Qt6 Wheels Updated for v6.2.0rc

[Phil Thompson]

On 20/09/2021 16:28, Phil Thompson wrote:
> On 20/09/2021 14:06, Florian Bruhin wrote:
>> Hey,
>> 
>> On Sat, Sep 18, 2021 at 04:43:04PM +0100, Phil Thompson wrote:
>>> The PyQt and Qt wheels have now been updated for Qt v6.2.0rc.
>> 
>> Thanks!
>> 
>>> Although the QWebEngineProcess problem seems to be fixed for Linux it 
>>> still
>>> seems to be broken for macOS and Windows.
>> 
>> On macOS for Framework builds, I suppose this (which didn't make it 
>> into
>> the RC) will help:
>> https://codereview.qt-project.org/c/qt/qtwebengine/+/371185
>> 
>> For Windows, I'm not sure whether this is really the same issue!
>> What I seem to get now is:
>> 
>>     $ py -3 -m venv venv
>>     [...]
>> 
>>     $ venv/Scripts/pip install --index-url
>> https://riverbankcomputing.com/pypi/simple/ --no-deps --pre --upgrade
>> PyQt6 PyQt6-webengine PyQt6-Qt6 PyQt6-sip PyQt6-WebEngine-Qt6
>>     [...]
>> 
>>     $ .\venv\Scripts\python.exe -c "from PyQt6 import 
>> QtWebEngineWidgets"
>>     Traceback (most recent call last):
>>       File "<string>", line 1, in <module>
>>     ImportError: DLL load failed while importing QtWebEngineWidgets:
>> The specified module could not be found.
>> 
>> Which looks like a different issue, way before QWebEngineProcess comes
>> into play.
>> 
>> I've tried to debug it a bit with 
>> https://github.com/lucasg/Dependencies
>> but I'm stuck, since I don't really know how this kind of stuff works 
>> on
>> Windows. It shows missing Qt 6 libraries for QtWebEngineWidgets.pyd, 
>> but
>> it shows the same for e.g. QtWidgets.pyd too, while that works fine.
>> 
>> Looking at the underlying Qt .dll files, Qt6WebEngineWidgets seems 
>> fine,
>> while in Qt6WebEngineCore I see some missing dependencies:
>> 
>> - C:\WINDOWS\system32\OLEAUT32.dll
>> - C:\WINDOWS\system32\SHLWAPI.dll
>> - C:\WINDOWS\system32\WINSPOOL.DRV
>> - C:\WINDOWS\system32\WS2_32.dll
>> - MFPlat.DLL
>> - MF.dll
>> - MFReadWrite.dll
>> 
>> However, the same is true for a working Qt5WebEngineCore, so I doubt
>> this is the culprit. The MF* ones, from what I can tell, are because I
>> installed Windows N without media player and such (which probably was 
>> a
>> bad idea, but alas). But again, I see those with Qt 5 too.
> 
> Works fine for me (Python v3.9.0).

I've now fixed the problem I was having with your test script under 
Windows. I've uploaded a new PyQt6-WebEngine-Qt6 Windows wheel.

Phil