I'd really like to see Shepherd used outside of GuixSD. In theory, since Guix can be installed on top of other distros, this could be leveraged to be make swapping in Shepherd easier. Of course, systemd is much more complex, so replacing the init in systemd-based distro would probably be trickier, but it should be more manageable in places like Void Linux.
Shepherd is quite scary outside of GUIX.
It basically runs package-supplied code in PID 1, with no protection. A badly written init script will halt startup completely and render system unbootable.
GUIX (I believe) has this "choose previous version from GRUB" dialog, so you can recover from bad init script by rolling back the whole thing. Any other OS will require manual fixes, and this is going to be quite a pain.
Ah, thanks for the additional information. That's too bad though, I like the model of a Scheme-based init. I suppose I'll stick with runit for now then.
