anchor.diff:  { lib
   , fetchFromGitLab
  -, fetchpatch
   , meson
   , ninja
   , python3
  
positive.code: 
  python3.pkgs.buildPythonApplication rec {
    pname = "gi-docgen";
    version = "2021.8";
  
    format = "other";
  
  
negative.code:     owner = "GNOME";
      repo = pname;
      rev = version;
      sha256 = "35pL/2TQRVgPfAcfOGCLlSP1LIh4r95mFC+UoXQEEHo=";
    };
  
    depsBuildBuild = [
      python3
  