anchor.diff:  , vala
   , gettext
   , wrapGAppsHook
  +, unstableGitUpdater
   }:
   
   stdenv.mkDerivation rec {
  -  pname = "vala-lint-unstable";
  -  version = "2021-02-17";
  +  pname = "vala-lint";
  +  version = "unstable-2021-11-18";
   
     src = fetchFromGitHub {
       owner = "vala-lang";
       repo = "vala-lint";
  -    rev = "5b06cc2341ae7e9f7f8c35c542ef78c36e864c30";
  -    sha256 = "KwJ5sCp9ZrrxIqc6qi2+ZdHBt1esNOO1+uDkS+d9mW8=";
  +    rev = "2db018056befba76136e6c69a78d905a128a6165";
  +    sha256 = "sha256-bQaj2bETzl6ykgrpE2iLAvx691aGDLFteL/ulfoKuEk=";
     };
   
     patches = [
  -    # Fix build against vala-0.54+. Pull fix pending upstream
  +    # Fix build against vala-0.54.3+. Pull fix pending upstream
       # inclusion: https://github.com/vala-lang/vala-lint/pull/155
       (fetchpatch {
         name = "vala-0.54.patch";
  
positive.code:     license = licenses.gpl2Plus;
      platforms = platforms.linux;
      maintainers = teams.pantheon.members;
    };
  }
  
negative.code: 
    doCheck = true;
  
    passthru = {
      updateScript = unstableGitUpdater {
        url = "https://github.com/vala-lang/vala-lint.git";
      };
    };
  
    meta = with lib; {
      homepage = "https://github.com/vala-lang/vala-lint";
      description = "Check Vala code files for code-style errors";
  