these 4 derivations will be built:
  /nix/store/1ygdfwrh75jjjdgfizlmam4wgxl16j71-iets-fuzz-diff-0.0.0.drv
  /nix/store/309kmlwimp622fca38m46zzaiyvvh0x2-iets-0.1.0.drv
  /nix/store/zjbasy976qi6jgr0yn25a5w2qwbjm5y2-iets-conformance-adapter.drv
  /nix/store/1gx3fq0jzm42kv2a987pfq1biv92pxvr-nix-conformance-iets.drv