Dear guix, When I boot my system on core-updates-frozen, I get an error message: /gnu/store/xxx-openresolv-3.12.0/sbin/resolvconf: line 824: mkdir: command not found Failed to create needed directory /var/run/resolvconf I didn’t experience any DNS issue, but my network is simple on that machine. In any case, I think it would do no harm to wrap resolvconf to set its path to the coreutils so that it can find mkdir and rm. I didn’t find resolvconf to invoke any other program. What do you think? Best regards, Vivien