these 2 derivations will be built:
  /nix/store/jcflbwj9xgg9lc8nwb4b7l388n8kzqb9-nix-grpc-store-0.2.3.drv
  /nix/store/bh60i8ailsw3sf7jixbx0m831q0n5122-nix-grpc-store-dispatcher.drv