ReText crashes after PyQt5, PyQtWebEngine upgrade about retext HOT 4 CLOSED

Note that WebKit and WebEngine are two different renderers. ReText 7.x prefers WebKit. And if you have WebKit installed from your distro and PyQt is from PyPI, they may be incompatible.

I can suggest these options:

• Remove everything from ~/.local/lib/python3.10/dist-packages and rely on packages provided by distro.

• Or: use a virtualenv (e.g. using virtualenvwrapper Debian package) and install ReText in that environment. This way it should interfere less with distro packages. Also, that will pick ReText 8.x which uses PyQt6 (which will bring newer Chromium code base and thus maybe better Unicode support).

• Or: keep your configuration but try removing distro python3-pyqt5.qtwebkit package. This is the less preferred option, because other packages may still cause conflict.

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Thanks for the quick response ! I already tried removing everything and installing ReText 8 via pip3 as per the instructions in README ( not using a virtualenv ). This was even worse - when I do this, I don't get an exception, just a cryptic message that says something like -

qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

To be honest, chasing down and fixing dependency hell problems with Qt and Python is not what I need to be doing right now, I need to be editing Markdown, so I may come back to this and try some of your suggestions at some less critical time. 7 looked promising until I broke it, but right now I'll revert to ghostwriter which kind-of works even though they broke some important things long ago in 2.0 ( the main reason I started looking for alternatives ).

Thanks,
Mark

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qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.

Qt 6's xcb plugin has some new library dependencies compared to Qt 5. In particular, it needs libxcb-shape0 and libxcb-cursor0. Pip cannot install library packages for you. You can do that yourself using the following commands:

This is why my first suggestion was relying on packages provided by the distro — there would be no such problems there.

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