chore(lib): warn about non-preferred-qt-version (#373)

Closes #371

manim_slides/present/__init__.py

@@ -11,6 +11,23 @@
 from ..config import Config, PresentationConfig
 from ..logger import logger
 
+PREFERRED_QT_VERSIONS = ("6.5.1", "6.5.2")
+
+
+def warn_if_non_desirable_pyside6_version() -> None:
+    from qtpy import API, QT_VERSION
+
+    if sys.version_info < (3, 12) and (
+        API != "pyside6" or QT_VERSION not in PREFERRED_QT_VERSIONS
+    ):
+        logger.warn(
+            f"You are using {API = }, {QT_VERSION = }, "
+            "but we recommend installing 'PySide6==6.5.2', mainly to avoid "
+            "flashing screens between slides, "
+            "see issue https://github.com/jeertmans/manim-slides/issues/293. "
+            "You can do so with `pip install 'manim-slides[pyside6]'`."
+        )
+
 
 @click.command()
 @folder_path_option
@@ -276,6 +293,8 @@ def present(
     if start_at[1]:
         start_at_slide_number = start_at[1]
 
+    warn_if_non_desirable_pyside6_version()
+
     from ..qt_utils import qapp
 
     app = qapp()

pyproject.toml

@@ -126,6 +126,11 @@ filterwarnings = [
 
 [tool.ruff]
 extend-exclude = ["manim_slides/resources.py"]
+extend-include = ["*.ipynb"]
+line-length = 88
+target-version = "py38"
+
+[tool.ruff.lint]
 extend-ignore = [
   "D100",
   "D101",
@@ -140,8 +145,5 @@ extend-ignore = [
   "D212",
   "E501",
 ]
-extend-include = ["*.ipynb"]
 extend-select = ["B", "C90", "D", "I", "N", "RUF", "UP", "T"]
 isort = {known-first-party = ["manim_slides", "tests"]}
-line-length = 88
-target-version = "py38"