these 2 derivations will be built:
  /nix/store/a7a7zpsi48wvkzgh51f2ri4nssgmzl3b-nix-grpc-store-0.2.3.drv
  /nix/store/19m176x7rihgxbyfqg90gqk88igqfkjq-nix-grpc-store-dispatcher.drv