these 4 derivations will be built:
  /nix/store/gh89mfggkjlwvibzybis63x6f7cmhf1h-iets-0.1.0.drv
  /nix/store/xh2yv5n3qns9j2cy0ifyfzgn6binvrw1-iets-fuzz-diff-0.0.0.drv
  /nix/store/x1h7gvc9hhxm9j04wc03fjqxvqkr2vh8-iets-conformance-adapter.drv
  /nix/store/cs2ig18s1ry940xkxc90bkvkfjs5pl5m-nix-conformance-iets.drv