Issue deploying modular apps

[davidrsch]

Hello I am giving a try to shiny for python and shinylive for python and have found some issues when deploying modular apps. I have created the following app as an example, you can see that is properly deployed to gh-pages when using shinylive, and is also woeking properly when clicking on the run button at Positron. The issue comes when I try to deployed using shinylive locally or as is in Posit Connect cloud. In both cases I receive the same error message:

from modules.counter_module import counter_ui, counter_server
ModuleNotFoundError: No module named 'modules'

[gadenbuie]

The issue comes when I try to deployed using shinylive locally

Could you clarify what you mean by "deployed using shinylive locally"?

or as is in Posit Connect cloud. In both cases I receive the same error message:

For Posit Connect Cloud, I can get your app to deploy if I create a manifest.json file for it locally. Here's the command I ran (using uv)

uvx --from rsconnect-python --with shiny -p 3.12 rsconnect write-manifest shiny app/

After that the app deployed to Posit Connect Cloud. (I'll be sharing this issue with the Connect Cloud team since it seems less-than-ideal that the manifest.json is required for this kind of app to work.)

Edit: If you run uvx --from rsconnect-python rsconnect write-manifest shiny by itself, rsconnect won't include shiny because it's not installed in the temporary venv created by uvx for the command. Make sure you include --with shiny if you use this command.

[davidrsch]

By "deployed using shinylive locally" I meant executing:

shinylive export app docs
python3.12 -m http.server --directory docs --bind localhost 8008

I specied python 3.12 because I have multiple python vesions in my pc, and the result is:

Even though the app.json in docs looks like this:

[
  {
    "name": "app.py",
     "content": "from shiny import App, ui\nfrom modules.counter_module import counter_ui, counter_server\n\n# Main app UI\napp_ui = ui.page_fluid(\n    ui.h2(\"Demonstration of Shiny Modules\"),\n    ui.row(\n        ui.column(6,\n            ui.card(\n                \"Counter 1 (increments by 1)\",\n                counter_ui(\"counter1\", increment=1)\n            )\n        ),\n        ui.column(6,\n            ui.card(\n                \"Counter 2 (increments by 10)\",\n                counter_ui(\"counter2\", increment=10)\n            )\n        )\n    )\n)\n\n# Main app server\ndef server(input, output, session):\n    # Initialize counter modules with different configurations\n    counter_server(\"counter1\", increment=1)\n    counter_server(\"counter2\", increment=10)\n\napp = App(app_ui, server)", 
     "type": "text"
  },
  {
     "name": "modules\\__init__.py",
     "content": "",
     "type": "text"
  },
  {
     "name": "modules\\counter_module.py",
     "content": "from shiny import ui, module, render, reactive\n\n# Module UI function\[email protected]\ndef counter_ui(increment):\n     # Create namespace for IDs\n    return ui.div(\n        ui.input_action_button(\"button\", f\"Add {increment}\"),\n        ui.output_text(\"value\"),\n        ui.tags.br(),\n        ui.output_text(\"total_clicks\")\n    )\n\n# Module server function\[email protected]\ndef counter_server(input, output, session, increment):\n    @reactive.calc\n    def count():\n        return input.button() * increment\n\n    @output\n    @render.text\n    def value():\n        return f\"Current value: {count()}\"\n    \n    @output\n    @render.text\n    def total_clicks():\n        return f\"Number of clicks: {input.button()}\"",
     "type": "text"
  }
]

Which evidentiate that the structure is properly exported but for some reason modules folder doesn't get recognized as a module even though it has init.py in it