these 4 derivations will be built:
  /nix/store/6gmkz9bdxijh5488wr8n8ih76w8x5sa0-iets-fuzz-diff-0.0.0.drv
  /nix/store/9pgy5ash96ndv9jn9zvy0z47lqwk59xh-iets-0.1.0.drv
  /nix/store/p6hgbba2jjk2x4qspwk8qdk68ydnk9yy-iets-conformance-adapter.drv
  /nix/store/dwryx3s9r12myy38y8ynp4msvrjf6rr4-nix-conformance-iets.drv