anchor.diff:  , gobject-introspection
   , gtk3
   , json-glib
  -, librdf_raptor2
   , python
   , pythonPackages
  +, raptor2
   , sqlite
   , telepathy_glib
   , vala
  
positive.code:     gobject-introspection
      gtk3
      json-glib
      librdf_raptor2
      python
      pythonPackages.rdflib
      sqlite
      telepathy_glib
      vala
  
negative.code:   inherit (stdenv.lib)
      enFlag;
  in
  stdenv.mkDerivation rec {
    name = "zeitgeist-${version}";
    versionMajor = "0.9";
  