Commit 6680880f9b8dceb4f2f3f91bd2b13c659b53835e pushed out a new version of Guix, and it looks like it wasn't possible to build new systems from that because the filename for the "Berlin ACL key" changed. (Or at least, I couldn't run "guix system vm".)
I pushed out a "fix" for this. I hope it's ok. I'm presuming this was expected to change given ec4c404c0575b340a04b3922fb828ac5417832dd appearing to try to compensate in the other direction *before* the new "guix" package version was pushed. If I made things worse, sorry in advance. It fixes things here, but I don't know the full context of what was going on. - Chris
