these 3 derivations will be built:
  /nix/store/xw2m47p6say0hvpq7qlvyq28dl8vjqal-driverConfiguration.json.drv
  /nix/store/wb5lx1h3mqwr0dxp74ilrgr4jmbl3f9v-nixos-test-driver-nix-grpc-store.drv
  /nix/store/4pbqfff0fbszv86hfica3hpzjgfpgs5g-vm-test-run-nix-grpc-store.drv