Issue 25316: distutils: broken error reporting about vcvarsall.bat (original) (raw)

Issue25316

Created on 2015-10-05 07:19 by mgedmin, last changed 2022-04-11 14:58 by admin. This issue is now closed.

Messages (4)
msg252308 - (view)	Author: Marius Gedminas (mgedmin) *	Date: 2015-10-05 07:19
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.
msg252349 - (view)	Author: Steve Dower (steve.dower) *	Date: 2015-10-05 17:29
Do you have a full stack trace for that exception? I don't see anywhere that should be able to raise WinError in _find_vcvarsall.
msg252350 - (view)	Author: Steve Dower (steve.dower) *	Date: 2015-10-05 17:30
Ah, found it in the linked thread. I'll fix for 3.5.1.
msg252351 - (view)	Author: Roundup Robot (python-dev)	Date: 2015-10-05 17:35
New changeset a2016b29762c by Steve Dower in branch '3.5': Issue #25316: distutils raises OSError instead of DistutilsPlatformError when MSVC is not installed. https://hg.python.org/cpython/rev/a2016b29762c New changeset 07161dd8a078 by Steve Dower in branch 'default': Issue #25316: distutils raises OSError instead of DistutilsPlatformError when MSVC is not installed. https://hg.python.org/cpython/rev/07161dd8a078