anchor.diff:      xorg.libXvMC
       xorg.libXxf86vm
       xorg.presentproto
  +    zlib
     ];
   
     patches = [
  
positive.code:     #"--with-vulkan-icddir=DIR"
      #osmesa-bits=8
      #"--with-clang-libdir=${llvm}/lib"
      "--with-egl-platforms=x11,wayland,drm"
      #llvm-prefix
      #xvmc-libdir
      #vdpau-libdir
  
negative.code:         + head (splitString "." version)
          + ".x/${version}/mesa-${version}.tar.xz")
      ];
      multihash = "QmTCzv99X8NmrAHuab3YNSzz4L6L8MRv6eD4GxrZP9Hab5";
      hashOutput = false;  # Provided by upstream directly
      sha256 = "cf234a6ed4764673886b6661553b54675776ef0898f774716173cec890ac3b17";
    };
  
    nativeBuildInputs = [
  