Block usage of pip inside jupyterlab

[viniciusdc]

Reference Issues or PRs

closes #2133

What does this implement/fix?

This update adds a blocking configuration (globally applied) to the pip command, where its usage will only be habilitated if the user uses a virtualenv, which we can assume the user will not attempt as we already provide the conda environments for such needs.

As an environment variable controls this, it's still possible to be overridden by the user if the variable's value is modified.

Put a x in the boxes that apply

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds a feature)
• Breaking change (fix or feature that would cause existing features not to work as expected)
• Documentation Update
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no API changes)
• Build related changes
• Other (please describe):

Testing

• Did you test the pull request locally?
• Did you add new tests?

Any other comments?

Tested within a local deployment:

• from within a notebook:
  
• from terminal:
  

obs.: tested within all envs to make sure it was supplied as a global update

[viniciusdc]

I will figure out why local failed later today

[costrouc]

@viniciusdc have you tested this PR out locally to see if this works?

[costrouc]

Updating branch to rerun ci

[viniciusdc]

@viniciusdc have you tested this PR out locally to see if this works?

Tested locally, screenshots in the description

[costrouc]

LGTM! Thanks @viniciusdc for testing this out. Playwright is failing due to jupyterlab ui changes that do not affect this PR.