anchor.diff:      ninja
       pkg-config
       python3
  -    vala
  +    # Does not build with Vala 0.56.1:
  +    # ../src/Widgets/Status.vala:8.43-8.56: error: construct
  +    # properties not supported for specified property type
  +    # public API.NotificationType? kind { get; construct set; }
  +    vala_0_54
       wrapGAppsHook
     ];
   
  
positive.code: , fetchFromGitHub
  , nix-update-script
  , fetchpatch
  , vala
  , meson
  , ninja
  , pkg-config
  
negative.code:   ];
  
    postPatch = ''
      chmod +x meson/post_install.py
      patchShebangs meson/post_install.py
    '';
  