these 2 derivations will be built:
  /nix/store/4z33ihx1kg166y7xd2yn4k1lynpqrbb9-nix-grpc-store-0.2.0.drv
  /nix/store/7jgczlfi186m5djky8byk3nna2dbfv7i-nix-grpc-store-dispatcher.drv