these 4 derivations will be built:
  /nix/store/6lnir16xzq21kfazgnw2s976pcg3bjcl-iets-fuzz-diff-0.0.0.drv
  /nix/store/pd3i1rysm85w2bi3iasxp701qj7x349d-iets-0.1.0.drv
  /nix/store/9k2gqsfdgh59xr32m8wa7nr19kq4vbf0-iets-conformance-adapter.drv
  /nix/store/gaqadnzp16zflbgwh06vwm14ir4slz4q-nix-conformance-iets.drv