these 4 derivations will be built:
  /nix/store/fam5106bhabdrsb8qf3cq7gw3hlcs08v-iets-fuzz-diff-0.0.0.drv
  /nix/store/wqsjay50cbm07xh9apvhdfgqwvirmyv7-iets-0.1.0.drv
  /nix/store/ch7vzzi8vqsbr6rrfmv2xlqcy2gqa897-iets-conformance-adapter.drv
  /nix/store/6nzvvd21ikxr145ighdnjjmi2lkszn7q-nix-conformance-iets.drv