these 4 derivations will be built:
  /nix/store/k8c4r7wikdpval13jy7q578zmsawidd1-iets-0.1.0.drv
  /nix/store/w2kckas199wyz03ic2d6r49yjj6vy8qx-iets-fuzz-diff-0.0.0.drv
  /nix/store/p4j61fqcbdbwfk3cwczs93qv3v1n2lf8-iets-conformance-adapter.drv
  /nix/store/9ylsx7lv95z6185ms2hf63pk7y37qhag-nix-conformance-iets.drv