container filesystems

[qknight]

description

the patch 214e7ff is a hacky fix for a more complex underlaying issue with the profile switch.

IIRC we had been looking into this but didn't come up with a working solution. it seems that the remount or mount of the container filesystems, issued by the switch-to-generation program used by nixos-rebuild switch fails with error code 2 instead of 0.

so this means: altough the switch works it still produces error code 2 and this needs to be taken care of.