On Tue, Jul 17, 2018 at 11:42:18AM +0200, Pjotr Prins wrote: > Also, using a year old guix client gives the same error. It is in the > daemon. And running an older daemon fixed it: /gnu/store/4lk7j5693ikj7yiw2qpsbva5vkicxmp4-guix-0.14.0-13.7af5c2a/bin/guix-daemon --build-users-group=guixbuild