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Published 20 hours ago • verified publisher icon marimo-team

[Islands] loading spinner not spinning

Open rambip opened this issue 1 month ago • 0 comments

Describe the bug

When opening a simple marimo page generated using islands, the loading widget at the top of the page is not spinning.

note: it seems that css variables are not defined, which causes issues:

Image

Will you submit a PR?

  • [ ] Yes

Environment

{
  "marimo": "0.17.7",
  "editable": false,
  "location": "/var/mnt/data/Proj/marimo-islands-bugs/.venv/lib64/python3.14/site-packages/marimo",
  "OS": "Linux",
  "OS Version": "6.17.7-300.fc43.x86_64",
  "Processor": "",
  "Python Version": "3.14.0",
  "Locale": "en_US",
  "Binaries": {
    "Browser": "--",
    "Node": "--"
  },
  "Dependencies": {
    "click": "8.3.0",
    "docutils": "0.22.3",
    "itsdangerous": "2.2.0",
    "jedi": "0.19.2",
    "markdown": "3.10",
    "narwhals": "2.10.2",
    "packaging": "25.0",
    "psutil": "7.1.3",
    "pygments": "2.19.2",
    "pymdown-extensions": "10.16.1",
    "pyyaml": "6.0.3",
    "starlette": "0.50.0",
    "tomlkit": "0.13.3",
    "typing-extensions": "missing",
    "uvicorn": "0.38.0",
    "websockets": "15.0.1"
  },
  "Optional Dependencies": {},
  "Experimental Flags": {}
}

Code to reproduce

To reproduce:

  1. Create a new marimo notebook named "simple.py"
  2. add just a cell, like print(1)
  3. convert it to a html page using a script like:
import asyncio

from marimo import MarimoIslandGenerator
from marimo._server.file_router import AppFileRouter
from marimo._utils.marimo_path import MarimoPath


async def main():
    path = MarimoPath("./simple.py")
    file_router = AppFileRouter.from_filename(path)
    file_key = file_router.get_unique_file_key()
    assert file_key is not None
    file_manager = file_router.get_file_manager(file_key)

    generator = MarimoIslandGenerator()
    stubs = []
    for cell_data in file_manager.app.cell_manager.cell_data():
        stubs.append(
            generator.add_code(
                cell_data.code,
                display_code=True,
            )
        )

    generator._stubs = stubs
    generator._config = file_manager.app.config

    _app = await generator.build()

    head = generator.render_head()
    body = generator.render_body()

    html = (
        f"""<!doctype html>
                <html lang="en">
                    <head>
                        <meta charset="UTF-8" />
                        <title> Marimo test website </title>
                        {head}
                    </head>
                    <body>
                        {body}
                    </body>
                </html>
                """
    ).strip()

    with open("simple.html", "w", encoding="utf-8") as f:
        f.write(html)


if __name__ == "__main__":
    asyncio.run(main())
  1. Launch a web server (python3 -m htp.server)
  2. open simple.html in the browser
  3. observe the spinner not spinning

rambip avatar Nov 08 '25 07:11 rambip