these 2 derivations will be built:
  /nix/store/zq5ma0ygw4kydbdpjsjcvhqh0nzdqgjv-iets-conformance-adapter.drv
  /nix/store/zjbmhmrxxnfsbma11qnf1iqz7d4fh6p0-nix-conformance-iets.drv