Nice, same! Was also really positively surprised by how great the Android app(s) for XMPP feel.
Only thing not working yet for me is group chat creation. Oh well. Maybe this weekend.
On the other hand though, voice and video calls have worked flawlessly.
Very cool!
Re: the backup / restore of state in NixOS: I found myself writing the same things over and over again for each VM/service, so finally wrote this wrapper module (in action e.g. here for Jellyfin), which confgures both the backup services and timers, as well as adding a simple
rsync-restore-jellyfincommand to the system packages. In case you find this useful and don't already have your own abstractions, or a sufficiently different use case ๐