these 4 derivations will be built:
  /nix/store/8p39cwnybirc22jiyyqc116cp3plsj2w-iets-fuzz-diff-0.0.0.drv
  /nix/store/xnl9nd48qmvg76kzcr6n5zbj5h4yxfwi-iets-0.1.0.drv
  /nix/store/9qm7iwwfb9k3z5j2wd1cz4cdb3jq947d-iets-conformance-adapter.drv
  /nix/store/wapz8z5y4wsxghxvwkhr3169x2s7l3jx-nix-conformance-iets.drv