these 2 derivations will be built:
  /nix/store/g8vxhfjqvkl8zq4104hi5xipf6fcmggm-nix-grpc-store-0.2.2.drv
  /nix/store/w6x1a77bcvz4gark8xj19ryzjn8pv3bj-nix-grpc-store-dispatcher.drv