[PyQt] pyqtdeploy-sysroot: Unable to find an installation of Python v2.7

Phil Thompson phil at riverbankcomputing.com
Wed Feb 7 22:28:43 GMT 2018

On 7 Feb 2018, at 6:29 pm, Neil Jansen <neil.jansen at rockwellcollins.com> wrote:
> I'm trying to get the demo pyqtdeploy project working, and have hopefully gotten past the openssl building step in my previous email.
> Now I'm getting the following:
> ------------------
> Building Qt5 from source
> pyqtdeploy-sysroot: Unable to find an installation of Python v2.7.
> ------------------
> My build setup, architecture, dependencies are as follows:
> - OS and architecture: Windows 7 Enterprise 64-bit, running on Intel Core i7-4790, 16GB memory
> - Python version: Python 3.5.1
> - Compiler suite: VS2015 x64
> - pyqtdeploy version: 2.1 from pypi
> - qt5 version: qt-everywhere-opensource-src-5.9.3.tar.xz
> It appears that the Qt5Component._build_from_source() in lib\site-packages\pyqtdeploy\sysroot\plugins\qt5.py is hard-coded to use Python 2.7's path when configuring and making, and installing qt5.

On Windows it will use the registry - it doesn't need to be on PATH.

> Why does building Qt5 require Python 2.7 to be on the PATH?  Especially when pyqtdeploy requires Python 3.3 or later?  I didn't think that building Qt5 required Python in any way at all.

It does. I think it's just one module and I can't remember which one offhand.

> Is it possible to build Qt5 without Python 2.7 installed?  If so, how do I go about doing that, especially since the 2.7 version callout above is hard-coded into the library?  Can those lines be removed?


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