anchor.diff:      "--disable-opencl"
     ];
   
  -  nativeBuildInputs = [ autoreconfHook intltool pkgconfig file ];
  -
  -  propagatedBuildInputs = with xorg;
  -    [ libXdamage libXxf86vm ]
  -    ++ optional stdenv.isLinux libdrm
  +  nativeBuildInputs = [
  +    autoreconfHook intltool pkgconfig file
  +    python2 python2Packages.Mako
  +  ];
  +
  +  propagatedBuildInputs = with xorg; [
  +    libXdamage libXxf86vm
  +  ] ++ optional stdenv.isLinux libdrm
       ++ optionals stdenv.isDarwin [ OpenGL Xplugin ];
   
     buildInputs = with xorg; [
  
positive.code:     libX11 libXext libxcb libXt libXfixes libxshmfence libXrandr
      libffi libvdpau libelf libXvMC
      libpthreadstubs openssl /*or another sha1 provider*/
      python2 python2.pkgs.Mako
    ] ++ lib.optionals (elem "wayland" eglPlatforms) [ wayland wayland-protocols ]
      ++ lib.optionals stdenv.isLinux [ valgrind-light libomxil-bellagio libva-minimal ];
  
  
negative.code: , pkgconfig, intltool, autoreconfHook
  , file, expat, libdrm, xorg, wayland, wayland-protocols, openssl
  , llvmPackages, libffi, libomxil-bellagio, libva-minimal
  , libelf, libvdpau, valgrind-light, python2, python2Packages
  , libglvnd
  , enableRadv ? true
  , galliumDrivers ? null
  