these 2 derivations will be built:
  /nix/store/fdxl6ljpywj7j9h9agdhd8ys541kvjdg-nix-grpc-store-0.2.2.drv
  /nix/store/qddaqy3iabwcdhr5lzlsxndf9zvwly2k-nix-grpc-store-exit-stress.drv