these 4 derivations will be built:
  /nix/store/hn6qp3m7br041y7yj19qkg7i5n9rssf3-test-script.drv
  /nix/store/lqqba3dw862q0xm06pv74qa8fsaiqlyv-driverConfiguration.json.drv
  /nix/store/d72m50qgz7g272d78jpy52lxpqaqd9dj-nixos-test-driver-iets-cachetest.drv
  /nix/store/sybirnwid76qm7fwxfrpr708rjlb3jig-container-test-run-iets-cachetest.drv