add build 4 and add diff links

build.py

@@ -7,6 +7,7 @@
 import html
 import shutil
 import subprocess
+import dataclasses
 
 VERSION_CSV = 'versions.csv'
 OUT_PATH = './out'
@@ -15,31 +16,76 @@
 
 # date +"%Y-%m-%d %H:%M:%S%z"
 
+@dataclasses.dataclass
+class Row:
+  id: str
+  flake: str
+  path: str
+  date: str
+  desc: str
+
+diff_url = 'https://github.com/katrinafyi/pac-nix/compare/{0}...{1}'
+
+def commit(v: Row) -> str | None:
+  front, back = 'github:katrinafyi/pac-nix/', '#aslp_web'
+  if v.flake.startswith(front) and v.flake.endswith(back):
+    return v.flake.replace(front, '', 1).replace(back, '', 1)
+  return None
+
+def rows(versions: list[Row]):
+  for i, ver in enumerate(versions):
+    (v,flake,path,t,desc) = ver.id, ver.flake, ver.path, ver.date, ver.desc
+
+    i -= 1
+    diff = ''
+    # find previous pac-nix commit
+    while (c := commit(ver)) and i >= 0:
+      prev = versions[i]
+      if p := commit(prev):
+        url = diff_url.format(p, c)
+        diff = f'<small>(<a href="{q(url)}/" target="_blank" rel="noopener noreferrer">diff from {q(prev.id)}</a>)</small>'
+        break
+      i -= 1
+
+    yield f'''
+<!--
+  {q(flake)}
+  {q(path)}
+-->
+<a href="{q(v)}/">build {q(v)}</a>
+({q(desc)})
+{diff}
+<small><code>{q(t)}</code></small>
+'''.strip().encode('ascii')
+
+
 def main():
   os.makedirs(OUT_PATH)
 
-  versions = []
+  data = []
   with open(VERSION_CSV) as f:
     for l in f:
       if not l.strip(): continue
-      versions.append([x.strip() for x in l.strip().split(',')])
+      data.append([x.strip() for x in l.strip().split(',')])
+
+  versions = [Row(v,flake,path,t,desc) for v,flake,path,t,desc in data]
 
   print(*versions, sep='\n')
-  for v,flake,path,time in versions:
-    print('building', v, flake)
-    result = 'result_' + v
+  for v in versions:
+    print('building', v)
+    result = 'result_' + v.id
 
-    subprocess.check_call(['nix', 'build', '-L', '--out-link', result, flake])
+    subprocess.check_call(['nix', 'build', '-L', '--out-link', result, v.flake])
 
-    shutil.copytree(result + '/' + path + '/.', OUT_PATH + '/' + v, copy_function=shutil.copy)
+    shutil.copytree(result + '/' + v.path + '/.', OUT_PATH + '/' + v.id, copy_function=shutil.copy)
 
   shutil.copy('./index.html', OUT_PATH)
   shutil.copy('./reset.css', OUT_PATH)
 
-  listing = [f'<a href="{q(v)}/">build {q(v)}</a> (<code>{q(t)}</code>)<!-- {q(flake)} {q(path)} -->'.encode('ascii') for v,flake,path,t in versions]
+  listing = list(rows(versions))
 
   latest = listing[-1]
-  other = b'\n'.join(b'<li>'+x+b'</li>' for x in reversed(listing))
+  other = b'\n\n'.join(b'<li>'+x+b'</li>' for x in reversed(listing))
 
   with open(OUT_PATH + '/index.html', 'rb') as f:
     html = f.read()

index.html

@@ -51,7 +51,7 @@ <h1>ASLp Web</h1>
       <summary>All versions</summary>
       <p>
         <ul>
-          <!--VERSIONS-->
+<!--VERSIONS-->
         </ul>
       </p>
     </details></p>

versions.csv

@@ -1,3 +1,4 @@
-1,github:katrinafyi/pac-nix/35227e069861203638c88e0b47139ce283c25b89#aslp_web,lib/ocaml/4.14.1/site-lib/aslp_web/,2024-06-25 16:14:52+1000
-2,github:katrinafyi/pac-nix/807df4aececfdf4c4010af42edbe1ce64785928f#aslp_web,lib/ocaml/4.14.1/site-lib/aslp_web/,2024-06-28 16:25:48+1000
-3,github:katrinafyi/pac-nix/0828d849a8bc11df73c05233067f390c310bc484#aslp_web,lib/ocaml/5.1.1/site-lib/aslp_web/,2024-07-03 14:44:14+1000
+1,github:katrinafyi/pac-nix/35227e069861203638c88e0b47139ce283c25b89#aslp_web,lib/ocaml/4.14.1/site-lib/aslp_web/,2024-06-25 16:14:52+1000,initial build
+2,github:katrinafyi/pac-nix/807df4aececfdf4c4010af42edbe1ce64785928f#aslp_web,lib/ocaml/4.14.1/site-lib/aslp_web/,2024-06-28 16:25:48+1000,evaluation environment caching
+3,github:katrinafyi/pac-nix/0828d849a8bc11df73c05233067f390c310bc484#aslp_web,lib/ocaml/5.1.1/site-lib/aslp_web/,2024-07-03 14:44:14+1000,ocaml 5
+4,github:katrinafyi/pac-nix/08a867d1d300eb6e17cf7c5ecbe75fe5d2542d9e#aslp_web,lib/ocaml/5.1.1/site-lib/aslp_web/,2024-07-06 21:57:54+1000,web worker