these 2 derivations will be built:
  /nix/store/65d31rvbzpryhzdswymc7xgp4kv9bsky-nix-grpc-store-0.1.0.drv
  /nix/store/1dw0xsnvfqmrcyvp2qyxi5zhmn8zb64d-nix-grpc-store-dispatcher.drv