Comment 9 for bug 1532553

In that case we are missing documentation for the shutdown/halt procedure more than ever.
Very often halt.local is where we'd do stuff like powering off UPS outlets, to handle power-outage scenarios properly. It may not have been documented or placed ideally, but AFAIKT, it's actually always worked. Without the halt-local.service, we're missing that easy hook, as I see it.

The nut package for one, does not include a systemd unit that can do the exact same thing, and to my experience, figuring out exactly which depencencies to create for a new unit tile to accomplish the same without breaking something else, is really not that well documented, or just not very easy to find.