these 4 derivations will be built:
  /nix/store/7dwmazc5yl2imrsp9ypdqzqxy0nnr5fl-iets-fuzz-diff-0.0.0.drv
  /nix/store/v5nd59nakv3ls3svaigc6jgwwp45whpb-iets-0.1.0.drv
  /nix/store/g0zca2v1lwirfdvqchln16ynwky5b6zb-iets-conformance-adapter.drv
  /nix/store/s7cxf3sc229qbnbi99yz3k1wyw785y79-nix-conformance-iets.drv