anchor.diff:  
         # Hibernate / suspend.
         "hibernate.target"
  -      "hibernate.service"
  +      "systemd-hibernate.service"
         "suspend.target"
  -      "suspend.service"
  +      "systemd-suspend.service"
         "sleep.target"
   
         # Reboot stuff.
         "reboot.target"
  -      "reboot.service"
  +      "systemd-reboot.service"
         "poweroff.target"
  -      "poweroff.service"
  +      "systemd-poweroff.service"
         "halt.target"
  -      "halt.service"
  +      "systemd-halt.service"
         "ctrl-alt-del.target"
         "shutdown.target"
         "umount.target"
  
positive.code:       # Journal.
        "systemd-journald.socket"
        "systemd-journald.service"
  
        # SysV init compatibility.
        "systemd-initctl.socket"
  
negative.code:       "systemd-update-utmp-shutdown.service"
        
        # Filesystems.
        "systemd-fsck@.service"
        "systemd-fsck-root.service"
        "systemd-remount-fs.service"
        "local-fs.target"
        "local-fs-pre.target"
  