these 3 derivations will be built:
  /nix/store/9ypwzhq2lqbmz5g2qpzcc9j7pzwqfq80-iets-fuzz-diff-0.0.0.drv
  /nix/store/vchq7mbkh8jvli5np2snp72m66axbmxk-iets-fuzzers-0.0.0.drv
  /nix/store/ivdpdl2hx2l1zgmj3czqhj3zccbbrxzd-iets-fuzz-parse-check.drv