these 4 derivations will be built:
  /nix/store/h1x4kk8gq8dbr99svj6zbyc5wzsz0b45-iets-fuzz-diff-0.0.0.drv
  /nix/store/shy1mlmgibjc9ip0h2b5v5zdsnlx8hcm-iets-0.1.0.drv
  /nix/store/5a1cp7pidgn2pkm8akzjirbbjhd1g2f7-iets-conformance-adapter.drv
  /nix/store/h5qihcsbkb0ybwpg5gqka40gjc6wzbqn-nix-conformance-iets.drv