these 4 derivations will be built:
  /nix/store/lhzyiflh04n279ir36f4xlcx4fx563jn-test-script.drv
  /nix/store/9s0hgvxhy9db9g49ajkcrxv7avkivwyk-driverConfiguration.json.drv
  /nix/store/5zzhj6il7py3pxgywcrsb9f8238vxpp0-nixos-test-driver-pgmq-drop-queue-overload.drv
  /nix/store/hzw2z4z2cb3nl09r177h84fyzr6l70af-vm-test-run-pgmq-drop-queue-overload.drv