qss url() not working on Python 3.9

[nutrx]

Hey,
just to make sure it's not me: the following code runs properly with both PySid2 and PySide6 on Python3.8 on my machine (Windows 10), i.e. when checking the checkbox I can see the indicator from the svg

from PySide6.QtCore import QDir
from PySide6.QtWidgets import QApplication, QMainWindow, QCheckBox
import sys
import os


class MainWindow(QMainWindow):
    def __init__(self):
        super().__init__()
        self.setCentralWidget(QCheckBox('test'))


if __name__ == '__main__':
    app = QApplication(sys.argv)

    # the icon used below lies in the same dir as this file
    QDir.addSearchPath('icon', os.path.abspath(os.path.dirname(__file__)))

    app.setStyleSheet("""
QCheckBox::indicator:checked {
    image: url(icon:/checkbox_checked.svg);
}
    """)
    mw = MainWindow()
    mw.show()
    sys.exit(app.exec_())

When I run it on Python3.9, there's no indicator, the whole thing just disappears. This applies to all qss url()s and both PySide2 and PySide6. Is this a bug?
Thanks!

Versions for both Python 3.8 and 3.9:

• PySide2 5.15.2
• PySide6 6.0.1

edit also doesnt work with absolute paths, also not with strings in the url() which all seems to work on Python 3.8

[SGaist]

Hi,

Did you try the same path without the leading slash with Python 3.9 ?

[nutrx]

@SGaist Hi, yes same result

[SGaist]

Ok, can you also give the exact versions of Python ?
And how did you install PySide ? Pip or conda ?

[nutrx]

jep, Python 3.8.7 and 3.9.3 and installation via pip

[Gilgamesh]

Quizás ese widget no acepta ese estilo

[eyllanesc]

@nutrx It works for me, share the log when executing the script using the following command: QT_DEBUG_PLUGINS=1 python /path/of/your_script.py. If you use .png instead of .svg, do you still have that problem?

[nutrx]

@eyllanesc png works in both versions. with svg, using

set QT_DEBUG_PLUGINS=1
python3.9 my_file.py

when checking the box it fails with "Cannot load library [...]\\Roaming\\Python\\Python39\\site-packages\\PySide6\\plugins\\imageformats\\qsvg.dll: Das angegebene Modul wurde nicht gefunden. [cannot find the module]" besides other similar errors (even though it exists). When I run it with Python3.8 it works.

However, I noticed that PySide2/6 (and weirdly I think also the Python 3.9 installation) was located in Roaming for Python 3.9 and that it seems to look in various places for packages and the paths for site-packages in Roaming differ from the paths in AppData/Local/Programs. Therefore, although there was only one global (PATH) Python 3.9 installed, I tried by removing the Roaming stuff and reinstalled Python 3.9 and the packages, and now it seems to work...