anchor.diff:    , flac ? null
     , mp3val ? null
   , enableBpd ? false
  -  , gst-python_0 ? null
     , gst-plugins-base_0 ? null
  +  , gstreamer_0
   , enableDiscogs ? true
   , enableEchonest ? true
  -, enableEmbyupdate ? true
  +, enableEmbyUpdate ? true
   , enableFetchart ? true
   , enableLastfm ? true
   , enableMpd ? true
  
positive.code:     chroma = enableAcoustid;
      discogs = enableDiscogs;
      echonest = enableEchonest;
      embyupdate = enableEmbyupdate;
      fetchart = enableFetchart;
      lastgenre = enableLastfm;
      lastimport = enableLastfm;
  
negative.code: , writeScript
  
  , python
  , python2Packages
  , imagemagick
  
  , enableAcousticbrainz ? true
  