@mw @sonny @pid_eins yeah i am looking at the postmarket os announcement for examples.
superd for example
"superd was invented to be compatible with systemd user service files, and as of writing it is being used in Sxmo. But due to various incompatibilites it does not integrate well enough with gnome-session and cannot be used there. So right now we just don't supervise userspace daemons there and they don't restart if they crash. "
it does provide the functionality but gnome does only want systemd
here is a overview of the current state of systemd alternatives postmarket os is using/missing/wants.
for some just the devpower is missing, for some systemd stuff can be used standalone (eudev for example, which is like perfect. modern code and it is interchangeable if necessary)