these 4 derivations will be built:
  /nix/store/281v7yajwn8x977hc7ypzby516hn6nz0-iets-0.2.0.drv
  /nix/store/4kcngz6q6wqvlbxdilwwbh3imy2fypxk-iets-fuzz-diff-0.0.0.drv
  /nix/store/fc9zn3jzcnqm75yq52x9i4wqfmr8l1vj-iets-conformance-adapter.drv
  /nix/store/a76jia3cm14m1cgy021sz11w1aa2j78b-nix-conformance-iets.drv