these 3 derivations will be built:
  /nix/store/y2nb4bxdj2xmj9fx8ay041m4ak0vv1pa-driverConfiguration.json.drv
  /nix/store/6r7ypf2f5rhy4147fjb343vb13qbcd1k-nixos-test-driver-nix-grpc-farm.drv
  /nix/store/lsgjyv001yygw4ls67avaak3va52y82p-vm-test-run-nix-grpc-farm.drv