these 4 derivations will be built:
  /nix/store/h3ahavsf5vswql1wyl7ifb74c46h72ff-iets-0.1.0.drv
  /nix/store/iivfw6f0wibwi9768svwag09cws6rj52-iets-fuzz-diff-0.0.0.drv
  /nix/store/xlgxzj9259xd9w9hg105rb8gs03b6p5q-iets-conformance-adapter.drv
  /nix/store/zdrvnx5rh8f21yzvsb199lp25v1cxrcf-nix-conformance-iets.drv