Hey Ludo,
> Wouldn’t it be enough to look for the latest completed evaluation (of a > given jobset)? I guess it would be enough but we would need to specify the jobset that needs to be used, this way maybe: --8<---------------cut here---------------start------------->8--- (define* (channel-with-substitutes-available chan url #:key (specification "master")) --8<---------------cut here---------------end--------------->8--- this would also allow me to simplify this patchset: https://issues.guix.gnu.org/47929. WDYT? Thanks, Mathieu