these 3 derivations will be built:
  /nix/store/3wzyxihj3ybpz1kv3vvp53gjwa83j98y-iets-fuzzers-0.0.0.drv
  /nix/store/q1z24s89aq3wk4pjjjj89lh0blysk0wd-iets-fuzz-diff-0.0.0.drv
  /nix/store/xl2v3m53x1l0j27h8wbgqk1mf0z3zmpw-iets-fuzz-parse-check.drv