these 4 derivations will be built:
  /nix/store/5rqqaq1sdgmlw510wqghq3x9pvsgbijx-iets-fuzz-diff-0.0.0.drv
  /nix/store/yq4scy5jpnrbfpx79qywzr97hl1ga0la-iets-0.1.0.drv
  /nix/store/qdb9hwhvjmfwfdal8m8fpsd6dkpj6351-iets-conformance-adapter.drv
  /nix/store/1wkrp0r5x66knpdgr6w9hsr6a366325j-nix-conformance-iets.drv