anchor.diff:  assert aacSupport -> faad2 != null;
   assert zipSupport -> libzip != null;
   assert ffmpegSupport -> ffmpeg != null;
  +assert apeSupport -> yasm != null;
   assert artworkSupport -> imlib2 != null;
   assert hotkeysSupport -> libX11 != null;
   assert osdSupport -> dbus != null;
  
positive.code:     ++ optional aacSupport faad2
      ++ optional zipSupport libzip
      ++ optional ffmpegSupport ffmpeg
      ++ optional artworkSupport imlib2
      ++ optional hotkeysSupport libX11
      ++ optional osdSupport dbus
  
negative.code: , midiSupport ? false, wildmidi ? null
  , wavpackSupport ? false, wavpack ? null
  , ffmpegSupport ? false, ffmpeg ? null
  , apeSupport ? true, yasm ? null
  # misc plugins
  , zipSupport ? true, libzip ? null
  , artworkSupport ? true, imlib2 ? null
  