Author cgohlke
Recipients cgohlke, larry, paul.moore, skrah, steve.dower, tim.golden, zach.ware
Date 2015-09-08.20:53:58
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Message-id <1441745638.79.0.130567934401.issue25027@psf.upfronthosting.co.za>
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I understand that distributing dependent DLLs next to extension modules is considered the best approach <https://mail.python.org/pipermail/distutils-sig/2014-October/024990.html> (which nevertheless fails in common cases), however vcruntime140.dll is a special case since it will be shared by almost all extension modules and can be considered a system library.

My Python 3.4 installation contains 913 .pyd files in 277 directories under Lib\site-packages. With the proposed change there will be ~277 redundant vcruntime140.dll files under Python 3.5. Size is not an issue since vcruntime140.dll is small (~87 KB for 64 bit).

Many extension modules are installed directly into Lib\site-packages (no package directory). Uninstalling any one of those extension modules using pip or "wininstaller" will delete vcruntime140.dll from Lib\site-packages, potentially breaking the other extension modules in Lib\site-packages.

IANAL, but under GPL "you may not distribute these [runtime] libraries in compiled DLL form with the program" <http://www.gnu.org/licenses/gpl-faq.html#WindowsRuntimeAndGPL>.
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Date User Action Args
2015-09-08 20:53:58cgohlkesetrecipients: + cgohlke, paul.moore, larry, tim.golden, skrah, zach.ware, steve.dower
2015-09-08 20:53:58cgohlkesetmessageid: <1441745638.79.0.130567934401.issue25027@psf.upfronthosting.co.za>
2015-09-08 20:53:58cgohlkelinkissue25027 messages
2015-09-08 20:53:58cgohlkecreate