Use pyproject.toml + optional PDM

.gitignore

@@ -0,0 +1,162 @@
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+cover/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+.pybuilder/
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+#   For a library or package, you might want to ignore these files since the code is
+#   intended to run in multiple environments; otherwise, check them in:
+# .python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# poetry
+#   Similar to Pipfile.lock, it is generally recommended to include poetry.lock in version control.
+#   This is especially recommended for binary packages to ensure reproducibility, and is more
+#   commonly ignored for libraries.
+#   https://python-poetry.org/docs/basic-usage/#commit-your-poetrylock-file-to-version-control
+#poetry.lock
+
+# pdm
+#   Similar to Pipfile.lock, it is generally recommended to include pdm.lock in version control.
+#pdm.lock
+#   pdm stores project-wide configurations in .pdm.toml, but it is recommended to not include it
+#   in version control.
+#   https://pdm-project.org/#use-with-ide
+.pdm.toml
+.pdm-python
+.pdm-build/
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow and github.com/pdm-project/pdm
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# Cython debug symbols
+cython_debug/
+
+# PyCharm
+#  JetBrains specific template is maintained in a separate JetBrains.gitignore that can
+#  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
+#  and can be added to the global gitignore or merged into this file.  For a more nuclear
+#  option (not recommended) you can uncomment the following to ignore the entire idea folder.
+#.idea/

README.md

@@ -2,43 +2,37 @@
 
 This is a Flask app generating a draft .zip of a YunoHost application after filling a form
 
-Official instance: https://appgenerator.yunohost.org/
+Official instance: <https://appgenerator.yunohost.org>
 
 ## Developement
 
+You can use [PDM](https://pdm-project.org) to install deps and run the app.
+
 ```bash
-python3 -m venv venv
-source venv/bin/activate
-pip3 install -r requirements.txt
+# Generate the virtualenv
+pdm install
 
-# you need to manually download the assets to have access to the css and the javascript files
-(cd static && bash fetch_assets)
+# Fetch the css and javascript assets (only to be run once or after a git pull)
+pdm run fetch_assets
 ```
 
-And then start the dev server:
+And then start the dev server (you can pass arguments that will be passed to Flask):
 
 ```bash
-source venv/bin/activate
-FLASK_APP=app.py FLASK_ENV=development flask --debug run
+pdm run start
 ```
 
 ## Translation
 
 It's based on Flask-Babel : <https://python-babel.github.io/flask-babel/>
 
-```bash
-source venv/bin/activate
-
-# Extract the english sentences from the code, needed if you modified it
-pybabel extract --ignore-dirs venv -F babel.cfg -o messages.pot .
+You can use PDM to run the commands:
 
-# If working on a new locale: initialize it (in this example: fr)
-pybabel init -i messages.pot -d translations -l fr
-# Otherwise, update the existing .po:
-pybabel update -i messages.pot -d translations
+```bash
+pdm run update_translations
+```
 
-# ... translate stuff in translations/<lang>/LC_MESSAGES/messages.po
-# re-run the 'update' command to let Babel properly format the text
-# then compile:
-pybabel compile -d translations
+To initialize a new locale (here, fr):
+```bash
+pdm run translation_create fr
 ```

app.py

@@ -1,44 +1,38 @@
-import re
-import os
+#!/usr/bin/env python3
+
 import hashlib
-import urllib.request
+import importlib
 import logging
-import zipfile
+import os
 import random
+import re
 import string
+import tomllib
+import urllib.request
+import zipfile
 from io import BytesIO
-from flask import (
-    Flask,
-    render_template,
-    render_template_string,
-    request,
-    redirect,
-    send_file,
-    make_response,
-    session,
-)
+from pathlib import Path
 
+from flask import (Flask, make_response, redirect, render_template,
+                   render_template_string, request, send_file, session)
+from flask_babel import Babel
+from flask_babel import lazy_gettext as _
 from flask_wtf import FlaskForm
-from flask_babel import Babel, lazy_gettext as _
-
-from wtforms import (
-    StringField,
-    SelectField,
-    SubmitField,
-    TextAreaField,
-    BooleanField,
-    SelectMultipleField,
-    HiddenField,
-)
-from wtforms.validators import (
-    DataRequired,
-    Optional,
-    Regexp,
-    URL,
-    Length,
-)
-
-YOLOGEN_VERSION = "0.20"
+from wtforms import (BooleanField, HiddenField, SelectField,
+                     SelectMultipleField, StringField, SubmitField,
+                     TextAreaField)
+from wtforms.validators import URL, DataRequired, Length, Optional, Regexp
+
+
+def get_version():
+    source_location = Path(__file__).parent
+    if (pyproject := (source_location / "pyproject.toml")).exists():
+        return tomllib.loads(pyproject.read_text())['project']['version']
+    else:
+        return importlib.metadata.version("package")
+
+
+__version__ = get_version()
 LANGUAGES = {"en": _("English"), "fr": _("French")}
 
 ###############################################################################