these 4 derivations will be built:
  /nix/store/2cqryy5m6n572p4iyryp21q64p11j8z0-iets-0.1.0.drv
  /nix/store/fk4smvhpq4cijd4z7w2k5ir69kcqqhc0-iets-fuzz-diff-0.0.0.drv
  /nix/store/rdl7208b1hw53abn7g7m4lrimq8r007w-iets-conformance-adapter.drv
  /nix/store/2djdqhmjfskc49zaiwy29nrzb2cl7qrs-nix-conformance-iets.drv