This also fixes <https://issues.guix.gnu.org/63726>. * guix/scripts/pull.scm (show-help, %options): Add '-q'. (channel-list): Honor it. * guix/scripts/time-machine.scm (show-help, %options): Add '-q'. * doc/guix.texi (Invoking guix pull, Invoking guix time-machine): Document it. Reported-by: Simon Tournier <zimon.toutoune@gmail.com>