these 2 derivations will be built:
  /nix/store/a2c7kkfymq6ad0nkpm8r3jcvgc1ffv5j-nix-grpc-store-0.1.0.drv
  /nix/store/qscmmmrkrgmca4s499s0c9m71g6pzlis-nix-grpc-store-dispatcher.drv