anchor.diff:          Samba = samba;
           Sasl2 = cyrus_sasl;
           SharedDesktopOntologies = shared_desktop_ontologies;
  +        SignOnQt5 = signon.override { inherit qt5; };
           SndFile = libsndfile;
           Speechd = speechd;
           TIFF = libtiff;
  
positive.code:         buildInputs =
            super.krfb.buildInputs
            ++ [pkgs.xlibs.libXtst kde4.telepathy.common_internals];
        };
  
        libkdcraw = with pkgs; super.libkdcraw // {
  
negative.code:         GSL = gsl;
          HUNSPELL = hunspell;
          HUpnp = herqq;
          Intltool = intltool;
          Jasper = jasper;
          KActivities = kde4.kactivities;
          LCMS2 = lcms2;
  