these 2 derivations will be built:
  /nix/store/h4x222hb81z1dgrlyav9jmqgci6g1pwp-harmonia-deps-3.1.0.drv
  /nix/store/0ivcca36r4yzimxsarylcivg6xvgsn4x-harmonia-3.1.0.drv