these 2 derivations will be built:
  /nix/store/kncq0g38473jc3xd9yx7gzdk5fi9x275-nix-grpc-store-0.2.0.drv
  /nix/store/j1wdf0ix6pbp2pngw1j6mvzs33qdvzd7-nix-grpc-store-dispatcher.drv