anchor.diff:  
   stdenv.mkDerivation rec {
     pname = "babl";
  -  version = "0.1.88";
  +  version = "0.1.90";
   
     outputs = [ "out" "dev" ];
   
  +  patches = [
  +    # Fix darwin build
  +    (fetchpatch {
  +      url = "https://gitlab.gnome.org/GNOME/babl/-/commit/33b18e74c9589fd4d5507ab88bd1fb19c15965dd.patch";
  +      sha256 = "bEjjOjHGTF55o1z31G9GNDqERxn/7vUuWZQYHosSEBQ=";
  +    })
  +  ];
  +
     src = fetchurl {
       url = "https://download.gimp.org/pub/babl/${lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
  -    sha256 = "sha256-Tw1/SqoLsucl80mt97NRqVfZ+ybVVdmJWnr4FrQWcDk=";
  +    sha256 = "sha256-bi67Y283WBWI49AkmbPS9p+axz40omL0KRHX9ZBqkkM=";
     };
   
     nativeBuildInputs = [
  
positive.code:   meta = with lib; {
      description = "Image pixel format conversion library";
      homepage = "https://gegl.org/babl/";
      license = licenses.lgpl3Plus;
      maintainers = with maintainers; [ jtojnar ];
      platforms = platforms.unix;
  
negative.code: { stdenv
  , lib
  , fetchurl
  , fetchpatch
  , meson
  , ninja
  , pkg-config
  