[PyQt] Help with getting sip built on Windows

[Phil Thompson]

On 10 Feb 2019, at 1:53 am, Neil Jansen <njansen1 at gmail.com> wrote:
> 
> So since I got the build environment working, I kept going and managed to get a pyqtdeploy sysroot built for the demo project.  Then tried to build the demo with pyqtdeploy-build.  It's failing, with this message:
> 
> pyqtdeploy-build --target win-64 --sysroot sysroot-win-64 --build-dir build-win-64 --verbose pyqt-demo.pdy
> Cleaning C:\Tools\pyqtdeploy\demo\build-win-64
> [...]
> Freezing C:\Tools\pyqtdeploy\demo\sysroot-win-64\lib\python3.5\_sysconfigdata.py...
> Execution of 'pyqtdeploy-build' failed with error code 1
> 
> I can confirm it doesn't exist in the sysroot-win-64/lib/python3.5 directory).  If I remove sysconfig from the list of dependencies in the PDY editor GUI, and retry, it'll get much farther along in the install.  However the pyqt-demo.py calls it out as a dependency so I'd like to get it fixed so that I can build the demo.
> 
> 
> So, why did my sysroot not generate a _sysconfigdata.py?  I can't find much information on what it does, or which operating systems it's applicable to, or how it's generated.
> 
> Here's some information on my setup:
> 
> OS: Windows 7 Enterprise
> Architecture: 64-bit
> Compiler: MSVC 2017 64-bit
> Python version: 3.5.1
> Sip version: 4.19.13
> pyqtdeploy version: 2.3.1
> Qt version: 5.12.1
> PyQt version: 5.11.3
> Openssl: 1.1.1a
> zlib: 1.2.11

It looks like a bug affecting Windows and Python v3.5 and earlier. Try the attached patch.

Phil

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