[Distutils] Announcement: Pip 10 is coming, and will move all internal APIs

[Richard Jones]

Hiya Paul,

There's a bunch of tooling out there using pip's internals to extending
pip's functionality. Could you please provide a some reasoning as to why
they're all going to be broken at pip 10, and possibly some guidance on how
to get that functionality back?


Cheers,

     Richard


On 21 October 2017 at 00:22, Paul Moore <p.f.moore at gmail.com> wrote:

> We're in the process of starting to plan for a release of pip (the
> long-awaited pip 10). We're likely still a month or two away from a
> release, but now is the time for people to start ensuring that
> everything works for them. One key change in the new version will be
> that all of the internal APIs of pip will no longer be available, so
> any code that currently calls functions in the "pip" namespace will
> break. Calling pip's internal APIs has never been supported, and
> always carried a risk of such breakage, so projects doing so should,
> in theory, be prepared for such things. However, reality is not always
> that simple, and we are aware that people will need time to deal with
> the implications.
>
> Just in case it's not clear, simply finding where the internal APIs
> have moved to and calling them under the new names is *not* what
> people should do. We can't stop people calling the internal APIs,
> obviously, but the idea of this change is to give people the incentive
> to find a supported approach, not just to annoy people who are doing
> things we don't want them to ;-)
>
> So please - if you're calling pip's internals in your code, take the
> opportunity *now* to check out the in-development version of pip, and
> ensure your project will still work when pip 10 is released.
>
> And many thanks to anyone else who helps by testing out the new
> version, as well :-)
>
> Thanks,
> Paul
>
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