these 4 derivations will be built:
  /nix/store/7g07vkkhdf84zz13jxnlh2iq63bdyhl1-iets-0.1.0.drv
  /nix/store/xz3w8qsjv8z44g0awj4igdg370g7vz62-iets-fuzz-diff-0.0.0.drv
  /nix/store/3k0rwq93irq9vf27452qwn7vp2ccqn29-iets-conformance-adapter.drv
  /nix/store/ffwly4drvwpwlbxdlqqjsjfv7lgsfswr-nix-conformance-iets.drv