New submission from Marius Gedminas:
When you try to build a C extension on Windows without having a C compiler,
distutils tries to raise DistutilsPlatformError("Unable to find
vcvarsall.bat"). However, on Python 3.5, it doesn't do that -- instead it lets
a WinError(2 "no such file or directory") from _find_vcvarsall escape.
This breaks packages such as zope.interface that ship optional C modules for
faster execution, but would like to work on people's computers even when there
is no C compiler. See
https://github.com/zopefoundation/zope.interface/issues/24 for details.
----------
components: Distutils
messages: 252308
nosy: dstufft, eric.araujo, mgedmin
priority: normal
severity: normal
status: open
title: distutils: broken error reporting about vcvarsall.bat
type: behavior
versions: Python 3.5
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue25316>
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