Hullo Guix, Here are two patches adding btrfs-progs to GuixSD and its installation image, respectively.
Actually booting from btrfs will likely need more changes[1] to an initrd that I don't yet grok. Kind regards, T G-R [1]: <http://thread.gmane.org/gmane.comp.gnu.guix.devel/12164>, although this patch was not based on that one.
