these 2 derivations will be built:
  /nix/store/45ymvbpjmracgjcnya8q8p7pv21q1xkj-iets-conformance-adapter.drv
  /nix/store/jvyc9a9y1z4v2qjxac0pzh48psn3x4jr-nix-conformance-iets.drv