Something like this is needed to allow integration with graphical envs and
fully unprivileged operation.
- follow PropertiesChanged state more closely, to deal with quick logouts and
relogins
- (optionally?) spawn seat-manager@$SEAT.service whenever a seat shows up that as CanGraphical set
+ - expose details of boot entries on the bus. In particular, it should be possible
+ to query the list of boot entry titles that bootctl / sd-boot would show.
+ Currently we only expose their identifiers.
* move logind udev rules to top-level rule.d/ directory