these 4 derivations will be built:
  /nix/store/wm4gqh01ic0wyqgqy03hcplazvmj53zg-test-script.drv
  /nix/store/fb90kwlqbw00s77bwrxjxpx1w87sa2pi-driverConfiguration.json.drv
  /nix/store/l35af14xzplqyaxrn45m28bad0jkrmw0-nixos-test-driver-iets-cachetest.drv
  /nix/store/5hg0m91cgis05sdnjvayn1hnr45jh9b0-container-test-run-iets-cachetest.drv