[Python-Dev] C99

[Christian Heimes]

On 2016-06-04 11:59, Guido van Rossum wrote:
> As long as we don't require extension module authors to use them --
> they may have their own compatibility requirements.

On Windows extension modules must be compiled with a specific version of
MSVC any way. For Python 3.6 VS 2015 or newer is a hard requirement.

We kept the old compiler directories around for embedders.