Hello,
A lot of builds, among them ~20 system tests[1], are failing with: "cannot build missing derivation ?/gnu/store/hs6kp1lqgymhyp3jndc0dsp0pn4psgv0-gui-installed-desktop-os-encrypted.drv?" errors. Those derivations are present on the CI head node. This means that the errors occur during substitution. This is most likely caused by some issue with the publish server, because: - The publish server serves a 404 error. We should get rid once and for all of this 404 thing, pushing something like: https://issues.guix.gnu.org/50040. or - The publish server is not fast enough and hits an Nginx timeout that closes the communication. Any other cause I could be missing? Thanks, Mathieu [1]: https://ci.guix.gnu.org/eval/159975?status=failed
