these 2 derivations will be built:
  /nix/store/49f0n6x3xbhfcblka0xqxwm6ygdviy4c-iets-conformance-adapter.drv
  /nix/store/s75dr4l77jkqwjnrlpkrbxayx8hygrvc-nix-conformance-iets.drv