anchor.diff:  
   python3.pkgs.buildPythonApplication rec {
     pname = "metadata-cleaner";
  -  version = "2.0.1";
  +  version = "2.1.3";
   
     format = "other";
   
  
positive.code: , itstool
  , libadwaita
  , librsvg
  , meson
  , ninja
  , pkg-config
  , poppler_gi
  
negative.code:     owner = "rmnvgr";
      repo = "metadata-cleaner";
      rev = "v${version}";
      hash = "sha256-9sLjgqqQBXcudlBRmqAwWcWMUXoIUyAK272zaNKbJNY=";
    };
  
    nativeBuildInputs = [
  