PEP 832: virtual environment discovery

[brettcannon]

@ofek

To be absolutely clear, I now only and ardently support your alternative pull-based idea from the private pre-PEP discussion where the desired environment manager is defined by metadata in pyproject.toml files.

I have written up a proposal at CLI API for discovering environments for a project . I did it separately in case it doesn’t go anywhere and for people here who only care about the outcome of that discussion and not how any conclusion was reached.