anchor.diff:  
     buildInputs = [
       gobject-introspection
  -    gtk3
  -    libhandy
  +    gtk4
  +    libadwaita
       librsvg
       poppler_gi
     ];
  
positive.code:     owner = "rmnvgr";
      repo = "metadata-cleaner";
      rev = "v${version}";
      sha256 = "sha256-HlP/QahVFCAct06pKanjozFqeyTdHoHanIemq5ID2CQ=";
    };
  
    nativeBuildInputs = [
      appstream
      desktop-file-utils
      glib
      gtk3
      meson
      ninja
      pkg-config
  
negative.code: , desktop-file-utils
  , glib
  , gobject-introspection
  , gtk4
  , itstool
  , libadwaita
  , librsvg
  , meson
  , ninja
  