[PyQt] A little trouble developing a conda recipe for PyQt5

Kovid Goyal kovid at kovidgoyal.net
Thu Aug 14 12:53:29 BST 2014

Instructions for compiling Qt 5 with MSVC 2008 can be found here: https://github.com/kovidgoyal/calibre/blob/master/setup/installer/windows/notes.rst

Look for the Qt section. Some of the build customization options are
calibre specific, but it should serve as a good starting point.


On Thu, Aug 14, 2014 at 07:37:24AM -0400, Darren Dale wrote:
> I have been successful building conda packages for qt5/sip/pyqt5 on 64-bit
> windows, osx, and linux (available at binstar.org/dsdale24, for now). I
> discovered an issue with the pyqt5 package for python-2.7, though, it
> crashed when trying to load a couple of the examples, notably qtdemo.py.
> I'm wondering if this may be related to the fact that I could not build Qt5
> with MSVC2008 (due I think to
> https://bugreports.qt-project.org/browse/QTBUG-35980), and therefore had to
> build Qt5 with MSVC2010, but the sip and pyqt5 python-2.7 packages need to
> be built with MSVC2008. The python-3.4 pyqt5 package, which was built with
> MSVC2010, was able to run qtdemo.py without problems.
> I notice that there is no PyQt5 windows installer for python-2.7 posted on
> the Riverbank website. Could anyone comment? I'm wondering if the issues
> I'm seeing are really due to a compiler mismatch, or if there are some
> other issues such that pyqt5 will not be supported for python-2.7 on
> windows.
> Thanks,
> Darren
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Dr. Kovid Goyal 
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