these 3 derivations will be built:
  /nix/store/wcdwk83pxyvcjiz0c8wjwclvj9pc7grj-driverConfiguration.json.drv
  /nix/store/2cjp5d7mm7pvgls3zk0jwvkv1i0xsa25-nixos-test-driver-nix-grpc-store-acme-substituter.drv
  /nix/store/spd0dzxw65kfwn60zaki44qf4w84w1fj-vm-test-run-nix-grpc-store-acme-substituter.drv