anchor.diff:        machine.succeed(
             "journalctl -eu zigbee2mqtt | grep \"Error: Error while opening serialport 'Error: Error: No such file or directory, cannot open /dev/ttyACM0'\""
         )
  +
  +      machine.log(machine.succeed("systemd-analyze security zigbee2mqtt.service"))
       '';
     }
   )
  
positive.code: import ./make-test-python.nix ({ pkgs, ... }:
  
    {
      machine = { pkgs, ... }:
  
negative.code:         services.zigbee2mqtt = {
            enable = true;
          };
  
          systemd.services.zigbee2mqtt.serviceConfig.DevicePolicy = lib.mkForce "auto";
        };
  
      testScript = ''
  