This repository automatically generates custom installation images for the GNU Guix system. It is based on a similar project here and adds some additional configurations and packages and fixes an annoyance during installation in the mentioned project as described in this issue report that part doesn't seem to work yet.
It should be noted that this image contains the nonfree vanilla Linux kernel, so be warned if that's a problem for you.
You can take a look at the repo mentioned above for more information on how this works.
Thanks for reading!