these 2 derivations will be built:
  /nix/store/qbnmp950asj93b9rby0sc2lwzc6l08dj-iets-fuzzers-0.0.0.drv
  /nix/store/460dfhjbsc6zxmxcgvyfpaim61p5g7hf-iets-fuzz-parse-check.drv