these 3 derivations will be built:
  /nix/store/xhpz8ys75dkxfpsi8ifdnafz01k0m7nk-driverConfiguration.json.drv
  /nix/store/vgkpxsskyrcsf051rlv3xwhyzmnhl1bk-nixos-test-driver-nix-grpc-farm.drv
  /nix/store/3bvslgilnmscl0z81sj4cjbvf3g9h5mm-vm-test-run-nix-grpc-farm.drv