these 2 derivations will be built:
  /nix/store/hz15kakhgapdgnczs20zqkgiab8gcxaf-iets-deps-0.1.0.drv
  /nix/store/yyl8k9bdjpfs2d1d9m18jb00pqpza5sj-iets-clippy-0.1.0.drv