these 2 derivations will be built:
  /nix/store/knajkkmycyg2wcvmn8ssjcr5vqf97j8s-nix-grpc-store-0.2.2.drv
  /nix/store/9zk2wcws5rljhj1c52i5rcygggmrxwmv-nix-grpc-store-dispatcher.drv