[New-bugs-announce] [issue25316] distutils: broken error reporting about vcvarsall.bat

[Marius Gedminas]

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.

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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 <report at bugs.python.org>
<http://bugs.python.org/issue25316>
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