these 4 derivations will be built:
  /nix/store/74g9qkpg4ngyq4zkwywjbp48w2flnyg8-iets-fuzz-diff-0.0.0.drv
  /nix/store/958c2h7sq6nppvpnblfw40lxhb0d05rm-iets-0.1.0.drv
  /nix/store/9cc974d05z9x1hhj9ilyyib6qf9ny2n7-iets-conformance-adapter.drv
  /nix/store/g1m7gv3mnmz82qzwnxg0w8cs8lvi0bc3-nix-conformance-iets.drv