these 4 derivations will be built:
  /nix/store/6mzwgpp0d80d9089wfrsmzydz8z0cjpi-iets-fuzz-diff-0.0.0.drv
  /nix/store/gvc5fjy027zy7ql1w7wz8lg6qyvsji9z-iets-0.1.0.drv
  /nix/store/k3li7fbyzrhdncr1331ziqnlj5yhjrg2-iets-conformance-adapter.drv
  /nix/store/7g9h0hy1kfga318zava9n2d8xwa93hgg-nix-conformance-iets.drv