anchor.diff:              "src/analyze/test-verify.c"
               "src/test/test-env-file.c"
               "src/test/test-fileio.c"
  -            "test/test-execute/exec-systemcallfilter-failing2.service"
  -            "test/test-execute/exec-systemcallfilter-failing3.service"
  -            "test/test-execute/exec-systemcallfilter-failing.service"
  -            "test/testsuite-06.units/hola.service"
  -            "test/udev-test.pl"
  -            "test/units/hello.service"
  -            "test/units/testsuite-07.sh"
  -            "test/units/testsuite-15.sh"
  -            "test/units/testsuite-17.05.sh"
  -            "test/units/testsuite-40.sh"
  -            "test/units/unstoppable.service"
             ];
           }
           {
  
positive.code:           replacement = "$out/lib/systemd/systemd-fsck";
            where = [
              "man/systemd-fsck@.service.xml"
              "test/test-fstab-generator.sh"
              "test/test-fstab-generator/test-12-dev-sdx.expected/systemd-fsck-root.service"
              "test/test-fstab-generator/test-13-label.expected/systemd-fsck-root.service"
              "test/test-fstab-generator/test-14-uuid.expected/systemd-fsck-root.service"
              "test/test-fstab-generator/test-15-partuuid.expected/systemd-fsck-root.service"
            ];
          }
        ] ++ lib.optionals withImportd [
  
negative.code:         map (path: "substituteInPlace ${path} --replace '${search}' \"${replacement}\"") where;
        mkEnsureSubstituted = { replacement, search, where }:
          ''
            if [[ $(grep -r '${search}' | grep -v "${replacement}" | grep -Ev 'NEWS|^test/' | wc -l) -gt 0 ]]; then
              echo "Not all references to '${search}' have been replaced. Found the following matches:"
              grep '${search}' -r | grep -v "${replacement}" | grep -Ev 'NEWS|^test/'
              exit 1
            fi
          '';
  