these 2 derivations will be built:
  /nix/store/4i8zahladxxs0p01bcbpfvz23c9ms8vs-nix-grpc-store-0.2.0.drv
  /nix/store/31hckppyik35277q47qn5qssl0zz6ai9-nix-grpc-store-dispatcher.drv