anchor.diff: -{ fetchFromGitLab, lib, python3Packages, gobject-introspection, gtk3, pango, wrapGAppsHook
  +{ fetchFromGitLab
  +, fetchpatch
  +, lib
  +, python3Packages
  +, gobject-introspection
  +, gtk3
  +, pango
  +, wrapGAppsHook
  +, xvfb_run
   , chromecastSupport ? false
   , serverSupport ? false
   , keyringSupport ? true
  
positive.code:   # https://github.com/NixOS/nixpkgs/issues/56943
    strictDeps = false;
  
    # no tests
    doCheck = false;
    pythonImportsCheck = [ "sublime_music" ];
  
    postInstall = ''
  
negative.code: 
  python3Packages.buildPythonApplication rec {
    pname = "sublime-music";
    version = "0.11.11";
    format = "pyproject";
  
    src = fetchFromGitLab {
      owner = "sublime-music";
      repo = pname;
      rev = "v${version}";
      sha256 = "sha256-r4Tn/7CGDny8Aa4kF4PM5ZKMYthMJ7801X3zPdvXh4Q=";
    };
  
    patches = [
      # Switch to poetry-core:
      # https://gitlab.com/sublime-music/sublime-music/-/merge_requests/60
      (fetchpatch {
        name = "use-poetry-core.patch";
        url = "https://gitlab.com/sublime-music/sublime-music/-/commit/9b0af19dbdfdcc5a0fa23e73bb34c7135a8c2855.patch";
        sha256 = "sha256-cXG0RvrnBpme6yKWM0nfqMqoK0qPT6spflJ9AaaslVg=";
      })
    ];
  
    nativeBuildInputs = [
      gobject-introspection
      python3Packages.poetry-core
      wrapGAppsHook
    ];
  
  