these 3 derivations will be built:
  /nix/store/4x2s69fanbh4lfrf2pzb70xahcz7qfm4-driverConfiguration.json.drv
  /nix/store/7nr774hbwph8x21s1azzl18h9kaakhn6-nixos-test-driver-nix-grpc-store-main.drv
  /nix/store/ff44b31l2ndlrcj25wyzb9vywllf19xn-vm-test-run-nix-grpc-store-main.drv