these 3 derivations will be built:
  /nix/store/jmlgbfhxakpsknn35cwl1v4r04fqzkc1-driverConfiguration.json.drv
  /nix/store/fkp9rz33qvv2iqsf0zdj2dxhknv5xhns-nixos-test-driver-nix-grpc-farm.drv
  /nix/store/pnk6ngw73kmafap5qi74g3dal9c1s4dc-vm-test-run-nix-grpc-farm.drv