class="m">27</span>/50
-<span class="w">          </span>Cleanup<span class="w">          </span>:<span class="w"> </span>vim-minimal-2:9.1.113-1.fc38.x86_64<span class="w">                  </span><span class="m">28</span>/50
-<span class="w">          </span>Cleanup<span class="w">          </span>:<span class="w"> </span>curl-8.0.1-6.fc38.x86_64<span class="w">                             </span><span class="m">29</span>/50
-<span class="w">          </span>Cleanup<span class="w">          </span>:<span class="w"> </span>yum-4.18.2-1.fc38.noarch<span class="w">                             </span><span class="m">30</span>/50
-<span class="w">          </span>Running<span class="w"> </span>scriptlet:<span class="w"> </span>dnf-4.18.2-1.fc38.noarch<span class="w">                             </span><span class="m">31</span>/50
-<span class="w">          </span>Cleanup<span class="w">          </span>:<span class="w"> </span>dnf-4.18.2-1.fc38.noarch<span class="w">                             </span><span class="m">31</span>/50
-<span class="w">          </span>Running<span class="w"> </span>scriptlet:<span class="w"> </span>dnf-4.18.2-1.fc38.noarch<span class="w">                             </span><span class="m">31</span>/50
-<span class="w">          </span>Cleanup<span class="w">          </span>:<span class="w"> </span>python3-dnf-4.18.2-1.fc38.noarch<span class="w">                     </span><span class="m">32</span>/50
-<span class="w">          </span>Cleanup<span class="w">          </span>:<span class="w"> </span>dnf-data-4.18.2-1.fc38.noarch<span class="w">                        </span><span class="m">33</span>/50
-<span class="w">          </span>Cleanup<span class="w">          </span>:<span class="w"> </span>vim-data-2:9.1.113-1.fc38.noarch<span class="w">                     </span><span class="m">34</span>/50
-<span class="w">          </span>Cleanup<span class="w">          </span>:<span class="w"> </span>elfutils-default-yama-scope-0.190-2.fc38.noarch<span class="w">      </span><span class="m">35</span>/50
-<span class="w">          </span>Cleanup<span class="w">          </span>:<span class="w"> </span>python3-hawkey-0.72.0-1.fc38.x86_64<span class="w">                  </span><span class="m">36</span>/50
-<span class="w">          </span>Cleanup<span class="w">          </span>:<span class="w"> </span>python3-libdnf-0.72.0-1.fc38.x86_64<span class="w">                  </span><span class="m">37</span>/50
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-<span class="w">          </span>Cleanup<span class="w">          </span>:<span class="w"> </span>python3-libs-3.11.7-2.fc38.x86_64<span class="w">                    </span><span class="m">40</span>/50
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-<span class="w">          </span>Cleanup<span class="w">          </span>:<span class="w"> </span>ncurses-libs-6.4-7.20230520.fc38.x86_64<span class="w">              </span><span class="m">42</span>/50
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-<span class="w">          </span>Cleanup<span class="w">          </span>:<span class="w"> </span>expat-2.5.0-2.fc38.x86_64<span class="w">                            </span><span class="m">44</span>/50
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-<span class="w">          </span>Cleanup<span class="w">          </span>:<span class="w"> </span>libsolv-0.7.27-1.fc38.x86_64<span class="w">                         </span><span class="m">46</span>/50
-<span class="w">          </span>Cleanup<span class="w">          </span>:<span class="w"> </span>libcurl-8.0.1-6.fc38.x86_64<span class="w">                          </span><span class="m">47</span>/50
-<span class="w">          </span>Cleanup<span class="w">          </span>:<span class="w"> </span>elfutils-libelf-0.190-2.fc38.x86_64<span class="w">                  </span><span class="m">48</span>/50
-<span class="w">          </span>Cleanup<span class="w">          </span>:<span class="w"> </span>libgomp-13.2.1-4.fc38.x86_64<span class="w">                         </span><span class="m">49</span>/50
-<span class="w">          </span>Cleanup<span class="w">          </span>:<span class="w"> </span>keyutils-libs-1.6.1-6.fc38.x86_64<span class="w">                    </span><span class="m">50</span>/50
-<span class="w">          </span>Running<span class="w"> </span>scriptlet:<span class="w"> </span>keyutils-libs-1.6.1-6.fc38.x86_64<span class="w">                    </span><span class="m">50</span>/50
-<span class="w">          </span>Verifying<span class="w">        </span>:<span class="w"> </span>curl-8.0.1-7.fc38.x86_64<span class="w">                              </span><span class="m">1</span>/50
-<span class="w">          </span>Verifying<span class="w">        </span>:<span class="w"> </span>curl-8.0.1-6.fc38.x86_64<span class="w">                              </span><span class="m">2</span>/50
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-<span class="w">          </span>Verifying<span class="w">        </span>:<span class="w"> </span>expat-2.6.0-1.fc38.x86_64<span class="w">                            </span><span class="m">13</span>/50
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-<span class="w">          </span>Verifying<span class="w">        </span>:<span class="w"> </span>libsolv-0.7.28-1.fc38.x86_64<span class="w">                         </span><span class="m">25</span>/50
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-<span class="w">          </span>Verifying<span class="w">        </span>:<span class="w"> </span>libstdc++-13.2.1-4.fc38.x86_64<span class="w">                       </span><span class="m">28</span>/50
-<span class="w">          </span>Verifying<span class="w">        </span>:<span class="w"> </span>ncurses-base-6.4-7.20230520.fc38.1.noarch<span class="w">            </span><span class="m">29</span>/50
-<span class="w">          </span>Verifying<span class="w">        </span>:<span class="w"> </span>ncurses-base-6.4-7.20230520.fc38.noarch<span class="w">              </span><span class="m">30</span>/50
-<span class="w">          </span>Verifying<span class="w">        </span>:<span class="w"> </span>ncurses-libs-6.4-7.20230520.fc38.1.x86_64<span class="w">            </span><span class="m">31</span>/50
-<span class="w">          </span>Verifying<span class="w">        </span>:<span class="w"> </span>ncurses-libs-6.4-7.20230520.fc38.x86_64<span class="w">              </span><span class="m">32</span>/50
-<span class="w">          </span>Verifying<span class="w">        </span>:<span class="w"> </span>python3-3.11.8-2.fc38.x86_64<span class="w">                         </span><span class="m">33</span>/50
-<span class="w">          </span>Verifying<span class="w">        </span>:<span class="w"> </span>python3-3.11.7-2.fc38.x86_64<span class="w">                         </span><span class="m">34</span>/50
-<span class="w">          </span>Verifying<span class="w">        </span>:<span class="w"> </span>python3-dnf-4.19.0-1.fc38.noarch<span class="w">                     </span><span class="m">35</span>/50
-<span class="w">          </span>Verifying<span class="w">        </span>:<span class="w"> </span>python3-dnf-4.18.2-1.fc38.noarch<span class="w">                     </span><span class="m">36</span>/50
-<span class="w">          </span>Verifying<span class="w">        </span>:<span class="w"> </span>python3-hawkey-0.73.0-1.fc38.x86_64<span class="w">                  </span><span class="m">37</span>/50
-<span class="w">          </span>Verifying<span class="w">        </span>:<span class="w"> </span>python3-hawkey-0.72.0-1.fc38.x86_64<span class="w">                  </span><span class="m">38</span>/50
-<span class="w">          </span>Verifying<span class="w">        </span>:<span class="w"> </span>python3-libdnf-0.73.0-1.fc38.x86_64<span class="w">                  </span><span class="m">39</span>/50
-<span class="w">          </span>Verifying<span class="w">        </span>:<span class="w"> </span>python3-libdnf-0.72.0-1.fc38.x86_64<span class="w">                  </span><span class="m">40</span>/50
-<span class="w">          </span>Verifying<span class="w">        </span>:<span class="w"> </span>python3-libs-3.11.8-2.fc38.x86_64<span class="w">                    </span><span class="m">41</span>/50
-<span class="w">          </span>Verifying<span class="w">        </span>:<span class="w"> </span>python3-libs-3.11.7-2.fc38.x86_64<span class="w">                    </span><span class="m">42</span>/50
-<span class="w">          </span>Verifying<span class="w">        </span>:<span class="w"> </span>systemd-libs-253.17-1.fc38.x86_64<span class="w">                    </span><span class="m">43</span>/50
-<span class="w">          </span>Verifying<span class="w">        </span>:<span class="w"> </span>systemd-libs-253.15-2.fc38.x86_64<span class="w">                    </span><span class="m">44</span>/50
-<span class="w">          </span>Verifying<span class="w">        </span>:<span class="w"> </span>vim-data-2:9.1.158-1.fc38.noarch<span class="w">                     </span><span class="m">45</span>/50
-<span class="w">          </span>Verifying<span class="w">        </span>:<span class="w"> </span>vim-data-2:9.1.113-1.fc38.noarch<span class="w">                     </span><span class="m">46</span>/50
-<span class="w">          </span>Verifying<span class="w">        </span>:<span class="w"> </span>vim-minimal-2:9.1.158-1.fc38.x86_64<span class="w">                  </span><span class="m">47</span>/50
-<span class="w">          </span>Verifying<span class="w">        </span>:<span class="w"> </span>vim-minimal-2:9.1.113-1.fc38.x86_64<span class="w">                  </span><span class="m">48</span>/50
-<span class="w">          </span>Verifying<span class="w">        </span>:<span class="w"> </span>yum-4.19.0-1.fc38.noarch<span class="w">                             </span><span class="m">49</span>/50
-<span class="w">          </span>Verifying<span class="w">        </span>:<span class="w"> </span>yum-4.18.2-1.fc38.noarch<span class="w">                             </span><span class="m">50</span>/50
-
-<span class="w">        </span>Upgraded:
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-<span class="w">          </span>dnf-4.19.0-1.fc38.noarch
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-<span class="w">          </span>libgcc-13.2.1-7.fc38.x86_64
-<span class="w">          </span>libgomp-13.2.1-7.fc38.x86_64
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-<span class="w">          </span>yum-4.19.0-1.fc38.noarch
-
-<span class="w">        </span>Complete!
-<span class="w">        </span>--&gt;<span class="w"> </span>787eba03a2e
-<span class="w">        </span>STEP<span class="w"> </span><span class="m">3</span>/3:<span class="w"> </span>LABEL<span class="w"> </span>velocity.config.system<span class="o">=</span><span class="s2">&quot;x86_64&quot;</span><span class="w">     </span>velocity.config.backend<span class="o">=</span><span class="s2">&quot;podman&quot;</span><span class="w">     </span>velocity.config.distro<span class="o">=</span><span class="s2">&quot;fedora&quot;</span><span class="w">     </span>velocity.image.fedora__38<span class="o">=</span><span class="s2">&quot;ff9fa85cf102560cf3fe2014c3c758fbb3809247537abbeab2c4b67c62dda164&quot;</span>
-<span class="w">        </span>COMMIT<span class="w"> </span>localhost/fedora__38__x86_64__fedora:latest
-<span class="w">        </span>--&gt;<span class="w"> </span>17c3457c281
-<span class="w">        </span>Successfully<span class="w"> </span>tagged<span class="w"> </span>localhost/fedora__38__x86_64__fedora:latest
-<span class="w">        </span><span class="nv">17c3457c281309909691b183b77323eb56390792a787e4a319b494d40868c907</span>
-<span class="o">==</span>&gt;<span class="w"> </span>xuoykrdt:<span class="w"> </span>IMAGE<span class="w"> </span>localhost/fedora__38__x86_64__fedora:latest<span class="w"> </span><span class="o">(</span>fedora@<span class="o">=</span><span class="m">38</span><span class="o">)</span><span class="w"> </span>BUILT<span class="w"> </span><span class="o">[</span><span class="m">0</span>:13:27<span class="o">]</span>
+<span class="w">    </span>fedora@38-aa51aa7
+
+<span class="o">==</span>&gt;<span class="w"> </span>aa51aa7:<span class="w"> </span>BUILD<span class="w"> </span>fedora@38<span class="w"> </span>...
+<span class="o">==</span>&gt;<span class="w"> </span>aa51aa7:<span class="w"> </span>GENERATING<span class="w"> </span>SCRIPT<span class="w"> </span>...
+<span class="w">    </span>SCRIPT:<span class="w"> </span>/tmp/velocity/build/fedora-38-aa51aa7/script
+<span class="w">    </span>Bootstrap:<span class="w"> </span>docker
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+
+<span class="w">    </span>%post
+<span class="w">    </span>dnf<span class="w"> </span>-y<span class="w"> </span>upgrade
+<span class="w">    </span>dnf<span class="w"> </span>clean<span class="w"> </span><span class="nv">all</span>
+<span class="o">==</span>&gt;<span class="w"> </span>aa51aa7:<span class="w"> </span>BUILDING<span class="w"> </span>...
+<span class="w">    </span><span class="c1">#!/usr/bin/env bash</span>
+<span class="w">    </span>apptainer<span class="w"> </span>build<span class="w"> </span>--disable-cache<span class="w"> </span>/tmp/velocity/build/fedora-38-aa51aa7/aa51aa7.sif<span class="w"> </span>/tmp/velocity/build/fedora-38-aa51aa7/script<span class="p">;</span>
+<span class="w">    </span>Fedora<span class="w"> </span><span class="m">38</span><span class="w"> </span>-<span class="w"> </span>x86_64<span class="w">                              </span><span class="m">2</span>.3<span class="w"> </span>MB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">83</span><span class="w"> </span>MB<span class="w">     </span><span class="m">00</span>:35
+<span class="w">    </span>Fedora<span class="w"> </span><span class="m">38</span><span class="w"> </span>openh264<span class="w"> </span><span class="o">(</span>From<span class="w"> </span>Cisco<span class="o">)</span><span class="w"> </span>-<span class="w"> </span>x86_64<span class="w">        </span><span class="m">2</span>.8<span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">2</span>.6<span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
+<span class="w">    </span>Fedora<span class="w"> </span>Modular<span class="w"> </span><span class="m">38</span><span class="w"> </span>-<span class="w"> </span>x86_64<span class="w">                      </span><span class="m">1</span>.8<span class="w"> </span>MB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">2</span>.8<span class="w"> </span>MB<span class="w">     </span><span class="m">00</span>:01
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+<span class="w">    </span>Fedora<span class="w"> </span>Modular<span class="w"> </span><span class="m">38</span><span class="w"> </span>-<span class="w"> </span>x86_64<span class="w"> </span>-<span class="w"> </span>Updates<span class="w">            </span><span class="m">257</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">2</span>.2<span class="w"> </span>MB<span class="w">     </span><span class="m">00</span>:08
+<span class="w">    </span>Dependencies<span class="w"> </span>resolved.
+<span class="w">    </span><span class="o">================================================================================</span>
+<span class="w">     </span>Package<span class="w">                            </span>Arch<span class="w">    </span>Version<span class="w">              </span>Repo<span class="w">      </span><span class="nv">Size</span>
+<span class="w">    </span><span class="o">================================================================================</span>
+<span class="w">    </span>Upgrading:
+<span class="w">     </span>fedora-release-common<span class="w">              </span>noarch<span class="w">  </span><span class="m">38</span>-37<span class="w">                </span>updates<span class="w">   </span><span class="m">20</span><span class="w"> </span>k
+<span class="w">     </span>fedora-release-container<span class="w">           </span>noarch<span class="w">  </span><span class="m">38</span>-37<span class="w">                </span>updates<span class="w">   </span><span class="m">10</span><span class="w"> </span>k
+<span class="w">     </span>fedora-release-identity-container<span class="w">  </span>noarch<span class="w">  </span><span class="m">38</span>-37<span class="w">                </span>updates<span class="w">   </span><span class="m">12</span><span class="w"> </span>k
+<span class="w">     </span>glibc<span class="w">                              </span>x86_64<span class="w">  </span><span class="m">2</span>.37-19.fc38<span class="w">         </span>updates<span class="w">  </span><span class="m">2</span>.1<span class="w"> </span>M
+<span class="w">     </span>glibc-common<span class="w">                       </span>x86_64<span class="w">  </span><span class="m">2</span>.37-19.fc38<span class="w">         </span>updates<span class="w">  </span><span class="m">320</span><span class="w"> </span>k
+<span class="w">     </span>glibc-minimal-langpack<span class="w">             </span>x86_64<span class="w">  </span><span class="m">2</span>.37-19.fc38<span class="w">         </span>updates<span class="w">   </span><span class="m">42</span><span class="w"> </span>k
+<span class="w">     </span>gnutls<span class="w">                             </span>x86_64<span class="w">  </span><span class="m">3</span>.8.5-1.fc38<span class="w">         </span>updates<span class="w">  </span><span class="m">1</span>.1<span class="w"> </span>M
+<span class="w">     </span>libnghttp2<span class="w">                         </span>x86_64<span class="w">  </span><span class="m">1</span>.52.0-3.fc38<span class="w">        </span>updates<span class="w">   </span><span class="m">75</span><span class="w"> </span>k
+<span class="w">     </span>python-pip-wheel<span class="w">                   </span>noarch<span class="w">  </span><span class="m">22</span>.3.1-4.fc38<span class="w">        </span>updates<span class="w">  </span><span class="m">1</span>.4<span class="w"> </span>M
+<span class="w">     </span>python3<span class="w">                            </span>x86_64<span class="w">  </span><span class="m">3</span>.11.9-2.fc38<span class="w">        </span>updates<span class="w">   </span><span class="m">28</span><span class="w"> </span>k
+<span class="w">     </span>python3-libs<span class="w">                       </span>x86_64<span class="w">  </span><span class="m">3</span>.11.9-2.fc38<span class="w">        </span>updates<span class="w">  </span><span class="m">9</span>.6<span class="w"> </span>M
+<span class="w">     </span>tpm2-tss<span class="w">                           </span>x86_64<span class="w">  </span><span class="m">4</span>.0.2-1.fc38<span class="w">         </span>updates<span class="w">  </span><span class="m">391</span><span class="w"> </span>k
+<span class="w">     </span>vim-data<span class="w">                           </span>noarch<span class="w">  </span><span class="m">2</span>:9.1.393-1.fc38<span class="w">     </span>updates<span class="w">   </span><span class="m">23</span><span class="w"> </span>k
+<span class="w">     </span>vim-minimal<span class="w">                        </span>x86_64<span class="w">  </span><span class="m">2</span>:9.1.393-1.fc38<span class="w">     </span>updates<span class="w">  </span><span class="m">810</span><span class="w"> </span>k
+<span class="w">    </span>Installing<span class="w"> </span>weak<span class="w"> </span>dependencies:
+<span class="w">     </span>libxcrypt-compat<span class="w">                   </span>x86_64<span class="w">  </span><span class="m">4</span>.4.36-1.fc38<span class="w">        </span>updates<span class="w">   </span><span class="m">90</span><span class="w"> </span>k
+
+<span class="w">    </span>Transaction<span class="w"> </span><span class="nv">Summary</span>
+<span class="w">    </span><span class="o">================================================================================</span>
+<span class="w">    </span>Install<span class="w">   </span><span class="m">1</span><span class="w"> </span>Package
+<span class="w">    </span>Upgrade<span class="w">  </span><span class="m">14</span><span class="w"> </span>Packages
+
+<span class="w">    </span>Total<span class="w"> </span>download<span class="w"> </span>size:<span class="w"> </span><span class="m">16</span><span class="w"> </span>M
+<span class="w">    </span>Downloading<span class="w"> </span>Packages:
+<span class="w">    </span><span class="o">(</span><span class="m">1</span>/15<span class="o">)</span>:<span class="w"> </span>fedora-release-container-38-37.noarch.r<span class="w"> </span><span class="m">160</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">10</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
+<span class="w">    </span><span class="o">(</span><span class="m">2</span>/15<span class="o">)</span>:<span class="w"> </span>fedora-release-common-38-37.noarch.rpm<span class="w">  </span><span class="m">228</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">20</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
+<span class="w">    </span><span class="o">(</span><span class="m">3</span>/15<span class="o">)</span>:<span class="w"> </span>fedora-release-identity-container-38-37<span class="w"> </span><span class="m">385</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">12</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
+<span class="w">    </span><span class="o">(</span><span class="m">4</span>/15<span class="o">)</span>:<span class="w"> </span>libxcrypt-compat-4.4.36-1.fc38.x86_64.r<span class="w"> </span><span class="m">648</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">90</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
+<span class="w">    </span><span class="o">(</span><span class="m">5</span>/15<span class="o">)</span>:<span class="w"> </span>glibc-minimal-langpack-2.37-19.fc38.x86<span class="w"> </span><span class="m">1</span>.1<span class="w"> </span>MB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">42</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
+<span class="w">    </span><span class="o">(</span><span class="m">6</span>/15<span class="o">)</span>:<span class="w"> </span>glibc-common-2.37-19.fc38.x86_64.rpm<span class="w">    </span><span class="m">2</span>.4<span class="w"> </span>MB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">320</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
+<span class="w">    </span><span class="o">(</span><span class="m">7</span>/15<span class="o">)</span>:<span class="w"> </span>libnghttp2-1.52.0-3.fc38.x86_64.rpm<span class="w">     </span><span class="m">1</span>.7<span class="w"> </span>MB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">75</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
+<span class="w">    </span><span class="o">(</span><span class="m">8</span>/15<span class="o">)</span>:<span class="w"> </span>glibc-2.37-19.fc38.x86_64.rpm<span class="w">           </span><span class="m">8</span>.1<span class="w"> </span>MB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">2</span>.1<span class="w"> </span>MB<span class="w">     </span><span class="m">00</span>:00
+<span class="w">    </span><span class="o">(</span><span class="m">9</span>/15<span class="o">)</span>:<span class="w"> </span>python3-3.11.9-2.fc38.x86_64.rpm<span class="w">        </span><span class="m">686</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">28</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
+<span class="w">    </span><span class="o">(</span><span class="m">10</span>/15<span class="o">)</span>:<span class="w"> </span>python-pip-wheel-22.3.1-4.fc38.noarch.<span class="w"> </span><span class="m">8</span>.8<span class="w"> </span>MB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">1</span>.4<span class="w"> </span>MB<span class="w">     </span><span class="m">00</span>:00
+<span class="w">    </span><span class="o">(</span><span class="m">11</span>/15<span class="o">)</span>:<span class="w"> </span>tpm2-tss-4.0.2-1.fc38.x86_64.rpm<span class="w">       </span><span class="m">6</span>.1<span class="w"> </span>MB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">391</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
+<span class="w">    </span><span class="o">(</span><span class="m">12</span>/15<span class="o">)</span>:<span class="w"> </span>gnutls-3.8.5-1.fc38.x86_64.rpm<span class="w">         </span><span class="m">3</span>.1<span class="w"> </span>MB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">1</span>.1<span class="w"> </span>MB<span class="w">     </span><span class="m">00</span>:00
+<span class="w">    </span><span class="o">(</span><span class="m">13</span>/15<span class="o">)</span>:<span class="w"> </span>vim-data-9.1.393-1.fc38.noarch.rpm<span class="w">     </span><span class="m">503</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">23</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
+<span class="w">    </span><span class="o">(</span><span class="m">14</span>/15<span class="o">)</span>:<span class="w"> </span>vim-minimal-9.1.393-1.fc38.x86_64.rpm<span class="w">  </span><span class="m">4</span>.3<span class="w"> </span>MB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">810</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
+<span class="w">    </span><span class="o">(</span><span class="m">15</span>/15<span class="o">)</span>:<span class="w"> </span>python3-libs-3.11.9-2.fc38.x86_64.rpm<span class="w">   </span><span class="m">11</span><span class="w"> </span>MB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">9</span>.6<span class="w"> </span>MB<span class="w">     </span><span class="m">00</span>:00
+<span class="w">    </span>--------------------------------------------------------------------------------
+<span class="w">    </span>Total<span class="w">                                            </span><span class="m">11</span><span class="w"> </span>MB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">16</span><span class="w"> </span>MB<span class="w">     </span><span class="m">00</span>:01
+<span class="w">    </span>Running<span class="w"> </span>transaction<span class="w"> </span>check
+<span class="w">    </span>Transaction<span class="w"> </span>check<span class="w"> </span>succeeded.
+<span class="w">    </span>Running<span class="w"> </span>transaction<span class="w"> </span><span class="nb">test</span>
+<span class="w">    </span>Transaction<span class="w"> </span><span class="nb">test</span><span class="w"> </span>succeeded.
+<span class="w">    </span>Running<span class="w"> </span>transaction
+<span class="w">      </span>Preparing<span class="w">        </span>:<span class="w">                                                        </span><span class="m">1</span>/1
+<span class="w">      </span>Upgrading<span class="w">        </span>:<span class="w"> </span>glibc-common-2.37-19.fc38.x86_64<span class="w">                      </span><span class="m">1</span>/29
+<span class="w">      </span>Upgrading<span class="w">        </span>:<span class="w"> </span>glibc-minimal-langpack-2.37-19.fc38.x86_64<span class="w">            </span><span class="m">2</span>/29
+<span class="w">      </span>Running<span class="w"> </span>scriptlet:<span class="w"> </span>glibc-2.37-19.fc38.x86_64<span class="w">                             </span><span class="m">3</span>/29
+<span class="w">      </span>Upgrading<span class="w">        </span>:<span class="w"> </span>glibc-2.37-19.fc38.x86_64<span class="w">                             </span><span class="m">3</span>/29
+<span class="w">      </span>Running<span class="w"> </span>scriptlet:<span class="w"> </span>glibc-2.37-19.fc38.x86_64<span class="w">                             </span><span class="m">3</span>/29
+<span class="w">      </span>Upgrading<span class="w">        </span>:<span class="w"> </span>fedora-release-identity-container-38-37.noarch<span class="w">        </span><span class="m">4</span>/29
+<span class="w">      </span>Upgrading<span class="w">        </span>:<span class="w"> </span>fedora-release-container-38-37.noarch<span class="w">                 </span><span class="m">5</span>/29
+<span class="w">      </span>Upgrading<span class="w">        </span>:<span class="w"> </span>fedora-release-common-38-37.noarch<span class="w">                    </span><span class="m">6</span>/29
+<span class="w">      </span>Installing<span class="w">       </span>:<span class="w"> </span>libxcrypt-compat-4.4.36-1.fc38.x86_64<span class="w">                 </span><span class="m">7</span>/29
+<span class="w">      </span>Upgrading<span class="w">        </span>:<span class="w"> </span>python-pip-wheel-22.3.1-4.fc38.noarch<span class="w">                 </span><span class="m">8</span>/29
+<span class="w">      </span>Upgrading<span class="w">        </span>:<span class="w"> </span>python3-3.11.9-2.fc38.x86_64<span class="w">                          </span><span class="m">9</span>/29
+<span class="w">      </span>Upgrading<span class="w">        </span>:<span class="w"> </span>python3-libs-3.11.9-2.fc38.x86_64<span class="w">                    </span><span class="m">10</span>/29
+<span class="w">      </span>Upgrading<span class="w">        </span>:<span class="w"> </span>vim-data-2:9.1.393-1.fc38.noarch<span class="w">                     </span><span class="m">11</span>/29
+<span class="w">      </span>Upgrading<span class="w">        </span>:<span class="w"> </span>vim-minimal-2:9.1.393-1.fc38.x86_64<span class="w">                  </span><span class="m">12</span>/29
+<span class="w">      </span>Upgrading<span class="w">        </span>:<span class="w"> </span>gnutls-3.8.5-1.fc38.x86_64<span class="w">                           </span><span class="m">13</span>/29
+<span class="w">      </span>Upgrading<span class="w">        </span>:<span class="w"> </span>libnghttp2-1.52.0-3.fc38.x86_64<span class="w">                      </span><span class="m">14</span>/29
+<span class="w">      </span>Running<span class="w"> </span>scriptlet:<span class="w"> </span>tpm2-tss-4.0.2-1.fc38.x86_64<span class="w">                         </span><span class="m">15</span>/29
+<span class="w">      </span>Upgrading<span class="w">        </span>:<span class="w"> </span>tpm2-tss-4.0.2-1.fc38.x86_64<span class="w">                         </span><span class="m">15</span>/29
+<span class="w">      </span>Cleanup<span class="w">          </span>:<span class="w"> </span>fedora-release-common-38-36.noarch<span class="w">                   </span><span class="m">16</span>/29
+<span class="w">      </span>Cleanup<span class="w">          </span>:<span class="w"> </span>gnutls-3.8.4-1.fc38.x86_64<span class="w">                           </span><span class="m">17</span>/29
+<span class="w">      </span>Cleanup<span class="w">          </span>:<span class="w"> </span>tpm2-tss-4.0.1-3.fc38.x86_64<span class="w">                         </span><span class="m">18</span>/29
+<span class="w">      </span>Cleanup<span class="w">          </span>:<span class="w"> </span>vim-minimal-2:9.1.309-1.fc38.x86_64<span class="w">                  </span><span class="m">19</span>/29
+<span class="w">      </span>Cleanup<span class="w">          </span>:<span class="w"> </span>libnghttp2-1.52.0-2.fc38.x86_64<span class="w">                      </span><span class="m">20</span>/29
+<span class="w">      </span>Cleanup<span class="w">          </span>:<span class="w"> </span>python3-3.11.8-2.fc38.x86_64<span class="w">                         </span><span class="m">21</span>/29
+<span class="w">      </span>Cleanup<span class="w">          </span>:<span class="w"> </span>fedora-release-container-38-36.noarch<span class="w">                </span><span class="m">22</span>/29
+<span class="w">      </span>Cleanup<span class="w">          </span>:<span class="w"> </span>fedora-release-identity-container-38-36.noarch<span class="w">       </span><span class="m">23</span>/29
+<span class="w">      </span>Cleanup<span class="w">          </span>:<span class="w"> </span>vim-data-2:9.1.309-1.fc38.noarch<span class="w">                     </span><span class="m">24</span>/29
+<span class="w">      </span>Cleanup<span class="w">          </span>:<span class="w"> </span>python3-libs-3.11.8-2.fc38.x86_64<span class="w">                    </span><span class="m">25</span>/29
+<span class="w">      </span>Cleanup<span class="w">          </span>:<span class="w"> </span>python-pip-wheel-22.3.1-3.fc38.noarch<span class="w">                </span><span class="m">26</span>/29
+<span class="w">      </span>Cleanup<span class="w">          </span>:<span class="w"> </span>glibc-2.37-18.fc38.x86_64<span class="w">                            </span><span class="m">27</span>/29
+<span class="w">      </span>Cleanup<span class="w">          </span>:<span class="w"> </span>glibc-minimal-langpack-2.37-18.fc38.x86_64<span class="w">           </span><span class="m">28</span>/29
+<span class="w">      </span>Cleanup<span class="w">          </span>:<span class="w"> </span>glibc-common-2.37-18.fc38.x86_64<span class="w">                     </span><span class="m">29</span>/29
+<span class="w">      </span>Running<span class="w"> </span>scriptlet:<span class="w"> </span>glibc-common-2.37-18.fc38.x86_64<span class="w">                     </span><span class="m">29</span>/29
+<span class="w">      </span>Verifying<span class="w">        </span>:<span class="w"> </span>libxcrypt-compat-4.4.36-1.fc38.x86_64<span class="w">                 </span><span class="m">1</span>/29
+<span class="w">      </span>Verifying<span class="w">        </span>:<span class="w"> </span>fedora-release-common-38-37.noarch<span class="w">                    </span><span class="m">2</span>/29
+<span class="w">      </span>Verifying<span class="w">        </span>:<span class="w"> </span>fedora-release-common-38-36.noarch<span class="w">                    </span><span class="m">3</span>/29
+<span class="w">      </span>Verifying<span class="w">        </span>:<span class="w"> </span>fedora-release-container-38-37.noarch<span class="w">                 </span><span class="m">4</span>/29
+<span class="w">      </span>Verifying<span class="w">        </span>:<span class="w"> </span>fedora-release-container-38-36.noarch<span class="w">                 </span><span class="m">5</span>/29
+<span class="w">      </span>Verifying<span class="w">        </span>:<span class="w"> </span>fedora-release-identity-container-38-37.noarch<span class="w">        </span><span class="m">6</span>/29
+<span class="w">      </span>Verifying<span class="w">        </span>:<span class="w"> </span>fedora-release-identity-container-38-36.noarch<span class="w">        </span><span class="m">7</span>/29
+<span class="w">      </span>Verifying<span class="w">        </span>:<span class="w"> </span>glibc-2.37-19.fc38.x86_64<span class="w">                             </span><span class="m">8</span>/29
+<span class="w">      </span>Verifying<span class="w">        </span>:<span class="w"> </span>glibc-2.37-18.fc38.x86_64<span class="w">                             </span><span class="m">9</span>/29
+<span class="w">      </span>Verifying<span class="w">        </span>:<span class="w"> </span>glibc-common-2.37-19.fc38.x86_64<span class="w">                     </span><span class="m">10</span>/29
+<span class="w">      </span>Verifying<span class="w">        </span>:<span class="w"> </span>glibc-common-2.37-18.fc38.x86_64<span class="w">                     </span><span class="m">11</span>/29
+<span class="w">      </span>Verifying<span class="w">        </span>:<span class="w"> </span>glibc-minimal-langpack-2.37-19.fc38.x86_64<span class="w">           </span><span class="m">12</span>/29
+<span class="w">      </span>Verifying<span class="w">        </span>:<span class="w"> </span>glibc-minimal-langpack-2.37-18.fc38.x86_64<span class="w">           </span><span class="m">13</span>/29
+<span class="w">      </span>Verifying<span class="w">        </span>:<span class="w"> </span>gnutls-3.8.5-1.fc38.x86_64<span class="w">                           </span><span class="m">14</span>/29
+<span class="w">      </span>Verifying<span class="w">        </span>:<span class="w"> </span>gnutls-3.8.4-1.fc38.x86_64<span class="w">                           </span><span class="m">15</span>/29
+<span class="w">      </span>Verifying<span class="w">        </span>:<span class="w"> </span>libnghttp2-1.52.0-3.fc38.x86_64<span class="w">                      </span><span class="m">16</span>/29
+<span class="w">      </span>Verifying<span class="w">        </span>:<span class="w"> </span>libnghttp2-1.52.0-2.fc38.x86_64<span class="w">                      </span><span class="m">17</span>/29
+<span class="w">      </span>Verifying<span class="w">        </span>:<span class="w"> </span>python-pip-wheel-22.3.1-4.fc38.noarch<span class="w">                </span><span class="m">18</span>/29
+<span class="w">      </span>Verifying<span class="w">        </span>:<span class="w"> </span>python-pip-wheel-22.3.1-3.fc38.noarch<span class="w">                </span><span class="m">19</span>/29
+<span class="w">      </span>Verifying<span class="w">        </span>:<span class="w"> </span>python3-3.11.9-2.fc38.x86_64<span class="w">                         </span><span class="m">20</span>/29
+<span class="w">      </span>Verifying<span class="w">        </span>:<span class="w"> </span>python3-3.11.8-2.fc38.x86_64<span class="w">                         </span><span class="m">21</span>/29
+<span class="w">      </span>Verifying<span class="w">        </span>:<span class="w"> </span>python3-libs-3.11.9-2.fc38.x86_64<span class="w">                    </span><span class="m">22</span>/29
+<span class="w">      </span>Verifying<span class="w">        </span>:<span class="w"> </span>python3-libs-3.11.8-2.fc38.x86_64<span class="w">                    </span><span class="m">23</span>/29
+<span class="w">      </span>Verifying<span class="w">        </span>:<span class="w"> </span>tpm2-tss-4.0.2-1.fc38.x86_64<span class="w">                         </span><span class="m">24</span>/29
+<span class="w">      </span>Verifying<span class="w">        </span>:<span class="w"> </span>tpm2-tss-4.0.1-3.fc38.x86_64<span class="w">                         </span><span class="m">25</span>/29
+<span class="w">      </span>Verifying<span class="w">        </span>:<span class="w"> </span>vim-data-2:9.1.393-1.fc38.noarch<span class="w">                     </span><span class="m">26</span>/29
+<span class="w">      </span>Verifying<span class="w">        </span>:<span class="w"> </span>vim-data-2:9.1.309-1.fc38.noarch<span class="w">                     </span><span class="m">27</span>/29
+<span class="w">      </span>Verifying<span class="w">        </span>:<span class="w"> </span>vim-minimal-2:9.1.393-1.fc38.x86_64<span class="w">                  </span><span class="m">28</span>/29
+<span class="w">      </span>Verifying<span class="w">        </span>:<span class="w"> </span>vim-minimal-2:9.1.309-1.fc38.x86_64<span class="w">                  </span><span class="m">29</span>/29
+
+<span class="w">    </span>Upgraded:
+<span class="w">      </span>fedora-release-common-38-37.noarch
+<span class="w">      </span>fedora-release-container-38-37.noarch
+<span class="w">      </span>fedora-release-identity-container-38-37.noarch
+<span class="w">      </span>glibc-2.37-19.fc38.x86_64
+<span class="w">      </span>glibc-common-2.37-19.fc38.x86_64
+<span class="w">      </span>glibc-minimal-langpack-2.37-19.fc38.x86_64
+<span class="w">      </span>gnutls-3.8.5-1.fc38.x86_64
+<span class="w">      </span>libnghttp2-1.52.0-3.fc38.x86_64
+<span class="w">      </span>python-pip-wheel-22.3.1-4.fc38.noarch
+<span class="w">      </span>python3-3.11.9-2.fc38.x86_64
+<span class="w">      </span>python3-libs-3.11.9-2.fc38.x86_64
+<span class="w">      </span>tpm2-tss-4.0.2-1.fc38.x86_64
+<span class="w">      </span>vim-data-2:9.1.393-1.fc38.noarch
+<span class="w">      </span>vim-minimal-2:9.1.393-1.fc38.x86_64
+<span class="w">    </span>Installed:
+<span class="w">      </span>libxcrypt-compat-4.4.36-1.fc38.x86_64
+
+<span class="w">    </span>Complete!
+<span class="w">    </span><span class="m">42</span><span class="w"> </span>files<span class="w"> </span><span class="nv">removed</span>
+<span class="o">==</span>&gt;<span class="w"> </span>aa51aa7:<span class="w"> </span>IMAGE<span class="w"> </span>/tmp/velocity/build/fedora-38-aa51aa7/aa51aa7.sif<span class="w"> </span><span class="o">(</span>fedora@38<span class="o">)</span><span class="w"> </span>BUILT<span class="w"> </span><span class="o">[</span><span class="m">0</span>:01:33<span class="o">]</span>
+
+<span class="o">==</span>&gt;<span class="w"> </span>BUILT:<span class="w"> </span>/tmp/velocity/fedora-38__x86_64-fedora.sif
 </pre></div>
 </div>
 </section>
 <section id="adding-different-versions">
 <h2>Adding Different Versions<a class="headerlink" href="#adding-different-versions" title="Link to this heading"></a></h2>
 <p>So now we have a base Fedora image. That’s great but before we move on let’s make some different versions of the image
-so that we have more options for building later. Go ahead and copy the <cite>fedora/38</cite> directory several times:</p>
-<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>cp<span class="w"> </span>-rf<span class="w"> </span>fedora/38/<span class="w"> </span>fedora/39
-cp<span class="w"> </span>-rf<span class="w"> </span>fedora/38/<span class="w"> </span>fedora/40
-cp<span class="w"> </span>-rf<span class="w"> </span>fedora/38/<span class="w"> </span>fedora/41
-</pre></div>
-</div>
-<p>For each of the versions you will need to go in and change the tag on the source. For example <cite>docker.io/fedora:38</cite>
-in <cite>fedora/40/template/fedora.vtmp</cite> should be changed to <cite>docker.io/fedora:40</cite>.</p>
+so that we have more options for building later. Edit the fedora <code class="docutils literal notranslate"><span class="pre">specs.yaml</span></code> and add some versions.</p>
 <div class="literal-block-wrapper docutils container" id="id4">
-<div class="code-block-caption"><span class="caption-text">VELOCITY_IMAGE_DIR</span><a class="headerlink" href="#id4" title="Link to this code"></a></div>
-<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>.
-└──<span class="w"> </span>fedora
-<span class="w">    </span>├──<span class="w"> </span><span class="m">38</span>
-<span class="w">    </span>│<span class="w">    </span>├──<span class="w"> </span>specifications.yaml
-<span class="w">    </span>│<span class="w">    </span>└──<span class="w"> </span>templates
-<span class="w">    </span>│<span class="w">        </span>└──<span class="w"> </span>fedora.vtmp
-<span class="w">    </span>├──<span class="w"> </span><span class="m">39</span>
-<span class="w">    </span>│<span class="w">    </span>├──<span class="w"> </span>specifications.yaml
-<span class="w">    </span>│<span class="w">    </span>└──<span class="w"> </span>templates
-<span class="w">    </span>│<span class="w">        </span>└──<span class="w"> </span>fedora.vtmp
-<span class="w">    </span>├──<span class="w"> </span><span class="m">40</span>
-<span class="w">    </span>│<span class="w">    </span>├──<span class="w"> </span>specifications.yaml
-<span class="w">    </span>│<span class="w">    </span>└──<span class="w"> </span>templates
-<span class="w">    </span>│<span class="w">        </span>└──<span class="w"> </span>fedora.vtmp
-<span class="w">    </span>└──<span class="w"> </span><span class="m">41</span>
-<span class="w">        </span>├──<span class="w"> </span>specifications.yaml
-<span class="w">        </span>└──<span class="w"> </span>templates
-<span class="w">            </span>└──<span class="w"> </span>fedora.vtmp
+<div class="code-block-caption"><span class="caption-text">spec.yaml</span><a class="headerlink" href="#id4" title="Link to this code"></a></div>
+<div class="highlight-yaml notranslate"><div class="highlight"><pre><span></span><span class="nt">versions</span><span class="p">:</span>
+<span class="w">  </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">spec</span><span class="p">:</span>
+<span class="w">      </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">38</span>
+<span class="w">      </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">39</span>
+<span class="w">      </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">40</span>
+<span class="w">      </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">41</span>
+<span class="w">    </span><span class="nt">when</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">distro=fedora</span>
 </pre></div>
 </div>
 </div>
 <div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>user@hostname:~$<span class="w"> </span>velocity<span class="w"> </span><span class="nv">avail</span>
-<span class="o">==</span>&gt;<span class="w"> </span>System:<span class="w"> </span><span class="nv">x86_64</span>
-<span class="o">==</span>&gt;<span class="w"> </span>Backend:<span class="w"> </span><span class="nv">podman</span>
-<span class="o">==</span>&gt;<span class="w"> </span>Distro:<span class="w"> </span><span class="nv">fedora</span>
-
 <span class="o">==</span>&gt;<span class="w"> </span>fedora
-<span class="w">        </span><span class="m">38</span>
-<span class="w">        </span><span class="m">39</span>
-<span class="w">        </span><span class="m">40</span>
-<span class="w">        </span><span class="m">41</span>
+<span class="w">    </span><span class="m">38</span>
+<span class="w">    </span><span class="m">39</span>
+<span class="w">    </span><span class="m">40</span>
+<span class="w">    </span><span class="m">41</span>
 </pre></div>
 </div>
 </section>
 <section id="specifying-version">
 <h2>Specifying Version<a class="headerlink" href="#specifying-version" title="Link to this heading"></a></h2>
-<p>When building an image Velocity will default to the latest image. To specify a version use <cite>&lt;image&gt;&#64;=&lt;version&gt;</cite> e.g.
-fedora&#64;=40. Versions are compared by splitting the version string up based on periods and then comparing the sections
-left to right alphanumerically.</p>
+<p>When building an image Velocity will default to the latest image. To specify a version use <code class="docutils literal notranslate"><span class="pre">&lt;image&gt;&#64;&lt;version&gt;</span></code> e.g.
+<code class="docutils literal notranslate"><span class="pre">fedora&#64;40</span></code>. Versions take the form <code class="docutils literal notranslate"><span class="pre">&lt;major&gt;.&lt;minor&gt;.&lt;patch&gt;-&lt;suffix&gt;</span></code>. You can also specify greater than, less
+than, and in-between via <code class="docutils literal notranslate"><span class="pre">&lt;image&gt;&#64;&lt;version&gt;:</span></code>, <code class="docutils literal notranslate"><span class="pre">&lt;image&gt;&#64;:&lt;version&gt;</span></code> and <code class="docutils literal notranslate"><span class="pre">&lt;image&gt;&#64;&lt;version&gt;:&lt;version&gt;</span></code> respectively.</p>
 </section>
 <section id="hello-world">
 <h2>Hello World!<a class="headerlink" href="#hello-world" title="Link to this heading"></a></h2>
 <p>Now let’s get a little more complicated. Let’s create an image that runs a python script which prints hello world. You
 can give it whatever version you want:</p>
 <div class="literal-block-wrapper docutils container" id="id5">
-<div class="code-block-caption"><span class="caption-text">VELOCITY_IMAGE_DIR</span><a class="headerlink" href="#id5" title="Link to this code"></a></div>
-<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>.
-├──<span class="w"> </span>fedora
-│<span class="w">    </span>├──<span class="w"> </span><span class="m">38</span>
-│<span class="w">    </span>│<span class="w">   </span>├──<span class="w"> </span>specifications.yaml
-│<span class="w">    </span>│<span class="w">   </span>└──<span class="w"> </span>templates
-│<span class="w">    </span>│<span class="w">       </span>└──<span class="w"> </span>fedora.vtmp
-│<span class="w">    </span>├──<span class="w"> </span><span class="m">39</span>
-│<span class="w">    </span>│<span class="w">   </span>├──<span class="w"> </span>specifications.yaml
-│<span class="w">    </span>│<span class="w">   </span>└──<span class="w"> </span>templates
-│<span class="w">    </span>│<span class="w">       </span>└──<span class="w"> </span>fedora.vtmp
-│<span class="w">    </span>├──<span class="w"> </span><span class="m">40</span>
-│<span class="w">    </span>│<span class="w">   </span>├──<span class="w"> </span>specifications.yaml
-│<span class="w">    </span>│<span class="w">   </span>└──<span class="w"> </span>templates
-│<span class="w">    </span>│<span class="w">       </span>└──<span class="w"> </span>fedora.vtmp
-│<span class="w">    </span>└──<span class="w"> </span><span class="m">41</span>
-│<span class="w">        </span>├──<span class="w"> </span>specifications.yaml
-│<span class="w">        </span>└──<span class="w"> </span>templates
-│<span class="w">            </span>└──<span class="w"> </span>fedora.vtmp
-└──<span class="w"> </span>hello-world
-<span class="w">    </span>└──<span class="w"> </span><span class="m">1</span>.0
-<span class="w">        </span>├──<span class="w"> </span>x86_64
-<span class="w">        </span>│<span class="w">   </span>└──<span class="w"> </span>hello_world.py
-<span class="w">        </span>├──<span class="w"> </span>specifications.yaml
-<span class="w">        </span>└──<span class="w"> </span>templates
-<span class="w">            </span>└──<span class="w"> </span>fedora.vtmp
+<div class="code-block-caption"><span class="caption-text">/tmp/velocity/images</span><a class="headerlink" href="#id5" title="Link to this code"></a></div>
+<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>fedora
+├──<span class="w"> </span>specs.yaml
+└──<span class="w"> </span>templates
+<span class="w">    </span>└──<span class="w"> </span>default.vtmp
+hello-world
+├──<span class="w"> </span>files
+│<span class="w">   </span>└──<span class="w"> </span>hello_world.py
+├──<span class="w"> </span>specs.yaml
+└──<span class="w"> </span>templates
+<span class="w">    </span>└──<span class="w"> </span>default.vtmp
 </pre></div>
 </div>
 </div>
-<p>Notice that now there is a new folder called <cite>x86_64</cite> with a python file in it.</p>
+<p>Notice that now there is a new folder called <code class="docutils literal notranslate"><span class="pre">files</span></code> with a python script in it.</p>
 <div class="literal-block-wrapper docutils container" id="id6">
-<div class="code-block-caption"><span class="caption-text">hello-world/1.0/x86_64/hello_world.py</span><a class="headerlink" href="#id6" title="Link to this code"></a></div>
+<div class="code-block-caption"><span class="caption-text">hello_world.py</span><a class="headerlink" href="#id6" title="Link to this code"></a></div>
 <div class="highlight-bash notranslate"><div class="highlight"><pre><span></span><span class="ch">#!/usr/bin/env python3</span>
 
 print<span class="o">(</span><span class="s2">&quot;Hello, World!&quot;</span><span class="o">)</span>
@@ -518,484 +369,226 @@ <h2>Hello World!<a class="headerlink" href="#hello-world" title="Link to this he
 </div>
 </div>
 <div class="literal-block-wrapper docutils container" id="id7">
-<div class="code-block-caption"><span class="caption-text">hello-world/1.0/specifications.yaml</span><a class="headerlink" href="#id7" title="Link to this code"></a></div>
-<div class="highlight-yaml notranslate"><div class="highlight"><pre><span></span><span class="nt">build_specifications</span><span class="p">:</span>
-
-<span class="w">  </span><span class="nt">x86_64</span><span class="p">:</span>
-<span class="w">    </span><span class="nt">podman</span><span class="p">:</span>
-<span class="w">      </span><span class="nt">fedora</span><span class="p">:</span>
-<span class="w">        </span><span class="nt">dependencies</span><span class="p">:</span>
-<span class="w">          </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">fedora</span>
-<span class="w">        </span><span class="nt">variables</span><span class="p">:</span>
-<span class="w">          </span><span class="nt">fr</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">fakeroot</span>
+<div class="code-block-caption"><span class="caption-text">specs.yaml</span><a class="headerlink" href="#id7" title="Link to this code"></a></div>
+<div class="highlight-yaml notranslate"><div class="highlight"><pre><span></span><span class="nt">versions</span><span class="p">:</span>
+<span class="w">  </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">spec</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">1.0</span>
+<span class="nt">dependencies</span><span class="p">:</span>
+<span class="w">  </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">spec</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">fedora</span>
+<span class="w">    </span><span class="nt">when</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">distro=fedora</span>
+<span class="nt">files</span><span class="p">:</span>
+<span class="w">  </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">hello_world.py</span>
 </pre></div>
 </div>
 </div>
 <div class="literal-block-wrapper docutils container" id="id8">
-<div class="code-block-caption"><span class="caption-text">hello-world/1.0/templates/fedora.vtmp</span><a class="headerlink" href="#id8" title="Link to this code"></a></div>
+<div class="code-block-caption"><span class="caption-text">default.vtmp</span><a class="headerlink" href="#id8" title="Link to this code"></a></div>
 <div class="highlight-text notranslate"><div class="highlight"><pre><span></span>@from
-    %(__base__)
+    {{ __base__ }}
 
 @copy
-    hello_world.py /hello_world.py
+    hello_world.py /hello_world
 
-@entry
-    /hello_world.py
+@run
+    dnf -y install python3
+    chmod +x /hello_world
 
-@label
-    velocity.image.%(__name__)__%(__tag__) %(__hash__)
+@entry
+    /hello_world
 </pre></div>
 </div>
 </div>
 <div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>user@hostname:~$<span class="w"> </span>velocity<span class="w"> </span><span class="nv">avail</span>
-<span class="o">==</span>&gt;<span class="w"> </span>System:<span class="w"> </span><span class="nv">x86_64</span>
-<span class="o">==</span>&gt;<span class="w"> </span>Backend:<span class="w"> </span><span class="nv">podman</span>
-<span class="o">==</span>&gt;<span class="w"> </span>Distro:<span class="w"> </span><span class="nv">fedora</span>
-
 <span class="o">==</span>&gt;<span class="w"> </span>fedora
-<span class="w">        </span><span class="m">38</span>
-<span class="w">        </span><span class="m">39</span>
-<span class="w">        </span><span class="m">40</span>
-<span class="w">        </span><span class="nv">41</span>
+<span class="w">    </span><span class="m">38</span>
+<span class="w">    </span><span class="m">39</span>
+<span class="w">    </span><span class="m">40</span>
+<span class="w">    </span><span class="nv">41</span>
 <span class="o">==</span>&gt;<span class="w"> </span>hello-world
-<span class="w">        </span><span class="m">1</span>.0
+<span class="w">    </span><span class="m">1</span>.0
 </pre></div>
 </div>
 <div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>user@hostname:~$<span class="w"> </span>velocity<span class="w"> </span>build<span class="w"> </span>hello-world<span class="w"> </span>-v
-<span class="o">==</span>&gt;<span class="w"> </span>System:<span class="w"> </span><span class="nv">x86_64</span>
-<span class="o">==</span>&gt;<span class="w"> </span>Backend:<span class="w"> </span><span class="nv">podman</span>
-<span class="o">==</span>&gt;<span class="w"> </span>Distro:<span class="w"> </span><span class="nv">fedora</span>
-
 <span class="o">==</span>&gt;<span class="w"> </span>Build<span class="w"> </span>Order:
-<span class="w">        </span>fedora@<span class="o">=</span><span class="m">41</span>
-<span class="w">        </span>hello-world@<span class="o">=</span><span class="m">1</span>.0
-
-<span class="o">==</span>&gt;<span class="w"> </span>wmrxxohy:<span class="w"> </span>BUILD<span class="w"> </span>fedora@<span class="o">=</span><span class="m">41</span><span class="w"> </span>...
-<span class="o">==</span>&gt;<span class="w"> </span>wmrxxohy:<span class="w"> </span>GENERATING<span class="w"> </span>SCRIPT<span class="w"> </span>...
-<span class="w">        </span>SCRIPT:<span class="w"> </span>/tmp/velocity/build/wmrxxohy/script
-<span class="w">        </span>FROM<span class="w"> </span>docker.io/fedora:41
-
-<span class="w">        </span>RUN<span class="w"> </span>dnf<span class="w"> </span>-y<span class="w"> </span>upgrade
-
-<span class="w">        </span>LABEL<span class="w"> </span>velocity.config.system<span class="o">=</span><span class="s2">&quot;x86_64&quot;</span><span class="w"> </span><span class="se">\</span>
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-<span class="w">            </span>velocity.config.distro<span class="o">=</span><span class="s2">&quot;fedora&quot;</span><span class="w"> </span><span class="se">\</span>
-<span class="w">            </span>velocity.image.fedora__41<span class="o">=</span><span class="s2">&quot;1ad7926d7e542fa521fe4a2eca54aa73caea82958b1f07adf04728b5762063ac&quot;</span>
-
-<span class="o">==</span>&gt;<span class="w"> </span>wmrxxohy:<span class="w"> </span>BUILDING<span class="w"> </span>...
-<span class="w">        </span><span class="c1">#!/usr/bin/env bash</span>
-<span class="w">        </span>podman<span class="w"> </span>build<span class="w"> </span>-f<span class="w"> </span>/tmp/velocity/build/wmrxxohy/script<span class="w"> </span>-t<span class="w"> </span>localhost/wmrxxohy:latest<span class="w"> </span>.<span class="p">;</span>
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-<span class="w">        </span>STEP<span class="w"> </span><span class="m">2</span>/3:<span class="w"> </span>RUN<span class="w"> </span>dnf<span class="w"> </span>-y<span class="w"> </span>upgrade
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-<span class="w">        </span>Dependencies<span class="w"> </span>resolved.
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-<span class="w">         </span>Package<span class="w">                             </span>Arch<span class="w">    </span>Version<span class="w">                    </span>Repo<span class="w">      </span><span class="nv">Size</span>
-<span class="w">        </span><span class="o">======================================================================================</span>
-<span class="w">        </span>Upgrading:
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-<span class="w">         </span>libassuan<span class="w">                           </span>x86_64<span class="w">  </span><span class="m">2</span>.5.7-1.fc41<span class="w">               </span>rawhide<span class="w">   </span><span class="m">67</span><span class="w"> </span>k
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-<span class="w">         </span>libcurl<span class="w">                             </span>x86_64<span class="w">  </span><span class="m">8</span>.6.0-7.fc41<span class="w">               </span>rawhide<span class="w">  </span><span class="m">345</span><span class="w"> </span>k
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-<span class="w">         </span>libgcrypt<span class="w">                           </span>x86_64<span class="w">  </span><span class="m">1</span>.10.3-4.fc41<span class="w">              </span>rawhide<span class="w">  </span><span class="m">504</span><span class="w"> </span>k
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-<span class="w">         </span>libgpg-error<span class="w">                        </span>x86_64<span class="w">  </span><span class="m">1</span>.48-1.fc41<span class="w">                </span>rawhide<span class="w">  </span><span class="m">232</span><span class="w"> </span>k
-<span class="w">         </span>libksba<span class="w">                             </span>x86_64<span class="w">  </span><span class="m">1</span>.6.6-1.fc41<span class="w">               </span>rawhide<span class="w">  </span><span class="m">159</span><span class="w"> </span>k
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-<span class="w">         </span>sqlite-libs<span class="w">                         </span>x86_64<span class="w">  </span><span class="m">3</span>.45.2-1.fc41<span class="w">              </span>rawhide<span class="w">  </span><span class="m">706</span><span class="w"> </span>k
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-<span class="w">         </span>util-linux-core<span class="w">                     </span>x86_64<span class="w">  </span><span class="m">2</span>.40-0.12.fc41<span class="w">             </span>rawhide<span class="w">  </span><span class="m">537</span><span class="w"> </span>k
-<span class="w">         </span>vim-data<span class="w">                            </span>noarch<span class="w">  </span><span class="m">2</span>:9.1.181-1.fc41<span class="w">           </span>rawhide<span class="w">   </span><span class="m">23</span><span class="w"> </span>k
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-
-<span class="w">        </span>Transaction<span class="w"> </span><span class="nv">Summary</span>
-<span class="w">        </span><span class="o">======================================================================================</span>
-<span class="w">        </span>Upgrade<span class="w">  </span><span class="m">65</span><span class="w"> </span>Packages
-
-<span class="w">        </span>Total<span class="w"> </span>download<span class="w"> </span>size:<span class="w"> </span><span class="m">38</span><span class="w"> </span>M
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-<span class="w">        </span><span class="o">(</span><span class="m">23</span>/65<span class="o">)</span>:<span class="w"> </span>gnutls-3.8.4-1.fc41.x86_64.rpm<span class="w">         </span><span class="m">668</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">1</span>.1<span class="w"> </span>MB<span class="w">     </span><span class="m">00</span>:01
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-<span class="w">        </span><span class="o">(</span><span class="m">25</span>/65<span class="o">)</span>:<span class="w"> </span>libdnf-0.73.1-1.fc41.x86_64.rpm<span class="w">        </span><span class="m">1</span>.6<span class="w"> </span>MB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">697</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">26</span>/65<span class="o">)</span>:<span class="w"> </span>libffi-3.4.6-1.fc41.x86_64.rpm<span class="w">         </span><span class="m">205</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">40</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
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-<span class="w">        </span><span class="o">(</span><span class="m">28</span>/65<span class="o">)</span>:<span class="w"> </span>libgomp-14.0.1-0.13.fc41.x86_64.rpm<span class="w">    </span><span class="m">642</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">344</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
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-<span class="w">        </span><span class="o">(</span><span class="m">32</span>/65<span class="o">)</span>:<span class="w"> </span>libcurl-8.6.0-7.fc41.x86_64.rpm<span class="w">        </span><span class="m">140</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">345</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:02
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-<span class="w">        </span><span class="o">(</span><span class="m">34</span>/65<span class="o">)</span>:<span class="w"> </span>libmount-2.40-0.12.fc41.x86_64.rpm<span class="w">     </span><span class="m">271</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">155</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">35</span>/65<span class="o">)</span>:<span class="w"> </span>libreport-filesystem-2.17.15-1.fc41.no<span class="w">  </span><span class="m">82</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">14</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">36</span>/65<span class="o">)</span>:<span class="w"> </span>librepo-1.17.1-1.fc41.x86_64.rpm<span class="w">       </span><span class="m">501</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">99</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
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-<span class="w">        </span><span class="o">(</span><span class="m">38</span>/65<span class="o">)</span>:<span class="w"> </span>libssh-0.10.6-6.fc41.x86_64.rpm<span class="w">        </span><span class="m">744</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">212</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">39</span>/65<span class="o">)</span>:<span class="w"> </span>libssh-config-0.10.6-6.fc41.noarch.rpm<span class="w">  </span><span class="m">74</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">9</span>.1<span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">40</span>/65<span class="o">)</span>:<span class="w"> </span>libtirpc-1.3.4-1.rc3.fc41.x86_64.rpm<span class="w">   </span><span class="m">357</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">92</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">41</span>/65<span class="o">)</span>:<span class="w"> </span>libstdc++-14.0.1-0.13.fc41.x86_64.rpm<span class="w">  </span><span class="m">837</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">881</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:01
-<span class="w">        </span><span class="o">(</span><span class="m">42</span>/65<span class="o">)</span>:<span class="w"> </span>libnghttp2-1.60.0-2.fc41.x86_64.rpm<span class="w">     </span><span class="m">35</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">76</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:02
-<span class="w">        </span><span class="o">(</span><span class="m">43</span>/65<span class="o">)</span>:<span class="w"> </span>libuuid-2.40-0.12.fc41.x86_64.rpm<span class="w">      </span><span class="m">208</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">29</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
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-<span class="w">        </span><span class="o">(</span><span class="m">45</span>/65<span class="o">)</span>:<span class="w"> </span>npth-1.7-1.fc41.x86_64.rpm<span class="w">             </span><span class="m">187</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">25</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">46</span>/65<span class="o">)</span>:<span class="w"> </span>libzstd-1.5.6-1.fc41.x86_64.rpm<span class="w">        </span><span class="m">767</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">309</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">47</span>/65<span class="o">)</span>:<span class="w"> </span>pcre2-10.43-1.fc41.x86_64.rpm<span class="w">          </span><span class="m">611</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">242</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">48</span>/65<span class="o">)</span>:<span class="w"> </span>pcre2-syntax-10.43-1.fc41.noarch.rpm<span class="w">   </span><span class="m">386</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">149</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">49</span>/65<span class="o">)</span>:<span class="w"> </span>python-pip-wheel-24.0-2.fc41.noarch.rp<span class="w"> </span><span class="m">640</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">1</span>.5<span class="w"> </span>MB<span class="w">     </span><span class="m">00</span>:02
-<span class="w">        </span><span class="o">(</span><span class="m">50</span>/65<span class="o">)</span>:<span class="w"> </span>python3-3.12.2-3.fc41.x86_64.rpm<span class="w">       </span><span class="m">203</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">27</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">[</span>MIRROR<span class="o">]</span><span class="w"> </span>python3-dnf-4.19.2-1.fc41.noarch.rpm:<span class="w"> </span>Status<span class="w"> </span>code:<span class="w"> </span><span class="m">404</span><span class="w"> </span><span class="k">for</span><span class="w"> </span>http://mirror.math.princeton.edu/pub/fedora/linux/development/rawhide/Everything/x86_64/os/Packages/p/python3-dnf-4.19.2-1.fc41.noarch.rpm<span class="w"> </span><span class="o">(</span>IP:<span class="w"> </span><span class="m">128</span>.112.18.21<span class="o">)</span>
-<span class="w">        </span><span class="o">(</span><span class="m">51</span>/65<span class="o">)</span>:<span class="w"> </span>libxml2-2.12.6-1.fc41.x86_64.rpm<span class="w">       </span><span class="m">168</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">686</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:04
-<span class="w">        </span><span class="o">(</span><span class="m">52</span>/65<span class="o">)</span>:<span class="w"> </span>openssl-libs-3.2.1-3.fc41.x86_64.rpm<span class="w">   </span><span class="m">554</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">2</span>.3<span class="w"> </span>MB<span class="w">     </span><span class="m">00</span>:04
-<span class="w">        </span><span class="o">(</span><span class="m">53</span>/65<span class="o">)</span>:<span class="w"> </span>python3-hawkey-0.73.1-1.fc41.x86_64.rp<span class="w"> </span><span class="m">130</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">105</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">54</span>/65<span class="o">)</span>:<span class="w"> </span>python3-dnf-4.19.2-1.fc41.noarch.rpm<span class="w">   </span><span class="m">425</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">594</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:01
-<span class="w">        </span><span class="o">(</span><span class="m">55</span>/65<span class="o">)</span>:<span class="w"> </span>shadow-utils-4.15.1-2.fc41.x86_64.rpm<span class="w">  </span><span class="m">3</span>.5<span class="w"> </span>MB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">1</span>.3<span class="w"> </span>MB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">56</span>/65<span class="o">)</span>:<span class="w"> </span>sqlite-libs-3.45.2-1.fc41.x86_64.rpm<span class="w">   </span><span class="m">2</span>.8<span class="w"> </span>MB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">706</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">57</span>/65<span class="o">)</span>:<span class="w"> </span>python3-libdnf-0.73.1-1.fc41.x86_64.rp<span class="w"> </span><span class="m">678</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">847</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:01
-<span class="w">        </span><span class="o">(</span><span class="m">58</span>/65<span class="o">)</span>:<span class="w"> </span>systemd-libs-255.4-1.fc41.x86_64.rpm<span class="w">   </span><span class="m">2</span>.9<span class="w"> </span>MB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">708</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">59</span>/65<span class="o">)</span>:<span class="w"> </span>util-linux-core-2.40-0.12.fc41.x86_64.<span class="w"> </span><span class="m">3</span>.0<span class="w"> </span>MB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">537</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">60</span>/65<span class="o">)</span>:<span class="w"> </span>tzdata-2024a-4.fc41.noarch.rpm<span class="w">         </span><span class="m">1</span>.5<span class="w"> </span>MB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">716</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">61</span>/65<span class="o">)</span>:<span class="w"> </span>vim-data-9.1.181-1.fc41.noarch.rpm<span class="w">     </span><span class="m">125</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">23</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">62</span>/65<span class="o">)</span>:<span class="w"> </span>xz-libs-5.4.6-3.fc41.x86_64.rpm<span class="w">        </span><span class="m">530</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">110</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">63</span>/65<span class="o">)</span>:<span class="w"> </span>yum-4.19.2-1.fc41.noarch.rpm<span class="w">           </span><span class="m">215</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">37</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:00
-<span class="w">        </span><span class="o">(</span><span class="m">64</span>/65<span class="o">)</span>:<span class="w"> </span>python3-libs-3.12.2-3.fc41.x86_64.rpm<span class="w">  </span><span class="m">3</span>.5<span class="w"> </span>MB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">9</span>.1<span class="w"> </span>MB<span class="w">     </span><span class="m">00</span>:02
-<span class="w">        </span><span class="o">(</span><span class="m">65</span>/65<span class="o">)</span>:<span class="w"> </span>vim-minimal-9.1.181-1.fc41.x86_64.rpm<span class="w">  </span><span class="m">218</span><span class="w"> </span>kB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">807</span><span class="w"> </span>kB<span class="w">     </span><span class="m">00</span>:03
-<span class="w">        </span>--------------------------------------------------------------------------------
-<span class="w">        </span>Total<span class="w">                                           </span><span class="m">2</span>.0<span class="w"> </span>MB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">38</span><span class="w"> </span>MB<span class="w">     </span><span class="m">00</span>:19
-<span class="w">        </span>Running<span class="w"> </span>transaction<span class="w"> </span>check
-<span class="w">        </span>Transaction<span class="w"> </span>check<span class="w"> </span>succeeded.
-<span class="w">        </span>Running<span class="w"> </span>transaction<span class="w"> </span><span class="nb">test</span>
-<span class="w">        </span>Transaction<span class="w"> </span><span class="nb">test</span><span class="w"> </span>succeeded.
-<span class="w">        </span>Running<span class="w"> </span>transaction
-<span class="w">          </span>Preparing<span class="w">        </span>:<span class="w">                                                        </span><span class="m">1</span>/1
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>libgcc-14.0.1-0.13.fc41.x86_64<span class="w">                       </span><span class="m">1</span>/130
-<span class="w">          </span>Running<span class="w"> </span>scriptlet:<span class="w"> </span>libgcc-14.0.1-0.13.fc41.x86_64<span class="w">                       </span><span class="m">1</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>tzdata-2024a-4.fc41.noarch<span class="w">                           </span><span class="m">2</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>crypto-policies-20240320-1.git58e3d95.fc41.noarc<span class="w">     </span><span class="m">3</span>/130
-<span class="w">          </span>Running<span class="w"> </span>scriptlet:<span class="w"> </span>crypto-policies-20240320-1.git58e3d95.fc41.noarc<span class="w">     </span><span class="m">3</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>glibc-common-2.39.9000-10.fc41.x86_64<span class="w">                </span><span class="m">4</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>glibc-minimal-langpack-2.39.9000-10.fc41.x86_64<span class="w">      </span><span class="m">5</span>/130
-<span class="w">          </span>Running<span class="w"> </span>scriptlet:<span class="w"> </span>glibc-2.39.9000-10.fc41.x86_64<span class="w">                       </span><span class="m">6</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>glibc-2.39.9000-10.fc41.x86_64<span class="w">                       </span><span class="m">6</span>/130
-<span class="w">          </span>Running<span class="w"> </span>scriptlet:<span class="w"> </span>glibc-2.39.9000-10.fc41.x86_64<span class="w">                       </span><span class="m">6</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>libgpg-error-1.48-1.fc41.x86_64<span class="w">                      </span><span class="m">7</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>libuuid-2.40-0.12.fc41.x86_64<span class="w">                        </span><span class="m">8</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>openssl-libs-1:3.2.1-3.fc41.x86_64<span class="w">                   </span><span class="m">9</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>xz-libs-1:5.4.6-3.fc41.x86_64<span class="w">                       </span><span class="m">10</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>libsmartcols-2.40-0.12.fc41.x86_64<span class="w">                  </span><span class="m">11</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>libstdc++-14.0.1-0.13.fc41.x86_64<span class="w">                   </span><span class="m">12</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>libzstd-1.5.6-1.fc41.x86_64<span class="w">                         </span><span class="m">13</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>sqlite-libs-3.45.2-1.fc41.x86_64<span class="w">                    </span><span class="m">14</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>libblkid-2.40-0.12.fc41.x86_64<span class="w">                      </span><span class="m">15</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>libmount-2.40-0.12.fc41.x86_64<span class="w">                      </span><span class="m">16</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>libffi-3.4.6-1.fc41.x86_64<span class="w">                          </span><span class="m">17</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>fedora-release-identity-container-41-0.6.noarch<span class="w">     </span><span class="m">18</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>fedora-release-container-41-0.6.noarch<span class="w">              </span><span class="m">19</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>fedora-release-common-41-0.6.noarch<span class="w">                 </span><span class="m">20</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>elfutils-libelf-0.191-5.fc41.x86_64<span class="w">                 </span><span class="m">21</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>systemd-libs-255.4-1.fc41.x86_64<span class="w">                    </span><span class="m">22</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>libxml2-2.12.6-1.fc41.x86_64<span class="w">                        </span><span class="m">23</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>libassuan-2.5.7-1.fc41.x86_64<span class="w">                       </span><span class="m">24</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>libgcrypt-1.10.3-4.fc41.x86_64<span class="w">                      </span><span class="m">25</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>libksba-1.6.6-1.fc41.x86_64<span class="w">                         </span><span class="m">26</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>audit-libs-4.0.1-1.fc41.x86_64<span class="w">                      </span><span class="m">27</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>authselect-libs-1.5.0-5.fc41.x86_64<span class="w">                 </span><span class="m">28</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>expat-2.6.2-1.fc41.x86_64<span class="w">                           </span><span class="m">29</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>gmp-1:6.3.0-1.fc41.x86_64<span class="w">                           </span><span class="m">30</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>libeconf-0.6.2-1.fc41.x86_64<span class="w">                        </span><span class="m">31</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>libnghttp2-1.60.0-2.fc41.x86_64<span class="w">                     </span><span class="m">32</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>libtirpc-1.3.4-1.rc3.fc41.x86_64<span class="w">                    </span><span class="m">33</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>libunistring-1.1-7.fc41.x86_64<span class="w">                      </span><span class="m">34</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>gnutls-3.8.4-1.fc41.x86_64<span class="w">                          </span><span class="m">35</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>npth-1.7-1.fc41.x86_64<span class="w">                              </span><span class="m">36</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>vim-data-2:9.1.181-1.fc41.noarch<span class="w">                    </span><span class="m">37</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>python-pip-wheel-24.0-2.fc41.noarch<span class="w">                 </span><span class="m">38</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>python3-3.12.2-3.fc41.x86_64<span class="w">                        </span><span class="m">39</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>python3-libs-3.12.2-3.fc41.x86_64<span class="w">                   </span><span class="m">40</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>pcre2-syntax-10.43-1.fc41.noarch<span class="w">                    </span><span class="m">41</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>pcre2-10.43-1.fc41.x86_64<span class="w">                           </span><span class="m">42</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>glib2-2.80.0-1.fc41.x86_64<span class="w">                          </span><span class="m">43</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>libmodulemd-2.15.0-9.fc41.x86_64<span class="w">                    </span><span class="m">44</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>libssh-config-0.10.6-6.fc41.noarch<span class="w">                  </span><span class="m">45</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>libssh-0.10.6-6.fc41.x86_64<span class="w">                         </span><span class="m">46</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>libcurl-8.6.0-7.fc41.x86_64<span class="w">                         </span><span class="m">47</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>librepo-1.17.1-1.fc41.x86_64<span class="w">                        </span><span class="m">48</span>/130
-<span class="w">          </span>Upgrading<span class="w">        </span>:<span class="w"> </span>libdnf-0.73.1-1.fc41.x86_64<span class="w">                         </span><span class="m">49</span>/130
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-<span class="w">          </span>libzstd-1.5.6-1.fc41.x86_64
-<span class="w">          </span>npth-1.7-1.fc41.x86_64
-<span class="w">          </span>openssl-libs-1:3.2.1-3.fc41.x86_64
-<span class="w">          </span>pcre2-10.43-1.fc41.x86_64
-<span class="w">          </span>pcre2-syntax-10.43-1.fc41.noarch
-<span class="w">          </span>python-pip-wheel-24.0-2.fc41.noarch
-<span class="w">          </span>python3-3.12.2-3.fc41.x86_64
-<span class="w">          </span>python3-dnf-4.19.2-1.fc41.noarch
-<span class="w">          </span>python3-hawkey-0.73.1-1.fc41.x86_64
-<span class="w">          </span>python3-libdnf-0.73.1-1.fc41.x86_64
-<span class="w">          </span>python3-libs-3.12.2-3.fc41.x86_64
-<span class="w">          </span>shadow-utils-2:4.15.1-2.fc41.x86_64
-<span class="w">          </span>sqlite-libs-3.45.2-1.fc41.x86_64
-<span class="w">          </span>systemd-libs-255.4-1.fc41.x86_64
-<span class="w">          </span>tzdata-2024a-4.fc41.noarch
-<span class="w">          </span>util-linux-core-2.40-0.12.fc41.x86_64
-<span class="w">          </span>vim-data-2:9.1.181-1.fc41.noarch
-<span class="w">          </span>vim-minimal-2:9.1.181-1.fc41.x86_64
-<span class="w">          </span>xz-libs-1:5.4.6-3.fc41.x86_64
-<span class="w">          </span>yum-4.19.2-1.fc41.noarch
-
-<span class="w">        </span>Complete!
-<span class="w">        </span>--&gt;<span class="w"> </span>43089713ea9
-<span class="w">        </span>STEP<span class="w"> </span><span class="m">3</span>/3:<span class="w"> </span>LABEL<span class="w"> </span>velocity.config.system<span class="o">=</span><span class="s2">&quot;x86_64&quot;</span><span class="w">     </span>velocity.config.backend<span class="o">=</span><span class="s2">&quot;podman&quot;</span><span class="w">     </span>velocity.config.distro<span class="o">=</span><span class="s2">&quot;fedora&quot;</span><span class="w">     </span>velocity.image.fedora__41<span class="o">=</span><span class="s2">&quot;1ad7926d7e542fa521fe4a2eca54aa73caea82958b1f07adf04728b5762063ac&quot;</span>
-<span class="w">        </span>COMMIT<span class="w"> </span>localhost/wmrxxohy:latest
-<span class="w">        </span>--&gt;<span class="w"> </span>49321c240b5
-<span class="w">        </span>Successfully<span class="w"> </span>tagged<span class="w"> </span>localhost/wmrxxohy:latest
-<span class="w">        </span><span class="nv">49321c240b522a0d66cd30b62addc99e87b5861e2e6c27f6d0136968c73be5aa</span>
-<span class="o">==</span>&gt;<span class="w"> </span>wmrxxohy:<span class="w"> </span>IMAGE<span class="w"> </span>localhost/wmrxxohy:latest<span class="w"> </span><span class="o">(</span>fedora@<span class="o">=</span><span class="m">41</span><span class="o">)</span><span class="w"> </span>BUILT<span class="w"> </span><span class="o">[</span><span class="m">0</span>:01:02<span class="o">]</span>
-
-<span class="o">==</span>&gt;<span class="w"> </span>bdvdbcor:<span class="w"> </span>BUILD<span class="w"> </span>hello-world@<span class="o">=</span><span class="m">1</span>.0<span class="w"> </span>...
-<span class="o">==</span>&gt;<span class="w"> </span>bdvdbcor:<span class="w"> </span>COPYING<span class="w"> </span>FILES<span class="w"> </span>...
-<span class="w">        </span>FILE:<span class="w"> </span>/home/xjv/tmp/hello-world/1.0/x86_64/hello_world.py<span class="w"> </span>-&gt;<span class="w"> </span>/tmp/velocity/build/bdvdbcor/hello_world.py
-<span class="o">==</span>&gt;<span class="w"> </span>bdvdbcor:<span class="w"> </span>GENERATING<span class="w"> </span>SCRIPT<span class="w"> </span>...
-<span class="w">        </span>SCRIPT:<span class="w"> </span>/tmp/velocity/build/bdvdbcor/script
-<span class="w">        </span>FROM<span class="w"> </span>localhost/wmrxxohy:latest
-
-<span class="w">        </span>COPY<span class="w"> </span>hello_world.py<span class="w"> </span>/hello_world.py
-
-<span class="w">        </span>LABEL<span class="w"> </span>velocity.image.hello-world__1.0<span class="o">=</span><span class="s2">&quot;1b080f458c34ae2759d1eb3e8464d3d508e3bcb981a476f70709b0f20b6218bb&quot;</span>
-
-<span class="w">        </span>ENTRYPOINT<span class="w"> </span><span class="o">[</span><span class="s1">&#39;/hello_world.py&#39;</span><span class="o">]</span>
-
-<span class="o">==</span>&gt;<span class="w"> </span>bdvdbcor:<span class="w"> </span>BUILDING<span class="w"> </span>...
-<span class="w">        </span><span class="c1">#!/usr/bin/env bash</span>
-<span class="w">        </span>podman<span class="w"> </span>build<span class="w"> </span>-f<span class="w"> </span>/tmp/velocity/build/bdvdbcor/script<span class="w"> </span>-t<span class="w"> </span>localhost/hello-world__1.0__x86_64__fedora:latest<span class="w"> </span>.<span class="p">;</span>
-<span class="w">        </span>STEP<span class="w"> </span><span class="m">1</span>/4:<span class="w"> </span>FROM<span class="w"> </span>localhost/wmrxxohy:latest
-<span class="w">        </span>STEP<span class="w"> </span><span class="m">2</span>/4:<span class="w"> </span>COPY<span class="w"> </span>hello_world.py<span class="w"> </span>/hello_world.py
-<span class="w">        </span>--&gt;<span class="w"> </span>fa1896e8689
-<span class="w">        </span>STEP<span class="w"> </span><span class="m">3</span>/4:<span class="w"> </span>LABEL<span class="w"> </span>velocity.image.hello-world__1.0<span class="o">=</span><span class="s2">&quot;1b080f458c34ae2759d1eb3e8464d3d508e3bcb981a476f70709b0f20b6218bb&quot;</span>
-<span class="w">        </span>--&gt;<span class="w"> </span>d58637575df
-<span class="w">        </span>STEP<span class="w"> </span><span class="m">4</span>/4:<span class="w"> </span>ENTRYPOINT<span class="w"> </span><span class="o">[</span><span class="s1">&#39;/hello_world.py&#39;</span><span class="o">]</span>
-<span class="w">        </span>COMMIT<span class="w"> </span>localhost/hello-world__1.0__x86_64__fedora:latest
-<span class="w">        </span>--&gt;<span class="w"> </span>21211d9de40
-<span class="w">        </span>Successfully<span class="w"> </span>tagged<span class="w"> </span>localhost/hello-world__1.0__x86_64__fedora:latest
-<span class="w">        </span><span class="nv">21211d9de40aa6c0cb6b625e6f4fed265c88f9a4be09c4edcd93a78360580ecf</span>
-<span class="o">==</span>&gt;<span class="w"> </span>bdvdbcor:<span class="w"> </span>IMAGE<span class="w"> </span>localhost/hello-world__1.0__x86_64__fedora:latest<span class="w"> </span><span class="o">(</span>hello-world@<span class="o">=</span><span class="m">1</span>.0<span class="o">)</span><span class="w"> </span>BUILT<span class="w"> </span><span class="o">[</span><span class="m">0</span>:00:03<span class="o">]</span>
+<span class="w">    </span>fedora@41-8a9a360
+<span class="w">    </span>hello-world@1.0-de9c02b
+
+<span class="o">==</span>&gt;<span class="w"> </span>8a9a360:<span class="w"> </span>BUILD<span class="w"> </span>fedora@41<span class="w"> </span>...
+<span class="o">==</span>&gt;<span class="w"> </span>8a9a360:<span class="w"> </span>GENERATING<span class="w"> </span>SCRIPT<span class="w"> </span>...
+<span class="w">    </span>SCRIPT:<span class="w"> </span>/tmp/velocity/build/fedora-41-8a9a360/script
+<span class="w">    </span>Bootstrap:<span class="w"> </span>docker
+<span class="w">    </span>From:<span class="w"> </span>docker.io/fedora:41
+
+<span class="w">    </span>%post
+<span class="w">    </span>dnf<span class="w"> </span>-y<span class="w"> </span>upgrade
+<span class="w">    </span>dnf<span class="w"> </span>clean<span class="w"> </span><span class="nv">all</span>
+<span class="o">==</span>&gt;<span class="w"> </span>8a9a360:<span class="w"> </span>BUILDING<span class="w"> </span>...
+<span class="w">    </span><span class="c1">#!/usr/bin/env bash</span>
+<span class="w">    </span>apptainer<span class="w"> </span>build<span class="w"> </span>--disable-cache<span class="w"> </span>/tmp/velocity/build/fedora-41-8a9a360/8a9a360.sif<span class="w"> </span>/tmp/velocity/build/fedora-41-8a9a360/script<span class="p">;</span>
+<span class="w">    </span>Updating<span class="w"> </span>and<span class="w"> </span>loading<span class="w"> </span>repositories:
+<span class="w">     </span>Fedora<span class="w"> </span><span class="m">41</span><span class="w"> </span>openh264<span class="w"> </span><span class="o">(</span>From<span class="w"> </span>Cisco<span class="o">)</span><span class="w"> </span>-<span class="w"> </span>x86_<span class="w"> </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w">   </span><span class="m">6</span>.5<span class="w"> </span>KiB/s<span class="w"> </span><span class="p">|</span><span class="w">   </span><span class="m">4</span>.8<span class="w"> </span>KiB<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m01s
+<span class="w">     </span>Fedora<span class="w"> </span><span class="m">41</span><span class="w"> </span>-<span class="w"> </span>x86_64<span class="w"> </span>-<span class="w"> </span>Test<span class="w"> </span>Updates<span class="w">      </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w">   </span><span class="m">1</span>.8<span class="w"> </span>MiB/s<span class="w"> </span><span class="p">|</span><span class="w">   </span><span class="m">3</span>.4<span class="w"> </span>MiB<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m02s
+<span class="w">     </span>Fedora<span class="w"> </span><span class="m">41</span><span class="w"> </span>-<span class="w"> </span>x86_64<span class="w">                     </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">13</span>.9<span class="w"> </span>MiB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">35</span>.9<span class="w"> </span>MiB<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m03s
+<span class="w">     </span>Fedora<span class="w"> </span><span class="m">41</span><span class="w"> </span>-<span class="w"> </span>x86_64<span class="w"> </span>-<span class="w"> </span>Updates<span class="w">           </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">50</span>.3<span class="w"> </span>KiB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">31</span>.9<span class="w"> </span>KiB<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m01s
+<span class="w">    </span>Repositories<span class="w"> </span>loaded.
+<span class="w">    </span>Package<span class="w">                     </span>Arch<span class="w">   </span>Version<span class="w">        </span>Repository<span class="w">                            </span>Size
+<span class="w">    </span>Upgrading:
+<span class="w">     </span>libgcc<span class="w">                     </span>x86_64<span class="w"> </span><span class="m">14</span>.2.1-3.fc41<span class="w">  </span>updates-testing<span class="w">                  </span><span class="m">274</span>.6<span class="w"> </span>KiB
+<span class="w">       </span>replacing<span class="w"> </span>libgcc<span class="w">         </span>x86_64<span class="w"> </span><span class="m">14</span>.2.1-1.fc41<span class="w">  </span>34086d2996104518800c8d7dcc6139a1<span class="w"> </span><span class="m">274</span>.6<span class="w"> </span>KiB
+<span class="w">     </span>libgomp<span class="w">                    </span>x86_64<span class="w"> </span><span class="m">14</span>.2.1-3.fc41<span class="w">  </span>updates-testing<span class="w">                  </span><span class="m">523</span>.5<span class="w"> </span>KiB
+<span class="w">       </span>replacing<span class="w"> </span>libgomp<span class="w">        </span>x86_64<span class="w"> </span><span class="m">14</span>.2.1-1.fc41<span class="w">  </span>34086d2996104518800c8d7dcc6139a1<span class="w"> </span><span class="m">523</span>.4<span class="w"> </span>KiB
+<span class="w">     </span>libstdc++<span class="w">                  </span>x86_64<span class="w"> </span><span class="m">14</span>.2.1-3.fc41<span class="w">  </span>updates-testing<span class="w">                    </span><span class="m">2</span>.8<span class="w"> </span>MiB
+<span class="w">       </span>replacing<span class="w"> </span>libstdc++<span class="w">      </span>x86_64<span class="w"> </span><span class="m">14</span>.2.1-1.fc41<span class="w">  </span>34086d2996104518800c8d7dcc6139a1<span class="w">   </span><span class="m">2</span>.8<span class="w"> </span>MiB
+<span class="w">     </span>openssl-libs<span class="w">               </span>x86_64<span class="w"> </span><span class="m">1</span>:3.2.2-7.fc41<span class="w"> </span>updates-testing<span class="w">                    </span><span class="m">7</span>.8<span class="w"> </span>MiB
+<span class="w">       </span>replacing<span class="w"> </span>openssl-libs<span class="w">   </span>x86_64<span class="w"> </span><span class="m">1</span>:3.2.2-5.fc41<span class="w"> </span>34086d2996104518800c8d7dcc6139a1<span class="w">   </span><span class="m">7</span>.8<span class="w"> </span>MiB
+<span class="w">     </span>rpm<span class="w">                        </span>x86_64<span class="w"> </span><span class="m">4</span>.19.94-1.fc41<span class="w"> </span>updates-testing<span class="w">                    </span><span class="m">3</span>.1<span class="w"> </span>MiB
+<span class="w">       </span>replacing<span class="w"> </span>rpm<span class="w">            </span>x86_64<span class="w"> </span><span class="m">4</span>.19.92-6.fc41<span class="w"> </span>34086d2996104518800c8d7dcc6139a1<span class="w">   </span><span class="m">3</span>.1<span class="w"> </span>MiB
+<span class="w">     </span>rpm-build-libs<span class="w">             </span>x86_64<span class="w"> </span><span class="m">4</span>.19.94-1.fc41<span class="w"> </span>updates-testing<span class="w">                  </span><span class="m">206</span>.7<span class="w"> </span>KiB
+<span class="w">       </span>replacing<span class="w"> </span>rpm-build-libs<span class="w"> </span>x86_64<span class="w"> </span><span class="m">4</span>.19.92-6.fc41<span class="w"> </span>34086d2996104518800c8d7dcc6139a1<span class="w"> </span><span class="m">206</span>.7<span class="w"> </span>KiB
+<span class="w">     </span>rpm-libs<span class="w">                   </span>x86_64<span class="w"> </span><span class="m">4</span>.19.94-1.fc41<span class="w"> </span>updates-testing<span class="w">                  </span><span class="m">721</span>.9<span class="w"> </span>KiB
+<span class="w">       </span>replacing<span class="w"> </span>rpm-libs<span class="w">       </span>x86_64<span class="w"> </span><span class="m">4</span>.19.92-6.fc41<span class="w"> </span>34086d2996104518800c8d7dcc6139a1<span class="w"> </span><span class="m">721</span>.9<span class="w"> </span>KiB
+<span class="w">     </span>systemd-libs<span class="w">               </span>x86_64<span class="w"> </span><span class="m">256</span>.6-1.fc41<span class="w">   </span>updates-testing<span class="w">                    </span><span class="m">2</span>.0<span class="w"> </span>MiB
+<span class="w">       </span>replacing<span class="w"> </span>systemd-libs<span class="w">   </span>x86_64<span class="w"> </span><span class="m">256</span>.5-1.fc41<span class="w">   </span>34086d2996104518800c8d7dcc6139a1<span class="w">   </span><span class="m">2</span>.0<span class="w"> </span>MiB
+<span class="w">     </span>zlib-ng-compat<span class="w">             </span>x86_64<span class="w"> </span><span class="m">2</span>.1.7-3.fc41<span class="w">   </span>updates-testing<span class="w">                  </span><span class="m">134</span>.0<span class="w"> </span>KiB
+<span class="w">       </span>replacing<span class="w"> </span>zlib-ng-compat<span class="w"> </span>x86_64<span class="w"> </span><span class="m">2</span>.1.7-2.fc41<span class="w">   </span>34086d2996104518800c8d7dcc6139a1<span class="w"> </span><span class="m">134</span>.0<span class="w"> </span>KiB
+
+<span class="w">    </span>Transaction<span class="w"> </span>Summary:
+<span class="w">     </span>Upgrading:<span class="w">         </span><span class="m">9</span><span class="w"> </span>packages
+<span class="w">     </span>Replacing:<span class="w">         </span><span class="m">9</span><span class="w"> </span>packages
+
+<span class="w">    </span>Total<span class="w"> </span>size<span class="w"> </span>of<span class="w"> </span>inbound<span class="w"> </span>packages<span class="w"> </span>is<span class="w"> </span><span class="m">5</span><span class="w"> </span>MiB.<span class="w"> </span>Need<span class="w"> </span>to<span class="w"> </span>download<span class="w"> </span><span class="m">5</span><span class="w"> </span>MiB.
+<span class="w">    </span>After<span class="w"> </span>this<span class="w"> </span>operation<span class="w"> </span><span class="m">2</span><span class="w"> </span>KiB<span class="w"> </span>will<span class="w"> </span>be<span class="w"> </span>used<span class="w"> </span><span class="o">(</span>install<span class="w"> </span><span class="m">17</span><span class="w"> </span>MiB,<span class="w"> </span>remove<span class="w"> </span><span class="m">17</span><span class="w"> </span>MiB<span class="o">)</span>.
+<span class="w">    </span><span class="o">[</span><span class="m">1</span>/9<span class="o">]</span><span class="w"> </span>libgcc-0:14.2.1-3.fc41.x86_64<span class="w">     </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">132</span>.2<span class="w"> </span>KiB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">133</span>.3<span class="w"> </span>KiB<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m01s
+<span class="w">    </span><span class="o">[</span><span class="m">2</span>/9<span class="o">]</span><span class="w"> </span>libstdc++-0:14.2.1-3.fc41.x86_64<span class="w">  </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">583</span>.3<span class="w"> </span>KiB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">887</span>.8<span class="w"> </span>KiB<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m02s
+<span class="w">    </span><span class="o">[</span><span class="m">3</span>/9<span class="o">]</span><span class="w"> </span>libgomp-0:14.2.1-3.fc41.x86_64<span class="w">    </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">208</span>.5<span class="w"> </span>KiB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">354</span>.1<span class="w"> </span>KiB<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m02s
+<span class="w">    </span><span class="o">[</span><span class="m">4</span>/9<span class="o">]</span><span class="w"> </span>rpm-0:4.19.94-1.fc41.x86_64<span class="w">       </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w">   </span><span class="m">1</span>.6<span class="w"> </span>MiB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">547</span>.6<span class="w"> </span>KiB<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m00s
+<span class="w">    </span><span class="o">[</span><span class="m">5</span>/9<span class="o">]</span><span class="w"> </span>rpm-build-libs-0:4.19.94-1.fc41.x<span class="w"> </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w">   </span><span class="m">2</span>.1<span class="w"> </span>MiB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">99</span>.1<span class="w"> </span>KiB<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m00s
+<span class="w">    </span><span class="o">[</span><span class="m">6</span>/9<span class="o">]</span><span class="w"> </span>openssl-libs-1:3.2.2-7.fc41.x86_6<span class="w"> </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w">   </span><span class="m">2</span>.6<span class="w"> </span>MiB/s<span class="w"> </span><span class="p">|</span><span class="w">   </span><span class="m">2</span>.3<span class="w"> </span>MiB<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m01s
+<span class="w">    </span><span class="o">[</span><span class="m">7</span>/9<span class="o">]</span><span class="w"> </span>rpm-libs-0:4.19.94-1.fc41.x86_64<span class="w">  </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w">   </span><span class="m">1</span>.1<span class="w"> </span>MiB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">309</span>.5<span class="w"> </span>KiB<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m00s
+<span class="w">    </span><span class="o">[</span><span class="m">8</span>/9<span class="o">]</span><span class="w"> </span>zlib-ng-compat-0:2.1.7-3.fc41.x86<span class="w"> </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w">   </span><span class="m">1</span>.0<span class="w"> </span>MiB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">77</span>.7<span class="w"> </span>KiB<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m00s
+<span class="w">    </span><span class="o">[</span><span class="m">9</span>/9<span class="o">]</span><span class="w"> </span>systemd-libs-0:256.6-1.fc41.x86_6<span class="w"> </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w">   </span><span class="m">2</span>.6<span class="w"> </span>MiB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">730</span>.9<span class="w"> </span>KiB<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m00s
+<span class="w">    </span>--------------------------------------------------------------------------------
+<span class="w">    </span><span class="o">[</span><span class="m">9</span>/9<span class="o">]</span><span class="w"> </span>Total<span class="w">                             </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w">   </span><span class="m">2</span>.2<span class="w"> </span>MiB/s<span class="w"> </span><span class="p">|</span><span class="w">   </span><span class="m">5</span>.4<span class="w"> </span>MiB<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m02s
+<span class="w">    </span>Running<span class="w"> </span>transaction
+<span class="w">    </span><span class="o">[</span><span class="w"> </span><span class="m">1</span>/20<span class="o">]</span><span class="w"> </span>Verify<span class="w"> </span>package<span class="w"> </span>files<span class="w">            </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">750</span>.0<span class="w">   </span>B/s<span class="w"> </span><span class="p">|</span><span class="w">   </span><span class="m">9</span>.0<span class="w">   </span>B<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m00s
+<span class="w">    </span><span class="o">[</span><span class="w"> </span><span class="m">2</span>/20<span class="o">]</span><span class="w"> </span>Prepare<span class="w"> </span>transaction<span class="w">             </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w">   </span><span class="m">1</span>.6<span class="w"> </span>KiB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">18</span>.0<span class="w">   </span>B<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m00s
+<span class="w">    </span><span class="o">[</span><span class="w"> </span><span class="m">3</span>/20<span class="o">]</span><span class="w"> </span>Upgrading<span class="w"> </span>libgcc-0:14.2.1-3.fc4<span class="w"> </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">14</span>.2<span class="w"> </span>MiB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">276</span>.3<span class="w"> </span>KiB<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m00s
+<span class="w">    </span>&gt;&gt;&gt;<span class="w"> </span>Running<span class="w"> </span>post-install<span class="w"> </span>scriptlet:<span class="w"> </span>libgcc-0:14.2.1-3.fc41.x86_64
+<span class="w">    </span>&gt;&gt;&gt;<span class="w"> </span>Stop<span class="w"> </span>post-install<span class="w"> </span>scriptlet:<span class="w"> </span>libgcc-0:14.2.1-3.fc41.x86_64
+<span class="w">    </span><span class="o">[</span><span class="w"> </span><span class="m">4</span>/20<span class="o">]</span><span class="w"> </span>Upgrading<span class="w"> </span>zlib-ng-compat-0:2.1.<span class="w"> </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">32</span>.9<span class="w"> </span>MiB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">134</span>.8<span class="w"> </span>KiB<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m00s
+<span class="w">    </span><span class="o">[</span><span class="w"> </span><span class="m">5</span>/20<span class="o">]</span><span class="w"> </span>Upgrading<span class="w"> </span>rpm-libs-0:4.19.94-1.<span class="w"> </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">117</span>.7<span class="w"> </span>MiB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">723</span>.4<span class="w"> </span>KiB<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m00s
+<span class="w">    </span><span class="o">[</span><span class="w"> </span><span class="m">6</span>/20<span class="o">]</span><span class="w"> </span>Upgrading<span class="w"> </span>libgomp-0:14.2.1-3.fc<span class="w"> </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">170</span>.8<span class="w"> </span>MiB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">524</span>.8<span class="w"> </span>KiB<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m00s
+<span class="w">    </span><span class="o">[</span><span class="w"> </span><span class="m">7</span>/20<span class="o">]</span><span class="w"> </span>Upgrading<span class="w"> </span>rpm-build-libs-0:4.19<span class="w"> </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">15</span>.6<span class="w"> </span>MiB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">207</span>.5<span class="w"> </span>KiB<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m00s
+<span class="w">    </span>&gt;&gt;&gt;<span class="w"> </span>Running<span class="w"> </span>pre-install<span class="w"> </span>scriptlet:<span class="w"> </span>rpm-0:4.19.94-1.fc41.x86_64
+<span class="w">    </span>&gt;&gt;&gt;<span class="w"> </span>Stop<span class="w"> </span>pre-install<span class="w"> </span>scriptlet:<span class="w"> </span>rpm-0:4.19.94-1.fc41.x86_64
+<span class="w">    </span><span class="o">[</span><span class="w"> </span><span class="m">8</span>/20<span class="o">]</span><span class="w"> </span>Upgrading<span class="w"> </span>rpm-0:4.19.94-1.fc41.<span class="w"> </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">104</span>.3<span class="w"> </span>MiB/s<span class="w"> </span><span class="p">|</span><span class="w">   </span><span class="m">2</span>.5<span class="w"> </span>MiB<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m00s
+<span class="w">    </span><span class="o">[</span><span class="w"> </span><span class="m">9</span>/20<span class="o">]</span><span class="w"> </span>Upgrading<span class="w"> </span>openssl-libs-1:3.2.2-<span class="w"> </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">190</span>.9<span class="w"> </span>MiB/s<span class="w"> </span><span class="p">|</span><span class="w">   </span><span class="m">7</span>.8<span class="w"> </span>MiB<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m00s
+<span class="w">    </span><span class="o">[</span><span class="m">10</span>/20<span class="o">]</span><span class="w"> </span>Upgrading<span class="w"> </span>libstdc++-0:14.2.1-3.<span class="w"> </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">145</span>.6<span class="w"> </span>MiB/s<span class="w"> </span><span class="p">|</span><span class="w">   </span><span class="m">2</span>.8<span class="w"> </span>MiB<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m00s
+<span class="w">    </span><span class="o">[</span><span class="m">11</span>/20<span class="o">]</span><span class="w"> </span>Upgrading<span class="w"> </span>systemd-libs-0:256.6-<span class="w"> </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">135</span>.3<span class="w"> </span>MiB/s<span class="w"> </span><span class="p">|</span><span class="w">   </span><span class="m">2</span>.0<span class="w"> </span>MiB<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m00s
+<span class="w">    </span><span class="o">[</span><span class="m">12</span>/20<span class="o">]</span><span class="w"> </span>Erasing<span class="w"> </span>rpm-build-libs-0:4.19.9<span class="w"> </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w">   </span><span class="m">1</span>.0<span class="w"> </span>KiB/s<span class="w"> </span><span class="p">|</span><span class="w">   </span><span class="m">5</span>.0<span class="w">   </span>B<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m00s
+<span class="w">    </span><span class="o">[</span><span class="m">13</span>/20<span class="o">]</span><span class="w"> </span>Erasing<span class="w"> </span>libstdc++-0:14.2.1-1.fc<span class="w"> </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w">   </span><span class="m">6</span>.1<span class="w"> </span>KiB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">31</span>.0<span class="w">   </span>B<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m00s
+<span class="w">    </span><span class="o">[</span><span class="m">14</span>/20<span class="o">]</span><span class="w"> </span>Erasing<span class="w"> </span>systemd-libs-0:256.5-1.<span class="w"> </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w">   </span><span class="m">2</span>.4<span class="w"> </span>KiB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">20</span>.0<span class="w">   </span>B<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m00s
+<span class="w">    </span><span class="o">[</span><span class="m">15</span>/20<span class="o">]</span><span class="w"> </span>Erasing<span class="w"> </span>rpm-0:4.19.92-6.fc41.x8<span class="w"> </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">26</span>.7<span class="w"> </span>KiB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">273</span>.0<span class="w">   </span>B<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m00s
+<span class="w">    </span><span class="o">[</span><span class="m">16</span>/20<span class="o">]</span><span class="w"> </span>Erasing<span class="w"> </span>rpm-libs-0:4.19.92-6.fc<span class="w"> </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w">   </span><span class="m">2</span>.4<span class="w"> </span>KiB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">10</span>.0<span class="w">   </span>B<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m00s
+<span class="w">    </span><span class="o">[</span><span class="m">17</span>/20<span class="o">]</span><span class="w"> </span>Erasing<span class="w"> </span>openssl-libs-1:3.2.2-5.<span class="w"> </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w">   </span><span class="m">9</span>.5<span class="w"> </span>KiB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">39</span>.0<span class="w">   </span>B<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m00s
+<span class="w">    </span><span class="o">[</span><span class="m">18</span>/20<span class="o">]</span><span class="w"> </span>Erasing<span class="w"> </span>zlib-ng-compat-0:2.1.7-<span class="w"> </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w">   </span><span class="m">1</span>.2<span class="w"> </span>KiB/s<span class="w"> </span><span class="p">|</span><span class="w">   </span><span class="m">5</span>.0<span class="w">   </span>B<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m00s
+<span class="w">    </span><span class="o">[</span><span class="m">19</span>/20<span class="o">]</span><span class="w"> </span>Erasing<span class="w"> </span>libgcc-0:14.2.1-1.fc41.<span class="w"> </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">647</span>.0<span class="w">   </span>B/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">11</span>.0<span class="w">   </span>B<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m00s
+<span class="w">    </span>&gt;&gt;&gt;<span class="w"> </span>Running<span class="w"> </span>post-uninstall<span class="w"> </span>scriptlet:<span class="w"> </span>libgcc-0:14.2.1-1.fc41.x86_64
+<span class="w">    </span>&gt;&gt;&gt;<span class="w"> </span>Stop<span class="w"> </span>post-uninstall<span class="w"> </span>scriptlet:<span class="w"> </span>libgcc-0:14.2.1-1.fc41.x86_64
+<span class="w">    </span><span class="o">[</span><span class="m">20</span>/20<span class="o">]</span><span class="w"> </span>Erasing<span class="w"> </span>libgomp-0:14.2.1-1.fc41<span class="w"> </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">43</span>.0<span class="w">   </span>B/s<span class="w"> </span><span class="p">|</span><span class="w">   </span><span class="m">9</span>.0<span class="w">   </span>B<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m00s
+<span class="w">    </span>&gt;&gt;&gt;<span class="w"> </span>Running<span class="w"> </span>post-transaction<span class="w"> </span>scriptlet:<span class="w"> </span>rpm-0:4.19.94-1.fc41.x86_64
+<span class="w">    </span>&gt;&gt;&gt;<span class="w"> </span>Stop<span class="w"> </span>post-transaction<span class="w"> </span>scriptlet:<span class="w"> </span>rpm-0:4.19.94-1.fc41.x86_64
+<span class="w">    </span>&gt;&gt;&gt;<span class="w"> </span>Running<span class="w"> </span>trigger-install<span class="w"> </span>scriptlet:<span class="w"> </span>glibc-common-0:2.40-3.fc41.x86_64
+<span class="w">    </span>&gt;&gt;&gt;<span class="w"> </span>Stop<span class="w"> </span>trigger-install<span class="w"> </span>scriptlet:<span class="w"> </span>glibc-common-0:2.40-3.fc41.x86_64
+<span class="w">    </span>&gt;&gt;&gt;<span class="w"> </span>Running<span class="w"> </span>trigger-post-uninstall<span class="w"> </span>scriptlet:<span class="w"> </span>glibc-common-0:2.40-3.fc41.x86_64
+<span class="w">    </span>&gt;&gt;&gt;<span class="w"> </span>Stop<span class="w"> </span>trigger-post-uninstall<span class="w"> </span>scriptlet:<span class="w"> </span>glibc-common-0:2.40-3.fc41.x86_64
+<span class="w">    </span>Complete!
+<span class="w">    </span>Removed<span class="w"> </span><span class="m">24</span><span class="w"> </span>files,<span class="w"> </span><span class="m">13</span><span class="w"> </span>directories.<span class="w"> </span><span class="m">0</span><span class="w"> </span>errors<span class="w"> </span>occurred.
+<span class="o">==</span>&gt;<span class="w"> </span>8a9a360:<span class="w"> </span>IMAGE<span class="w"> </span>/tmp/velocity/build/fedora-41-8a9a360/8a9a360.sif<span class="w"> </span><span class="o">(</span>fedora@41<span class="o">)</span><span class="w"> </span>BUILT<span class="w"> </span><span class="o">[</span><span class="m">0</span>:00:21<span class="o">]</span>
+
+<span class="o">==</span>&gt;<span class="w"> </span>de9c02b:<span class="w"> </span>BUILD<span class="w"> </span>hello-world@1.0<span class="w"> </span>...
+<span class="o">==</span>&gt;<span class="w"> </span>de9c02b:<span class="w"> </span>COPYING<span class="w"> </span>FILES<span class="w"> </span>...
+<span class="w">    </span>FILE:<span class="w"> </span>/tmp/velocity/images/hello-world/files/hello_world.py<span class="w"> </span>-&gt;<span class="w"> </span>/tmp/velocity/build/hello-world-1.0-de9c02b/hello_world.py
+<span class="o">==</span>&gt;<span class="w"> </span>de9c02b:<span class="w"> </span>GENERATING<span class="w"> </span>SCRIPT<span class="w"> </span>...
+<span class="w">    </span>SCRIPT:<span class="w"> </span>/tmp/velocity/build/hello-world-1.0-de9c02b/script
+<span class="w">    </span>Bootstrap:<span class="w"> </span>localimage
+<span class="w">    </span>From:<span class="w"> </span>/tmp/velocity/build/fedora-41-8a9a360/8a9a360.sif
+
+<span class="w">    </span>%files
+<span class="w">    </span>hello_world.py<span class="w"> </span>/hello_world
+
+<span class="w">    </span>%post
+<span class="w">    </span>dnf<span class="w"> </span>-y<span class="w"> </span>install<span class="w"> </span>python3
+<span class="w">    </span>chmod<span class="w"> </span>+x<span class="w"> </span>/hello_world
+
+<span class="w">    </span>%runscript
+<span class="w">    </span>/hello_world
+<span class="o">==</span>&gt;<span class="w"> </span>de9c02b:<span class="w"> </span>BUILDING<span class="w"> </span>...
+<span class="w">    </span><span class="c1">#!/usr/bin/env bash</span>
+<span class="w">    </span>apptainer<span class="w"> </span>build<span class="w"> </span>--disable-cache<span class="w"> </span>/tmp/velocity/build/hello-world-1.0-de9c02b/de9c02b.sif<span class="w"> </span>/tmp/velocity/build/hello-world-1.0-de9c02b/script<span class="p">;</span>
+<span class="w">    </span>Updating<span class="w"> </span>and<span class="w"> </span>loading<span class="w"> </span>repositories:
+<span class="w">     </span>Fedora<span class="w"> </span><span class="m">41</span><span class="w"> </span>openh264<span class="w"> </span><span class="o">(</span>From<span class="w"> </span>Cisco<span class="o">)</span><span class="w"> </span>-<span class="w"> </span>x86_<span class="w"> </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">11</span>.1<span class="w"> </span>KiB/s<span class="w"> </span><span class="p">|</span><span class="w">   </span><span class="m">6</span>.0<span class="w"> </span>KiB<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m01s
+<span class="w">     </span>Fedora<span class="w"> </span><span class="m">41</span><span class="w"> </span>-<span class="w"> </span>x86_64<span class="w">                     </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">11</span>.7<span class="w"> </span>MiB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">35</span>.4<span class="w"> </span>MiB<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m03s
+<span class="w">     </span>Fedora<span class="w"> </span><span class="m">41</span><span class="w"> </span>-<span class="w"> </span>x86_64<span class="w"> </span>-<span class="w"> </span>Updates<span class="w">           </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">50</span>.1<span class="w"> </span>KiB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">31</span>.9<span class="w"> </span>KiB<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m01s
+<span class="w">     </span>Fedora<span class="w"> </span><span class="m">41</span><span class="w"> </span>-<span class="w"> </span>x86_64<span class="w"> </span>-<span class="w"> </span>Test<span class="w"> </span>Updates<span class="w">      </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w">   </span><span class="m">1</span>.8<span class="w"> </span>MiB/s<span class="w"> </span><span class="p">|</span><span class="w">   </span><span class="m">2</span>.1<span class="w"> </span>MiB<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m01s
+<span class="w">    </span>Repositories<span class="w"> </span>loaded.
+<span class="w">    </span>Package<span class="w">                     </span>Arch<span class="w">   </span>Version<span class="w">           </span>Repository<span class="w">           </span>Size
+<span class="w">    </span>Installing:
+<span class="w">     </span>python3<span class="w">                    </span>x86_64<span class="w"> </span><span class="m">3</span>.13.0~rc2-1.fc41<span class="w"> </span>fedora<span class="w">           </span><span class="m">31</span>.8<span class="w"> </span>KiB
+<span class="w">    </span>Installing<span class="w"> </span>dependencies:
+<span class="w">     </span>expat<span class="w">                      </span>x86_64<span class="w"> </span><span class="m">2</span>.6.3-1.fc41<span class="w">      </span>updates-testing<span class="w"> </span><span class="m">291</span>.5<span class="w"> </span>KiB
+<span class="w">     </span>libb2<span class="w">                      </span>x86_64<span class="w"> </span><span class="m">0</span>.98.1-12.fc41<span class="w">    </span>fedora<span class="w">           </span><span class="m">42</span>.2<span class="w"> </span>KiB
+<span class="w">     </span>mpdecimal<span class="w">                  </span>x86_64<span class="w"> </span><span class="m">2</span>.5.1-16.fc41<span class="w">     </span>fedora<span class="w">          </span><span class="m">204</span>.9<span class="w"> </span>KiB
+<span class="w">     </span>python-pip-wheel<span class="w">           </span>noarch<span class="w"> </span><span class="m">24</span>.2-1.fc41<span class="w">       </span>fedora<span class="w">            </span><span class="m">1</span>.2<span class="w"> </span>MiB
+<span class="w">     </span>python3-libs<span class="w">               </span>x86_64<span class="w"> </span><span class="m">3</span>.13.0~rc2-1.fc41<span class="w"> </span>fedora<span class="w">           </span><span class="m">40</span>.3<span class="w"> </span>MiB
+<span class="w">    </span>Installing<span class="w"> </span>weak<span class="w"> </span>dependencies:
+<span class="w">     </span>python-unversioned-command<span class="w"> </span>noarch<span class="w"> </span><span class="m">3</span>.13.0~rc2-1.fc41<span class="w"> </span>fedora<span class="w">           </span><span class="m">23</span>.0<span class="w">   </span>B
+
+<span class="w">    </span>Transaction<span class="w"> </span>Summary:
+<span class="w">     </span>Installing:<span class="w">        </span><span class="m">7</span><span class="w"> </span>packages
+
+<span class="w">    </span>Total<span class="w"> </span>size<span class="w"> </span>of<span class="w"> </span>inbound<span class="w"> </span>packages<span class="w"> </span>is<span class="w"> </span><span class="m">11</span><span class="w"> </span>MiB.<span class="w"> </span>Need<span class="w"> </span>to<span class="w"> </span>download<span class="w"> </span><span class="m">11</span><span class="w"> </span>MiB.
+<span class="w">    </span>After<span class="w"> </span>this<span class="w"> </span>operation<span class="w"> </span><span class="m">42</span><span class="w"> </span>MiB<span class="w"> </span>will<span class="w"> </span>be<span class="w"> </span>used<span class="w"> </span><span class="o">(</span>install<span class="w"> </span><span class="m">42</span><span class="w"> </span>MiB,<span class="w"> </span>remove<span class="w"> </span><span class="m">0</span><span class="w"> </span>B<span class="o">)</span>.
+<span class="w">    </span><span class="o">[</span><span class="m">1</span>/7<span class="o">]</span><span class="w"> </span>libb2-0:0.98.1-12.fc41.x86_64<span class="w">     </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">94</span>.1<span class="w"> </span>KiB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">25</span>.7<span class="w"> </span>KiB<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m00s
+<span class="w">    </span><span class="o">[</span><span class="m">2</span>/7<span class="o">]</span><span class="w"> </span>python3-0:3.13.0~rc2-1.fc41.x86_6<span class="w"> </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">95</span>.9<span class="w"> </span>KiB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">27</span>.4<span class="w"> </span>KiB<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m00s
+<span class="w">    </span><span class="o">[</span><span class="m">3</span>/7<span class="o">]</span><span class="w"> </span>mpdecimal-0:2.5.1-16.fc41.x86_64<span class="w">  </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">408</span>.0<span class="w"> </span>KiB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">89</span>.0<span class="w"> </span>KiB<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m00s
+<span class="w">    </span><span class="o">[</span><span class="m">4</span>/7<span class="o">]</span><span class="w"> </span>expat-0:2.6.3-1.fc41.x86_64<span class="w">       </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">447</span>.4<span class="w"> </span>KiB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">114</span>.1<span class="w"> </span>KiB<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m00s
+<span class="w">    </span><span class="o">[</span><span class="m">5</span>/7<span class="o">]</span><span class="w"> </span>python-pip-wheel-0:24.2-1.fc41.no<span class="w"> </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w">   </span><span class="m">2</span>.5<span class="w"> </span>MiB/s<span class="w"> </span><span class="p">|</span><span class="w">   </span><span class="m">1</span>.2<span class="w"> </span>MiB<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m00s
+<span class="w">    </span><span class="o">[</span><span class="m">6</span>/7<span class="o">]</span><span class="w"> </span>python-unversioned-command-0:3.13<span class="w"> </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">125</span>.1<span class="w"> </span>KiB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">10</span>.5<span class="w"> </span>KiB<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m00s
+<span class="w">    </span><span class="o">[</span><span class="m">7</span>/7<span class="o">]</span><span class="w"> </span>python3-libs-0:3.13.0~rc2-1.fc41.<span class="w"> </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w">   </span><span class="m">8</span>.1<span class="w"> </span>MiB/s<span class="w"> </span><span class="p">|</span><span class="w">   </span><span class="m">9</span>.1<span class="w"> </span>MiB<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m01s
+<span class="w">    </span>--------------------------------------------------------------------------------
+<span class="w">    </span><span class="o">[</span><span class="m">7</span>/7<span class="o">]</span><span class="w"> </span>Total<span class="w">                             </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w">   </span><span class="m">6</span>.7<span class="w"> </span>MiB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">10</span>.6<span class="w"> </span>MiB<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m02s
+<span class="w">    </span>Running<span class="w"> </span>transaction
+<span class="w">    </span><span class="o">[</span><span class="m">1</span>/9<span class="o">]</span><span class="w"> </span>Verify<span class="w"> </span>package<span class="w"> </span>files<span class="w">              </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">269</span>.0<span class="w">   </span>B/s<span class="w"> </span><span class="p">|</span><span class="w">   </span><span class="m">7</span>.0<span class="w">   </span>B<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m00s
+<span class="w">    </span><span class="o">[</span><span class="m">2</span>/9<span class="o">]</span><span class="w"> </span>Prepare<span class="w"> </span>transaction<span class="w">               </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">280</span>.0<span class="w">   </span>B/s<span class="w"> </span><span class="p">|</span><span class="w">   </span><span class="m">7</span>.0<span class="w">   </span>B<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m00s
+<span class="w">    </span><span class="o">[</span><span class="m">3</span>/9<span class="o">]</span><span class="w"> </span>Installing<span class="w"> </span>expat-0:2.6.3-1.fc41.x<span class="w"> </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">71</span>.7<span class="w"> </span>MiB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">293</span>.6<span class="w"> </span>KiB<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m00s
+<span class="w">    </span><span class="o">[</span><span class="m">4</span>/9<span class="o">]</span><span class="w"> </span>Installing<span class="w"> </span>python-pip-wheel-0:24.<span class="w"> </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">310</span>.4<span class="w"> </span>MiB/s<span class="w"> </span><span class="p">|</span><span class="w">   </span><span class="m">1</span>.2<span class="w"> </span>MiB<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m00s
+<span class="w">    </span><span class="o">[</span><span class="m">5</span>/9<span class="o">]</span><span class="w"> </span>Installing<span class="w"> </span>mpdecimal-0:2.5.1-16.f<span class="w"> </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">50</span>.3<span class="w"> </span>MiB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">206</span>.0<span class="w"> </span>KiB<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m00s
+<span class="w">    </span><span class="o">[</span><span class="m">6</span>/9<span class="o">]</span><span class="w"> </span>Installing<span class="w"> </span>libb2-0:0.98.1-12.fc41<span class="w"> </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w">   </span><span class="m">4</span>.7<span class="w"> </span>MiB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">43</span>.3<span class="w"> </span>KiB<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m00s
+<span class="w">    </span><span class="o">[</span><span class="m">7</span>/9<span class="o">]</span><span class="w"> </span>Installing<span class="w"> </span>python3-libs-0:3.13.0~<span class="w"> </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">139</span>.9<span class="w"> </span>MiB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">40</span>.7<span class="w"> </span>MiB<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m00s
+<span class="w">    </span><span class="o">[</span><span class="m">8</span>/9<span class="o">]</span><span class="w"> </span>Installing<span class="w"> </span>python3-0:3.13.0~rc2-1<span class="w"> </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">10</span>.9<span class="w"> </span>MiB/s<span class="w"> </span><span class="p">|</span><span class="w">  </span><span class="m">33</span>.6<span class="w"> </span>KiB<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m00s
+<span class="w">    </span><span class="o">[</span><span class="m">9</span>/9<span class="o">]</span><span class="w"> </span>Installing<span class="w"> </span>python-unversioned-com<span class="w"> </span><span class="m">100</span>%<span class="w"> </span><span class="p">|</span><span class="w">   </span><span class="m">1</span>.8<span class="w"> </span>KiB/s<span class="w"> </span><span class="p">|</span><span class="w"> </span><span class="m">424</span>.0<span class="w">   </span>B<span class="w"> </span><span class="p">|</span><span class="w">  </span>00m00s
+<span class="w">    </span>&gt;&gt;&gt;<span class="w"> </span>Running<span class="w"> </span>trigger-install<span class="w"> </span>scriptlet:<span class="w"> </span>glibc-common-0:2.40-3.fc41.x86_64
+<span class="w">    </span>&gt;&gt;&gt;<span class="w"> </span>Stop<span class="w"> </span>trigger-install<span class="w"> </span>scriptlet:<span class="w"> </span>glibc-common-0:2.40-3.fc41.x86_64
+<span class="w">    </span>Complete!
+<span class="o">==</span>&gt;<span class="w"> </span>de9c02b:<span class="w"> </span>IMAGE<span class="w"> </span>/tmp/velocity/build/hello-world-1.0-de9c02b/de9c02b.sif<span class="w"> </span><span class="o">(</span>hello-world@1.0<span class="o">)</span><span class="w"> </span>BUILT<span class="w"> </span><span class="o">[</span><span class="m">0</span>:00:14<span class="o">]</span>
+
+<span class="o">==</span>&gt;<span class="w"> </span>BUILT:<span class="w"> </span>/tmp/velocity/hello-world-1.0_fedora-41__x86_64-fedora.sif
 </pre></div>
 </div>
 <p>Our hello-world image has been built!</p>
-<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>user@hostname:~$<span class="w"> </span>podman<span class="w"> </span>image<span class="w"> </span>ls
-REPOSITORY<span class="w">                                 </span>TAG<span class="w">         </span>IMAGE<span class="w"> </span>ID<span class="w">      </span>CREATED<span class="w">        </span>SIZE
-<span class="hll">localhost/hello-world__1.0__x86_64__fedora<span class="w"> </span>latest<span class="w">      </span>db958bad4f40<span class="w">  </span><span class="m">4</span><span class="w"> </span>minutes<span class="w"> </span>ago<span class="w">  </span><span class="m">337</span><span class="w"> </span>MB
-</span>docker.io/library/fedora<span class="w">                   </span><span class="m">41</span><span class="w">          </span>54d1373b70a2<span class="w">  </span><span class="m">5</span><span class="w"> </span>weeks<span class="w"> </span>ago<span class="w">    </span><span class="m">180</span><span class="w"> </span>MB
+<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>user@hostname:~$<span class="w"> </span>ls
+total<span class="w"> </span><span class="m">190972</span>
+drwxr-xr-x<span class="w">  </span><span class="m">4</span><span class="w"> </span>xjv<span class="w">  </span>users<span class="w">      </span><span class="m">4096</span><span class="w"> </span>Sep<span class="w"> </span><span class="m">18</span><span class="w"> </span><span class="m">10</span>:01<span class="w"> </span>.
+drwxrwxrwt<span class="w"> </span><span class="m">31</span><span class="w"> </span>root<span class="w"> </span>root<span class="w">     </span><span class="m">131072</span><span class="w"> </span>Sep<span class="w"> </span><span class="m">18</span><span class="w"> </span><span class="m">10</span>:01<span class="w"> </span>..
+drwxr-xr-x<span class="w">  </span><span class="m">4</span><span class="w"> </span>xjv<span class="w">  </span>users<span class="w">      </span><span class="m">4096</span><span class="w"> </span>Sep<span class="w"> </span><span class="m">18</span><span class="w"> </span><span class="m">10</span>:01<span class="w"> </span>build
+-rwxr-xr-x<span class="w">  </span><span class="m">1</span><span class="w"> </span>xjv<span class="w">  </span>users<span class="w">  </span><span class="m">66007040</span><span class="w"> </span>Sep<span class="w"> </span><span class="m">18</span><span class="w"> </span><span class="m">09</span>:42<span class="w"> </span>fedora-38__x86_64-fedora.sif
+<span class="hll">-rwxr-xr-x<span class="w">  </span><span class="m">1</span><span class="w"> </span>xjv<span class="w">  </span>users<span class="w"> </span><span class="m">129392640</span><span class="w"> </span>Sep<span class="w"> </span><span class="m">18</span><span class="w"> </span><span class="m">10</span>:01<span class="w"> </span>hello-world-1.0_fedora-41__x86_64-fedora.sif
+</span>drwxr-xr-x<span class="w">  </span><span class="m">4</span><span class="w"> </span>xjv<span class="w">  </span>users<span class="w">      </span><span class="m">4096</span><span class="w"> </span>Sep<span class="w"> </span><span class="m">18</span><span class="w"> </span><span class="m">09</span>:44<span class="w"> </span>images
+</pre></div>
+</div>
+<p>Now you can run the image!</p>
+<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>user@hostname:~$<span class="w"> </span>apptainer<span class="w"> </span>run<span class="w"> </span>hello-world-1.0_fedora-41__x86_64-fedora.sif
+Hello,<span class="w"> </span>World!
 </pre></div>
 </div>
 </section>
diff --git a/docs/source/_static/icon.png b/docs/source/_static/icon.png
index 1f964a2..2c31d5a 120000
--- a/docs/source/_static/icon.png
+++ b/docs/source/_static/icon.png
@@ -1 +1 @@
-../../../assets/artwork/icon.drawio.png
\ No newline at end of file
+../../../misc/artwork/icon.drawio.png
\ No newline at end of file
diff --git a/docs/source/index.rst b/docs/source/index.rst
index e81dc9e..fcb521a 100644
--- a/docs/source/index.rst
+++ b/docs/source/index.rst
@@ -4,8 +4,10 @@
    contain the root `toctree` directive.
 
 
-Velocity Container Build System
-===============================
+Velocity Container Build Management
+===================================
+Velocity is a tool to help with the maintenance of container build scripts on multiple systems, backends
+(e.g podman or apptainer) and distros.
 
 .. toctree::
    :maxdepth: 2
diff --git a/docs/source/reference/build.rst b/docs/source/reference/build.rst
index 4d4d7f1..6003d21 100644
--- a/docs/source/reference/build.rst
+++ b/docs/source/reference/build.rst
@@ -6,16 +6,14 @@ This page describes the steps that velocity goes through when building an image.
 
 Setup
 #####
-After selecting images to build and ordering them. Velocity will start by assigning a random
-id to each image to be built. It will also create a directory BSD (Build Sub Dir) named with that random id in
-`VELOCITY_BUILD_DIR`.
+After selecting images to build and ordering them Velocity will also create a directory BSD (Build Sub Dir)
+named ``<name>-<version>-<hash>`` in build directory.
 
 .. _files:
 
 Files
 #####
-Next Velocity will look for a folder in the image definition directory with the same name as `VELOCITY_SYSTEM`. All
-of the files in this directory will be copied to the BSD.
+Next Velocity will copy any files that you specified.
 
 Parse Template
 ##############
@@ -32,18 +30,20 @@ Finally velocity will run the `build` script and log the output to a file called
 
 Build Directory Layout
 ######################
-At the end of a build `VELOCITY_BUILD_DIR` should look somthing like this. With the addition of any other files that
+At the end of a build the build dir should look somthing like this. With the addition of any other files that
 got copied in the :ref:`files<files>` step.
 
 .. code-block:: bash
 
     .
-    ├── jknqsnkc
-    │   ├── build
-    │   ├── log
-    │   └── script
-    └── nfhmhmsh
+    ├── fedora-41-8a9a360
+    │ ├── 8a9a360.sif
+    │ ├── build
+    │ ├── log
+    │ └── script
+    └── hello-world-1.0-de9c02b
         ├── build
+        ├── de9c02b.sif
+        ├── hello_world.py
         ├── log
         └── script
-
diff --git a/docs/source/reference/config.rst b/docs/source/reference/config.rst
new file mode 100644
index 0000000..50a83c3
--- /dev/null
+++ b/docs/source/reference/config.rst
@@ -0,0 +1,64 @@
+*************
+Configuration
+*************
+
+Configuration for Velocity comes from three places. Command line options, environment variables and the configuration file.
+
+Commandline Options
+###################
+These take the highest level of precedence and can be viewed by using the ``--help`` option in the command line.
+
+Variables
+#########
+Variables are the second highest level of configuration.
+
+`VELOCITY_IMAGE_PATH`
+---------------------
+
+This variable points to the directories containing the the image definitions.
+
+`VELOCITY_SYSTEM`
+-----------------
+This variable specifies what computer system you are building for (e.g. frontier).
+
+`VELOCITY_BACKEND`
+------------------
+This variable specifies the container backend that should be used (e.g podman).
+
+`VELOCITY_DISTRO`
+-----------------
+This variable specifies the distro of the container images that will be built. This name is flexable and completely
+up to the user. It is used purely for organizational purposes.
+
+`VELOCITY_BUILD_DIR`
+--------------------
+This variable specifies a scratch space for Velocity to preform builds in.
+
+`VELOCITY_CONFIG_DIR`
+---------------------
+This variable specifies where to look for the configuration file.
+
+Configuration File
+##################
+The configuration file is the lowest level of configuration. By default Velocity looks for ``config.yaml`` in
+``~/.velocity`` unless ``VELOCITY_CONFIG_DIR`` is set. A number of configuration option for velocity can be set.
+
+.. code-block:: yaml
+
+    velocity:
+      system: frontier
+      backend: apptainer
+      distro: ubuntu
+      debug: INFO   # set the debug level
+      image_path:   # a list of : seperated paths
+      build_dir:    # path to a scratch space
+
+Additionally you can set :ref:`arguments` and :ref:`specVariables` at a global level in the constraints section. As an example here
+we are adding ``--disable-cache`` as an argument for every image build we do with apptainer.
+
+.. code-block:: yaml
+
+    constraints:
+      arguments:
+        - value: --disable-cache
+          when: backend=apptainer
diff --git a/docs/source/reference/index.rst b/docs/source/reference/index.rst
index f386b53..0c01598 100644
--- a/docs/source/reference/index.rst
+++ b/docs/source/reference/index.rst
@@ -8,6 +8,7 @@ Technical Docs
 .. toctree::
    :maxdepth: 2
 
+   config
    vtmp
-   specifications
+   specs
    build
diff --git a/docs/source/reference/specifications.rst b/docs/source/reference/specifications.rst
deleted file mode 100644
index b02e926..0000000
--- a/docs/source/reference/specifications.rst
+++ /dev/null
@@ -1,160 +0,0 @@
-*******************
-Specifications.yaml
-*******************
-
-Basic Layout
-############
-The `specifications.yaml` file defines image availability, dependencies and a number of other available
-options for an image. Velocity doesn't care about any extraneous data you may have in it. All that Velocity looks
-for is a base level section called `build_specifications`. Any other sections that you may add for your own purposes
-are ignored by Velocity. Under `build_specifications` there should be a tree defining under what conditions the image
-can be built in the order `system` > `backend` > `distro`. For example if I am creating an `centos` based image for use on
-frontier which only has Apptainer on it then I should have the following structure in my `specifications.yaml` file.
-
-.. code-block:: yaml
-
-    build_specifications:
-      frontier:
-        apptainer:
-          ubuntu:
-            # config options
-
-If I wanted it to be available on summit as well which has Apptainer and Podman I would add the following.
-
-.. code-block:: yaml
-
-    build_specifications:
-      frontier:
-        apptainer:
-          centos:
-            # config options
-      summit:
-        apptainer:
-          centos:
-            # config options
-        podman:
-          centos:
-            # config options
-
-While `system` and `backend` are fairly self explanatory the `distro` is a little more obscure. Velocity does not do
-any checks to make sure that the image being built is actually of the right distro. All that the distro tells Velocity to do is
-look in the `templates` folder of an image for a template called `<distro>.vtmp` (e.g. centos.vtmp). If a template with
-the right name cannot be found Velocity will error.
-
-.. code-block:: bash
-    :caption: image structure
-
-    .
-    └── <image name>
-        └── <image version>
-            ├── specifications.yaml
-            └── templates
-                └── <distro>.vtmp
-
-
-Config Options
-##############
-Under each `system` > `backend` > `distro` section there are a variaty of config options available.
-
-dependencies
-------------
-The `dependencies` section is a list of images that must be built before the current one can be.
-
-.. code-block:: yaml
-
-    build_specifications:
-      frontier:
-        apptainer:
-          ubuntu:
-            dependencies:
-              - dep_one
-              - dep_two
-                # ...
-
-Some times you may want a specific version of a dependency in which case Velocity provides several ways to specify dependency
-relationships. Versions are compared by splitting the version string up based on periods and then comparing the sections
-left to right alphanumerically.
-
-.. code-block:: yaml
-
-    build_specifications:
-      frontier:
-        apptainer:
-          ubuntu:
-            dependencies:
-              - dep_one@=11.5       # equal to 11.5
-              - dep_two@_11.5       # less than or equal to 11.5
-              - dep_three@^11.5     # greater than or equal to 11.5
-              - dep_four@11.2%11.8  # inbetween 11.2 and 11.8 (inclusive)
-                # ...
-
-prolog
-------
-There are certain occasions when some commands need to be run on the host machine before an image is built. These
-commands can be placed in a bash script in a directory which matches the system name. All that you need to do in the
-`specifications.yaml` file is put the script name.
-
-.. code-block:: yaml
-
-    build_specifications:
-      frontier:
-        apptainer:
-          ubuntu:
-            dependencies:
-              - dep_one
-              - dep_two
-                # ...
-            prolog: example_prolog.sh
-
-.. code-block:: bash
-    :caption: VELOCITY_IMAGE_DIR
-
-    .
-    ├── <image name>
-        └── <image version>
-            ├── <system>
-            │    └── example_prolog.sh
-            ├── specifications.yaml
-            └── templates
-                └── <distro>.vtmp
-
-arguments
----------
-Any arguments specified here will be added to the build command.
-
-.. code-block:: yaml
-
-    build_specifications:
-      frontier:
-        apptainer:
-          ubuntu:
-            dependencies:
-              - dep_one
-              - dep_two
-                # ...
-            prolog: example_prolog.sh
-            arguments:
-              - '--build-arg EXAMPLE=8046'
-
-This will result in `apptainer build --build-arg EXAMPLE=8046 ...` when the image is built.
-
-variables
----------
-Here you can define :ref:`variables<variables>` for the VTMP file to use when it is parsed.
-
-.. code-block:: yaml
-
-    build_specifications:
-      frontier:
-        apptainer:
-          ubuntu:
-            dependencies:
-              - dep_one
-              - dep_two
-                # ...
-            prolog: example_prolog.sh
-            arguments:
-              - '--build-arg EXAMPLE=8046'
-            variables:
-              - arch: x86_64
-              - url: 'https://example.com'
diff --git a/docs/source/reference/specs.rst b/docs/source/reference/specs.rst
new file mode 100644
index 0000000..d3667f4
--- /dev/null
+++ b/docs/source/reference/specs.rst
@@ -0,0 +1,114 @@
+*******************
+Specs.yaml
+*******************
+
+About
+#####
+The `specs.yaml` file defines image availability, dependencies and a number of other available
+options for an image.
+
+Config Options
+##############
+
+versions
+--------
+The `versions` section defines a list of versions and their availability.
+
+.. code-block:: yaml
+
+    versions:
+      - spec: 45
+        when: distro=ubuntu
+      - spec:
+          - 46
+          - 47
+        when: backend=podman
+
+dependencies
+------------
+The `dependencies` section is used to specify prerequist images.
+
+.. code-block:: yaml
+
+    dependencies:
+      - spec: ubuntu
+        when: distro=ubuntu
+      - spec:
+          - "gcc@12:"
+          - pytorch
+        when: myapp@:2.3
+
+templates
+---------
+By default velocity looks for a template called ``default.vtmp``, but using the `templates` section you can specify an
+alternate template.
+
+.. code-block:: yaml
+
+    templates:
+      - name: second_tmp
+        when: "myapp@2:"
+
+.. _arguments:
+
+arguments
+---------
+Use the `argument` section to add build time arguments to an image.
+
+.. code-block:: yaml
+
+    arguments:
+      - value: --disable-cache
+        when: backend=apptainer
+
+.. _specVariables:
+
+variables
+---------
+Use the `variables` section to set template variables.
+
+.. code-block:: yaml
+
+    variables:
+      - name: test_var
+        value: "Test value."
+
+files
+-----
+Use the `files` section to specify files or directories in the `files` folder that you want copied to the build directory.
+
+.. code-block:: yaml
+
+    files:
+      - name: config.json
+
+prologs
+-------
+Use the `prologs` section to bash commands that you want to run before the build.
+
+.. code-block:: yaml
+
+    prologs:
+      - script: |
+          git clone ...
+        when: system=summit
+
+Using ``when``
+##############
+A few notes about using ``when`` to filter config options. The ``when`` option can be used to filter configs as shown
+above by system, backend, distro and dependencies. The only exception to this is the `versions` section which cannot
+be filtered by dependencies. List each item that you want to filter by separated by a space e.g. ``gcc@12.3 system=frontier``.
+Additionally you can specify the scope of a ``when`` by specifying the ``scope``. The default scope is ``image`` which means
+that the when statement is evaluated on the current image. So say you want to apply a config in the gcc `specs.yaml` file
+to every gcc version greater than 10.3.0, you would use ``when: ^ubuntu:``. Alternatively you can set the scope to ``build``
+when you want the when statement evaluated on the current build.
+
+.. code-block:: yaml
+
+    variable:
+      - name: TEST
+        value: "1 2 3 4"
+        when: ubuntu
+        scope: build
+
+This can be read as "If the ubuntu image is in the current set of images to be built then add the TEST variable."
diff --git a/docs/source/reference/vtmp.rst b/docs/source/reference/vtmp.rst
index fe621ed..2c05c5a 100644
--- a/docs/source/reference/vtmp.rst
+++ b/docs/source/reference/vtmp.rst
@@ -3,76 +3,94 @@ VTMP Format
 ***********
 
 VTMP files are used by Velocity to generate the appropriate script for a particular backend.
-While certain features are supported across all backends, others are exclusive to one backend and many are interpreted
-quite differently between the different backends. The goal of the VTMP files are to provide a unified API for
+The goal of the VTMP files are to provide a unified API for
 container images across multiple backends but they are not feature exhaustive.
 VTMP files are split up into a number of sections.
 
 .. code-block:: text
     :caption: Example VTMP
 
+    >>> this is a comment
     @from
-        # can only take one of these
+        >>> can only take one of these examples
         docker.io/ubuntu:20.04
-        /example.sif # only works for apptainer backend
-        %(__base__)
+        /example.sif    >>> only works for apptainer backend
+        {{ __base__ }}  >>> build on the previous image
 
-    @pre # same as post but placed right after @from
-        # anything here is taken literally
-        # denote the start of a line with |
-        |echo 'Without tab'
+    @pre
+        >>> anything here is taken literally
+        >>> optionally denote the start of a line with | (helpful for white space)
+        echo 'Without tab'
         |    echo 'With tab'
 
-    @arg
-        # define arg names
-        example_arg # reference this argument throughout the script with @(<arg>)
-
     @copy
-        # list files to copy, format <src> <dest>
+        >>> list files to copy, format <src> <dest>
         /external/file /internal/file
 
     @run
-        # list of commands to run in container
+        >>> list of commands to run in container
         echo 'Hello world'
-        ?podman echo 'podman'
-        ?apptainer echo 'apptainer'
-        echo %(template_variable)
-        echo @(example_arg) # see @arg
+        ?? distro=podman |> echo 'podman' ??    >>> conditional
+        ?? distro=apptainer |> echo 'apptainer' ??
+        echo {{ template_variable }}
+        echo @@ example_arg @@  >>> define an argument
+        !envar TEST_VAR I want this here and in the @env section    >>> the !envar directive
 
     @env
-        # set env variables
+        >>> set env variables
         PATH /something:$PATH
 
     @label
-        # set container labels
-        velocity.image.%(__name__)__%(__tag__) %(__hash__)
-
+        >>> set container labels
+        IMAGE_NAME {{ __name__ }}
 
     @entry
-        # set entrypoint or %runscript
-        # only one line allowed
+        >>> set  ENTRYPOINT or %runscript
+        >>> only one line allowed
+
         /bin/bash
 
-    @post # same as pre but placed after everything else
+    @post >>> same as pre but placed after everything else
 
 .. _variables:
 
 Variables
 #########
 The first thing that is done to a VTMP file is the substitution of any variables found in the script. Variables are indicated
-by `%(<variable>)`. In Velocity variables can be defined by the user in the `specifications.yaml` file, but Velocity also
+by ``{{ <variable> }}``. In Velocity variables can be defined by the user in the `specs.yaml` file, but Velocity also
 provides a set of build time variables.
 
 .. code-block:: text
 
     __backend__
     __distro__
-    __hash__        # template hash
-    __base__        # previous image to build on
-    __name__        # current image name e.g. cuda
+    __base__        >>> previous image to build on
+    __name__        >>> current image name e.g. cuda
     __system__
-    __tag__         # image "version" e.g. 11.7.1
+    __version__     >>> image "version" e.g. 11.7.1
+    __version_major__
+    __version_minor__
+    __version_patch__
+    __version_suffix__
     __timestamp__
+    >>> the versions of all images in a build are also available in the following format
+    __<name>__version__
+    __<name>__version_major__
+    __<name>__version_minor__
+    __<name>__version_patch__
+    __<name>__version_suffix__
+
+Arguments
+#########
+You can also pass in arguments at build time using the form ``@@ <name> @@``, but don't forget to add the
+argument in ``specs.yaml`` so that is gets added to the build command or the build will fail.
+
+Conditionals
+############
+If there is a line in a template that you only want under certain conditions use ``?? <condition> |> <text> ??``.
+The whole conditional will be replaced with the <text> section if the condition is true; otherwise, it will substitute
+an empty string. The conditionals can include the following components, ``system=<value>``, ``backend=<value>``,
+``distro=<value>`` and a dependency in the form ``^<value>``.
 
 Sections
 ########
@@ -92,12 +110,6 @@ allows you to add white space to the beginning of a line. The only difference be
 are where they are placed in the script the `@pre` section is placed at the beginning of the script
 right after the `@from` section.
 
-@arg
-----
-The `@arg` section specifies build time arguments that are passed to the backend. If these arguments are not passed to
-the backend at build time it will fail. Once an arg has been defined in the `@arg` section it can be referenced
-throughout the script with `@(<argument>)`.
-
 @copy
 -----
 The `@copy` section takes a list of files/dir to be copied in the <src> <dest> format.
@@ -105,12 +117,14 @@ The `@copy` section takes a list of files/dir to be copied in the <src> <dest> f
 @run
 ----
 The `@run` section takes a list of commands to be run in the container. These commands should be written as if they all
-occur one after the other in the same shell.
+occur one after the other in the same shell. One added feature to the @run section is the ``!envar`` directive. This
+directive will add the following variable definition to the @env section as well as to the current @run section. Use
+the format ``!envar <name> <value>``.
 
 @env
 ----
 The `@env` section sets environment variables. These variables will only be available when the container is run or in
-the next build so if there is a variable that is needed in the run section you must declare it there as well.
+the next build so if there is a variable that is needed in the run section use the ``!envar`` directive in the @run section.
 
 @label
 ------
@@ -125,8 +139,3 @@ in the `@entry` section.
 @post
 -----
 See :ref:`@pre <pre_section>`. The `@post` section is placed at the end of the script after all other sections.
-
-Conditionals
-############
-It is handy somtimes to be able to limit certain commands to a backend(s) this can be done by placing a `?<backend>`
-at the beginning of the line in question.
diff --git a/docs/source/starting/basic.rst b/docs/source/starting/basic.rst
index 8c4abb5..99d4beb 100644
--- a/docs/source/starting/basic.rst
+++ b/docs/source/starting/basic.rst
@@ -3,131 +3,82 @@
 Overview
 ********
 
-Concept
-#######
-Velocity is a tool to help with the maintenance of a variety of container builds on multiple systems, backends
-(e.g podman or apptainer) and distros.
-
 How it Works
 ############
 Velocity works by building a set of containers in a chain so that the final container has all of the needed components.
-
-
-Layout
-######
-The contents of the Velocity repo are fairly simple.
-
-.. code-block::
-
-    .
-    ├── docs
-    ├── lib
-    ├── README.md
-    ├── setup-env.sh
-    └── velocity
-
-For informational purposes there is a folder `docs` which holds this documentation and a README file.
-The `setup-env.sh` script can be used to 'install' velocity. The lib folder holds a python package which the
-velocity script needs to run.
-
-
-
+Velocity maintains a very hands off approach. It is only as good as the templates/configuration that you write.
+In general it will assume that a particular build will work unless you tell it otherwise. It is important to note
+that while Velocity has many features that are similar to those provided by a package manager, it is NOT a
+package manager. Rather it should be viewed as a templating and build orchestration tool.
 
 Installation
 ############
 
-First you will need to set up a conda environment for Velocity and install the following packages:
-
-.. note::
-
-    For more info on creating a custom conda environment on OLCF systems visit https://docs.olcf.ornl.gov/software/python/index.html#custom-environments.
-
-.. code-block::
-
-    conda install pyyaml networkx colorama python-editor
-
-.. important::
-
-    If you wish to build the docs you will also need to install `sphinx` and `sphinx-rtd-theme`.
-
-Next clone the Velocity git repository to the desired location.
+The easiest way to install velocity is to install prebuilt python packages using pip.
 
 .. code-block:: bash
 
-    git clone https://gitlab.ccs.ornl.gov/saue-software/velocity.git
+    pip install olcf-velocity
 
-You can then setup Velocity by sourcing the `setup-env.sh` script.
+You can also clone the velocity repository and build/install velocity from source.
 
 .. code-block:: bash
 
-    . ./velocity/setup-env.sh
-
-The `setup-env.sh` script will help you choose the value of several environment :ref:`variables<configuration>`
-that velocity uses.
+    git clone https://github.com/olcf/velocity.git
+    cd velocity
+    python3 -m build
+    # install the built python wheel package
+    pip install dist/olcf-velocity-<version>*.whl
 
-You should now be able to run the `velocity` command.
+Now you can use Velocity as a python module! We recommend setting a bash alias for convenience.
 
 .. code-block:: bash
 
+    user@hostname:~$ alias velocity="python3 -m velocity"
     user@hostname:~$ velocity
-    ==> System: x86_64
-    ==> Backend: podman
-    ==> Distro: fedora
+    usage: velocity [-h] [-v] [-D {TRACE,DEBUG,INFO,SUCCESS,WARNING,ERROR,CRITICAL}] [-b BACKEND] [-s SYSTEM] [-d DISTRO] {build,avail,spec} ...
 
-    usage: velocity [-h] [-v] [-b BACKEND] [-s SYSTEM] [-d DISTRO]
-                    {build,avail,spec,edit} ...
-
-    Build tool for OLCF containers
+    build tool for OLCF containers
 
     positional arguments:
-      {build,avail,spec,edit}
+      {build,avail,spec}
         build               build specified container image
         avail               lookup available images
         spec                lookup image dependencies
-        edit                edit image files
 
     options:
       -h, --help            show this help message and exit
       -v, --version         program version
+      -D {TRACE,DEBUG,INFO,SUCCESS,WARNING,ERROR,CRITICAL}, --debug {TRACE,DEBUG,INFO,SUCCESS,WARNING,ERROR,CRITICAL}
+                            set debug output level
       -b BACKEND, --backend BACKEND
       -s SYSTEM, --system SYSTEM
       -d DISTRO, --distro DISTRO
 
-    See (https://gitlab.ccs.ornl.gov/saue-software/velocity)
-
+    See https://github.com/olcf/velocity
 
 .. _configuration:
 
 Configuration
 #############
-There are five system variables that need to be set for Velocity to work (these are set in the `setup-env.sh` script).
+Velocity has a number of configuration options. The basic ones are setting the system name, container backend,
+container distro, the path(s) to your image definitions and the build scratch directory.
+To see more configuration options go to the :doc:`configuration </reference/config>` page. The easiest way to configure velocity is to
+edit ``~/.velocity/config.yaml``.
 
-`VELOCITY_IMAGE_DIR`
---------------------
-This variable points to the directory containing the the image definitions.
+.. code-block::
+
+    velocity:
+      system: frontier
+      backend: apptainer
+      distro: ubuntu
+      image_path: # a list of : seperated paths
+      build_dir: # path to a scratch space
 
 .. note::
 
     Image definitions can be created by the user as needed but a base set for usage at OLCF are provided at
-    `https://gitlab.ccs.ornl.gov/saue-software/velocity-images.git`
-
-`VELOCITY_SYSTEM`
------------------
-This variable specifies what computer system you are building for (e.g. frontier).
-
-`VELOCITY_BACKEND`
-------------------
-This variable specifies the container backend that should be used (e.g podman).
-
-`VELOCITY_DISTRO`
------------------
-This variable specifies the distro of the container images that will be built.
-
-`VELOCITY_BUILD_DIR`
---------------------
-This variable specifies a scratch space for Velocity to preform builds in.
-
-
+    https://github.com/olcf/velocity-images
 
 Basic Usage
 ###########
@@ -140,27 +91,20 @@ The `avail` command prints the defined images that can be built.
 .. code-block:: bash
 
     user@hostname:~$ velocity avail
-    ==> System: x86_64
-    ==> Backend: podman
-    ==> Distro: centos
-
-    ==> centos
-            stream8
     ==> gcc
-            11.2.0
-    ==> hmmer
-            3.4
-    ==> kalign
-            3.4.0
-    ==> miniforge3
-            23.11.0
-    ==> python
-            3.11.8
-    ==> pytorch
-            latest
-
-Each image is listed and then indented underneath is a list of the available versions
-(in velocity they are called tags).
+        12.3.0
+        13.2.0
+        14.1.0
+    ==> mpich
+        3.4.3
+    ==> rocm
+        5.7.1
+    ==> ubuntu
+        20.04
+        22.04
+        24.04
+
+Each image is listed and then indented underneath is a list of the available versions.
 
 `spec`
 ------
@@ -170,37 +114,28 @@ The `spec` command shows the dependencies for a given image (or list of images)
 .. code-block:: bash
 
     user@hostname:~$ velocity spec pytorch
-    ==> System: summit
-    ==> Backend: podman
-    ==> Distro: centos
-
-      > pytorch@=latest
-         ^cuda@=11.7.1
-            ^centos@=stream8
-         ^cudnn@=8.5.0.96
-            ^cuda@=11.7.1
-               ^centos@=stream8
-         ^spectrum-mpi@=10.4.0.6
-            ^centos@=stream8
-         ^gcc@=11.2.0
-            ^centos@=stream8
-         ^miniforge3@=23.11.0
-            ^centos@=stream8
-
+      > pytorch@latest
+         ^cuda@11.7.1
+            ^centos@stream8
+         ^cudnn@8.5.0.96
+            ^cuda@11.7.1
+               ^centos@stream8
+         ^spectrum-mpi@10.4.0.6
+            ^centos@stream8
+         ^gcc@11.2.0
+            ^centos@stream8
+         ^miniforge3@23.11.0
+            ^centos@stream8
 
 
 `build`
 -------
 
-The `build` can be used to build an container image from one or more image definitions.
+The `build` command can be used to build an container image from one or more image definitions.
 
 .. code-block:: bash
 
     user@hostname:~$ velocity build centos
-    ==> System: x86_64
-    ==> Backend: podman
-    ==> Distro: centos
-
     ==> Build Order:
             centos@=stream8
 
@@ -214,10 +149,6 @@ Both the spec and the build command can also take a list of images.
 .. code-block:: bash
 
     user@hostname:~$ velocity build gcc python
-    ==> System: x86_64
-    ==> Backend: podman
-    ==> Distro: centos
-
     ==> Build Order:
             centos@=stream8
             gcc@=11.2.0
@@ -237,20 +168,3 @@ Both the spec and the build command can also take a list of images.
     ==> sunflyhd: GENERATING SCRIPT ...
     ==> sunflyhd: BUILDING ...
     ==> sunflyhd: IMAGE localhost/python__3.11.8__x86_64__centos:latest (python@=3.11.8) BUILT [0:23:19]
-
-`edit`
-------
-The edit command can be used to edit the VTMP or specification file for an image. By default
-it edits the VTMP file. Add `-s` to edit the `specifications.yaml` file.
-
-.. code-block:: bash
-
-    user@hostname:~$ velocity edit --help
-    usage: velocity edit [-h] [-s] target
-
-    positional arguments:
-      target               image to edit
-
-    options:
-      -h, --help           show this help message and exit
-      -s, --specification  edit the specifications file
diff --git a/docs/source/starting/tutorial.rst b/docs/source/starting/tutorial.rst
index 2214604..d232464 100644
--- a/docs/source/starting/tutorial.rst
+++ b/docs/source/starting/tutorial.rst
@@ -2,395 +2,261 @@
 Creating Your First Image
 *************************
 
-Prerequisites
-#############
-You will need to have the Velocity repo cloned and the following environment variables set. You can do this by
-sourcing the `setup-env.sh` script.
-
-.. code-block:: bash
-
-    VELOCITY_IMAGE_DIR=<path to image dir>
-    VELOCITY_BACKEND=podman # if you use apptainer you will need to make changes to some of the examples
-    VELOCITY_BUILD_DIR=/tmp/velocity/build
-    VELOCITY_SYSTEM=x86_64  # if you use a different system name you will need to make changes to some of the examples
-    VELOCITY_ROOT=<git repo> # you will also need to add this to PATH
-    VELOCITY_DISTRO=fedora
-
 Base Image
 ##########
-Let's start with a simple base image. This image will pull an fedora docker image and update the packages.
-Start by creating a directory in the image directory called `fedora` (for this tutorial we are starting with an empty
-image directory). Next we need to create a directory in the `fedora` directory for the version of fedora that we want.
-Let's use `38`. In this directory create a file called `specifications.yaml` and a directory called `templates` with
-a file named `fedora.vtmp`. Your image directory and files should now look like this.
+Let's start with a simple base image. This image will pull an fedora docker image and update the packages. For this
+tutorial I have created the empty directory ``/tmp/velocity/images`` and configured it as the image directory. I have set
+the build directory to ``/tmp/velocity/build``, the backend to ``apptainer`` and the distro as ``fedora``. All
+commands are run in ``/tmp/velocity``.
+Start by creating a directory in the image directory called ``fedora``. In this directory create a file called
+``specs.yaml`` and a directory called ``templates`` with
+a file named ``default.vtmp``. Your image directory and files should now look like this.
 
 .. code-block:: bash
-    :caption: VELOCITY_IMAGE_DIR
+    :caption: /tmp/velocity/images
+
+    fedora
+    ├── specs.yaml
+    └── templates
+        └── default.vtmp
 
-    .
-    └── fedora
-        └── 38
-            ├── specifications.yaml
-            └── templates
-                └── fedora.vtmp
 
 .. code-block:: yaml
-    :caption: fedora/38/specifications.yaml
+    :caption: specs.yaml
 
-    build_specifications:
+    versions:
+      - spec: 38
+        when: distro=fedora
 
-      x86_64:
-        podman:
-          fedora: {}
 
 
 .. code-block:: text
-    :caption: fedora/38/templates/fedora.vtmp
+    :caption: default.vtmp
 
     @from
-        docker.io/fedora:38
+        docker.io/fedora:{{ __version__ }}
 
     @run
         dnf -y upgrade
-
-    @label
-        velocity.config.system %(__system__)
-        velocity.config.backend %(__backend__)
-        velocity.config.distro %(__distro__)
-        velocity.image.%(__name__)__%(__tag__) %(__hash__)
+        dnf clean all
 
 Now if you run `velocity avail` you should get the following.
 
 .. code-block:: bash
 
     user@hostname:~$ velocity avail
-    ==> System: x86_64
-    ==> Backend: podman
-    ==> Distro: fedora
-
     ==> fedora
-            38
+        38
 
 Now build the image.
 
 .. code-block:: bash
 
     user@hostname:~$ velocity build fedora
-    ==> System: x86_64
-    ==> Backend: podman
-    ==> Distro: fedora
-
     ==> Build Order:
-            fedora@=38
+        fedora@38-aa51aa7
+
+    ==> aa51aa7: BUILD fedora@38 ...
+    ==> aa51aa7: GENERATING SCRIPT ...
+    ==> aa51aa7: BUILDING ...
+    ==> aa51aa7: IMAGE /tmp/velocity/build/fedora-38-aa51aa7/aa51aa7.sif (fedora@38) BUILT [0:01:07]
 
-    ==> yftozouc: BUILD fedora@=38 ...
-    ==> yftozouc: GENERATING SCRIPT ...
-    ==> yftozouc: BUILDING ...
-    ==> yftozouc: IMAGE localhost/fedora__38__x86_64__fedora:latest (fedora@=38) BUILT [0:07:10]
+    ==> BUILT: /tmp/velocity/fedora-38__x86_64-fedora.sif
 
 If you wish to see more output you can add the `-v` flag:
 
 .. code-block:: bash
 
     user@hostname:~$ velocity build fedora -v
-    ==> System: x86_64
-    ==> Backend: podman
-    ==> Distro: fedora
-
     ==> Build Order:
-            fedora@=38
-
-    ==> xuoykrdt: BUILD fedora@=38 ...
-    ==> xuoykrdt: GENERATING SCRIPT ...
-            SCRIPT: /tmp/velocity/build/xuoykrdt/script
-            FROM docker.io/fedora:38
-
-            RUN dnf -y upgrade
-
-            LABEL velocity.config.system="x86_64" \
-                velocity.config.backend="podman" \
-                velocity.config.distro="fedora" \
-                velocity.image.fedora__38="ff9fa85cf102560cf3fe2014c3c758fbb3809247537abbeab2c4b67c62dda164"
-
-    ==> xuoykrdt: BUILDING ...
-            #!/usr/bin/env bash
-            podman build -f /tmp/velocity/build/xuoykrdt/script -t localhost/fedora__38__x86_64__fedora:latest .;
-            STEP 1/3: FROM docker.io/fedora:38
-            STEP 2/3: RUN dnf -y upgrade
-            Fedora 38 - x86_64                              131 kB/s |  84 MB     10:53
-            Fedora 38 openh264 (From Cisco) - x86_64        2.9 kB/s | 2.6 kB     00:00
-            Fedora Modular 38 - x86_64                      1.1 MB/s | 2.8 MB     00:02
-            Fedora 38 - x86_64 - Updates                    4.5 MB/s |  40 MB     00:09
-            Fedora Modular 38 - x86_64 - Updates            152 kB/s | 2.1 MB     00:14
-            Last metadata expiration check: 0:00:01 ago on Wed Mar 27 20:09:54 2024.
-            Dependencies resolved.
-            ================================================================================
-             Package                       Arch     Version                 Repo       Size
-            ================================================================================
-            Upgrading:
-             curl                          x86_64   8.0.1-7.fc38            updates   348 k
-             dnf                           noarch   4.19.0-1.fc38           updates   507 k
-             dnf-data                      noarch   4.19.0-1.fc38           updates    39 k
-             elfutils-default-yama-scope   noarch   0.191-1.fc38            updates    12 k
-             elfutils-libelf               x86_64   0.191-1.fc38            updates   208 k
-             elfutils-libs                 x86_64   0.191-1.fc38            updates   263 k
-             expat                         x86_64   2.6.0-1.fc38            updates   112 k
-             keyutils-libs                 x86_64   1.6.3-1.fc38            updates    31 k
-             libcurl                       x86_64   8.0.1-7.fc38            updates   315 k
-             libdnf                        x86_64   0.73.0-1.fc38           updates   681 k
-             libgcc                        x86_64   13.2.1-7.fc38           updates   115 k
-             libgomp                       x86_64   13.2.1-7.fc38           updates   324 k
-             libsolv                       x86_64   0.7.28-1.fc38           updates   426 k
-             libstdc++                     x86_64   13.2.1-7.fc38           updates   870 k
-             ncurses-base                  noarch   6.4-7.20230520.fc38.1   updates    88 k
-             ncurses-libs                  x86_64   6.4-7.20230520.fc38.1   updates   336 k
-             python3                       x86_64   3.11.8-2.fc38           updates    28 k
-             python3-dnf                   noarch   4.19.0-1.fc38           updates   606 k
-             python3-hawkey                x86_64   0.73.0-1.fc38           updates   107 k
-             python3-libdnf                x86_64   0.73.0-1.fc38           updates   859 k
-             python3-libs                  x86_64   3.11.8-2.fc38           updates   9.6 M
-             systemd-libs                  x86_64   253.17-1.fc38           updates   649 k
-             vim-data                      noarch   2:9.1.158-1.fc38        updates    23 k
-             vim-minimal                   x86_64   2:9.1.158-1.fc38        updates   808 k
-             yum                           noarch   4.19.0-1.fc38           updates    37 k
-
-            Transaction Summary
-            ================================================================================
-            Upgrade  25 Packages
-
-            Total download size: 17 M
-            Downloading Packages:
-            (1/25): dnf-data-4.19.0-1.fc38.noarch.rpm       107 kB/s |  39 kB     00:00
-            (2/25): elfutils-default-yama-scope-0.191-1.fc3 224 kB/s |  12 kB     00:00
-            (3/25): curl-8.0.1-7.fc38.x86_64.rpm            637 kB/s | 348 kB     00:00
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-            (7/25): keyutils-libs-1.6.3-1.fc38.x86_64.rpm   331 kB/s |  31 kB     00:00
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-            (10/25): libcurl-8.0.1-7.fc38.x86_64.rpm        1.7 MB/s | 315 kB     00:00
-            (11/25): libgomp-13.2.1-7.fc38.x86_64.rpm       1.8 MB/s | 324 kB     00:00
-            (12/25): libdnf-0.73.0-1.fc38.x86_64.rpm        1.8 MB/s | 681 kB     00:00
-            (13/25): libsolv-0.7.28-1.fc38.x86_64.rpm       2.1 MB/s | 426 kB     00:00
-            (14/25): ncurses-base-6.4-7.20230520.fc38.1.noa 423 kB/s |  88 kB     00:00
-            (15/25): ncurses-libs-6.4-7.20230520.fc38.1.x86 1.3 MB/s | 336 kB     00:00
-            (16/25): python3-3.11.8-2.fc38.x86_64.rpm       286 kB/s |  28 kB     00:00
-            (17/25): libstdc++-13.2.1-7.fc38.x86_64.rpm     1.8 MB/s | 870 kB     00:00
-            (18/25): python3-hawkey-0.73.0-1.fc38.x86_64.rp 834 kB/s | 107 kB     00:00
-            (19/25): python3-dnf-4.19.0-1.fc38.noarch.rpm   2.5 MB/s | 606 kB     00:00
-            (20/25): python3-libdnf-0.73.0-1.fc38.x86_64.rp 1.6 MB/s | 859 kB     00:00
-            (21/25): systemd-libs-253.17-1.fc38.x86_64.rpm  1.4 MB/s | 649 kB     00:00
-            (22/25): vim-data-9.1.158-1.fc38.noarch.rpm     196 kB/s |  23 kB     00:00
-            (23/25): yum-4.19.0-1.fc38.noarch.rpm           270 kB/s |  37 kB     00:00
-            (24/25): vim-minimal-9.1.158-1.fc38.x86_64.rpm  2.5 MB/s | 808 kB     00:00
-            (25/25): python3-libs-3.11.8-2.fc38.x86_64.rpm  3.6 MB/s | 9.6 MB     00:02
-            --------------------------------------------------------------------------------
-            Total                                           3.6 MB/s |  17 MB     00:04
-            Running transaction check
-            Transaction check succeeded.
-            Running transaction test
-            Transaction test succeeded.
-            Running transaction
-              Preparing        :                                                        1/1
-              Upgrading        : libgcc-13.2.1-7.fc38.x86_64                           1/50
-              Running scriptlet: libgcc-13.2.1-7.fc38.x86_64                           1/50
-              Upgrading        : libstdc++-13.2.1-7.fc38.x86_64                        2/50
-              Upgrading        : libsolv-0.7.28-1.fc38.x86_64                          3/50
-              Upgrading        : libdnf-0.73.0-1.fc38.x86_64                           4/50
-              Upgrading        : vim-data-2:9.1.158-1.fc38.noarch                      5/50
-              Upgrading        : ncurses-base-6.4-7.20230520.fc38.1.noarch             6/50
-              Upgrading        : ncurses-libs-6.4-7.20230520.fc38.1.x86_64             7/50
-              Upgrading        : libcurl-8.0.1-7.fc38.x86_64                           8/50
-              Upgrading        : expat-2.6.0-1.fc38.x86_64                             9/50
-              Upgrading        : python3-3.11.8-2.fc38.x86_64                         10/50
-              Upgrading        : python3-libs-3.11.8-2.fc38.x86_64                    11/50
-              Upgrading        : python3-libdnf-0.73.0-1.fc38.x86_64                  12/50
-              Upgrading        : python3-hawkey-0.73.0-1.fc38.x86_64                  13/50
-              Upgrading        : elfutils-libelf-0.191-1.fc38.x86_64                  14/50
-              Upgrading        : elfutils-default-yama-scope-0.191-1.fc38.noarch      15/50
-              Running scriptlet: elfutils-default-yama-scope-0.191-1.fc38.noarch      15/50
-              Upgrading        : dnf-data-4.19.0-1.fc38.noarch                        16/50
-              Upgrading        : python3-dnf-4.19.0-1.fc38.noarch                     17/50
-              Upgrading        : dnf-4.19.0-1.fc38.noarch                             18/50
-              Running scriptlet: dnf-4.19.0-1.fc38.noarch                             18/50
-              Upgrading        : yum-4.19.0-1.fc38.noarch                             19/50
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-              Upgrading        : curl-8.0.1-7.fc38.x86_64                             21/50
-              Upgrading        : vim-minimal-2:9.1.158-1.fc38.x86_64                  22/50
-              Upgrading        : systemd-libs-253.17-1.fc38.x86_64                    23/50
-              Upgrading        : libgomp-13.2.1-7.fc38.x86_64                         24/50
-              Upgrading        : keyutils-libs-1.6.3-1.fc38.x86_64                    25/50
-              Cleanup          : elfutils-libs-0.190-2.fc38.x86_64                    26/50
-              Cleanup          : systemd-libs-253.15-2.fc38.x86_64                    27/50
-              Cleanup          : vim-minimal-2:9.1.113-1.fc38.x86_64                  28/50
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-              Cleanup          : python3-hawkey-0.72.0-1.fc38.x86_64                  36/50
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-              Verifying        : python3-hawkey-0.73.0-1.fc38.x86_64                  37/50
-              Verifying        : python3-hawkey-0.72.0-1.fc38.x86_64                  38/50
-              Verifying        : python3-libdnf-0.73.0-1.fc38.x86_64                  39/50
-              Verifying        : python3-libdnf-0.72.0-1.fc38.x86_64                  40/50
-              Verifying        : python3-libs-3.11.8-2.fc38.x86_64                    41/50
-              Verifying        : python3-libs-3.11.7-2.fc38.x86_64                    42/50
-              Verifying        : systemd-libs-253.17-1.fc38.x86_64                    43/50
-              Verifying        : systemd-libs-253.15-2.fc38.x86_64                    44/50
-              Verifying        : vim-data-2:9.1.158-1.fc38.noarch                     45/50
-              Verifying        : vim-data-2:9.1.113-1.fc38.noarch                     46/50
-              Verifying        : vim-minimal-2:9.1.158-1.fc38.x86_64                  47/50
-              Verifying        : vim-minimal-2:9.1.113-1.fc38.x86_64                  48/50
-              Verifying        : yum-4.19.0-1.fc38.noarch                             49/50
-              Verifying        : yum-4.18.2-1.fc38.noarch                             50/50
-
-            Upgraded:
-              curl-8.0.1-7.fc38.x86_64
-              dnf-4.19.0-1.fc38.noarch
-              dnf-data-4.19.0-1.fc38.noarch
-              elfutils-default-yama-scope-0.191-1.fc38.noarch
-              elfutils-libelf-0.191-1.fc38.x86_64
-              elfutils-libs-0.191-1.fc38.x86_64
-              expat-2.6.0-1.fc38.x86_64
-              keyutils-libs-1.6.3-1.fc38.x86_64
-              libcurl-8.0.1-7.fc38.x86_64
-              libdnf-0.73.0-1.fc38.x86_64
-              libgcc-13.2.1-7.fc38.x86_64
-              libgomp-13.2.1-7.fc38.x86_64
-              libsolv-0.7.28-1.fc38.x86_64
-              libstdc++-13.2.1-7.fc38.x86_64
-              ncurses-base-6.4-7.20230520.fc38.1.noarch
-              ncurses-libs-6.4-7.20230520.fc38.1.x86_64
-              python3-3.11.8-2.fc38.x86_64
-              python3-dnf-4.19.0-1.fc38.noarch
-              python3-hawkey-0.73.0-1.fc38.x86_64
-              python3-libdnf-0.73.0-1.fc38.x86_64
-              python3-libs-3.11.8-2.fc38.x86_64
-              systemd-libs-253.17-1.fc38.x86_64
-              vim-data-2:9.1.158-1.fc38.noarch
-              vim-minimal-2:9.1.158-1.fc38.x86_64
-              yum-4.19.0-1.fc38.noarch
-
-            Complete!
-            --> 787eba03a2e
-            STEP 3/3: LABEL velocity.config.system="x86_64"     velocity.config.backend="podman"     velocity.config.distro="fedora"     velocity.image.fedora__38="ff9fa85cf102560cf3fe2014c3c758fbb3809247537abbeab2c4b67c62dda164"
-            COMMIT localhost/fedora__38__x86_64__fedora:latest
-            --> 17c3457c281
-            Successfully tagged localhost/fedora__38__x86_64__fedora:latest
-            17c3457c281309909691b183b77323eb56390792a787e4a319b494d40868c907
-    ==> xuoykrdt: IMAGE localhost/fedora__38__x86_64__fedora:latest (fedora@=38) BUILT [0:13:27]
+        fedora@38-aa51aa7
+
+    ==> aa51aa7: BUILD fedora@38 ...
+    ==> aa51aa7: GENERATING SCRIPT ...
+        SCRIPT: /tmp/velocity/build/fedora-38-aa51aa7/script
+        Bootstrap: docker
+        From: docker.io/fedora:38
+
+        %post
+        dnf -y upgrade
+        dnf clean all
+    ==> aa51aa7: BUILDING ...
+        #!/usr/bin/env bash
+        apptainer build --disable-cache /tmp/velocity/build/fedora-38-aa51aa7/aa51aa7.sif /tmp/velocity/build/fedora-38-aa51aa7/script;
+        Fedora 38 - x86_64                              2.3 MB/s |  83 MB     00:35
+        Fedora 38 openh264 (From Cisco) - x86_64        2.8 kB/s | 2.6 kB     00:00
+        Fedora Modular 38 - x86_64                      1.8 MB/s | 2.8 MB     00:01
+        Fedora 38 - x86_64 - Updates                    2.8 MB/s |  42 MB     00:14
+        Fedora Modular 38 - x86_64 - Updates            257 kB/s | 2.2 MB     00:08
+        Dependencies resolved.
+        ================================================================================
+         Package                            Arch    Version              Repo      Size
+        ================================================================================
+        Upgrading:
+         fedora-release-common              noarch  38-37                updates   20 k
+         fedora-release-container           noarch  38-37                updates   10 k
+         fedora-release-identity-container  noarch  38-37                updates   12 k
+         glibc                              x86_64  2.37-19.fc38         updates  2.1 M
+         glibc-common                       x86_64  2.37-19.fc38         updates  320 k
+         glibc-minimal-langpack             x86_64  2.37-19.fc38         updates   42 k
+         gnutls                             x86_64  3.8.5-1.fc38         updates  1.1 M
+         libnghttp2                         x86_64  1.52.0-3.fc38        updates   75 k
+         python-pip-wheel                   noarch  22.3.1-4.fc38        updates  1.4 M
+         python3                            x86_64  3.11.9-2.fc38        updates   28 k
+         python3-libs                       x86_64  3.11.9-2.fc38        updates  9.6 M
+         tpm2-tss                           x86_64  4.0.2-1.fc38         updates  391 k
+         vim-data                           noarch  2:9.1.393-1.fc38     updates   23 k
+         vim-minimal                        x86_64  2:9.1.393-1.fc38     updates  810 k
+        Installing weak dependencies:
+         libxcrypt-compat                   x86_64  4.4.36-1.fc38        updates   90 k
+
+        Transaction Summary
+        ================================================================================
+        Install   1 Package
+        Upgrade  14 Packages
+
+        Total download size: 16 M
+        Downloading Packages:
+        (1/15): fedora-release-container-38-37.noarch.r 160 kB/s |  10 kB     00:00
+        (2/15): fedora-release-common-38-37.noarch.rpm  228 kB/s |  20 kB     00:00
+        (3/15): fedora-release-identity-container-38-37 385 kB/s |  12 kB     00:00
+        (4/15): libxcrypt-compat-4.4.36-1.fc38.x86_64.r 648 kB/s |  90 kB     00:00
+        (5/15): glibc-minimal-langpack-2.37-19.fc38.x86 1.1 MB/s |  42 kB     00:00
+        (6/15): glibc-common-2.37-19.fc38.x86_64.rpm    2.4 MB/s | 320 kB     00:00
+        (7/15): libnghttp2-1.52.0-3.fc38.x86_64.rpm     1.7 MB/s |  75 kB     00:00
+        (8/15): glibc-2.37-19.fc38.x86_64.rpm           8.1 MB/s | 2.1 MB     00:00
+        (9/15): python3-3.11.9-2.fc38.x86_64.rpm        686 kB/s |  28 kB     00:00
+        (10/15): python-pip-wheel-22.3.1-4.fc38.noarch. 8.8 MB/s | 1.4 MB     00:00
+        (11/15): tpm2-tss-4.0.2-1.fc38.x86_64.rpm       6.1 MB/s | 391 kB     00:00
+        (12/15): gnutls-3.8.5-1.fc38.x86_64.rpm         3.1 MB/s | 1.1 MB     00:00
+        (13/15): vim-data-9.1.393-1.fc38.noarch.rpm     503 kB/s |  23 kB     00:00
+        (14/15): vim-minimal-9.1.393-1.fc38.x86_64.rpm  4.3 MB/s | 810 kB     00:00
+        (15/15): python3-libs-3.11.9-2.fc38.x86_64.rpm   11 MB/s | 9.6 MB     00:00
+        --------------------------------------------------------------------------------
+        Total                                            11 MB/s |  16 MB     00:01
+        Running transaction check
+        Transaction check succeeded.
+        Running transaction test
+        Transaction test succeeded.
+        Running transaction
+          Preparing        :                                                        1/1
+          Upgrading        : glibc-common-2.37-19.fc38.x86_64                      1/29
+          Upgrading        : glibc-minimal-langpack-2.37-19.fc38.x86_64            2/29
+          Running scriptlet: glibc-2.37-19.fc38.x86_64                             3/29
+          Upgrading        : glibc-2.37-19.fc38.x86_64                             3/29
+          Running scriptlet: glibc-2.37-19.fc38.x86_64                             3/29
+          Upgrading        : fedora-release-identity-container-38-37.noarch        4/29
+          Upgrading        : fedora-release-container-38-37.noarch                 5/29
+          Upgrading        : fedora-release-common-38-37.noarch                    6/29
+          Installing       : libxcrypt-compat-4.4.36-1.fc38.x86_64                 7/29
+          Upgrading        : python-pip-wheel-22.3.1-4.fc38.noarch                 8/29
+          Upgrading        : python3-3.11.9-2.fc38.x86_64                          9/29
+          Upgrading        : python3-libs-3.11.9-2.fc38.x86_64                    10/29
+          Upgrading        : vim-data-2:9.1.393-1.fc38.noarch                     11/29
+          Upgrading        : vim-minimal-2:9.1.393-1.fc38.x86_64                  12/29
+          Upgrading        : gnutls-3.8.5-1.fc38.x86_64                           13/29
+          Upgrading        : libnghttp2-1.52.0-3.fc38.x86_64                      14/29
+          Running scriptlet: tpm2-tss-4.0.2-1.fc38.x86_64                         15/29
+          Upgrading        : tpm2-tss-4.0.2-1.fc38.x86_64                         15/29
+          Cleanup          : fedora-release-common-38-36.noarch                   16/29
+          Cleanup          : gnutls-3.8.4-1.fc38.x86_64                           17/29
+          Cleanup          : tpm2-tss-4.0.1-3.fc38.x86_64                         18/29
+          Cleanup          : vim-minimal-2:9.1.309-1.fc38.x86_64                  19/29
+          Cleanup          : libnghttp2-1.52.0-2.fc38.x86_64                      20/29
+          Cleanup          : python3-3.11.8-2.fc38.x86_64                         21/29
+          Cleanup          : fedora-release-container-38-36.noarch                22/29
+          Cleanup          : fedora-release-identity-container-38-36.noarch       23/29
+          Cleanup          : vim-data-2:9.1.309-1.fc38.noarch                     24/29
+          Cleanup          : python3-libs-3.11.8-2.fc38.x86_64                    25/29
+          Cleanup          : python-pip-wheel-22.3.1-3.fc38.noarch                26/29
+          Cleanup          : glibc-2.37-18.fc38.x86_64                            27/29
+          Cleanup          : glibc-minimal-langpack-2.37-18.fc38.x86_64           28/29
+          Cleanup          : glibc-common-2.37-18.fc38.x86_64                     29/29
+          Running scriptlet: glibc-common-2.37-18.fc38.x86_64                     29/29
+          Verifying        : libxcrypt-compat-4.4.36-1.fc38.x86_64                 1/29
+          Verifying        : fedora-release-common-38-37.noarch                    2/29
+          Verifying        : fedora-release-common-38-36.noarch                    3/29
+          Verifying        : fedora-release-container-38-37.noarch                 4/29
+          Verifying        : fedora-release-container-38-36.noarch                 5/29
+          Verifying        : fedora-release-identity-container-38-37.noarch        6/29
+          Verifying        : fedora-release-identity-container-38-36.noarch        7/29
+          Verifying        : glibc-2.37-19.fc38.x86_64                             8/29
+          Verifying        : glibc-2.37-18.fc38.x86_64                             9/29
+          Verifying        : glibc-common-2.37-19.fc38.x86_64                     10/29
+          Verifying        : glibc-common-2.37-18.fc38.x86_64                     11/29
+          Verifying        : glibc-minimal-langpack-2.37-19.fc38.x86_64           12/29
+          Verifying        : glibc-minimal-langpack-2.37-18.fc38.x86_64           13/29
+          Verifying        : gnutls-3.8.5-1.fc38.x86_64                           14/29
+          Verifying        : gnutls-3.8.4-1.fc38.x86_64                           15/29
+          Verifying        : libnghttp2-1.52.0-3.fc38.x86_64                      16/29
+          Verifying        : libnghttp2-1.52.0-2.fc38.x86_64                      17/29
+          Verifying        : python-pip-wheel-22.3.1-4.fc38.noarch                18/29
+          Verifying        : python-pip-wheel-22.3.1-3.fc38.noarch                19/29
+          Verifying        : python3-3.11.9-2.fc38.x86_64                         20/29
+          Verifying        : python3-3.11.8-2.fc38.x86_64                         21/29
+          Verifying        : python3-libs-3.11.9-2.fc38.x86_64                    22/29
+          Verifying        : python3-libs-3.11.8-2.fc38.x86_64                    23/29
+          Verifying        : tpm2-tss-4.0.2-1.fc38.x86_64                         24/29
+          Verifying        : tpm2-tss-4.0.1-3.fc38.x86_64                         25/29
+          Verifying        : vim-data-2:9.1.393-1.fc38.noarch                     26/29
+          Verifying        : vim-data-2:9.1.309-1.fc38.noarch                     27/29
+          Verifying        : vim-minimal-2:9.1.393-1.fc38.x86_64                  28/29
+          Verifying        : vim-minimal-2:9.1.309-1.fc38.x86_64                  29/29
+
+        Upgraded:
+          fedora-release-common-38-37.noarch
+          fedora-release-container-38-37.noarch
+          fedora-release-identity-container-38-37.noarch
+          glibc-2.37-19.fc38.x86_64
+          glibc-common-2.37-19.fc38.x86_64
+          glibc-minimal-langpack-2.37-19.fc38.x86_64
+          gnutls-3.8.5-1.fc38.x86_64
+          libnghttp2-1.52.0-3.fc38.x86_64
+          python-pip-wheel-22.3.1-4.fc38.noarch
+          python3-3.11.9-2.fc38.x86_64
+          python3-libs-3.11.9-2.fc38.x86_64
+          tpm2-tss-4.0.2-1.fc38.x86_64
+          vim-data-2:9.1.393-1.fc38.noarch
+          vim-minimal-2:9.1.393-1.fc38.x86_64
+        Installed:
+          libxcrypt-compat-4.4.36-1.fc38.x86_64
+
+        Complete!
+        42 files removed
+    ==> aa51aa7: IMAGE /tmp/velocity/build/fedora-38-aa51aa7/aa51aa7.sif (fedora@38) BUILT [0:01:33]
+
+    ==> BUILT: /tmp/velocity/fedora-38__x86_64-fedora.sif
 
 Adding Different Versions
 #########################
 So now we have a base Fedora image. That's great but before we move on let's make some different versions of the image
-so that we have more options for building later. Go ahead and copy the `fedora/38` directory several times:
+so that we have more options for building later. Edit the fedora ``specs.yaml`` and add some versions.
 
-.. code-block:: bash
-
-    cp -rf fedora/38/ fedora/39
-    cp -rf fedora/38/ fedora/40
-    cp -rf fedora/38/ fedora/41
-
-For each of the versions you will need to go in and change the tag on the source. For example `docker.io/fedora:38`
-in `fedora/40/template/fedora.vtmp` should be changed to `docker.io/fedora:40`.
+.. code-block:: yaml
+    :caption: spec.yaml
 
-.. code-block:: bash
-    :caption: VELOCITY_IMAGE_DIR
-
-    .
-    └── fedora
-        ├── 38
-        │    ├── specifications.yaml
-        │    └── templates
-        │        └── fedora.vtmp
-        ├── 39
-        │    ├── specifications.yaml
-        │    └── templates
-        │        └── fedora.vtmp
-        ├── 40
-        │    ├── specifications.yaml
-        │    └── templates
-        │        └── fedora.vtmp
-        └── 41
-            ├── specifications.yaml
-            └── templates
-                └── fedora.vtmp
+    versions:
+      - spec:
+          - 38
+          - 39
+          - 40
+          - 41
+        when: distro=fedora
 
 .. code-block:: bash
 
     user@hostname:~$ velocity avail
-    ==> System: x86_64
-    ==> Backend: podman
-    ==> Distro: fedora
-
     ==> fedora
-            38
-            39
-            40
-            41
+        38
+        39
+        40
+        41
 
 Specifying Version
 ##################
-When building an image Velocity will default to the latest image. To specify a version use `<image>@=<version>` e.g.
-fedora\@=40. Versions are compared by splitting the version string up based on periods and then comparing the sections
-left to right alphanumerically.
+When building an image Velocity will default to the latest image. To specify a version use ``<image>@<version>`` e.g.
+``fedora@40``. Versions take the form ``<major>.<minor>.<patch>-<suffix>``. You can also specify greater than, less
+than, and in-between via ``<image>@<version>:``, ``<image>@:<version>`` and ``<image>@<version>:<version>`` respectively.
 
 Hello World!
 ############
@@ -398,525 +264,256 @@ Now let's get a little more complicated. Let's create an image that runs a pytho
 can give it whatever version you want:
 
 .. code-block:: bash
-    :caption: VELOCITY_IMAGE_DIR
-
-    .
-    ├── fedora
-    │    ├── 38
-    │    │   ├── specifications.yaml
-    │    │   └── templates
-    │    │       └── fedora.vtmp
-    │    ├── 39
-    │    │   ├── specifications.yaml
-    │    │   └── templates
-    │    │       └── fedora.vtmp
-    │    ├── 40
-    │    │   ├── specifications.yaml
-    │    │   └── templates
-    │    │       └── fedora.vtmp
-    │    └── 41
-    │        ├── specifications.yaml
-    │        └── templates
-    │            └── fedora.vtmp
-    └── hello-world
-        └── 1.0
-            ├── x86_64
-            │   └── hello_world.py
-            ├── specifications.yaml
-            └── templates
-                └── fedora.vtmp
-
-Notice that now there is a new folder called `x86_64` with a python file in it.
+    :caption: /tmp/velocity/images
+
+    fedora
+    ├── specs.yaml
+    └── templates
+        └── default.vtmp
+    hello-world
+    ├── files
+    │   └── hello_world.py
+    ├── specs.yaml
+    └── templates
+        └── default.vtmp
+
+Notice that now there is a new folder called ``files`` with a python script in it.
 
 .. code-block:: bash
-    :caption: hello-world/1.0/x86_64/hello_world.py
+    :caption: hello_world.py
 
     #!/usr/bin/env python3
 
     print("Hello, World!")
 
 .. code-block:: yaml
-    :caption: hello-world/1.0/specifications.yaml
-
-    build_specifications:
+    :caption: specs.yaml
 
-      x86_64:
-        podman:
-          fedora:
-            dependencies:
-              - fedora
-            variables:
-              fr: fakeroot
+    versions:
+      - spec: 1.0
+    dependencies:
+      - spec: fedora
+        when: distro=fedora
+    files:
+      - name: hello_world.py
 
 
 .. code-block:: text
-    :caption: hello-world/1.0/templates/fedora.vtmp
+    :caption: default.vtmp
 
     @from
-        %(__base__)
+        {{ __base__ }}
 
     @copy
-        hello_world.py /hello_world.py
+        hello_world.py /hello_world
+
+    @run
+        dnf -y install python3
+        chmod +x /hello_world
 
     @entry
-        /hello_world.py
+        /hello_world
 
-    @label
-        velocity.image.%(__name__)__%(__tag__) %(__hash__)
 
 .. code-block:: bash
 
     user@hostname:~$ velocity avail
-    ==> System: x86_64
-    ==> Backend: podman
-    ==> Distro: fedora
-
     ==> fedora
-            38
-            39
-            40
-            41
+        38
+        39
+        40
+        41
     ==> hello-world
-            1.0
+        1.0
 
 .. code-block:: bash
 
     user@hostname:~$ velocity build hello-world -v
-    ==> System: x86_64
-    ==> Backend: podman
-    ==> Distro: fedora
-
     ==> Build Order:
-            fedora@=41
-            hello-world@=1.0
-
-    ==> wmrxxohy: BUILD fedora@=41 ...
-    ==> wmrxxohy: GENERATING SCRIPT ...
-            SCRIPT: /tmp/velocity/build/wmrxxohy/script
-            FROM docker.io/fedora:41
-
-            RUN dnf -y upgrade
-
-            LABEL velocity.config.system="x86_64" \
-                velocity.config.backend="podman" \
-                velocity.config.distro="fedora" \
-                velocity.image.fedora__41="1ad7926d7e542fa521fe4a2eca54aa73caea82958b1f07adf04728b5762063ac"
-
-    ==> wmrxxohy: BUILDING ...
-            #!/usr/bin/env bash
-            podman build -f /tmp/velocity/build/wmrxxohy/script -t localhost/wmrxxohy:latest .;
-            STEP 1/3: FROM docker.io/fedora:41
-            STEP 2/3: RUN dnf -y upgrade
-            Fedora rawhide openh264 (From Cisco) - x86_64    59  B/s | 123  B     00:02
-            Fedora - Rawhide - Developmental packages for t 3.1 MB/s |  20 MB     00:06
-            Dependencies resolved.
-            ======================================================================================
-             Package                             Arch    Version                    Repo      Size
-            ======================================================================================
-            Upgrading:
-             audit-libs                          x86_64  4.0.1-1.fc41               rawhide  126 k
-             authselect                          x86_64  1.5.0-5.fc41               rawhide  146 k
-             authselect-libs                     x86_64  1.5.0-5.fc41               rawhide  219 k
-             crypto-policies                     noarch  20240320-1.git58e3d95.fc41 rawhide   91 k
-             curl                                x86_64  8.6.0-7.fc41               rawhide  301 k
-             dnf                                 noarch  4.19.2-1.fc41              rawhide  503 k
-             dnf-data                            noarch  4.19.2-1.fc41              rawhide   40 k
-             elfutils-default-yama-scope         noarch  0.191-5.fc41               rawhide   13 k
-             elfutils-libelf                     x86_64  0.191-5.fc41               rawhide  209 k
-             elfutils-libs                       x86_64  0.191-5.fc41               rawhide  258 k
-             expat                               x86_64  2.6.2-1.fc41               rawhide  113 k
-             fedora-release-common               noarch  41-0.6                     rawhide   21 k
-             fedora-release-container            noarch  41-0.6                     rawhide   11 k
-             fedora-release-identity-container   noarch  41-0.6                     rawhide   12 k
-             glib2                               x86_64  2.80.0-1.fc41              rawhide  3.0 M
-             glibc                               x86_64  2.39.9000-10.fc41          rawhide  2.2 M
-             glibc-common                        x86_64  2.39.9000-10.fc41          rawhide  393 k
-             glibc-minimal-langpack              x86_64  2.39.9000-10.fc41          rawhide  106 k
-             gmp                                 x86_64  1:6.3.0-1.fc41             rawhide  317 k
-             gnupg2                              x86_64  2.4.5-1.fc41               rawhide  2.7 M
-             gnutls                              x86_64  3.8.4-1.fc41               rawhide  1.1 M
-             libassuan                           x86_64  2.5.7-1.fc41               rawhide   67 k
-             libblkid                            x86_64  2.40-0.12.fc41             rawhide  125 k
-             libcurl                             x86_64  8.6.0-7.fc41               rawhide  345 k
-             libdnf                              x86_64  0.73.1-1.fc41              rawhide  697 k
-             libeconf                            x86_64  0.6.2-1.fc41               rawhide   32 k
-             libffi                              x86_64  3.4.6-1.fc41               rawhide   40 k
-             libgcc                              x86_64  14.0.1-0.13.fc41           rawhide  123 k
-             libgcrypt                           x86_64  1.10.3-4.fc41              rawhide  504 k
-             libgomp                             x86_64  14.0.1-0.13.fc41           rawhide  344 k
-             libgpg-error                        x86_64  1.48-1.fc41                rawhide  232 k
-             libksba                             x86_64  1.6.6-1.fc41               rawhide  159 k
-             libmodulemd                         x86_64  2.15.0-9.fc41              rawhide  233 k
-             libmount                            x86_64  2.40-0.12.fc41             rawhide  155 k
-             libnghttp2                          x86_64  1.60.0-2.fc41              rawhide   76 k
-             librepo                             x86_64  1.17.1-1.fc41              rawhide   99 k
-             libreport-filesystem                noarch  2.17.15-1.fc41             rawhide   14 k
-             libsmartcols                        x86_64  2.40-0.12.fc41             rawhide   84 k
-             libssh                              x86_64  0.10.6-6.fc41              rawhide  212 k
-             libssh-config                       noarch  0.10.6-6.fc41              rawhide  9.1 k
-             libstdc++                           x86_64  14.0.1-0.13.fc41           rawhide  881 k
-             libtirpc                            x86_64  1.3.4-1.rc3.fc41           rawhide   92 k
-             libunistring                        x86_64  1.1-7.fc41                 rawhide  545 k
-             libuuid                             x86_64  2.40-0.12.fc41             rawhide   29 k
-             libxml2                             x86_64  2.12.6-1.fc41              rawhide  686 k
-             libzstd                             x86_64  1.5.6-1.fc41               rawhide  309 k
-             npth                                x86_64  1.7-1.fc41                 rawhide   25 k
-             openssl-libs                        x86_64  1:3.2.1-3.fc41             rawhide  2.3 M
-             pcre2                               x86_64  10.43-1.fc41               rawhide  242 k
-             pcre2-syntax                        noarch  10.43-1.fc41               rawhide  149 k
-             python-pip-wheel                    noarch  24.0-2.fc41                rawhide  1.5 M
-             python3                             x86_64  3.12.2-3.fc41              rawhide   27 k
-             python3-dnf                         noarch  4.19.2-1.fc41              rawhide  594 k
-             python3-hawkey                      x86_64  0.73.1-1.fc41              rawhide  105 k
-             python3-libdnf                      x86_64  0.73.1-1.fc41              rawhide  847 k
-             python3-libs                        x86_64  3.12.2-3.fc41              rawhide  9.1 M
-             shadow-utils                        x86_64  2:4.15.1-2.fc41            rawhide  1.3 M
-             sqlite-libs                         x86_64  3.45.2-1.fc41              rawhide  706 k
-             systemd-libs                        x86_64  255.4-1.fc41               rawhide  708 k
-             tzdata                              noarch  2024a-4.fc41               rawhide  716 k
-             util-linux-core                     x86_64  2.40-0.12.fc41             rawhide  537 k
-             vim-data                            noarch  2:9.1.181-1.fc41           rawhide   23 k
-             vim-minimal                         x86_64  2:9.1.181-1.fc41           rawhide  807 k
-             xz-libs                             x86_64  1:5.4.6-3.fc41             rawhide  110 k
-             yum                                 noarch  4.19.2-1.fc41              rawhide   37 k
-
-            Transaction Summary
-            ======================================================================================
-            Upgrade  65 Packages
-
-            Total download size: 38 M
-            Downloading Packages:
-            (1/65): audit-libs-4.0.1-1.fc41.x86_64.rpm      136 kB/s | 126 kB     00:00
-            (2/65): authselect-1.5.0-5.fc41.x86_64.rpm      153 kB/s | 146 kB     00:00
-            (3/65): crypto-policies-20240320-1.git58e3d95.f 623 kB/s |  91 kB     00:00
-            (4/65): authselect-libs-1.5.0-5.fc41.x86_64.rpm 199 kB/s | 219 kB     00:01
-            [MIRROR] dnf-4.19.2-1.fc41.noarch.rpm: Status code: 404 for http://mirror.math.princeton.edu/pub/fedora/linux/development/rawhide/Everything/x86_64/os/Packages/d/dnf-4.19.2-1.fc41.noarch.rpm (IP: 128.112.18.21)
-            [MIRROR] dnf-data-4.19.2-1.fc41.noarch.rpm: Status code: 404 for http://mirror.math.princeton.edu/pub/fedora/linux/development/rawhide/Everything/x86_64/os/Packages/d/dnf-data-4.19.2-1.fc41.noarch.rpm (IP: 128.112.18.21)
-            (5/65): curl-8.6.0-7.fc41.x86_64.rpm            919 kB/s | 301 kB     00:00
-            (6/65): elfutils-default-yama-scope-0.191-5.fc4 105 kB/s |  13 kB     00:00
-            (7/65): elfutils-libelf-0.191-5.fc41.x86_64.rpm 739 kB/s | 209 kB     00:00
-            (8/65): dnf-data-4.19.2-1.fc41.noarch.rpm        51 kB/s |  40 kB     00:00
-            (9/65): elfutils-libs-0.191-5.fc41.x86_64.rpm   980 kB/s | 258 kB     00:00
-            (10/65): expat-2.6.2-1.fc41.x86_64.rpm          787 kB/s | 113 kB     00:00
-            (11/65): fedora-release-common-41-0.6.noarch.rp 165 kB/s |  21 kB     00:00
-            (12/65): fedora-release-container-41-0.6.noarch  87 kB/s |  11 kB     00:00
-            (13/65): fedora-release-identity-container-41-0  77 kB/s |  12 kB     00:00
-            (14/65): dnf-4.19.2-1.fc41.noarch.rpm           402 kB/s | 503 kB     00:01
-            (15/65): glib2-2.80.0-1.fc41.x86_64.rpm         4.8 MB/s | 3.0 MB     00:00
-            (16/65): glibc-minimal-langpack-2.39.9000-10.fc 783 kB/s | 106 kB     00:00
-            (17/65): gmp-6.3.0-1.fc41.x86_64.rpm            1.7 MB/s | 317 kB     00:00
-            (18/65): glibc-common-2.39.9000-10.fc41.x86_64. 507 kB/s | 393 kB     00:00
-            (19/65): gnupg2-2.4.5-1.fc41.x86_64.rpm         8.2 MB/s | 2.7 MB     00:00
-            (20/65): libassuan-2.5.7-1.fc41.x86_64.rpm      458 kB/s |  67 kB     00:00
-            (21/65): libblkid-2.40-0.12.fc41.x86_64.rpm     687 kB/s | 125 kB     00:00
-            (22/65): glibc-2.39.9000-10.fc41.x86_64.rpm     1.0 MB/s | 2.2 MB     00:02
-            [MIRROR] libdnf-0.73.1-1.fc41.x86_64.rpm: Status code: 404 for http://mirror.math.princeton.edu/pub/fedora/linux/development/rawhide/Everything/x86_64/os/Packages/l/libdnf-0.73.1-1.fc41.x86_64.rpm (IP: 128.112.18.21)
-            (23/65): gnutls-3.8.4-1.fc41.x86_64.rpm         668 kB/s | 1.1 MB     00:01
-            (24/65): libeconf-0.6.2-1.fc41.x86_64.rpm       249 kB/s |  32 kB     00:00
-            (25/65): libdnf-0.73.1-1.fc41.x86_64.rpm        1.6 MB/s | 697 kB     00:00
-            (26/65): libffi-3.4.6-1.fc41.x86_64.rpm         205 kB/s |  40 kB     00:00
-            (27/65): libgcc-14.0.1-0.13.fc41.x86_64.rpm     391 kB/s | 123 kB     00:00
-            (28/65): libgomp-14.0.1-0.13.fc41.x86_64.rpm    642 kB/s | 344 kB     00:00
-            (29/65): libgcrypt-1.10.3-4.fc41.x86_64.rpm     613 kB/s | 504 kB     00:00
-            (30/65): libgpg-error-1.48-1.fc41.x86_64.rpm    579 kB/s | 232 kB     00:00
-            (31/65): libksba-1.6.6-1.fc41.x86_64.rpm        580 kB/s | 159 kB     00:00
-            (32/65): libcurl-8.6.0-7.fc41.x86_64.rpm        140 kB/s | 345 kB     00:02
-            (33/65): libmodulemd-2.15.0-9.fc41.x86_64.rpm   406 kB/s | 233 kB     00:00
-            (34/65): libmount-2.40-0.12.fc41.x86_64.rpm     271 kB/s | 155 kB     00:00
-            (35/65): libreport-filesystem-2.17.15-1.fc41.no  82 kB/s |  14 kB     00:00
-            (36/65): librepo-1.17.1-1.fc41.x86_64.rpm       501 kB/s |  99 kB     00:00
-            (37/65): libsmartcols-2.40-0.12.fc41.x86_64.rpm 323 kB/s |  84 kB     00:00
-            (38/65): libssh-0.10.6-6.fc41.x86_64.rpm        744 kB/s | 212 kB     00:00
-            (39/65): libssh-config-0.10.6-6.fc41.noarch.rpm  74 kB/s | 9.1 kB     00:00
-            (40/65): libtirpc-1.3.4-1.rc3.fc41.x86_64.rpm   357 kB/s |  92 kB     00:00
-            (41/65): libstdc++-14.0.1-0.13.fc41.x86_64.rpm  837 kB/s | 881 kB     00:01
-            (42/65): libnghttp2-1.60.0-2.fc41.x86_64.rpm     35 kB/s |  76 kB     00:02
-            (43/65): libuuid-2.40-0.12.fc41.x86_64.rpm      208 kB/s |  29 kB     00:00
-            (44/65): libunistring-1.1-7.fc41.x86_64.rpm     534 kB/s | 545 kB     00:01
-            (45/65): npth-1.7-1.fc41.x86_64.rpm             187 kB/s |  25 kB     00:00
-            (46/65): libzstd-1.5.6-1.fc41.x86_64.rpm        767 kB/s | 309 kB     00:00
-            (47/65): pcre2-10.43-1.fc41.x86_64.rpm          611 kB/s | 242 kB     00:00
-            (48/65): pcre2-syntax-10.43-1.fc41.noarch.rpm   386 kB/s | 149 kB     00:00
-            (49/65): python-pip-wheel-24.0-2.fc41.noarch.rp 640 kB/s | 1.5 MB     00:02
-            (50/65): python3-3.12.2-3.fc41.x86_64.rpm       203 kB/s |  27 kB     00:00
-            [MIRROR] python3-dnf-4.19.2-1.fc41.noarch.rpm: Status code: 404 for http://mirror.math.princeton.edu/pub/fedora/linux/development/rawhide/Everything/x86_64/os/Packages/p/python3-dnf-4.19.2-1.fc41.noarch.rpm (IP: 128.112.18.21)
-            (51/65): libxml2-2.12.6-1.fc41.x86_64.rpm       168 kB/s | 686 kB     00:04
-            (52/65): openssl-libs-3.2.1-3.fc41.x86_64.rpm   554 kB/s | 2.3 MB     00:04
-            (53/65): python3-hawkey-0.73.1-1.fc41.x86_64.rp 130 kB/s | 105 kB     00:00
-            (54/65): python3-dnf-4.19.2-1.fc41.noarch.rpm   425 kB/s | 594 kB     00:01
-            (55/65): shadow-utils-4.15.1-2.fc41.x86_64.rpm  3.5 MB/s | 1.3 MB     00:00
-            (56/65): sqlite-libs-3.45.2-1.fc41.x86_64.rpm   2.8 MB/s | 706 kB     00:00
-            (57/65): python3-libdnf-0.73.1-1.fc41.x86_64.rp 678 kB/s | 847 kB     00:01
-            (58/65): systemd-libs-255.4-1.fc41.x86_64.rpm   2.9 MB/s | 708 kB     00:00
-            (59/65): util-linux-core-2.40-0.12.fc41.x86_64. 3.0 MB/s | 537 kB     00:00
-            (60/65): tzdata-2024a-4.fc41.noarch.rpm         1.5 MB/s | 716 kB     00:00
-            (61/65): vim-data-9.1.181-1.fc41.noarch.rpm     125 kB/s |  23 kB     00:00
-            (62/65): xz-libs-5.4.6-3.fc41.x86_64.rpm        530 kB/s | 110 kB     00:00
-            (63/65): yum-4.19.2-1.fc41.noarch.rpm           215 kB/s |  37 kB     00:00
-            (64/65): python3-libs-3.12.2-3.fc41.x86_64.rpm  3.5 MB/s | 9.1 MB     00:02
-            (65/65): vim-minimal-9.1.181-1.fc41.x86_64.rpm  218 kB/s | 807 kB     00:03
-            --------------------------------------------------------------------------------
-            Total                                           2.0 MB/s |  38 MB     00:19
-            Running transaction check
-            Transaction check succeeded.
-            Running transaction test
-            Transaction test succeeded.
-            Running transaction
-              Preparing        :                                                        1/1
-              Upgrading        : libgcc-14.0.1-0.13.fc41.x86_64                       1/130
-              Running scriptlet: libgcc-14.0.1-0.13.fc41.x86_64                       1/130
-              Upgrading        : tzdata-2024a-4.fc41.noarch                           2/130
-              Upgrading        : crypto-policies-20240320-1.git58e3d95.fc41.noarc     3/130
-              Running scriptlet: crypto-policies-20240320-1.git58e3d95.fc41.noarc     3/130
-              Upgrading        : glibc-common-2.39.9000-10.fc41.x86_64                4/130
-              Upgrading        : glibc-minimal-langpack-2.39.9000-10.fc41.x86_64      5/130
-              Running scriptlet: glibc-2.39.9000-10.fc41.x86_64                       6/130
-              Upgrading        : glibc-2.39.9000-10.fc41.x86_64                       6/130
-              Running scriptlet: glibc-2.39.9000-10.fc41.x86_64                       6/130
-              Upgrading        : libgpg-error-1.48-1.fc41.x86_64                      7/130
-              Upgrading        : libuuid-2.40-0.12.fc41.x86_64                        8/130
-              Upgrading        : openssl-libs-1:3.2.1-3.fc41.x86_64                   9/130
-              Upgrading        : xz-libs-1:5.4.6-3.fc41.x86_64                       10/130
-              Upgrading        : libsmartcols-2.40-0.12.fc41.x86_64                  11/130
-              Upgrading        : libstdc++-14.0.1-0.13.fc41.x86_64                   12/130
-              Upgrading        : libzstd-1.5.6-1.fc41.x86_64                         13/130
-              Upgrading        : sqlite-libs-3.45.2-1.fc41.x86_64                    14/130
-              Upgrading        : libblkid-2.40-0.12.fc41.x86_64                      15/130
-              Upgrading        : libmount-2.40-0.12.fc41.x86_64                      16/130
-              Upgrading        : libffi-3.4.6-1.fc41.x86_64                          17/130
-              Upgrading        : fedora-release-identity-container-41-0.6.noarch     18/130
-              Upgrading        : fedora-release-container-41-0.6.noarch              19/130
-              Upgrading        : fedora-release-common-41-0.6.noarch                 20/130
-              Upgrading        : elfutils-libelf-0.191-5.fc41.x86_64                 21/130
-              Upgrading        : systemd-libs-255.4-1.fc41.x86_64                    22/130
-              Upgrading        : libxml2-2.12.6-1.fc41.x86_64                        23/130
-              Upgrading        : libassuan-2.5.7-1.fc41.x86_64                       24/130
-              Upgrading        : libgcrypt-1.10.3-4.fc41.x86_64                      25/130
-              Upgrading        : libksba-1.6.6-1.fc41.x86_64                         26/130
-              Upgrading        : audit-libs-4.0.1-1.fc41.x86_64                      27/130
-              Upgrading        : authselect-libs-1.5.0-5.fc41.x86_64                 28/130
-              Upgrading        : expat-2.6.2-1.fc41.x86_64                           29/130
-              Upgrading        : gmp-1:6.3.0-1.fc41.x86_64                           30/130
-              Upgrading        : libeconf-0.6.2-1.fc41.x86_64                        31/130
-              Upgrading        : libnghttp2-1.60.0-2.fc41.x86_64                     32/130
-              Upgrading        : libtirpc-1.3.4-1.rc3.fc41.x86_64                    33/130
-              Upgrading        : libunistring-1.1-7.fc41.x86_64                      34/130
-              Upgrading        : gnutls-3.8.4-1.fc41.x86_64                          35/130
-              Upgrading        : npth-1.7-1.fc41.x86_64                              36/130
-              Upgrading        : vim-data-2:9.1.181-1.fc41.noarch                    37/130
-              Upgrading        : python-pip-wheel-24.0-2.fc41.noarch                 38/130
-              Upgrading        : python3-3.12.2-3.fc41.x86_64                        39/130
-              Upgrading        : python3-libs-3.12.2-3.fc41.x86_64                   40/130
-              Upgrading        : pcre2-syntax-10.43-1.fc41.noarch                    41/130
-              Upgrading        : pcre2-10.43-1.fc41.x86_64                           42/130
-              Upgrading        : glib2-2.80.0-1.fc41.x86_64                          43/130
-              Upgrading        : libmodulemd-2.15.0-9.fc41.x86_64                    44/130
-              Upgrading        : libssh-config-0.10.6-6.fc41.noarch                  45/130
-              Upgrading        : libssh-0.10.6-6.fc41.x86_64                         46/130
-              Upgrading        : libcurl-8.6.0-7.fc41.x86_64                         47/130
-              Upgrading        : librepo-1.17.1-1.fc41.x86_64                        48/130
-              Upgrading        : libdnf-0.73.1-1.fc41.x86_64                         49/130
-              Upgrading        : python3-libdnf-0.73.1-1.fc41.x86_64                 50/130
-              Upgrading        : python3-hawkey-0.73.1-1.fc41.x86_64                 51/130
-              Upgrading        : libreport-filesystem-2.17.15-1.fc41.noarch          52/130
-              Upgrading        : dnf-data-4.19.2-1.fc41.noarch                       53/130
-              Upgrading        : python3-dnf-4.19.2-1.fc41.noarch                    54/130
-              Upgrading        : dnf-4.19.2-1.fc41.noarch                            55/130
-              Running scriptlet: dnf-4.19.2-1.fc41.noarch                            55/130
-              Upgrading        : elfutils-default-yama-scope-0.191-5.fc41.noarch     56/130
-              Running scriptlet: elfutils-default-yama-scope-0.191-5.fc41.noarch     56/130
-              Upgrading        : elfutils-libs-0.191-5.fc41.x86_64                   57/130
-              Upgrading        : yum-4.19.2-1.fc41.noarch                            58/130
-              Upgrading        : curl-8.6.0-7.fc41.x86_64                            59/130
-              Upgrading        : vim-minimal-2:9.1.181-1.fc41.x86_64                 60/130
-              Upgrading        : gnupg2-2.4.5-1.fc41.x86_64                          61/130
-              Upgrading        : shadow-utils-2:4.15.1-2.fc41.x86_64                 62/130
-              Upgrading        : authselect-1.5.0-5.fc41.x86_64                      63/130
-              Upgrading        : util-linux-core-2.40-0.12.fc41.x86_64               64/130
-              Upgrading        : libgomp-14.0.1-0.13.fc41.x86_64                     65/130
-              Cleanup          : util-linux-core-2.40-0.9.rc1.fc41.x86_64            66/130
-              Cleanup          : systemd-libs-255.3-1.fc40.x86_64                    67/130
-              Cleanup          : gnupg2-2.4.4-1.fc40.x86_64                          68/130
-              Cleanup          : elfutils-libs-0.190-6.fc40.x86_64                   69/130
-              Cleanup          : shadow-utils-2:4.14.0-6.fc40.x86_64                 70/130
-              Cleanup          : vim-minimal-2:9.1.113-1.fc41.x86_64                 71/130
-              Running scriptlet: authselect-1.5.0-3.fc40.x86_64                      72/130
-              Cleanup          : authselect-1.5.0-3.fc40.x86_64                      72/130
-              Cleanup          : curl-8.6.0-6.fc40.x86_64                            73/130
-              Cleanup          : fedora-release-common-41-0.1.noarch                 74/130
-              Cleanup          : libgcrypt-1.10.3-3.fc40.x86_64                      75/130
-              Cleanup          : elfutils-libelf-0.190-6.fc40.x86_64                 76/130
-              Cleanup          : libassuan-2.5.6-4.fc40.x86_64                       77/130
-              Cleanup          : authselect-libs-1.5.0-3.fc40.x86_64                 78/130
-              Cleanup          : audit-libs-4.0-8.fc40.x86_64                        79/130
-              Cleanup          : libksba-1.6.5-3.fc40.x86_64                         80/130
-              Cleanup          : libgpg-error-1.47-4.fc40.x86_64                     81/130
-              Cleanup          : libeconf-0.5.2-3.fc40.x86_64                        82/130
-              Cleanup          : libgomp-14.0.1-0.6.fc40.x86_64                      83/130
-              Cleanup          : fedora-release-container-41-0.1.noarch              84/130
-              Cleanup          : yum-4.19.0-1.fc40.noarch                            85/130
-              Cleanup          : libzstd-1.5.5-5.fc40.x86_64                         86/130
-              Cleanup          : npth-1.6-18.fc40.x86_64                             87/130
-              Running scriptlet: dnf-4.19.0-1.fc40.noarch                            88/130
-              Cleanup          : dnf-4.19.0-1.fc40.noarch                            88/130
-              Running scriptlet: dnf-4.19.0-1.fc40.noarch                            88/130
-              Cleanup          : python3-dnf-4.19.0-1.fc40.noarch                    89/130
-              Cleanup          : dnf-data-4.19.0-1.fc40.noarch                       90/130
-              Cleanup          : libreport-filesystem-2.17.14-1.fc40.noarch          91/130
-              Cleanup          : fedora-release-identity-container-41-0.1.noarch     92/130
-              Cleanup          : vim-data-2:9.1.113-1.fc41.noarch                    93/130
-              Cleanup          : elfutils-default-yama-scope-0.190-6.fc40.noarch     94/130
-              Cleanup          : python3-hawkey-0.73.0-1.fc40.x86_64                 95/130
-              Cleanup          : python3-libdnf-0.73.0-1.fc40.x86_64                 96/130
-              Cleanup          : python3-libs-3.12.2-1.fc40.x86_64                   97/130
-              Cleanup          : python3-3.12.2-1.fc40.x86_64                        98/130
-              Cleanup          : libdnf-0.73.0-1.fc40.x86_64                         99/130
-              Cleanup          : python-pip-wheel-23.3.2-1.fc40.noarch              100/130
-              Cleanup          : libstdc++-14.0.1-0.6.fc40.x86_64                   101/130
-              Cleanup          : librepo-1.17.0-3.fc40.x86_64                       102/130
-              Cleanup          : libcurl-8.6.0-6.fc40.x86_64                        103/130
-              Cleanup          : libxml2-2.12.5-1.fc40.x86_64                       104/130
-              Cleanup          : libssh-0.10.6-4.fc40.x86_64                        105/130
-              Cleanup          : openssl-libs-1:3.2.1-2.fc40.x86_64                 106/130
-              Cleanup          : sqlite-libs-3.45.1-2.fc40.x86_64                   107/130
-              Cleanup          : libtirpc-1.3.4-1.rc2.fc40.2.x86_64                 108/130
-              Cleanup          : libmodulemd-2.15.0-8.fc40.x86_64                   109/130
-              Cleanup          : glib2-2.79.1-1.fc40.x86_64                         110/130
-              Cleanup          : libmount-2.40-0.9.rc1.fc41.x86_64                  111/130
-              Cleanup          : gnutls-3.8.3-2.fc40.x86_64                         112/130
-              Cleanup          : libblkid-2.40-0.9.rc1.fc41.x86_64                  113/130
-              Cleanup          : libuuid-2.40-0.9.rc1.fc41.x86_64                   114/130
-              Cleanup          : xz-libs-5.4.6-1.fc40.x86_64                        115/130
-              Cleanup          : libsmartcols-2.40-0.9.rc1.fc41.x86_64              116/130
-              Cleanup          : expat-2.6.0-1.fc41.x86_64                          117/130
-              Cleanup          : gmp-1:6.2.1-8.fc40.x86_64                          118/130
-              Cleanup          : libunistring-1.1-7.fc40.x86_64                     119/130
-              Cleanup          : libffi-3.4.4-7.fc40.x86_64                         120/130
-              Cleanup          : pcre2-10.42-2.fc40.2.x86_64                        121/130
-              Cleanup          : libnghttp2-1.59.0-2.fc40.x86_64                    122/130
-              Cleanup          : pcre2-syntax-10.42-2.fc40.2.noarch                 123/130
-              Cleanup          : crypto-policies-20240201-1.git9f501f3.fc40.noarc   124/130
-              Cleanup          : libssh-config-0.10.6-4.fc40.noarch                 125/130
-              Cleanup          : glibc-2.39.9000-1.fc41.x86_64                      126/130
-              Cleanup          : glibc-minimal-langpack-2.39.9000-1.fc41.x86_64     127/130
-              Cleanup          : glibc-common-2.39.9000-1.fc41.x86_64               128/130
-              Cleanup          : tzdata-2024a-2.fc40.noarch                         129/130
-              Cleanup          : libgcc-14.0.1-0.6.fc40.x86_64                      130/130
-              Running scriptlet: libgcc-14.0.1-0.6.fc40.x86_64                      130/130
-              Running scriptlet: authselect-libs-1.5.0-5.fc41.x86_64                130/130
-              Running scriptlet: libgcc-14.0.1-0.6.fc40.x86_64                      130/130
-
-            Upgraded:
-              audit-libs-4.0.1-1.fc41.x86_64
-              authselect-1.5.0-5.fc41.x86_64
-              authselect-libs-1.5.0-5.fc41.x86_64
-              crypto-policies-20240320-1.git58e3d95.fc41.noarch
-              curl-8.6.0-7.fc41.x86_64
-              dnf-4.19.2-1.fc41.noarch
-              dnf-data-4.19.2-1.fc41.noarch
-              elfutils-default-yama-scope-0.191-5.fc41.noarch
-              elfutils-libelf-0.191-5.fc41.x86_64
-              elfutils-libs-0.191-5.fc41.x86_64
-              expat-2.6.2-1.fc41.x86_64
-              fedora-release-common-41-0.6.noarch
-              fedora-release-container-41-0.6.noarch
-              fedora-release-identity-container-41-0.6.noarch
-              glib2-2.80.0-1.fc41.x86_64
-              glibc-2.39.9000-10.fc41.x86_64
-              glibc-common-2.39.9000-10.fc41.x86_64
-              glibc-minimal-langpack-2.39.9000-10.fc41.x86_64
-              gmp-1:6.3.0-1.fc41.x86_64
-              gnupg2-2.4.5-1.fc41.x86_64
-              gnutls-3.8.4-1.fc41.x86_64
-              libassuan-2.5.7-1.fc41.x86_64
-              libblkid-2.40-0.12.fc41.x86_64
-              libcurl-8.6.0-7.fc41.x86_64
-              libdnf-0.73.1-1.fc41.x86_64
-              libeconf-0.6.2-1.fc41.x86_64
-              libffi-3.4.6-1.fc41.x86_64
-              libgcc-14.0.1-0.13.fc41.x86_64
-              libgcrypt-1.10.3-4.fc41.x86_64
-              libgomp-14.0.1-0.13.fc41.x86_64
-              libgpg-error-1.48-1.fc41.x86_64
-              libksba-1.6.6-1.fc41.x86_64
-              libmodulemd-2.15.0-9.fc41.x86_64
-              libmount-2.40-0.12.fc41.x86_64
-              libnghttp2-1.60.0-2.fc41.x86_64
-              librepo-1.17.1-1.fc41.x86_64
-              libreport-filesystem-2.17.15-1.fc41.noarch
-              libsmartcols-2.40-0.12.fc41.x86_64
-              libssh-0.10.6-6.fc41.x86_64
-              libssh-config-0.10.6-6.fc41.noarch
-              libstdc++-14.0.1-0.13.fc41.x86_64
-              libtirpc-1.3.4-1.rc3.fc41.x86_64
-              libunistring-1.1-7.fc41.x86_64
-              libuuid-2.40-0.12.fc41.x86_64
-              libxml2-2.12.6-1.fc41.x86_64
-              libzstd-1.5.6-1.fc41.x86_64
-              npth-1.7-1.fc41.x86_64
-              openssl-libs-1:3.2.1-3.fc41.x86_64
-              pcre2-10.43-1.fc41.x86_64
-              pcre2-syntax-10.43-1.fc41.noarch
-              python-pip-wheel-24.0-2.fc41.noarch
-              python3-3.12.2-3.fc41.x86_64
-              python3-dnf-4.19.2-1.fc41.noarch
-              python3-hawkey-0.73.1-1.fc41.x86_64
-              python3-libdnf-0.73.1-1.fc41.x86_64
-              python3-libs-3.12.2-3.fc41.x86_64
-              shadow-utils-2:4.15.1-2.fc41.x86_64
-              sqlite-libs-3.45.2-1.fc41.x86_64
-              systemd-libs-255.4-1.fc41.x86_64
-              tzdata-2024a-4.fc41.noarch
-              util-linux-core-2.40-0.12.fc41.x86_64
-              vim-data-2:9.1.181-1.fc41.noarch
-              vim-minimal-2:9.1.181-1.fc41.x86_64
-              xz-libs-1:5.4.6-3.fc41.x86_64
-              yum-4.19.2-1.fc41.noarch
-
-            Complete!
-            --> 43089713ea9
-            STEP 3/3: LABEL velocity.config.system="x86_64"     velocity.config.backend="podman"     velocity.config.distro="fedora"     velocity.image.fedora__41="1ad7926d7e542fa521fe4a2eca54aa73caea82958b1f07adf04728b5762063ac"
-            COMMIT localhost/wmrxxohy:latest
-            --> 49321c240b5
-            Successfully tagged localhost/wmrxxohy:latest
-            49321c240b522a0d66cd30b62addc99e87b5861e2e6c27f6d0136968c73be5aa
-    ==> wmrxxohy: IMAGE localhost/wmrxxohy:latest (fedora@=41) BUILT [0:01:02]
-
-    ==> bdvdbcor: BUILD hello-world@=1.0 ...
-    ==> bdvdbcor: COPYING FILES ...
-            FILE: /home/xjv/tmp/hello-world/1.0/x86_64/hello_world.py -> /tmp/velocity/build/bdvdbcor/hello_world.py
-    ==> bdvdbcor: GENERATING SCRIPT ...
-            SCRIPT: /tmp/velocity/build/bdvdbcor/script
-            FROM localhost/wmrxxohy:latest
-
-            COPY hello_world.py /hello_world.py
-
-            LABEL velocity.image.hello-world__1.0="1b080f458c34ae2759d1eb3e8464d3d508e3bcb981a476f70709b0f20b6218bb"
-
-            ENTRYPOINT ['/hello_world.py']
-
-    ==> bdvdbcor: BUILDING ...
-            #!/usr/bin/env bash
-            podman build -f /tmp/velocity/build/bdvdbcor/script -t localhost/hello-world__1.0__x86_64__fedora:latest .;
-            STEP 1/4: FROM localhost/wmrxxohy:latest
-            STEP 2/4: COPY hello_world.py /hello_world.py
-            --> fa1896e8689
-            STEP 3/4: LABEL velocity.image.hello-world__1.0="1b080f458c34ae2759d1eb3e8464d3d508e3bcb981a476f70709b0f20b6218bb"
-            --> d58637575df
-            STEP 4/4: ENTRYPOINT ['/hello_world.py']
-            COMMIT localhost/hello-world__1.0__x86_64__fedora:latest
-            --> 21211d9de40
-            Successfully tagged localhost/hello-world__1.0__x86_64__fedora:latest
-            21211d9de40aa6c0cb6b625e6f4fed265c88f9a4be09c4edcd93a78360580ecf
-    ==> bdvdbcor: IMAGE localhost/hello-world__1.0__x86_64__fedora:latest (hello-world@=1.0) BUILT [0:00:03]
+        fedora@41-8a9a360
+        hello-world@1.0-de9c02b
+
+    ==> 8a9a360: BUILD fedora@41 ...
+    ==> 8a9a360: GENERATING SCRIPT ...
+        SCRIPT: /tmp/velocity/build/fedora-41-8a9a360/script
+        Bootstrap: docker
+        From: docker.io/fedora:41
+
+        %post
+        dnf -y upgrade
+        dnf clean all
+    ==> 8a9a360: BUILDING ...
+        #!/usr/bin/env bash
+        apptainer build --disable-cache /tmp/velocity/build/fedora-41-8a9a360/8a9a360.sif /tmp/velocity/build/fedora-41-8a9a360/script;
+        Updating and loading repositories:
+         Fedora 41 openh264 (From Cisco) - x86_ 100% |   6.5 KiB/s |   4.8 KiB |  00m01s
+         Fedora 41 - x86_64 - Test Updates      100% |   1.8 MiB/s |   3.4 MiB |  00m02s
+         Fedora 41 - x86_64                     100% |  13.9 MiB/s |  35.9 MiB |  00m03s
+         Fedora 41 - x86_64 - Updates           100% |  50.3 KiB/s |  31.9 KiB |  00m01s
+        Repositories loaded.
+        Package                     Arch   Version        Repository                            Size
+        Upgrading:
+         libgcc                     x86_64 14.2.1-3.fc41  updates-testing                  274.6 KiB
+           replacing libgcc         x86_64 14.2.1-1.fc41  34086d2996104518800c8d7dcc6139a1 274.6 KiB
+         libgomp                    x86_64 14.2.1-3.fc41  updates-testing                  523.5 KiB
+           replacing libgomp        x86_64 14.2.1-1.fc41  34086d2996104518800c8d7dcc6139a1 523.4 KiB
+         libstdc++                  x86_64 14.2.1-3.fc41  updates-testing                    2.8 MiB
+           replacing libstdc++      x86_64 14.2.1-1.fc41  34086d2996104518800c8d7dcc6139a1   2.8 MiB
+         openssl-libs               x86_64 1:3.2.2-7.fc41 updates-testing                    7.8 MiB
+           replacing openssl-libs   x86_64 1:3.2.2-5.fc41 34086d2996104518800c8d7dcc6139a1   7.8 MiB
+         rpm                        x86_64 4.19.94-1.fc41 updates-testing                    3.1 MiB
+           replacing rpm            x86_64 4.19.92-6.fc41 34086d2996104518800c8d7dcc6139a1   3.1 MiB
+         rpm-build-libs             x86_64 4.19.94-1.fc41 updates-testing                  206.7 KiB
+           replacing rpm-build-libs x86_64 4.19.92-6.fc41 34086d2996104518800c8d7dcc6139a1 206.7 KiB
+         rpm-libs                   x86_64 4.19.94-1.fc41 updates-testing                  721.9 KiB
+           replacing rpm-libs       x86_64 4.19.92-6.fc41 34086d2996104518800c8d7dcc6139a1 721.9 KiB
+         systemd-libs               x86_64 256.6-1.fc41   updates-testing                    2.0 MiB
+           replacing systemd-libs   x86_64 256.5-1.fc41   34086d2996104518800c8d7dcc6139a1   2.0 MiB
+         zlib-ng-compat             x86_64 2.1.7-3.fc41   updates-testing                  134.0 KiB
+           replacing zlib-ng-compat x86_64 2.1.7-2.fc41   34086d2996104518800c8d7dcc6139a1 134.0 KiB
+
+        Transaction Summary:
+         Upgrading:         9 packages
+         Replacing:         9 packages
+
+        Total size of inbound packages is 5 MiB. Need to download 5 MiB.
+        After this operation 2 KiB will be used (install 17 MiB, remove 17 MiB).
+        [1/9] libgcc-0:14.2.1-3.fc41.x86_64     100% | 132.2 KiB/s | 133.3 KiB |  00m01s
+        [2/9] libstdc++-0:14.2.1-3.fc41.x86_64  100% | 583.3 KiB/s | 887.8 KiB |  00m02s
+        [3/9] libgomp-0:14.2.1-3.fc41.x86_64    100% | 208.5 KiB/s | 354.1 KiB |  00m02s
+        [4/9] rpm-0:4.19.94-1.fc41.x86_64       100% |   1.6 MiB/s | 547.6 KiB |  00m00s
+        [5/9] rpm-build-libs-0:4.19.94-1.fc41.x 100% |   2.1 MiB/s |  99.1 KiB |  00m00s
+        [6/9] openssl-libs-1:3.2.2-7.fc41.x86_6 100% |   2.6 MiB/s |   2.3 MiB |  00m01s
+        [7/9] rpm-libs-0:4.19.94-1.fc41.x86_64  100% |   1.1 MiB/s | 309.5 KiB |  00m00s
+        [8/9] zlib-ng-compat-0:2.1.7-3.fc41.x86 100% |   1.0 MiB/s |  77.7 KiB |  00m00s
+        [9/9] systemd-libs-0:256.6-1.fc41.x86_6 100% |   2.6 MiB/s | 730.9 KiB |  00m00s
+        --------------------------------------------------------------------------------
+        [9/9] Total                             100% |   2.2 MiB/s |   5.4 MiB |  00m02s
+        Running transaction
+        [ 1/20] Verify package files            100% | 750.0   B/s |   9.0   B |  00m00s
+        [ 2/20] Prepare transaction             100% |   1.6 KiB/s |  18.0   B |  00m00s
+        [ 3/20] Upgrading libgcc-0:14.2.1-3.fc4 100% |  14.2 MiB/s | 276.3 KiB |  00m00s
+        >>> Running post-install scriptlet: libgcc-0:14.2.1-3.fc41.x86_64
+        >>> Stop post-install scriptlet: libgcc-0:14.2.1-3.fc41.x86_64
+        [ 4/20] Upgrading zlib-ng-compat-0:2.1. 100% |  32.9 MiB/s | 134.8 KiB |  00m00s
+        [ 5/20] Upgrading rpm-libs-0:4.19.94-1. 100% | 117.7 MiB/s | 723.4 KiB |  00m00s
+        [ 6/20] Upgrading libgomp-0:14.2.1-3.fc 100% | 170.8 MiB/s | 524.8 KiB |  00m00s
+        [ 7/20] Upgrading rpm-build-libs-0:4.19 100% |  15.6 MiB/s | 207.5 KiB |  00m00s
+        >>> Running pre-install scriptlet: rpm-0:4.19.94-1.fc41.x86_64
+        >>> Stop pre-install scriptlet: rpm-0:4.19.94-1.fc41.x86_64
+        [ 8/20] Upgrading rpm-0:4.19.94-1.fc41. 100% | 104.3 MiB/s |   2.5 MiB |  00m00s
+        [ 9/20] Upgrading openssl-libs-1:3.2.2- 100% | 190.9 MiB/s |   7.8 MiB |  00m00s
+        [10/20] Upgrading libstdc++-0:14.2.1-3. 100% | 145.6 MiB/s |   2.8 MiB |  00m00s
+        [11/20] Upgrading systemd-libs-0:256.6- 100% | 135.3 MiB/s |   2.0 MiB |  00m00s
+        [12/20] Erasing rpm-build-libs-0:4.19.9 100% |   1.0 KiB/s |   5.0   B |  00m00s
+        [13/20] Erasing libstdc++-0:14.2.1-1.fc 100% |   6.1 KiB/s |  31.0   B |  00m00s
+        [14/20] Erasing systemd-libs-0:256.5-1. 100% |   2.4 KiB/s |  20.0   B |  00m00s
+        [15/20] Erasing rpm-0:4.19.92-6.fc41.x8 100% |  26.7 KiB/s | 273.0   B |  00m00s
+        [16/20] Erasing rpm-libs-0:4.19.92-6.fc 100% |   2.4 KiB/s |  10.0   B |  00m00s
+        [17/20] Erasing openssl-libs-1:3.2.2-5. 100% |   9.5 KiB/s |  39.0   B |  00m00s
+        [18/20] Erasing zlib-ng-compat-0:2.1.7- 100% |   1.2 KiB/s |   5.0   B |  00m00s
+        [19/20] Erasing libgcc-0:14.2.1-1.fc41. 100% | 647.0   B/s |  11.0   B |  00m00s
+        >>> Running post-uninstall scriptlet: libgcc-0:14.2.1-1.fc41.x86_64
+        >>> Stop post-uninstall scriptlet: libgcc-0:14.2.1-1.fc41.x86_64
+        [20/20] Erasing libgomp-0:14.2.1-1.fc41 100% |  43.0   B/s |   9.0   B |  00m00s
+        >>> Running post-transaction scriptlet: rpm-0:4.19.94-1.fc41.x86_64
+        >>> Stop post-transaction scriptlet: rpm-0:4.19.94-1.fc41.x86_64
+        >>> Running trigger-install scriptlet: glibc-common-0:2.40-3.fc41.x86_64
+        >>> Stop trigger-install scriptlet: glibc-common-0:2.40-3.fc41.x86_64
+        >>> Running trigger-post-uninstall scriptlet: glibc-common-0:2.40-3.fc41.x86_64
+        >>> Stop trigger-post-uninstall scriptlet: glibc-common-0:2.40-3.fc41.x86_64
+        Complete!
+        Removed 24 files, 13 directories. 0 errors occurred.
+    ==> 8a9a360: IMAGE /tmp/velocity/build/fedora-41-8a9a360/8a9a360.sif (fedora@41) BUILT [0:00:21]
+
+    ==> de9c02b: BUILD hello-world@1.0 ...
+    ==> de9c02b: COPYING FILES ...
+        FILE: /tmp/velocity/images/hello-world/files/hello_world.py -> /tmp/velocity/build/hello-world-1.0-de9c02b/hello_world.py
+    ==> de9c02b: GENERATING SCRIPT ...
+        SCRIPT: /tmp/velocity/build/hello-world-1.0-de9c02b/script
+        Bootstrap: localimage
+        From: /tmp/velocity/build/fedora-41-8a9a360/8a9a360.sif
+
+        %files
+        hello_world.py /hello_world
+
+        %post
+        dnf -y install python3
+        chmod +x /hello_world
+
+        %runscript
+        /hello_world
+    ==> de9c02b: BUILDING ...
+        #!/usr/bin/env bash
+        apptainer build --disable-cache /tmp/velocity/build/hello-world-1.0-de9c02b/de9c02b.sif /tmp/velocity/build/hello-world-1.0-de9c02b/script;
+        Updating and loading repositories:
+         Fedora 41 openh264 (From Cisco) - x86_ 100% |  11.1 KiB/s |   6.0 KiB |  00m01s
+         Fedora 41 - x86_64                     100% |  11.7 MiB/s |  35.4 MiB |  00m03s
+         Fedora 41 - x86_64 - Updates           100% |  50.1 KiB/s |  31.9 KiB |  00m01s
+         Fedora 41 - x86_64 - Test Updates      100% |   1.8 MiB/s |   2.1 MiB |  00m01s
+        Repositories loaded.
+        Package                     Arch   Version           Repository           Size
+        Installing:
+         python3                    x86_64 3.13.0~rc2-1.fc41 fedora           31.8 KiB
+        Installing dependencies:
+         expat                      x86_64 2.6.3-1.fc41      updates-testing 291.5 KiB
+         libb2                      x86_64 0.98.1-12.fc41    fedora           42.2 KiB
+         mpdecimal                  x86_64 2.5.1-16.fc41     fedora          204.9 KiB
+         python-pip-wheel           noarch 24.2-1.fc41       fedora            1.2 MiB
+         python3-libs               x86_64 3.13.0~rc2-1.fc41 fedora           40.3 MiB
+        Installing weak dependencies:
+         python-unversioned-command noarch 3.13.0~rc2-1.fc41 fedora           23.0   B
+
+        Transaction Summary:
+         Installing:        7 packages
+
+        Total size of inbound packages is 11 MiB. Need to download 11 MiB.
+        After this operation 42 MiB will be used (install 42 MiB, remove 0 B).
+        [1/7] libb2-0:0.98.1-12.fc41.x86_64     100% |  94.1 KiB/s |  25.7 KiB |  00m00s
+        [2/7] python3-0:3.13.0~rc2-1.fc41.x86_6 100% |  95.9 KiB/s |  27.4 KiB |  00m00s
+        [3/7] mpdecimal-0:2.5.1-16.fc41.x86_64  100% | 408.0 KiB/s |  89.0 KiB |  00m00s
+        [4/7] expat-0:2.6.3-1.fc41.x86_64       100% | 447.4 KiB/s | 114.1 KiB |  00m00s
+        [5/7] python-pip-wheel-0:24.2-1.fc41.no 100% |   2.5 MiB/s |   1.2 MiB |  00m00s
+        [6/7] python-unversioned-command-0:3.13 100% | 125.1 KiB/s |  10.5 KiB |  00m00s
+        [7/7] python3-libs-0:3.13.0~rc2-1.fc41. 100% |   8.1 MiB/s |   9.1 MiB |  00m01s
+        --------------------------------------------------------------------------------
+        [7/7] Total                             100% |   6.7 MiB/s |  10.6 MiB |  00m02s
+        Running transaction
+        [1/9] Verify package files              100% | 269.0   B/s |   7.0   B |  00m00s
+        [2/9] Prepare transaction               100% | 280.0   B/s |   7.0   B |  00m00s
+        [3/9] Installing expat-0:2.6.3-1.fc41.x 100% |  71.7 MiB/s | 293.6 KiB |  00m00s
+        [4/9] Installing python-pip-wheel-0:24. 100% | 310.4 MiB/s |   1.2 MiB |  00m00s
+        [5/9] Installing mpdecimal-0:2.5.1-16.f 100% |  50.3 MiB/s | 206.0 KiB |  00m00s
+        [6/9] Installing libb2-0:0.98.1-12.fc41 100% |   4.7 MiB/s |  43.3 KiB |  00m00s
+        [7/9] Installing python3-libs-0:3.13.0~ 100% | 139.9 MiB/s |  40.7 MiB |  00m00s
+        [8/9] Installing python3-0:3.13.0~rc2-1 100% |  10.9 MiB/s |  33.6 KiB |  00m00s
+        [9/9] Installing python-unversioned-com 100% |   1.8 KiB/s | 424.0   B |  00m00s
+        >>> Running trigger-install scriptlet: glibc-common-0:2.40-3.fc41.x86_64
+        >>> Stop trigger-install scriptlet: glibc-common-0:2.40-3.fc41.x86_64
+        Complete!
+    ==> de9c02b: IMAGE /tmp/velocity/build/hello-world-1.0-de9c02b/de9c02b.sif (hello-world@1.0) BUILT [0:00:14]
+
+    ==> BUILT: /tmp/velocity/hello-world-1.0_fedora-41__x86_64-fedora.sif
+
 
 Our hello-world image has been built!
 
 .. code-block:: bash
-    :emphasize-lines: 3
+    :emphasize-lines: 7
 
-    user@hostname:~$ podman image ls
-    REPOSITORY                                 TAG         IMAGE ID      CREATED        SIZE
-    localhost/hello-world__1.0__x86_64__fedora latest      db958bad4f40  4 minutes ago  337 MB
-    docker.io/library/fedora                   41          54d1373b70a2  5 weeks ago    180 MB
+    user@hostname:~$ ls
+    total 190972
+    drwxr-xr-x  4 xjv  users      4096 Sep 18 10:01 .
+    drwxrwxrwt 31 root root     131072 Sep 18 10:01 ..
+    drwxr-xr-x  4 xjv  users      4096 Sep 18 10:01 build
+    -rwxr-xr-x  1 xjv  users  66007040 Sep 18 09:42 fedora-38__x86_64-fedora.sif
+    -rwxr-xr-x  1 xjv  users 129392640 Sep 18 10:01 hello-world-1.0_fedora-41__x86_64-fedora.sif
+    drwxr-xr-x  4 xjv  users      4096 Sep 18 09:44 images
+
+
+Now you can run the image!
+
+.. code-block:: bash
 
+    user@hostname:~$ apptainer run hello-world-1.0_fedora-41__x86_64-fedora.sif
+    Hello, World!
diff --git a/src/velocity/__main__.py b/src/velocity/__main__.py
index 6f27cae..f893db3 100644
--- a/src/velocity/__main__.py
+++ b/src/velocity/__main__.py
@@ -19,7 +19,7 @@
     epilog="See https://github.com/olcf/velocity",
 )
 parser.add_argument(
-    "-v", "--version", action="version", version=f"%(prog)s {version('velocity')}", help="program version"
+    "-v", "--version", action="version", version=f"%(prog)s {version('olcf-velocity')}", help="program version"
 )
 parser.add_argument(
     "-D",

From b4e46c11794b44709a78a6510ccdd45ec8515dac Mon Sep 17 00:00:00 2001
From: Asa <59259908+AcerP-py@users.noreply.github.com>
Date: Wed, 18 Sep 2024 14:51:36 -0400
Subject: [PATCH 10/10] Update README.md

---
 README.md | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index bf495b8..8b9a36f 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-<h1><img align="center" height="50" src="assets/artwork/icon.drawio.png"> VELOCITY</h1>
+<h1><img align="center" height="50" src="misc/artwork/icon.drawio.png"> VELOCITY</h1>
 
 ## Description
 A container build manager.
@@ -12,4 +12,7 @@ python3 -m http.server 8080
 And then go to <http://localhost:8080>.
 
 ## Installation
-Simply run the `setup-env.sh` script and set the correct variables.
+``` commandline
+pip install olcf-velocity
+alias velocity="python3 -m velocity"
+```