these 2 derivations will be built:
  /nix/store/8v2ipyra23as54lf9r2y76s75lrq0dmi-nix-grpc-store-0.2.2.drv
  /nix/store/2y843zmbgspaq2k95yphah1k3wnq5w8i-nix-grpc-store-dispatcher.drv