It's also not a complete alternative, because it doesn't have anything for user session services like `systemd --user`. I use postmarketOS which is based on Alpine which uses OpenRC, and desktop session daemons currently have to be started by the compositor via XDG autostart files. So services start fine but they're not restarted if they crash, they have ad-hoc logging, etc.
One of the pmOS devs wrote a user session service manager [1] but pmOS doesn't use it (yet?). And Alpine as a whole is planning on moving away from OpenRC anyway.
It really seems strange to me that postmarketOS does not use systemd, given how its too main usecases (mobile use as well as server use of repurposed devices) would certainly benefit from a mature service manager. Possibly even if they had to put it on top of Alpine themselves.
pmOS has no intention of moving off of Alpine base, and systemd is still incompatible with musl (or vice versa, depending on which side you're on in the arguement :) ), and OpenRC works well enough for now.
