these 2 derivations will be built:
  /nix/store/ylg2j4c4iv7g97m83z4pgzrfvmk11ga5-iets-conformance-adapter.drv
  /nix/store/p4gcgq91v04dqdj4wn86jjy11jdvmzml-nix-conformance-iets.drv