pkgs/desktops/gnome/update.nix

   1 { stdenv, pkgs, lib, writeScript, python3, common-updater-scripts }:
   2 { packageName, attrPath ? packageName, versionPolicy ? "tagged", freeze ? false }:
   3
   4 let
   5   python = python3.withPackages (p: [ p.requests p.libversion ]);
   6   package = lib.attrByPath (lib.splitString "." attrPath) (throw "Cannot find attribute ‘${attrPath}’.") pkgs;
   7   packageVersion = lib.getVersion package;
   8   upperBound =
   9     let
  10       versionComponents = lib.versions.splitVersion packageVersion;
  11       minorVersion = lib.versions.minor packageVersion;
  12       minorAvailable = builtins.length versionComponents > 1 && builtins.match "[0-9]+" minorVersion != null;
  13       nextMinor = builtins.fromJSON minorVersion + 1;
  14       upperBound = "${lib.versions.major packageVersion}.${builtins.toString nextMinor}";
  15     in
  16     if builtins.isBool freeze then
  17       lib.optionals (freeze && minorAvailable) [ upperBound ]
  18     else if builtins.isString freeze then
  19       [ freeze ]
  20     else
  21       throw "“freeze” argument needs to be either a boolean, or a version string.";
  22   updateScript = writeScript "gnome-update-script" ''
  23     #!${python}/bin/python
  24     import json
  25     import os
  26     import subprocess
  27     import sys
  28     from libversion import Version
  29
  30     _, attr_path, package_name, package_version, version_policy, *remaining_args = sys.argv
  31
  32     flv_args = [
  33         package_name,
  34         version_policy,
  35         os.environ.get("GNOME_UPDATE_STABILITY", "stable"),
  36     ]
  37
  38     match remaining_args:
  39         case []:
  40             pass
  41         case [upper_bound]:
  42             flv_args.append(f"--upper-bound={upper_bound}")
  43         case other:
  44             print("gnome-update-script: Received too many arguments.", file=sys.stderr)
  45             sys.exit(1)
  46
  47     latest_tag = subprocess.check_output(
  48         [
  49             "${python}/bin/python",
  50             "${./find-latest-version.py}",
  51             *flv_args,
  52         ],
  53         encoding="utf-8",
  54     )
  55
  56     if Version(latest_tag) <= Version(package_version):
  57         # No newer updates found.
  58         print(json.dumps([]))
  59         sys.exit(0)
  60
  61     latest_tag = latest_tag.strip()
  62     subprocess.run(
  63         [
  64             "${common-updater-scripts}/bin/update-source-version",
  65             attr_path,
  66             latest_tag,
  67         ],
  68         check=True,
  69     )
  70
  71     report = [
  72         {
  73             "attrPath": attr_path,
  74             "commitBody": f"https://gitlab.gnome.org/GNOME/{package_name}/-/compare/{package_version}...{latest_tag}",
  75         },
  76     ]
  77
  78     print(json.dumps(report))
  79   '';
  80 in {
  81   name = "gnome-update-script";
  82   command = [ updateScript attrPath packageName packageVersion versionPolicy ] ++ upperBound;
  83   supportedFeatures = [
  84     "commit"
  85   ];
  86 }