Nix configuration updates may require agent restart

[roberth]

Description

Metadata that's shared with the scheduler (ie hercules-ci.com) is only loaded on startup, so some nix.conf changes require a restart of the agent. This is not detected automatically.

To Reproduce

Add extra-platforms in NixOS. Agent does not change in dashboard.

Expected behavior

Agent picks up the Nix configuration change on the host and re-sends its info.

Logs

Platform / Version

Best to go to https://hercules-ci.com/dashboard and click on the agents' tab for the account you're interested in.
hercules-ci-agent --help version