Preventing user adding library from public Pypi

Hi,

When using fabric notebooks, user can install libraries sourced from public repositories such as PyPI. Is there a way to disallow that (for security reason)? And potentially redirect to a corporate artifactory ?

Other azure services such as databricks can be configure at network level to achieve such goals (e.g. block public ip), but i don't find any mention of this use case in fabric documentation ; while this seems an important security requirements for many customers.

Thanks !