these 2 derivations will be built:
  /nix/store/cikii8iy4qlil180agibf82485a0gxgx-iets-conformance-adapter.drv
  /nix/store/g9cjsqkrjc4xy1aafy8grd0n8ypgqq4r-nix-conformance-iets.drv