As reported by yelninei on IRC, Guix on the Hurd is in half-broken state following the recent ‘core-updates’ merge.
Specifically, sending store items over SSH (and thus breaks offloading too): --8<---------------cut here---------------start------------->8--- $ guix copy --to=localhost:10022 idutils guix copy: sending 1 store item (1 MiB) to 'localhost'... guix copy: error: unknown error while sending files over SSH --8<---------------cut here---------------end--------------->8--- (Here localhost:10022 is a childhurd.) Inside the childhurd, we get: --8<---------------cut here---------------start------------->8--- root@childhurd ~# tail -1 /var/log/guix-daemon.log 2024-09-09 21:09:03 unexpected build daemon error: stoi --8<---------------cut here---------------end--------------->8--- Last time we got that error was in commit 21deb89e287b5821975544118bf137562a91d4e1: guix-daemon was running with incorrect locale data, and thus ‘std::stoi’ would throw (‘std::stoi’ in guix-daemon is used for the communication with the ‘guix authenticate’ process, see ‘readAuthenticateReply’). When running guix-daemon by hand instead of via the Shepherd service, with the same environment variables, everything works, unless we set one of the LC_* variables. Ludo’.