QtWebEngineWidgets on MacOS

[Glenn Ramsey]

Hi All,

Getting QtWebEngineWidgets packaged properly is complicated and people, myself
included, seem to still be having issues with it.

In my case it seems that the issue arises because I'm using versions of Qt5 and
PyQt5 that I built from source and I have got it to work as described here:

https://github.com/pyinstaller/pyinstaller/issues/2276#issuecomment-635781511

While looking into this I notice that many of the Qt libraries seem to be
duplicated.

The Qt dylibs that my app is linked to are in myapp.app/Contents/MacOS. E.g.
myapp.app/Contents/MacOS/QtCore. The PyQt libs in
myapp.app/Contents/MacOS/PyQt5/*.so are also linked with those dylibs e.g.

$otool -L PyQt5/QtCore.so
PyQt5/QtCore.so:
@loader_path/../QtCore (compatibility version 5.12.0, current version 5.12.7)

QtWebEngineProcess.aps is located at

PyQt5/Qt/lib/QtWebEngineCore.framework/Versions/5/Helpers/QtWebEngineProcess.app

but the way it's set up it will only work if it has its own private version of
the Qt libraries:

otool -L
PyQt5/Qt/lib/QtWebEngineCore.framework/Versions/5/Helpers/QtWebEngineProcess.app/Contents/MacOS/QtWebEngineProcess

PyQt5/Qt/lib/QtWebEngineCore.framework/Versions/5/Helpers/QtWebEngineProcess.app/Contents/MacOS/QtWebEngineProcess:
@rpath/QtGui.framework/Versions/5/QtGui (compatibility version 5.12.0, current
version 5.12.7)
@rpath/QtCore.framework/Versions/5/QtCore (compatibility version 5.12.0,
current version 5.12.7)
@rpath/QtWebEngineCore.framework/Versions/5/QtWebEngineCore (compatibility
version 5.12.0, current version 5.12.7)
@rpath/QtPositioning.framework/Versions/5/QtPositioning (compatibility version
5.12.0, current version 5.12.7)
@rpath/QtQuick.framework/Versions/5/QtQuick (compatibility version 5.12.0,
current version 5.12.7)
@rpath/QtWebChannel.framework/Versions/5/QtWebChannel (compatibility version
5.12.0, current version 5.12.7)
@rpath/QtQml.framework/Versions/5/QtQml (compatibility version 5.12.0, current
version 5.12.7)
@rpath/QtNetwork.framework/Versions/5/QtNetwork (compatibility version 5.12.0,
current version 5.12.7)


What is the reason for this?

If I change it to use the main copy of the Qt libraries will that break anything?

Glenn

[Bryan A. Jones]

Glenn,

Unfortunately, I don't own a Mac to develop on, so I can't help much here. I don't know why the webengine dylibs point to another version of Qt, either. Does this still happen when using the PyPI wheels? Or is this something unique to the self-build version you have?

Bryan

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[Carlos Francisco Miranda]

If possible to make a exe with plotly pandas numpy sklearn more big data