these 2 derivations will be built:
  /nix/store/cv2wfdjfgb3zfzc5kfky0291276h9m03-iets-conformance-adapter.drv
  /nix/store/0rilgrqpcak5dkxlbqnvw3l0fh3avqgv-nix-conformance-iets.drv