I did a full rebuild before submitting this bug: bootstrap -> configure -> make clean -> make.
FWIW, I still have the issue with ‘pre-inst-env’ when not run from within ‘guix shell -D guix’, which is a step I have never previously needed. As I just explained on IRC: --8<---------------cut here---------------start------------->8--- <bjc> i'm confused why it's suddenly a problem, though. i've never needed to use ‘guix shell’ with pre-inst-env before [15:41] <bjc> ludo says it's libgit2 linking against an old libc, but i have no idea how that's even possible <bjc> for one thing: my system has been reconfigured. all my packages are now running core-updates, and that includes libgit2. for another: doesn't libgit link with a specific path in /gnu/store, so it'll use whatever glibc it needs regardless of what's in my “system” configuration? --8<---------------cut here---------------end--------------->8--- Even if this is some particular problem to my build environment somehow, I'd love an explanation as to what's going on because I'm extremely confused. In case it matters, I've re-run ‘system reconfigure’ and ‘home reconfigure’ since moving to core-updates, thinking maybe there's some bootstrapping issue. I'm now 2 system and home generations into core-updates, but I have the same problem. Thanks,