these 4 derivations will be built:
  /nix/store/267rj47rsc82k0brdzrs4g0p0w9h7qvv-iets-0.1.0.drv
  /nix/store/5fgrxcz2g1mlzjarmybi3d7mfjdi8qng-iets-fuzz-diff-0.0.0.drv
  /nix/store/sfvdcl1cwv3y22yp7ibvy242s751l685-iets-conformance-adapter.drv
  /nix/store/70b69v2pib3xsdgnibiwsmi1q0174i2v-nix-conformance-iets.drv