-* when isolating, try to figure out a way how we implicitly can order
- all units we stop before the isolating unit...
+* snapshots really should be isolatable, but currently aren't.
+
+* seems that when we follow symlinks to units we prefer the symlink
+ destination path over /etc and /usr. We shouldn't do that. Instead
+ /etc should always override /run+/usr and also any symlink
+ destination.