these 4 derivations will be built:
  /nix/store/7s1hcljln6lk7hlvlclg3nq5r3nffvhh-iets-0.1.0.drv
  /nix/store/bbxylwvxmm5crq1xhfjl30vclkw8wkkr-iets-fuzz-diff-0.0.0.drv
  /nix/store/hjz9p09ih416lcdwp052b1ngwzd60vbj-iets-conformance-adapter.drv
  /nix/store/kqgarw9b4053960gjc2ic7z36vk52ka7-nix-conformance-iets.drv