anchor.diff:  { stdenv, fetchurl, cmake, qt4, perl, shared_mime_info, libvorbis, taglib
   , flac, libsamplerate, libdvdread, lame, libsndfile, libmad, gettext
  -, kdelibs, kdemultimedia, automoc4, phonon
  +, kdelibs, kdemultimedia, automoc4, phonon, libkcddb ? null
   }:
   
   stdenv.mkDerivation rec {
  
positive.code:       flac libsamplerate libdvdread lame libsndfile
        libmad gettext stdenv.gcc.libc
        kdelibs kdemultimedia automoc4 phonon
      ];
  
    enableParallelBuilding = true;
  
negative.code:   meta = with stdenv.lib; {
      description = "CD/DVD Burning Application for KDE";
      license = licenses.gpl2Plus;
      maintainers = [ maintainers.sander maintainers.urkud maintainers.phreedom ];
      platforms = with stdenv.lib.platforms; linux;
    };
  }
  