anchor.diff:    '';
   
     meta = with stdenv.lib; {
  -  description = "Video Acceleration (VA) API for Linux";
  +    description = "Video Acceleration (VA) API for Linux";
       homepage = http://www.freedesktop.org/wiki/Software/vaapi;
       license = licenses.mit;
  -    maintainers = with maintainers; [ ];
  +    maintainers = with maintainers; [
  +      wkennington
  +    ];
       platforms = with platforms;
  -      i686-linux
  -      ++ x86_64-linux;
  +      x86_64-linux;
     };
   }
  
positive.code:   ];
  
    configureFlags = [
      (enFlag "drm" (libdrm != null) null)
      (enFlag "x11" (xorg.libX11 != null && mesa != null) null)
      (enFlag "glx" (mesa != null) null)
      (enFlag "egl" (mesa != null) null)
      (enFlag "wayland" (wayland != null && mesa != null) null)
      #"--enable-dummy-driver"
      "--enable-largefile"
      "--with-drivers-path=${mesa_noglu.driverSearchPath}/lib/dri"
  
negative.code: , xorg
  }:
  
  stdenv.mkDerivation rec {
    name = "libva-1.7.0";
  
    src = fetchurl {
      url = "https://www.freedesktop.org/software/vaapi/releases/libva/" +
            "${name}.tar.bz2";
      sha1Confirm = "e1e440da60b11986afb54fc130c7707f11827298";
      sha256 = "a689bccbcc81a66b458e448377f108c057d3eee44a2e21a23c92c549dc8bc95f";
    };
  
    buildInputs = [
  