these 2 derivations will be built:
  /nix/store/hd17grgbllrr7114a29mqb3z6iwcz95m-iets-conformance-adapter.drv
  /nix/store/i6m3lz4p1wvmsgxyqwwxxghwa7s2h7mz-nix-conformance-iets.drv