these 2 derivations will be built:
  /nix/store/qz73ymvp00crlls9i9jwd5ayd38m99ak-nixos-test-driver-pgjwt.drv
  /nix/store/fx6xy3n7n9104kfl8wh4j4nl3ccj38d2-vm-test-run-pgjwt.drv