services.peering-manager.environmentFile

Environment file as defined in systemd.exec(5).

Secrets may be passed to the service without adding them to the world-readable Nix store, by specifying placeholder variables as the option value in Nix and setting these variables accordingly in the environment file.

  # snippet of peering-manager-related config
  services.peering-manager.settings.SOCIAL_AUTH_OIDC_SECRET = "$PM_OIDC_SECRET";

  # content of the environment file
  PM_OIDC_SECRET=topsecret

Note that this file needs to be available on the host on which peering-manager is running.