anchor.diff:  }:
   
   stdenv.mkDerivation rec {
  +  # TODO: Release 1.2.0 would switch LibAV to FFmpeg.
     version = "1.1.0";
     name = "handbrake-${version}";
   
  
positive.code:     libgudev
    ] ++ (if useFfmpeg then [ ffmpeg ] else [ patched_libav_12 ])
    ++ lib.optional useFdk fdk_aac;
  
    dontUseCmakeConfigure = true;
  
    enableParallelBuilding = true;
  
  
negative.code: # Derivation patches HandBrake to use our closure.
  #
  
  { stdenv, lib, fetchurl,
    python2, pkgconfig, yasm, harfbuzz, zlib,
    autoconf, automake, libtool, m4, jansson,
    libass, libiconv, libsamplerate, fribidi, libxml2, bzip2,
    libogg, libopus, libtheora, libvorbis, libdvdcss, a52dec,
    lame, libdvdread, libdvdnav, libbluray,
  