Hey Ludo,
Sadly I think its kind of the same problem as the one I described here: https://lists.gnu.org/archive/html/guix-devel/2018-12/msg00161.html. As we are not able to undo what's done by the cow-store service, once restarted, the installer can't be used properly anymore. So I guess the solution to both of these problems would be to force a reboot if the installer fails after the cow-store service has been started. WDYT? Thanks, Mathieu
