these 3 derivations will be built:
  /nix/store/fahacnsnv24h79fyx19jn9cjmqfd4lh4-iets-0.1.0.drv
  /nix/store/ga5rvcjh79s43n90x5z9f9knsygpqzs2-iets-conformance-adapter.drv
  /nix/store/dijw38jjwd176146i1rar0h0qxg511q6-nix-conformance-iets.drv