anchor.diff:        else
           false;
       bpd =
  -      #if python2Packages.pygobject_2 != null
  +      #if pythonPackages.pygobject_2 != null
         #   && gst-plugins-base_0 != null
         #   && gstreamer_0 != null then
         #  true
         #else
           false;
       chroma =
  -      if python2Packages.pyacoustid != null then
  +      if pythonPackages.pyacoustid != null then
           true
         else
           false;
       discogs =
  -      if python2Packages.discogs_client != null then
  +      if pythonPackages.discogs_client != null then
           true
         else
           false;
       echonest =
  -      if python2Packages.pyechonest != null then
  +      if pythonPackages.pyechonest != null then
           true
         else
           false;
       embyupdate =
  -      if python2Packages.requests2 != null then
  +      if pythonPackages.requests2 != null then
           true
         else
           false;
       fetchart =
  -      if python2Packages.requests2 != null then
  +      if pythonPackages.requests2 != null then
           true
         else
           false;
       lastgenre =
  -      if python2Packages.pylast != null then
  +      if pythonPackages.pylast != null then
           true
         else
           false;
       lastimport =
  -      if python2Packages.pylast != null then
  +      if pythonPackages.pylast != null then
           true
         else
           false;
       mpdstats =
  -      if python2Packages.mpd != null then
  +      if pythonPackages.mpd != null then
           true
         else
           false;
       mpdupdate =
  -      if python2Packages.mpd != null then
  +      if pythonPackages.mpd != null then
           true
         else
           false;
  
positive.code: , flac
  , imagemagick
  , mp3val
  , python2Packages
  
  # External plugins
  , enableAlternatives ? true
  
negative.code:       else
          false;
      thumbnails =
        if pythonPackages.pyxdg != null then
          true
        else
          false;
      web =
        if pythonPackages.flask != null then
          true
        else
          false;
  