these 3 derivations will be built:
  /nix/store/7qf85vqni9k9iqy8riph95zgvvm8kw5v-driverConfiguration.json.drv
  /nix/store/pzac91jf17bi0gjplsw2c6ck6mnfpvpf-nixos-test-driver-nix-grpc-farm.drv
  /nix/store/f3sgqk76z8m52d8qd0wilp73bgbhw5nb-vm-test-run-nix-grpc-farm.drv