>
> snip
> My guess is that it got into squeeze long ago, in the days of
> systemd-innocence.
> snip


Shall we rename systemd meta package to systemd-innocence in devuan? :)

It seems like dbus depends on systemd-login0. But dbus isn't installed by
default (at least for minimal install).
But if you install any X stuff you can't escape it.

--
aldemir