nixpkgs dropped the default for `services.grafana.settings.security.secret_key`
and asserts on null, so the module I merged an hour ago fails the build on any
host that enables it. That is a broken deploy, not a warning.
Generated in-container like authelia's own keys and for the same reason:
nothing outside the container ever reads it. Generated ONCE and kept — the
key signs Grafana's stored datasource secrets, and rotating it does not
re-encrypt what it already encrypted, so a fresh key per boot would leave
Grafana unable to read its own database. Delivered as `$__file{}`, so it
never enters the store.
The gate missed this because a container is a separate NixOS evaluation with
its own assertions: forcing the host's `config.assertions` never touched the
container's. `state/eval-3265.sh` now forces
`containers.swarm-grafana.config.assertions` and reports any that fail.
859833b186