should be revisited to make clearer and also work if the payload systemd runs
with full privs and without userns.
+* hibernate/s2h: make this robust and safe to enable in Fedora by default.
+ Specifically:
+
+ 1. add resume_offset support to the resume code (i.e. support swap files
+ properly)
+ 2. check of swap is on weird storage and refuse if so
+ 3. add env-var based option to disable hibernation
+ 4. figure out what to do with swap-on-luks
+ 5. add autodetection of hibernation images, and add "noresume" to disable
+ this
+
* portables: introduce a new unit file directory /etc/systemd/system.attached/
or so, where we attach portable services to