these 4 derivations will be built:
  /nix/store/5ifcjwgq1rgqjh3g45m24rpgy63qkbv5-iets-0.1.0.drv
  /nix/store/pprfh7wfs9irrinfvbvzs4w4fpky3nhx-iets-fuzz-diff-0.0.0.drv
  /nix/store/842b55djicwmw30k2f23dk92m2jap65m-iets-conformance-adapter.drv
  /nix/store/2lixi8zpwjifpdhh51wq7ngv9y9vr1mz-nix-conformance-iets.drv