these 3 derivations will be built:
  /nix/store/04bppbaj0rhrjjfiiv5l9vbr4cfkyg1l-iets-0.1.0.drv
  /nix/store/gxyv6811hq9bz41v6svhwafhaxh6gasp-iets-conformance-adapter.drv
  /nix/store/ibsawcf672drqiqgsd51xqvcnfhszb2y-nix-conformance-iets.drv