these 4 derivations will be built:
  /nix/store/f9aj4nynmxff3cjq0x8kmd9gx55kpcyq-iets-fuzz-diff-0.0.0.drv
  /nix/store/nhqzzvbzj7i598g9ka3pmg0kv9na7bxx-iets-0.1.0.drv
  /nix/store/83cpfvfaiahr0fg2kmscs6ph9z1mhpn0-iets-conformance-adapter.drv
  /nix/store/gasm9k4zhn44yafiiw03ygdn0b100ir2-nix-conformance-iets.drv