Hello Maxime,
> guix substitute: warning: [...].local: host not found: Naam of dienst is niet > bekend > guix substitute: warning: tijdens het binnenhalen van > https://ci.guix.gnu.org/nar/lzip/r8a9kzhhx89rmmkz66i3324acgliqdwa-gdm-3.34.1: > de server is een beetje traag > guix substitute: warning: probeer ‘--no-substitutes’ als het probleem > hardnekkig is > guix substitute: error: connect*: Verbinding is verlopen There are actually two bugs withing a single one here. The first one is that you could not connect to the berlin publish server in less than 5 seconds (the timeout duration). I have already observed such problems on the build farm and reported it here: https://issues.guix.gnu.org/48468. It has been mitigated by implementing keep-alive support[1]. However, I suppose that the underlying issue is that guix-publish is in some cases over-flood and fails to accept new connections. > As I specified the --fallback option, I would expect guix to start > building from source, as the substitution failed. The second issue is that as you noticed, the fallback option doesn't have any effect. Thanks, Mathieu [1]: https://issues.guix.gnu.org/48556
