anchor.diff:      owner = "KhronosGroup";
       repo = "MoltenVK";
       rev = "v${version}";
  -    hash = "sha256-IfTBtA2fM7YN4qaSDUTfsiCXzn+omSV6oroL1ivKiVA=";
  +    hash = "sha256-5ie1IGzZqaYbciFnrBJ1/9V0LEuz7JsEOFXXkG3hJzg=";
     };
   
     patches = [
  
positive.code:       src = fetchFromGitHub {
          owner = "KhronosGroup";
          repo = "Vulkan-Headers";
          rev = "1dace16d8044758d32736eb59802d171970e9448";
          hash = "sha256-C6YgxWcinI3QumcWmoJaiTAf0u6jSDc8sCIarn2t04k";
        };
        meta = old.meta // {
          platforms = old.meta.platforms ++ lib.platforms.darwin;
        };
      });
    };
  
negative.code: in
  stdenvNoCC.mkDerivation rec {
    pname = "MoltenVK";
    version = "1.1.9";
  
    buildInputs = [
      AppKit
  