these 2 derivations will be built:
  /nix/store/lywsr47m9l0lrxmwkw7ff4vw4j9vmwxl-nix-grpc-store-0.1.0-beta.3.drv
  /nix/store/x4wqfv1apg0iv0sg51xz3vam8hj8p6pi-nix-grpc-store-dispatcher.drv