[Python-checkins] bpo-34251: Restore msilib.Win64 to preserve compatibility (GH-8510)

[Miss Islington (bot)]

https://github.com/python/cpython/commit/1e98d87961ec752a1623135f4d7e8a41820ae256
commit: 1e98d87961ec752a1623135f4d7e8a41820ae256
branch: 3.7
author: Miss Islington (bot) <31488909+miss-islington at users.noreply.github.com>
committer: GitHub <noreply at github.com>
date: 2018-07-28T17:14:44-07:00
summary:

bpo-34251: Restore msilib.Win64 to preserve compatibility (GH-8510)

(cherry picked from commit 11eb1a94704142385ffc07852739863ced8587d2)

Co-authored-by: Berker Peksag <berker.peksag at gmail.com>

files:
A Misc/NEWS.d/next/Library/2018-07-28-11-47-10.bpo-34251.q3elQ6.rst
M Lib/msilib/__init__.py

diff --git a/Lib/msilib/__init__.py b/Lib/msilib/__init__.py
index 7ab8bcc52c68..8c5251d9baf8 100644
--- a/Lib/msilib/__init__.py
+++ b/Lib/msilib/__init__.py
@@ -8,6 +8,8 @@
 import sys
 
 AMD64 = "AMD64" in sys.version
+# Keep msilib.Win64 around to preserve backwards compatibility.
+Win64 = AMD64
 
 # Partially taken from Wine
 datasizemask=      0x00ff
diff --git a/Misc/NEWS.d/next/Library/2018-07-28-11-47-10.bpo-34251.q3elQ6.rst b/Misc/NEWS.d/next/Library/2018-07-28-11-47-10.bpo-34251.q3elQ6.rst
new file mode 100644
index 000000000000..098f47e187c7
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2018-07-28-11-47-10.bpo-34251.q3elQ6.rst
@@ -0,0 +1,2 @@
+Restore ``msilib.Win64`` to preserve backwards compatibility since it's
+already used by :mod:`distutils`' ``bdist_msi`` command.