these 3 derivations will be built:
  /nix/store/y7r0435aghiahmi6wkdnyns54a2gp3kr-driverConfiguration.json.drv
  /nix/store/b3xic0i8rb10lsk9ac2w7qv2zh47x9sj-nixos-test-driver-nix-grpc-farm.drv
  /nix/store/mq2vh4rlidzwb94785z62gsn8j0dhqcj-vm-test-run-nix-grpc-farm.drv