anchor.diff:    inherit (lib)
       boolEn;
   
  -  version = "1.8.3";
  +  version = "2.0.0";
   in
   stdenv.mkDerivation rec {
     name = "libva-${version}";
  
positive.code:     "--enable-drm"
      "--enable-x11"
      "--${boolEn opengl-dummy.glx}-glx"
      "--${boolEn opengl-dummy.egl}-egl"
      "--enable-wayland"
      "--enable-va-messaging"
      "--enable-dummy-driver"
      "--with-drivers-path=${opengl-dummy.driverSearchPath}/lib/dri"
    ];
  
  
negative.code:         + "${name}.tar.bz2")
      ];
      hashOutput = false;
      sha256 = "bb0601f9a209e60d8d0b867067323661a7816ff429021441b775452b8589e533";
    };
  
    buildInputs = [
  