This can be closed, now that we have F2FS support. Although maybe the error message could be better for file systems that are not supported. Right now the use has no way to distinguish whether `guix system` failed to find their device because they mistyped the UUID or because it doesn't even support their file system of choice at all.
- bug#40386: guix system init can't find file system by UUI... raingloom
- bug#40386: guix system init can't find file system b... Ludovic Courtès
- bug#40386: guix system init can't find file system b... raingloom
