anchor.diff:  
   stdenv.mkDerivation rec {
     pname = "gnome-chess";
  -  version = "43.rc";
  +  version = "43.0";
   
     src = fetchurl {
       url = "mirror://gnome/sources/gnome-chess/${lib.versions.major version}/${pname}-${version}.tar.xz";
  -    sha256 = "Z35PUU75rIjDnNdJQWOqBpdCYEuCZexGlxBwdhue5Yw=";
  +    sha256 = "ZDP+3y9C+yK/IC2fE47C7gcjetXXQ4CQULXICbVs28s=";
     };
   
     nativeBuildInputs = [
  
positive.code:     gettext
      itstool
      libxml2
      python3
      wrapGAppsHook4
      gobject-introspection
    ];
  
negative.code:     librsvg
      pango
    ];
  
    passthru = {
      updateScript = gnome.updateScript {
  