systemctl: drop hardcoded chkconfig invocation Introduce /usr/lib/systemd/systemd-sysv-install [--root=] <action> <name> abstraction, replacing the direct calling of chkconfig. This allows distributions to call their specific tools like update-rc.d without patching systemd. Ship systemd-sysv-install.SKELETON as an example for packagers how to implement this. Drop the --enable-chkconfig configure option. Document this in README and point to it in NEWS.