anchor.diff:      ++ lib.optional (postgresql != null) postgresql
       ++ lib.optionals gtkStyle [gnome_vfs.out libgnomeui.out gtk GConf];
   
  -  nativeBuildInputs = [ lndir python perl pkgconfig ];
  +  nativeBuildInputs = [ fixQtModuleCMakeConfig lndir python perl pkgconfig ];
   
     # freetype-2.5.4 changed signedness of some struct fields
     NIX_CFLAGS_COMPILE = "-Wno-error=sign-compare";
  
positive.code:     ''
        # Don't retain build-time dependencies like gdb and ruby.
        sed '/QMAKE_DEFAULT_.*DIRS/ d' -i $dev/mkspecs/qconfig.pri
      '';
  
    inherit lndir;
  
negative.code: { stdenv, lib, fetchurl, copyPathsToStore, fixQtModuleCMakeConfig
  , srcs
  
  , xlibs, libX11, libxcb, libXcursor, libXext, libXrender, libXi
  