Docs: how does rsconnect choose a Python version

The documentation for rsconnect-python has information on how Connect selects a Python version, but not on how rsconnect selects a version when deploying.

I have a vague feeling that the version of Python is decided by the environment from which the command is run - i.e., the first version of Python found on the PATH when using rsconnect deploy...

The section titled Creating a Manifest for Future Deployment alludes to this, but it is no where made explicit:

It will contain the package dependencies from the current Python environment, or from an alternative Python executable specified in the --python option.

https://docs.posit.co/rsconnect-python/#creating-a-manifest-for-future-deployment

I think we (Support, end users) would benefit from making this information explicit.

「将来のデプロイ用のマニフェストを作成する」セクションと、--python オプションを含む rsconnect deploy... の背後にある動作を確認してください。デプロイ環境がどのように Python を選択するかを確認し、その選択を明示的に文書化してください。また、それがマニフェストのガイダンスとどのように関係するかを明確にしてください。