I'll post this on the various other lists later, but I promised distutils-sig 
first taste, especially since the discussion has been raging for a few days (if 
you're following the setuptools repo, you may already know, but let me take the 
podium for a few minutes anyway :) )

Microsoft has released a compiler package for Python 2.7 to make it easier for 
people to build and distribute their C extension modules on Windows. The 
Microsoft Visual C++ Compiler for Python 2.7 (a.k.a. VC9) is available from: 
http://aka.ms/vcpython27 

This package contains all the tools and headers required to build C extension 
modules for Python 2.7 32-bit and 64-bit (note that some extension modules 
require 3rd party dependencies such as OpenSSL or libxml2 that are not 
included). Other versions of Python built with Visual C++ 2008 are also 
supported, so "Python 2.7" is just advertising - it'll work fine with 2.6 and 
3.2.

You can install the package without requiring administrative privileges and, 
with the latest version of setuptools (from the source repo - there's no 
release yet), use tools such as pip, wheel, or a setup.py file to produce 
binaries on Windows.

The license prevents redistribution of the package itself (obviously you can do 
what you like with the binaries you produce) and IANAL but there should be no 
restriction on using this package on automated build systems under the usual 
one-developer rule (http://stackoverflow.com/a/779631/891 - in effect, the 
compilers are licensed to one user who happens to be using it on a remote 
machine).

My plan is to keep the download link stable so that automated scripts can 
reference and install the package. I have no idea how long that will last... :)

Our intent is to heavily focus on people using this package to produce wheels 
rather than trying to get this onto every user machine. Binary distribution is 
the way Windows has always worked and we want to encourage that, though we do 
also want people to be able to unblock themselves with these compilers.

I should also point out that VC9 is no longer supported by Microsoft. This 
means there won't be any improvements or bug fixes coming, and there's no 
official support offered. Feel free to contact me directly 
<steve.do...@microsoft.com> if there are issues with the package.

Cheers,
Steve

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