It seems that for new Silverblue installs, snaps no longer work. I’m inferring from the error message that as of Fedora 31 Silverblue the home-directory defaults to path /var/home/<user>, instead of /home/<user>. snap seems to pick up on that. Not even the Snap-store runs anymore.
$ snap run snap-store
WARNING: cgroup v2 is not fully supported yet, proceeding with partial confinement
Sorry, home directories outside of /home are not currently supported.
See https://forum.snapcraft.io/t/11209 for details.
Can anyone confirm this is indeed a general issue, instead of something specific on my machine? Any ideas if there is a standard way of fixing this? (Obviously, it’s better to fix this on the snap-side, but I am also wondering if there is a trivial setting that may resolve/work-around this for now.)