[Bug]: Installation problem: Pillow version not compatible with Python version

[3rdPix]

What happened?

When trying to install with pip install "PyQt6-Fluent-Widgets[full]" -i https://pypi.org/simple/. It finds an error at the very end with the Pillow library. In requirements it is expressed that pillow version should be <=9.4.0... why do you keep that? Is there a backwards compatibility problem with newer versions? In the pillow site its expressed that newer python versions only work with Pillow >= 10.1. See:

On this matter, is there a reason you keep pillow in older versions? Could we just use the newer version?

Operation System

Windows 23H2

Python Version

Python 3.12.1

PyQt/PySide Version

PyQt6

PyQt/PySide-Fluent-Widgets Version

1.4.5

How to Reproduce?

During installation

Minimum code

Does not apply.

[3rdPix]

AUTO-UPDATE

I manually installed the latest versions of all the dependencies. Including Pillow and Frameless-Window. There is no need to add version restriction, newer versions will work just fine. This needs to be updated in the setup and requirements files so that it does not cause wheel errors whilst installing fluent widgets.

Here you can see the version list with pip and the fluent window working normally:

The main issue was the Pillow package, but again, there is no need to restrict the requirement to older versions. I suggest to change it, and let it install the latest version.

[zhiyiYo]

See https://github.com/zhiyiYo/PyQt-Fluent-Widgets/issues/376

[zhiyiYo]

Image.fromqpixmap(QPixmap(image)) will raise an exception if the version of pillow >= 9.4.0 and PyQt <= 5.15.10, maybe I should use another way to convert QPixmap to Image

[3rdPix]

You're right! But in this case I was only referring to PyQt6 branch (where obviously PyQt > 5.15.10)... maybe apply the change only on that deployment?

[zhiyiYo]

Sorry, Image.fromqpixmap(QPixmap(image)) will raise an exception if the version of pillow >= 9.4.0 and PyQt > 5.15.2. PyQt6 has not been tested.

[zhiyiYo]

I checked the source code of PIL, and found that high version PIL only supports PyQt6/PySide6.

[zhiyiYo]

But Pillow 9.4.0 supports all Qt bindings. This is weird.

This is the deprecate proposal of Pillow: https://github.com/python-pillow/Pillow/pull/6237

[zhiyiYo]

This is the conversion method, I will add it to my repo:

[3rdPix]

I was just checking the same! Here you can see the exact commit where they stopped supporting PyQt5:

https://github.com/python-pillow/Pillow/commit/59c9d87f8a4d8443a482ca7abb5f1f8d5d970cbd https://github.com/python-pillow/Pillow/commits/main/src/PIL/ImageQt.py

I think the solution should be to make a clear differentiation between the PyQt5 and the PyQt6 branch. Modifying the setup.py so that it takes into account that newer versions of Pillow support PyQt6 only instead of PyQt5.

I think that is a better approach than to hard-code by copying the method from Pillow.

[zhiyiYo]

V1.4.6 has removed restrictions on the PIL version

[3rdPix]

Just saw the commit. Installation for PyQt6 now working perfectly with latest version of Pillow:

Thanks!