nixos-config/modules/server/hydra.nix

{ config, lib, extraInfo, ... }:
with lib;
{
  options.server.builder.enableHydra = mkOption {
    type = types.bool;
    default = false;
    example = true;
  };

  config = mkIf config.server.builder.enableHydra {
    services.hydra = {
      enable = true;
      hydraURL = "http://localhost:3000";
      notificationSender = "hydra@localhost";
      buildMachinesFiles = [ ];
      useSubstitutes = true;
    };

    services.nginx.virtualHosts.${extraInfo.hydraURI} = mkIf config.services.nginx.enable {
      enableACME = true;
      forceSSL = true;

      locations."/" = {
        recommendedProxySettings = true;
        proxyPass = config.services.hydra.hydraURL;
      };
    };
  };
}