these 2 derivations will be built:
  /nix/store/d7g8viqcc0dfpq905j09g8kj5r60fhwx-iets-conformance-adapter.drv
  /nix/store/95wy0gw0qkjkb3130p937jdkq5y33qps-nix-conformance-iets.drv