elogind has been successfully used as a drop-in replacement for logind on systemd-less distros as well.

https://github.com/elogind/elogind

Please note that elogind is literally logind amended to run standalone. (I run it as a part of my Void Linux desktop.)

Correct, it's one of the few good things (in my opinion) to come out of systemd as a whole. It's a valiant effort, and I also use it in Void.