anchor.diff:    ++ lib.optional (cups != null) cups
     ++ lib.optional (mysql != null) mysql.lib
     ++ lib.optional (postgresql != null) postgresql
  -  ++ lib.optionals gtkStyle [gnome_vfs libgnomeui gtk GConf];
  +  ++ lib.optionals gtkStyle [gnome_vfs.out libgnomeui.out gtk GConf];
   
     buildInputs =
       [ bison flex gperf ruby ]
  
positive.code:       substituteInPlace qtbase/src/widgets/styles/qgtk2painter.cpp --replace "@gtk@" "${gtk}"
        substituteInPlace qtbase/src/widgets/styles/qgtkstyle_p.cpp \
          --replace "@gtk@" "${gtk}" \
          --replace "@gnome_vfs@" "${gnome_vfs}" \
          --replace "@libgnomeui@" "${libgnomeui}" \
          --replace "@gconf@" "${GConf}"
      ''
      + lib.optionalString mesaSupported ''
  
negative.code:       substituteInPlace qtbase/configure --replace /bin/pwd pwd
        substituteInPlace qtbase/src/corelib/global/global.pri --replace /bin/ls ${coreutils}/bin/ls
        sed -e 's@/\(usr\|opt\)/@/var/empty/@g' -i config.tests/*/*.test -i qtbase/mkspecs/*/*.conf
  
        sed -i 's/PATHS.*NO_DEFAULT_PATH//' "qtbase/src/corelib/Qt5Config.cmake.in"
        sed -i 's/PATHS.*NO_DEFAULT_PATH//' "qtbase/src/corelib/Qt5CoreMacros.cmake"
  