Hi, I (and a friend too) have been getting an infinite reboot loop when trying to boot into guix system. Going back a generation fixes it, but doesn't solve the issue as I cannot upgrade guix any further.
I could bisect the issue to e3459bff0039fbaaaf521fb8c8d406dc29986a8e. I don't know what causes it, but I don't have such '/run/privileged/bin/sendmail' file in my system (and, quiet honestly, I don't want to have it, to keep the system minimal). It worked just fine before that commit, and I can confirm that reverting it on latest guix solves the issue for me.
