On 05/22/2015 05:11 PM, Trent Nelson wrote:
Do we still support WS2K3? (Can I even install VS 2015 on that? I would have thought not.)

According to PCbuild/readme.txt, no.  It says:
This directory is used to build CPython for Microsoft Windows NT version 6.0 or higher (Windows Vista, Windows Server 2008, or later) on 32 and 64 bit platforms.