add workaround demo for shinyswatch theme picker error

demo_projects/shinyswatch_error/workaround.py

@@ -0,0 +1,34 @@
+from shiny import App, ui, Inputs, Outputs, Session, reactive, render
+import shinyswatch
+
+app_ui = ui.page_auto(
+    ui.output_ui("main_page"),
+    ui.input_action_button("change_nav", "Change Nav"),
+    theme=shinyswatch.theme.darkly,
+)
+
+
+def server(input: Inputs, output: Outputs, session: Session):
+    nav_state = reactive.value(1)
+
+    @reactive.calc
+    def nav_items():
+        return [
+            ui.nav_panel(f"Page{i}", ui.markdown(f"# Page{i}"))
+            for i in range(nav_state.get())
+        ]
+
+    @render.ui
+    def main_page():
+        shinyswatch.theme_picker_server()
+        return ui.navset_pill_list(
+            *nav_items(), ui.nav_control(shinyswatch.theme_picker_ui())
+        )
+
+    @reactive.effect
+    @reactive.event(input.change_nav)
+    def change_state():
+        nav_state.set(1 if nav_state.get() == 2 else 2)
+
+
+app = App(app_ui, server)