these 2 derivations will be built:
  /nix/store/ycia4vqamyrp13685z8ya9s1kl0b0ylf-nix-grpc-store-0.1.0.drv
  /nix/store/hq9nlkd7vjikvqzikr75cyiriqnf3s97-nix-grpc-store-dispatcher.drv