-* systemctl (and possibly related tools): support a new switch that
- allows enumerating units in local containers recursively. "systemctl
- list-units -R" or so should not only lists on the host, but also the
- services in all containers in a pretty way, to give an overview of
- the entire system. Also, maybe add "systemctl list-machines" which
- works like "machinectl list" but includes information about the
- health status of each registered machine. For that we should
- probably implement something that encodes the system health status
- in a single enum state, i.e. something like a system-wide state
- starting → running → failed → stopping, that is based on the current
- job queue and a check for failed services. Maybe then change
- "systemctl status" without args to output this state along with a
- selection of other data, such as the uptime or so.
+* systemctl: support --recursive for list-sockets, list-timers,
+ ... too, not just for list-units.