Install of extra packages not working: environment.yml not used?

[taylorgibson]

Description

It doesn't appear that adding libraries to the environment.yml file pre-installs extra packages to the environment as intended.

Reproduce

1. Add a library (e.g. pandas) to the environment.yml file
2. Wait for github actions to complete
3. Attempt to import library (e.g. import pandas as pd)
4. See error, ModuleNotFoundError: No module named 'pandas'

Expected behavior

This should load the library as intended and outlined in README.md and @jtpio's Jupytercon video.

Context

• JupyterLite version: 0.1.0
• Using GitHub actions to build and deploy. Repo and GitHub Page
• Looking at the action logs, it never looks like the environment.yml file is used, only the build-environment.yml is used to create an environment.

[jtpio]

Thanks @taylorgibson for reporting the issue :+1:

Maybe it's because jupyterlite-xeus-python is capped to <0.9.0 and some underlying dependencies (empack) have changed in the meantime:

https://github.com/jupyterlite/xeus-python-demo/blob/13dd65394424fb9cf07a622fde1524d9e6f5a970/build-environment.yml#L10

Would you be able to update to the latest 0.9.2 release of jupyterlite-xeus-python to check if that fixes the issue?

[jtpio]

I updated the version of jupyterlite-xeus-python in https://github.com/jupyterlite/xeus-python-demo/pull/26, if you would like to apply the same change to your deployment.

[taylorgibson]

I can confirm that this now allows packages to be installed. Thanks!

[jtpio]

Great, thanks for checking!

[parthi2929]

For my repo, created from latest, its the below and still no package in environment.yml gets installed.

build-environment.yml

name: build-env
channels:
  - conda-forge
dependencies:
  - python
  - pip
  - jupyter_server
  - jupyterlite-core >=0.2.0,<0.3.0
  - jupyterlite-xeus>=0.1.2,<0.2

environment.yml

name: xeus-python-kernel
channels:
  - https://repo.mamba.pm/emscripten-forge
  - conda-forge
dependencies:
  - xeus-python
  - ipycanvas
  - matplotlib
  - pandas
  - networkx
  - ipywidgets
  - pyvis

I still get none of above including pandas not detected in browser jupyter lite, notebook.