> I am not sure whether this is intended behavior, but it seems weird to > me. Inside e.g. > > guix shell -Cu test coreutils > > /home/test is mounted read-only and I do not see any way to make it > writable without sharing a host directory.
Yes this is intentional. The root has been changed to read only recently. See the guix news. Use --writable-root to restore the previous behavior.