Add live notebook link

[paddymul]

Can you add a live link to binder, google collab, or the microsoft dev system. I'm not sure of the best way to do this, but I'm eager to see how you all plumb it in for my own project :)

[kolibril13]

A binder link looks like this:
https://mybinder.org/v2/gh/kolibril13/ipyreact/binder?labpath=examples%2Ffull_tutorial.ipynb
and only needs a .binder/requirements.txt file like this:
https://github.com/kolibril13/ipyreact/tree/14a78a8be8ad8709f781e34cb4e01e673c3faa35/.binder
However, binder is reducing capacity right now, so it might be worth using JupyterLite instead.
https://blog.jupyter.org/mybinder-org-reducing-capacity-c93ccfc6413f

You can use this JupyterLite, a ipyract demo is here:
https://octoframes.github.io/jupyter-tldraw-pyodide-demo/lab/index.html
https://github.com/Octoframes/jupyter-tldraw-pyodide-demo
and you can set everything up as explained in this docs:
https://jupyterlite.readthedocs.io/en/latest/quickstart/deploy.html

but this always need this extra line %pip install ipyreact.
In a few weeks I might have some time to try the xeus kernel, https://github.com/jupyterlite/xeus-python-demo
which can pre-install packages.

[maartenbreddels]

I'm ok with having %pip install -q ipyreact in the notebooks

[kolibril13]

I'm ok with having %pip install -q ipyreact in the notebooks

I also think it's ok, but for the user experience it would be great if the notebook environment is set up with everything already, and I noted that the %pip install ipyreact line sometimes randomly hangs and needs a kernel restart.

Also, with the pip line, there would be some incoherence with binder, because binder already has everything installed from requirements.txt

[maartenbreddels]

incoherence with binder

it will just skip it, since it is already installed.

[kolibril13]

this can be closed with #25

[kolibril13]

I'm reopening this, because there is now a problem with the pip install line.
I have an ipyreact jupyterlite build that was made with version 0.2.0.
Now that there is 0.3.0 out, %pip install ipyreact will install 0.3.0 and that causes the following error:

This can be simply resolved by re-running the jupyterlite build, but is there a better solution?

[kolibril13]

after re-running the jupyterlitebuild for jupyter-mafs https://kolibril13.github.io/jupyter-mafs/lab/index.html I now get an error after the pip install line saying "ValueError: Can't find a pure Python 3 wheel for 'watchfiles>=0.18.0'.":

[maartenbreddels]

re-running the jupyterlite build

Yes, or pin ipyreact pip install ipyreact==0.2.0

Weird, why would ipyreact work and mafs not? This should mean ipyreact wouldn't work either anymore? What are the differences? Same Python version?

[kolibril13]

Weird, why would ipyreact work and mafs not?

It actually does not work for ipyreact anymore as well 😄

Jupyterlite Ipyreact (https://widgetti.github.io/ipyreact/lab/index.html) seemed to be working still, but then I realized that there was an old JupyterLite version of cached in my Google Chrome browser storage.
I tried the example tutorial walkthrough, and I now always get the error message from the %pip install ipyreact line :

ValueError: Can't find a pure Python 3 wheel for 'watchfiles>=0.18.0'.
See: https://pyodide.org/en/stable/usage/faq.html#micropip-can-t-find-a-pure-python-wheel
You can use `micropip.install(..., keep_going=True)`to get a list of all packages with missing wheels.

Tested this in Google Chrome Private Tab, Safari and Firefox:

[maartenbreddels]

It seems this is due to manzt/anywidget#116 . If we do %pip install -q ipyreact anywidget<0.2.4 it might work

[kolibril13]

Good catch!
Thanks, the workaround is a good temporary fix!
For a long term solution, I've written manzt/anywidget#116 (comment)

[kolibril13]

There was just a new release of anywidget that solves the issue by removing the watchfiles dependency:
https://github.com/manzt/anywidget/releases/tag/anywidget%400.3.0
The JupyterLite examples are now working again, and this issue is resolved.
I totally love these quick development cycles!