these 4 derivations will be built:
  /nix/store/dd3l96w09pv9kgv0q88swzwwq9gbd1m4-nixos-vm.drv
  /nix/store/dmlis8p2js60yglagmq45hw6570h74am-driverConfiguration.json.drv
  /nix/store/smybb6qa0649lbjf6mny96ws1lgkwap0-nixos-test-driver-nix-grpc-farm.drv
  /nix/store/4pf6zisajdi8bjm0jaym8nrlspjgaz5p-vm-test-run-nix-grpc-farm.drv