these 4 derivations will be built:
  /nix/store/9fd6i0dr7arbvs0nrmkykh8jgyrlavk0-iets-fuzz-diff-0.0.0.drv
  /nix/store/nlyi9jfb5nbcy3avnwv968d8c4llaall-iets-0.1.0.drv
  /nix/store/nf1ipk1qii99h6vf6h9v0c5f0sjhfrkd-iets-conformance-adapter.drv
  /nix/store/fmga3nq28k92vwz8pw8ar9ndkjn24yb7-nix-conformance-iets.drv