Make Pip detect Pip/Python mismatch

[CAM-Gerlach]

@kknechtel

Is there a central piece of documentation somewhere that explains what constraints are relevant and why the situation is as it is? If not, I’d be interested in doing the necessary research etc. for it. But hopefully there would at least be a good place to put it within the Pip documentation… ?

To this point, I recall the pip maintainers specifically proposing having a single standalone version of pip as a zipapp, which the user would invoke to install into their different Python installations and environments. But that idea, as I understand it, got shelved at least for the time being due to a number of issues and concerns raised by the community. It seems it may partially address some of both the constraints and concerns that are relevant here, perhaps?