This script is supposed to only run on the Guix installer and checks
that it's the case through various ways.
Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>
This project is under the GPLv3 and not AGPLv3 in order to be able
to share code back and forth with Guix.
Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>