blueprint-compiler/tests/samples/list_factory_nested.blp

using Gtk 4.0;

Gtk.ListView {
  factory: Gtk.BuilderListItemFactory list_item_factory {
    template ListItem {
      child: Gtk.ListView {
        factory: Gtk.BuilderListItemFactory list_item_factory {
          template ListItem {
            child: Gtk.Label {
              label: bind template.item as <$MyObject>.name;
            };
          }
        };
      };
    }
  };
}