anchor.diff:  { stdenv, fetchurl, boost, cmake, gettext, gstreamer, gst_plugins_base
   , liblastfm, qt4, taglib, fftw, glew, qjson, sqlite, libgpod, libplist
   , usbmuxd, libmtp, gvfs, libcdio, protobuf, libspotify, qca2, pkgconfig
  -, sparsehash }:
  +, sparsehash, config }:
   
  +let withSpotify = config.clementine.spotify or false;
  +in
   stdenv.mkDerivation {
     name = "clementine-1.2.1";
   
  
positive.code:     license = licenses.gpl3Plus;
      platforms = platforms.linux;
      maintainers = [ maintainers.ttuegel ];
      hydraPlatforms = []; # libspotify is unfree
    };
  }
  
negative.code:     liblastfm
      libmtp
      libplist
      pkgconfig
      protobuf
      qca2
  