these 2 derivations will be built:
  /nix/store/ghafs1x79vmqixxvpcdvwjrqw7wqnrq8-nix-grpc-store-0.2.1.drv
  /nix/store/4vp83xgki4xhhr8inpj8ydx2w3v2yjgw-nix-grpc-store-dispatcher.drv