these 2 derivations will be built:
  /nix/store/v61101mbi0slpb9a76cpm2d3nm7i4zq0-nix-grpc-store-0.1.0.drv
  /nix/store/qq5n503l1mkaxjh1dy58j75rdhqspcqf-nix-grpc-store-dispatcher.drv