I actually couldn't get encryption to work for my on my librebooted machine. I re-installed with just 1 unencrypted ext4 machine, and now I can use guix system. Not really a fix I know, but you might give that a try.
-- Joshua Branson Sent from Emacs and Gnus https://gnucode.me https://video.hardlimit.com/accounts/joshua_branson/video-channels "You can have whatever you want, as long as you help enough other people get what they want." - Zig Ziglar