{ lib, pkgs, config, ... }:
{
  services.grafana.provision.datasources.settings.datasources = [
    {
      name = "VictoriaMetrics";
      uid = "vm-datasource-uid"; # Stable UID for referencing in alerts
      type = "prometheus";
      url = "http://localhost:8428"; # URL of VictoriaMetrics
      access = "proxy"; # Grafana proxies requests
      isDefault = true; # Optional: make this the default datasource
      jsonData = {
        # timeInterval = "30s"; # Optional: Scrape interval if different from Grafana's default
        # httpMethod = "POST"; # Optional: if VictoriaMetrics prefers POST for queries
      };
      editable = false; # Recommended for provisioned datasources
    }
  ];
}