anchor.diff:  , cogl
   , dbus
   , dbus_glib
  +, dconf
   , evolution-data-server
   , gcr
   , gdk-pixbuf
  
positive.code:   ];
  
    preFixup = ''
      gnomeWrapperArgs+=(
        "--prefix PATH : ${unzip}/bin"
        "--prefix XDG_DATA_DIRS : ${evolution-data-server}/share"
      )
    '' + ''
      echo "${unzip}/bin" > $out/${passthru.mozillaPlugin}/extra-bin-path
    '';
  
negative.code:     intltool
      libtool
      libxslt
      makeWrapper
    ];
  
    buildInputs = [
  