these 2 derivations will be built:
  /nix/store/8ps9ccq85nsmlp6dzv3wcbm3ml9kz0wn-nix-grpc-store-0.1.0.drv
  /nix/store/slwiafg0dk648a1phvc23an59jf7y5zk-nix-grpc-store-dispatcher.drv