these 4 derivations will be built:
  /nix/store/8cmd4rn49089cxi1bd70p7xapm9jb3pm-iets-0.1.0.drv
  /nix/store/zmc7rldgli4mlm9qll0w1hq3f32zzdxc-iets-fuzz-diff-0.0.0.drv
  /nix/store/yjhmqbv43s2355hk3w1qbxx09wda6ckh-iets-conformance-adapter.drv
  /nix/store/32rlwbv370303vh87cwa40gvccfhd62r-nix-conformance-iets.drv