Otherwise, users will be stuck running an old copy of guix and the guix-daemon if they copy the service files instead of symlinking them. * etc/guix-daemon.conf.in, etc/guix-daemon.service.in, etc/guix-publish.conf.in, etc/guix-publish.service.in: Expand @localstatedir@ instead of @bindir@. * nix/local.mk (etc/guix-%.service, etc/guix-%.conf): Use @localstatedir@ instead of @bindir@.