Unify JupyterLite Install Instructions

[michaelweinold]

Description

Instructions on installing Panel in a (Pyodide-based) JupyterLite environment are presently both outdated and broken.

There are two different outdated scripts (for Panel versions <1.0.0) at:

• Setting up JupyterLite
• Installing Panel in the browser

If I try to install those into a JupyterLite Pyodide environment, I get:

await micropip.install("https://cdn.holoviz.org/panel/0.14.0/wheels/panel-0.14.0-py3-none-any.whl", keep_going=True)

ValueError: Can't fetch wheel from 'https://cdn.holoviz.org/panel/0.14.0/wheels/panel-0.14.0-py3-none-any.whl'.
One common reason for this is when the server blocks Cross-Origin Resource Sharing (CORS).
Check if the server is sending the correct 'Access-Control-Allow-Origin' header.

On the other hand, if I try to install the Bokeh and Panel py3-none-any wheels directly from pip, I get an error related to python packages that have not yet been compiled for WASM:

micropip.install("https://files.pythonhosted.org/packages/56/98/da78cec88a7c47b761c9b3a18677b5508ef17417184396b3d1361fc811f1/bokeh-3.2.0-py3-none-any.whl", keep_going=True)

File /lib/python3.11/site-packages/micropip/_micropip.py:580, in install(requirements, keep_going, deps, credentials, pre)
    578 if transaction.failed:
    579     failed_requirements = ", ".join([f"'{req}'" for req in transaction.failed])
--> 580     raise ValueError(
    581         f"Can't find a pure Python 3 wheel for: {failed_requirements}\n"
    582         f"See: {FAQ_URLS['cant_find_wheel']}\n"
    583     )
    585 wheel_promises = []
    586 # Install built-in packages

ValueError: Can't find a pure Python 3 wheel for: 'contourpy>=1', 'tornado>=5.1'
See: https://pyodide.org/en/stable/usage/faq.html#micropip-can-t-find-a-pure-python-wheel

micropip.install("https://files.pythonhosted.org/packages/90/a3/cc9cfdf1b18e5456a0ebd9370baa0a5d58501b4904fa3b3d1ecccbdbd1a2/panel-1.1.1-py2.py3-none-any.whl", keep_going=True)

File /lib/python3.11/site-packages/micropip/_micropip.py:580, in install(requirements, keep_going, deps, credentials, pre)
    578 if transaction.failed:
    579     failed_requirements = ", ".join([f"'{req}'" for req in transaction.failed])
--> 580     raise ValueError(
    581         f"Can't find a pure Python 3 wheel for: {failed_requirements}\n"
    582         f"See: {FAQ_URLS['cant_find_wheel']}\n"
    583     )
    585 wheel_promises = []
    586 # Install built-in packages

ValueError: Can't find a pure Python 3 wheel for: 'contourpy>=1', 'tornado>=5.1'
See: https://pyodide.org/en/stable/usage/faq.html#micropip-can-t-find-a-pure-python-wheel

Describe the solution you'd like

A working, unified script pointing to the latest version of Panel and Bokeh.

Describe alternatives you've considered

N/A

Additional context

Try the installation for yourself at https://jupyterlite.readthedocs.io/en/latest/_static/lab/index.html

[michaelweinold]

As per the discussion at the Holoviz Discourse, the following wheels work just fine:

https://cdn.holoviz.org/panel/1.2.0/dist/wheels/bokeh-3.2.0-py3-none-any.whl
https://cdn.holoviz.org/panel/1.2.0/dist/wheels/panel-1.2.0-py3-none-any.whl