Hi! I just noticed an error in my initial message. The mentioned 'reconfigure' in the VM did not happen after the 'pull', but before (I did not expect being on an 'old' commit, right after entering the 'fresh' machine for the first time, so I thought this might help -- that's how I found the 'bug'). However, the situation persists also pulling to 6cae4e. Might this have something to do with 'guix system image' deliberatly starting with guix a27e4? After running the initial command as user (I see guix a27e4 being pulled there): image=$(guix system image --image-type=qcow2 --image-size=10G --save- provenance vm-configs/nextcloud-barebone.scm) A second execution of this command from the (updated) root guix, there does not seem to happen any computation, which I would expect if it would pull another guix. Sorry for the possibly misleading intro & best, Daniel