Terminal indicates that (base) is activated for virtual environments in powershell

[karrtikr]

Testing #21298

• conda init powershell script configures conda to automatically activate (base) environment in powershell.
• Powershell itself does not have a shell specific variable we can change to influence the shell prompt.
• For conda environments though, conda init itself embeds a CONDA_PROMPT_MODIFIER variable into the powershell init script, which we can influence to change the prompt 😀
• For virtual environments, no such initialization is done hence this is what currently appears when opening a new terminal 🙁

In that case I'm hoping the learn more docs: https://github.com/microsoft/vscode-python/wiki/Activate-Environments-in-Terminal-Using-Environment-Variables could clarify it.

[karrtikr]

One hack we could've done was that for virtual environments, we use the CONDA_PROMPT_MODIFIER variable itself to set the prompt.

But we had a team discussion about this, and decided that the situation where users are using both conda and virtual environments is probably rare, so let's not preemptively add this hack. We can add it later based on feedback if there's confusion.

Closing as designed.