anchor.diff:      chroma = enableAcoustid;
       convert = enableConvert;
       discogs = enableDiscogs;
  -    echonest = enableEchonest;
       embyupdate = enableEmbyupdate;
       fetchart = enableFetchart;
       lastgenre = enableLastfm;
  
positive.code:                                    pythonPackages.requests2
      ++ optional enableConvert      ffmpeg
      ++ optional enableDiscogs      pythonPackages.discogs_client
      ++ optional enableEchonest     pythonPackages.pyechonest
      ++ optional enableLastfm       pythonPackages.pylast
      ++ optional enableMpd          pythonPackages.mpd
      ++ optional enableThumbnails   pythonPackages.pyxdg
  
negative.code:   };
  
    pluginsWithoutDeps = [
      "beatport" "bench" "bpd" "bpm" "bucket" "cue" "duplicates" "edit" "embedart"
      "export" "filefilter" "freedesktop" "fromfilename" "ftintitle" "fuzzy" "hook" "ihate"
      "importadded" "importfeeds" "info" "inline" "ipfs" "keyfinder" "lyrics"
      "mbcollection" "mbsubmit" "mbsync" "metasync" "missing" "permissions" "play"
      "plexupdate" "random" "rewrite" "scrub" "smartplaylist" "spotify" "the"
  