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Fix PySide6 stylesheet usage #3371

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Fix PySide6 stylesheet usage #3371

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f089a85
Use get_style_qss and update qdarkstyle deps
C-Achard Jun 15, 2026
ef2174d
Update uv.lock
C-Achard Jun 15, 2026
2cd803e
Fallback to PySide2 qdarkstyle stylesheet
C-Achard Jun 15, 2026
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17 changes: 10 additions & 7 deletions deeplabcut/gui/launch_script.py
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Original file line number Diff line number Diff line change
Expand Up @@ -19,14 +19,16 @@

"""

import logging
import sys

import PySide6.QtWidgets as QtWidgets
import qdarkstyle
from PySide6.QtCore import Qt

from deeplabcut.gui import BASE_DIR
from deeplabcut.gui.gui_assets import icon_from_resource, pixmap_from_resource
from deeplabcut.gui.gui_assets import get_style_qss, icon_from_resource, pixmap_from_resource

logger = logging.getLogger(__name__)


def launch_dlc():
Expand All @@ -37,11 +39,12 @@ def launch_dlc():
splash = QtWidgets.QSplashScreen(pixmap)
splash.show()

stylefile = BASE_DIR / "style.qss"
with stylefile.open() as f:
app.setStyleSheet(f.read())

dark_stylesheet = qdarkstyle.load_stylesheet_pyside2()
app.setStyleSheet(get_style_qss()) # this gets overridden immediately?
try:
dark_stylesheet = qdarkstyle.load_stylesheet_pyside6()
except Exception as e:
logger.warning(f"Could not load qdarkstyle stylesheet for PySide6: {e}. Falling back to PySide2 stylesheet.")
dark_stylesheet = qdarkstyle.load_stylesheet_pyside2()
app.setStyleSheet(dark_stylesheet)

# Set up a logger and add an stdout handler.
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3 changes: 2 additions & 1 deletion pyproject.toml
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Expand Up @@ -71,7 +71,8 @@ gui = [
"pyside6; platform_system!='Linux' or platform_machine!='x86_64'",
# Avoid 6.10.0 only on Linux x86_64 (fails for older glib versions)
"pyside6<6.10; platform_system=='Linux' and platform_machine=='x86_64'",
"qdarkstyle==3.1",
"qdarkstyle==3.1; platform_system=='Linux' and platform_machine=='x86_64'",
"qdarkstyle>=3.1; platform_system!='Linux' or platform_machine!='x86_64'",
]
openvino = [ "openvino-dev==2022.1" ]
docs = [
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