anchor.diff:      '';
       license = licenses.gpl2;
       maintainers = with maintainers; [ Anton-Latukha wmertens ];
  -    # Not tested on anything else
       platforms = platforms.linux;
     };
   }
  
positive.code:   };
  
    patched_libav_12 = libav_12.overrideAttrs (super: {
      # 2018-04-26: HandBrake compilation (1.1.0) requires a patch of LibAV (12.3) from HandBrake team. This patch not went LibAV upstream.
      patches = (super.patches or []) ++ [(
        fetchurl {
          url = ''https://raw.githubusercontent.com/HandBrake/HandBrake/9e1f245708a157231c427c0ef9b91729d59a30e1/contrib/ffmpeg/A21-mp4-sdtp.patch'';
  
negative.code: # Upstream distributes HandBrake with bundle of according versions of libraries and patches to them.
  #
  # Derivation patches HandBrake to use our closure.
  #
  
  # TODO: Release 1.2.0 would switch LibAV to FFmpeg.
  
  { stdenv, lib, fetchurl,
    python2, pkgconfig, yasm, harfbuzz, zlib,
  