Seeking feedback on a plug-in-like system for environment discovery

[brettcannon]

I have an idea at brettcannon/python-launcher#168 for a design to make it easier to discover interpreters and environments. From a pipenv perspective, I see both the consumption and production aspect of the proposal being applicable. For consumption, I could see this helping to discover available Python interpreters for creating virtual environments. For producing, I can see pipenv telling other tools, like VS Code, about the virtual environment it has created for the user.

At this point I'm just looking back for feedback on the proposal; no expectation of implementing anything. If the feedback is positive across various tools, I hope to implement this for the Python Launcher for Unix and VS Code. I would also want to see if it could be turned into a PEP.

Thanks in advance for any feedback you choose to provide!