these 2 derivations will be built:
  /nix/store/s9hlxl2sjvwnf4zjr1ky34avfmkd39nq-iets-conformance-adapter.drv
  /nix/store/m9gmm3v1yisyr8dlrn5vj5shwwwpnp72-nix-conformance-iets.drv