these 4 derivations will be built:
  /nix/store/g6ibcvz0lnn8jxsz0697i86200p2wffr-test-script.drv
  /nix/store/hhpy098qdpbvah117k9i7pha92sf18ly-driverConfiguration.json.drv
  /nix/store/8qdi8qa06x203h918ffysryd0mf1rnha-nixos-test-driver-iets-cachetest.drv
  /nix/store/xl6h84jah8vbq4dka9avr4zavc45dxp9-container-test-run-iets-cachetest.drv