Hi, I'm afraid, I'm late to the discussion and I don't find the thread about it in the archives. But I want to share me experience as a "user": I'm in strong favor of putting the system-configuration used to build the disk-image into the disk-image. Yesterday I wanted to give the provided QEMU-image a try (I'm still using guix on a foreign distro) and play with the system-config. Being a "newbie" to GuixSD it would be a great starting-point for experiments. But I did not find it? There seems to be no system-config.scm in /etc, so I would have to start from scratch  - which is not that encouraging :-( Just my 42 cent -- Regards Hartmut Goebel | Hartmut Goebel | h.goebel@crazy-compilers.com | | www.crazy-compilers.com | compilers which you thought are impossible |