chore(deps): bump version from 5.5.1 to 5.5.2

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.12.8 → v0.12.10](https://github.com/astral-sh/ruff-pre-commit/compare/v0.12.8...v0.12.10)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

.github/workflows/tests.yml

@@ -96,7 +96,7 @@ jobs:
       uses: ssciwr/setup-mesa-dist-win@v2
 
     - name: Run pytest
-      run: uv run --python ${{ matrix.pyversion }} --frozen --extra tests pytest
+      run: uv run --python ${{ matrix.pyversion }} --frozen --group tests --no-dev pytest
 
     - name: Upload to codecov.io
       uses: codecov/codecov-action@v5

.pre-commit-config.yaml

@@ -6,14 +6,14 @@ ci:
   autoupdate_commit_msg: 'chore(deps): pre-commit autoupdate'
 repos:
 - repo: https://github.com/pre-commit/pre-commit-hooks
-  rev: v5.0.0
+  rev: v6.0.0
   hooks:
   - id: check-yaml
   - id: check-toml
   - id: end-of-file-fixer
   - id: trailing-whitespace
 - repo: https://github.com/macisamuele/language-formatters-pre-commit-hooks
-  rev: v2.14.0
+  rev: v2.15.0
   hooks:
   - id: pretty-format-yaml
     args: [--autofix]
@@ -21,13 +21,13 @@ repos:
     exclude: poetry.lock
     args: [--autofix, --trailing-commas]
 - repo: https://github.com/astral-sh/ruff-pre-commit
-  rev: v0.11.0
+  rev: v0.12.10
   hooks:
   - id: ruff
     args: [--fix]
   - id: ruff-format
 - repo: https://github.com/pre-commit/mirrors-mypy
-  rev: v1.15.0
+  rev: v1.17.1
   hooks:
   - id: mypy
     additional_dependencies: [types-requests, types-setuptools]

.readthedocs.yaml

@@ -6,13 +6,13 @@ build:
   apt_packages:
   - libpango1.0-dev
   - ffmpeg
+  jobs:
+    post_create_environment:
+    - asdf plugin add uv
+    - asdf install uv latest
+    - asdf global uv latest
+    - UV_PROJECT_ENVIRONMENT=$READTHEDOCS_VIRTUALENV_PATH uv sync --group docs --no-dev --no-cache
 sphinx:
   builder: html
   configuration: docs/source/conf.py
   fail_on_warning: true
-python:
-  install:
-  - method: pip
-    path: .
-    extra_requirements:
-    - docs

CHANGELOG.md

@@ -8,7 +8,59 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 <!-- start changelog -->
 
 (unreleased)=
-## [Unreleased](https://github.com/jeertmans/manim-slides/compare/v5.5.0...HEAD)
+## [Unreleased](https://github.com/jeertmans/manim-slides/compare/v5.5.2...HEAD)
+
+(v5.5.2)=
+## [v5.5.2](https://github.com/jeertmans/manim-slides/compare/v5.5.1...v5.5.2)
+
+(v5.5.2-added)=
+### Added
+
+- `manim-slides render` now exits with the same return code as the one returned by `manim render` or `manimgl`.
+  [@chrjabs](https://github.com/chrjabs) [#545](https://github.com/jeertmans/manim-slides/pull/545)
+
+(v5.5.2-chore)=
+### Chore
+
+- Moved `docs` and `tests` extras, as well as `dev-dependencies`,
+  inside groups in `dependency-groups`. This could break existing code
+  when using one of those extras, but as they were not part of the public API,
+  we do not consider this to be a **breaking change**.
+  [#542](https://github.com/jeertmans/manim-slides/pull/542)
+- Added example in the research section of the gallery.
+  [@mmcilree](https://github.com/mmcilree) [#552](https://github.com/jeertmans/manim-slides/pull/552)
+- Added example in the school work section of the gallery.
+  [@casperalgera](https://github.com/casperalgera) [#556](https://github.com/jeertmans/manim-slides/pull/556)
+- Added example in the school work section of the gallery.
+  [@amstrdm](https://github.com/amstrdm) [#557](https://github.com/jeertmans/manim-slides/pull/557)
+- Fixed some tests that were failing.
+  [#550](https://github.com/jeertmans/manim-slides/pull/550)
+- Pinned `setuptools<81` for `manimgl` extra, as `setuptools>=81`
+  dropped support for its API.
+  [#550](https://github.com/jeertmans/manim-slides/pull/550)
+
+(v5.5.2-fixed)=
+### Fixed
+
+- Fixed potential import issue of ManimGL, importing `manimlib` will parse `sys.argv`
+  to initialize the config, which can lead to surprising behavior when using the library with
+  different command line arguments that are not meant to be used by ManimGL.
+  [#550](https://github.com/jeertmans/manim-slides/pull/550)
+
+(v5.5.1)=
+## [v5.5.1](https://github.com/jeertmans/manim-slides/compare/v5.5.0...v5.5.1)
+
+(v5.5.1-changed)=
+### Changed
+
+- HTML template now always includes the *notes* plugin so that the speaker
+  view is always available. Previously, it was only included if the slides
+  had notes.
+  [#538](https://github.com/jeertmans/manim-slides/pull/538)
+- Pressing <kbd>SPACE</kbd> key now pauses the slides, instead of skipping it.
+  Previously, it was not possible to pause HTML slides, which can be very annoying
+  when trying to explain something.
+  [#539](https://github.com/jeertmans/manim-slides/pull/539)
 
 (v5.5.0)=
 ## [v5.5.0](https://github.com/jeertmans/manim-slides/compare/v5.4.2...v5.5.0)

CITATION.cff

@@ -27,7 +27,7 @@ keywords:
   - PowerPoint
   - Python
 license: MIT
-version: v5.5.0
+version: v5.5.2
 preferred-citation:
   publisher:
     name: The Open Journal

README.md

@@ -154,21 +154,23 @@ Below is a comparison of the most used ones with Manim Slides:
 
 ## Citing
 
-If you use this project, please cite it using the following reference:
+If you use this software, please cite it using as:
 
 ```bibtex
 @article{Jerome_Eertmans_Manim_Slides_A_2023,
-	title        = {{Manim Slides: A Python package for presenting Manim content anywhere}},
+	title   = {{Manim Slides: A Python package for presenting Manim content anywhere}},
-	author       = {{Jérome Eertmans}},
+	author  = {{Jérome Eertmans}},
-	year         = 2023,
+	year    = 2023,
-	month        = aug,
+	month   = aug,
-	journal      = {Journal of Open Source Education},
+	journal = {Journal of Open Source Education},
-	volume       = 6,
+	volume  = 6,
-	doi          = {10.21105/jose.00206}
+	doi     = {10.21105/jose.00206}
 }
 ```
 
-or by linking this GitHub repository at the end of the presentation.
+or by linking this GitHub repository at the end of your presentation.
+
+Other citation formats can be obtained by clicking on the *Cite this repository* button on this page.
 
 ## Contributing
 

docs/source/contributing/workflow.md

@@ -32,7 +32,7 @@ and development dependencies. If not already, please install this tool.
 With uv, installation becomes straightforward:
 
 ```bash
-uv sync --all-extras
+uv sync
 ```
 
 :::{note}

docs/source/features_table.md

@@ -10,20 +10,22 @@ The following summarizes the different presentation features Manim Slides offers
 | :--- | :---: | :---: | :---: | :---: |
 | Basic navigation through slides | Yes | Yes | Yes | Yes (static image) |
 | Replay slide | Yes | No | No | N/A |
-| Pause animation | Yes | No | No | N/A |
+| Pause animation | Yes | Yes | No | N/A |
 | Play slide in reverse | Yes | No | No | N/A |
 | Slide count | Yes | Yes (optional) | Yes (optional) | N/A |
 | Needs Python with Manim Slides installed | Yes | No | No | No
-| Requires internet access | No | Yes | No | No |
+| Requires internet access | No | Depends[^1] | No | No |
 | Auto. play slides | Yes | Yes | Yes | N/A |
 | Loops support | Yes | Yes | Yes | N/A |
 | Fully customizable | No | Yes (`--use-template` option) | No | No |
-| Other dependencies | None | A modern web browser | PowerPoint or LibreOffice Impress[^1] | None |
+| Other dependencies | None | A modern web browser | PowerPoint or LibreOffice Impress[^2] | None |
-| Works cross-platforms | Yes | Yes | Partly[^1][^2] | Yes |
+| Works cross-platforms | Yes | Yes | Partly[^2][^3] | Yes |
 :::
 
-[^1]: If you encounter a problem where slides do not automatically play or loops do not work,
+[^1]: By default, HTML assets are loaded from the internet, but they can be
+  pre-downloaded and embedded in the HTML file at conversion time.
+[^2]: If you encounter a problem where slides do not automatically play or loops do not work,
   please
   [file an issue on GitHub](https://github.com/jeertmans/manim-slides/issues/new/choose).
-[^2]: PowerPoint online does not seem to support automatic playing of videos,
+[^3]: PowerPoint online does not seem to support automatic playing of videos,
   so you need LibreOffice Impress on Linux platforms.

docs/source/gallery.md

@@ -14,7 +14,7 @@ If you too have created content with Manim Slides that is available online
 (e.g., a YouTube video or website),
 don't hesitate to contact us so that we can share your content on this page!
 
-## Scientif Research
+## Scientific Research
 
 Below are people that dissimenate their research results
 using Manim Slides presentations.
@@ -23,7 +23,7 @@ using Manim Slides presentations.
 
 Daniel publishes his presentations on *Cosmology, String Theory and related*
 topics on his
-[personal website](https://panopepino.github.io/web_page/main_page/slides.html). https://panopepino.github.io/web_page/main_page/slides.html
+[personal website](https://panopepino.github.io/web_page/main_page/slides.html).
 
 For example, below are the slides of a seminar he gave titled
 [Our Universe on a (Dark) Bubble](https://panopepino.github.io/web_page/main_page/presentations/2023_11_long/LS.html).
@@ -67,9 +67,66 @@ For example, below are the slides of his
     </iframe>
 </div>
 
+### Matthew McIlree
+
+Matthew is a Computer Science researcher from Scotland and has used Manim Slides
+to present his work on *Proof Logging for Constraint Programming*. He also publishes
+his presentation slides on his [personal website](https://matthewmcilree.com).
+
+Here are the slides from a 25-minute talk he presented at the 39th Annual AAAI Conference on Artificial Intelligence titled
+[Certifying Bounds Propagation for Integer Multiplication Constraints](https://matthewmcilree.com/files/slides/mcilree_aaai2025.html).
+
+<div style="position:relative;padding-bottom:56.25%;">
+    <iframe
+        loading="lazy"
+        style="width:100%;height:100%;position:absolute;left:0px;top:0px;"
+        frameborder="1"
+        width="100%"
+        height="100%"
+        allowfullscreen
+        allow="autoplay"
+        src="https://matthewmcilree.com/files/slides/mcilree_aaai2025.html">
+    </iframe>
+</div>
+
 ## School Work
 
 Below are people that used Manim Slides for school presentations.
 
-*This list is currently empty. Please reach out to us if you have examples
+### Antonio Caserta
-to share!*
+
+Antonio is a 17-year-old high school student from Germany who used Manim Slides to present his final project, *Episteme*, an AI financial terminal that uses crowdsourced data from social networks to gather stock insights.
+
+The slides from his 30-minute presentation to the school board can be found below and on his [Github repository](https://github.com/amstrdm/episteme-manim-slides)
+
+<div style="position:relative;padding-bottom:56.25%;">
+    <iframe
+        loading="lazy"
+        style="width:100%;height:100%;position:absolute;left:0px;top:0px;"
+        frameborder="1"
+        width="100%"
+        height="100%"
+        allowfullscreen
+        allow="autoplay"
+        src="https://amstrdm.github.io/episteme-manim-slides/">
+    </iframe>
+</div>
+
+### Casper Algera
+
+Casper, a mathematics student from the Netherlands, used Manim Slides to present his bachelor's thesis.
+In his presentation, he illustrates a probabilistic coupling argument related to the [contact process](https://en.wikipedia.org/wiki/Contact_process_(mathematics)).
+His slides are available below, and his full presentation can be viewed on [YouTube](https://www.youtube.com/watch?v=ZJhvfCL5MWE).
+
+<div style="position:relative;padding-bottom:56.25%;">
+    <iframe
+        loading="lazy"
+        style="width:100%;height:100%;position:absolute;left:0px;top:0px;"
+        frameborder="1"
+        width="100%"
+        height="100%"
+        allowfullscreen
+        allow="autoplay"
+        src="https://casperalgera.github.io/criticalvalueCP/">
+    </iframe>
+</div>

manim_slides/__version__.py

@@ -1 +1 @@
-__version__ = "5.5.0"
+__version__ = "5.5.2"

manim_slides/checkhealth.py

@@ -20,8 +20,13 @@ def checkhealth() -> None:
         click.secho("\tmanim not found", bold=True)
 
     try:
+        # Manimlib parses sys.argv on import, so we clear it temporarily.
+        old_argv = sys.argv
+        sys.argv = [__file__]
         from manimlib import __version__ as manimlib_version
 
+        sys.argv = old_argv
+
         click.echo(f"\tmanimgl (version: {manimlib_version})")
     except ImportError:
         click.secho("\tmanimgl not found", bold=True)

manim_slides/render.py

@@ -48,6 +48,7 @@ def render(ce: bool, gl: bool, args: tuple[str, ...]) -> None:
     if ce and gl:
         raise click.UsageError("You cannot specify both --CE and --GL renderers.")
     if gl:
-        subprocess.run([sys.executable, "-m", "manimlib", "-w", *args])
+        completed = subprocess.run([sys.executable, "-m", "manimlib", "-w", *args])
     else:
-        subprocess.run([sys.executable, "-m", "manim", "render", *args])
+        completed = subprocess.run([sys.executable, "-m", "manim", "render", *args])
+    sys.exit(completed.returncode)

manim_slides/slide/animation.py

@@ -22,8 +22,17 @@ if MANIM:
     from manim import LEFT, AnimationGroup, FadeIn, FadeOut
     from manim.mobject.mobject import Mobject
 else:
+    import sys
+
+    # Manimlib parses sys.argv on import, so we clear it temporarily.
+    old_argv = sys.argv
+    sys.argv = [__file__]
     from manimlib import LEFT, AnimationGroup, FadeIn, FadeOut
 
+    sys.argv = old_argv
+
+    del sys
+
     Mobject = Any
 
 

manim_slides/slide/manimlib.py

@@ -1,9 +1,15 @@
+import sys
 from pathlib import Path
 from typing import Any, ClassVar, Optional
 
-from manimlib import Scene, ThreeDCamera
+# Manimlib parses sys.argv on import, so we clear it temporarily.
+old_argv = sys.argv
+sys.argv = [__file__]
+from manimlib import Scene, ThreeDCamera  # noqa: E402
 
-from .base import BaseSlide
+sys.argv = old_argv
+
+from .base import BaseSlide  # noqa: E402
 
 
 class Slide(BaseSlide, Scene):  # type: ignore[misc]

manim_slides/templates/revealjs.html

@@ -50,11 +50,11 @@
     </div>
 
     <script src="https://cdnjs.cloudflare.com/ajax/libs/reveal.js/{{ reveal_version }}/reveal.min.js"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/reveal.js/{{ reveal_version }}/plugin/notes/notes.min.js"></script>
 
     <!-- To include plugins, see: https://revealjs.com/plugins/ -->
     {% if has_notes %}
-      <script src="https://cdnjs.cloudflare.com/ajax/libs/reveal.js/{{ reveal_version }}/plugin/markdown/markdown.min.js"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/reveal.js/{{ reveal_version }}/plugin/markdown/markdown.min.js"></script>
-      <script src="https://cdnjs.cloudflare.com/ajax/libs/reveal.js/{{ reveal_version }}/plugin/notes/notes.min.js"></script>
     {% endif %}
 
     <!-- <script src="index.js"></script> -->
@@ -262,6 +262,23 @@
         // Time before the cursor is hidden (in ms)
         hideCursorTime: {{ hide_cursor_time }}
       });
+      // Override SPACE to play / pause the video
+      Reveal.addKeyBinding(
+        {
+          keyCode: 32,
+          key: 'SPACE',
+          description: 'Play / pause video'
+        },
+        () => {
+          var currentVideos = Reveal.getCurrentSlide().slideBackgroundContentElement.getElementsByTagName("video");
+          if (currentVideos.length > 0) {
+            if (currentVideos[0].paused == true) currentVideos[0].play();
+            else currentVideos[0].pause();
+          } else {
+            Reveal.next();
+          }
+        }
+      );
       {% if one_file %}
       // Fix found by @t-fritsch and @Rapsssito on GitHub
       // see: https://github.com/hakimel/reveal.js/discussions/3362#discussioncomment-11733074.

pyproject.toml

@@ -2,6 +2,39 @@
 build-backend = "hatchling.build"
 requires = ["hatchling", "hatch-fancy-pypi-readme"]
 
+[dependency-groups]
+dev = [
+  {include-group = "docs"},
+  {include-group = "tests"},
+  "bump-my-version>=0.20.3",
+  "pre-commit>=3.5.0",
+]
+docs = [
+  "manim-slides[magic,manim,pyqt6,sphinx-directive]",
+  "furo>=2023.5.20",
+  "ipykernel>=6.25.1",
+  "myst-parser>=2.0.0",
+  "nbsphinx>=0.9.2",
+  "pandoc>=2.3",
+  "pygments<2.19",  # See: https://github.com/ManimCommunity/manim/issues/4104
+  "sphinx>=7.0.1",
+  "sphinxcontrib-programoutput>=0.18",
+  "sphinx-design>=0.6.1",
+  "sphinx-click>=4.4.0",
+  "sphinx-copybutton>=0.5.1",
+  "sphinxext-opengraph>=0.7.5",
+]
+tests = [
+  "importlib-metadata>=8.6.1;python_version<'3.10'",
+  "manim-slides[full,manim,manimgl,pyqt6,pyside6,sphinx-directive]",
+  "pytest>=7.4.0",
+  "pytest-cov>=4.1.0",
+  "pytest-env>=0.8.2",
+  "pytest-missing-modules>=0.1.0",
+  "pytest-qt>=4.2.0",
+  "setuptools>=73.0.1",
+]
+
 [project]
 authors = [{name = "Jérome Eertmans", email = "jeertmans@icloud.com"}]
 classifiers = [
@@ -42,41 +75,17 @@ name = "manim-slides"
 requires-python = ">=3.9"
 
 [project.optional-dependencies]
-docs = [
-  "manim-slides[magic,manim,pyqt6,sphinx-directive]",
-  "furo>=2023.5.20",
-  "ipykernel>=6.25.1",
-  "myst-parser>=2.0.0",
-  "nbsphinx>=0.9.2",
-  "pandoc>=2.3",
-  "pygments<2.19",  # See: https://github.com/ManimCommunity/manim/issues/4104
-  "sphinx>=7.0.1",
-  "sphinxcontrib-programoutput>=0.18",
-  "sphinx-design>=0.6.1",
-  "sphinx-click>=4.4.0",
-  "sphinx-copybutton>=0.5.1",
-  "sphinxext-opengraph>=0.7.5",
-]
 full = [
   "manim-slides[magic,manim,sphinx-directive]",
 ]
 magic = ["manim-slides[manim]", "ipython>=8.12.2"]
 manim = ["manim>=0.19"]
-manimgl = ["manimgl>=1.7.2"]
+manimgl = ["manimgl>=1.7.2", "setuptools<81"]
 pyqt6 = ["pyqt6>=6.7.0"]
 pyqt6-full = ["manim-slides[full,pyqt6]"]
 pyside6 = ["pyside6>=6.6.1,!=6.8.1.1"]
 pyside6-full = ["manim-slides[full,pyside6]"]
 sphinx-directive = ["docutils>=0.20.1", "manim-slides[manim]"]
-tests = [
-  "importlib-metadata>=8.6.1;python_version<'3.10'",
-  "manim-slides[full,manimgl,pyqt6,pyside6,sphinx-directive]",
-  "pytest>=7.4.0",
-  "pytest-cov>=4.1.0",
-  "pytest-env>=0.8.2",
-  "pytest-missing-modules>=0.1.0",
-  "pytest-qt>=4.2.0",
-]
 
 [project.scripts]
 manim-slides = "manim_slides.__main__:cli"
@@ -92,7 +101,7 @@ Repository = "https://github.com/jeertmans/manim-slides"
 allow_dirty = false
 commit = true
 commit_args = ""
-current_version = "5.5.0"
+current_version = "5.5.2"
 ignore_missing_version = false
 message = "chore(deps): bump version from {current_version} to {new_version}"
 parse = '(?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+)(-rc(?P<release>\d+))?'
@@ -196,13 +205,13 @@ filterwarnings = [
   'ignore::DeprecationWarning:pkg_resources.*:',
   'ignore:invalid escape sequence.*:DeprecationWarning',
   'ignore:invalid escape sequence.*:SyntaxWarning',
+  'ignore:urllib3 v2 only supports OpenSSL.*:urllib3.exceptions.NotOpenSSLWarning',
 ]
 
 [tool.ruff]
 extend-exclude = ["manim_slides/resources.py"]
 extend-include = ["*.ipynb"]
 line-length = 88
-target-version = "py39"
 
 [tool.ruff.lint]
 extend-ignore = [
@@ -225,10 +234,3 @@ isort = {known-first-party = ["manim_slides", "tests"]}
 [tool.ruff.lint.per-file-ignores]
 "docs/source/reference/magic_example.ipynb" = ["F403", "F405"]
 "tests/test_slide.py" = ["N801"]
-
-[tool.uv]
-dev-dependencies = [
-  "bump-my-version>=0.20.3",
-  "pre-commit>=3.5.0",
-  "setuptools>=73.0.1",
-]

tests/data/slides.py

@@ -42,3 +42,8 @@ class BasicSlide(Slide):
 
 class BasicSlideSkipReversing(BasicSlide):
     skip_reversing = True
+
+
+class FailingSlide(Slide):
+    def construct(self):
+        self.play("this fails to render")

tests/test_checkhealth.py

@@ -20,7 +20,7 @@ PYSIDE6_NOT_INSTALLED = importlib.util.find_spec("PySide6") is None
     "names",
     list(
         chain.from_iterable(
-            combinations(("manim", "manimlib", "PyQt6", "PySide6"), r=r)
+            combinations(("manim", "manimlib", "pyqt6", "pyside6"), r=r)
             for r in range(0, 5)
         )
     ),

tests/test_main.py

@@ -67,7 +67,7 @@ def test_convert(slides_folder: Path, extension: str) -> None:
 
 @pytest.mark.parametrize(("extension",), [("html",)])
 def test_convert_data_uri_deprecated(slides_folder: Path, extension: str) -> None:
-    runner = CliRunner(mix_stderr=False)
+    runner = CliRunner()
 
     with runner.isolated_filesystem():
         with warnings.catch_warnings(record=True) as w:

tests/test_manim.py

@@ -27,7 +27,11 @@ def assert_import(
 
 @skip_if_py39
 def test_force_api() -> None:
+    # Manimlib parses sys.argv on import, so we clear it temporarily.
+    old_argv = sys.argv
+    sys.argv = [__file__]
     pytest.importorskip("manimlib")
+    sys.argv = old_argv
     import manim  # noqa: F401
 
     if "manimlib" in sys.modules:
@@ -62,9 +66,12 @@ def test_invalid_api() -> None:
 @skip_if_py39
 @pytest.mark.filterwarnings("ignore:assert_import")
 def test_manim_and_manimgl_imported() -> None:
+    # Manimlib parses sys.argv on import, so we clear it temporarily.
+    old_argv = sys.argv
+    sys.argv = [__file__]
     pytest.importorskip("manimlib")
+    sys.argv = old_argv
     import manim  # noqa: F401
-    import manimlib  # noqa: F401
 
     assert_import(
         api_name="manim",
@@ -88,8 +95,11 @@ def test_manim_imported() -> None:
 
 @skip_if_py39
 def test_manimgl_imported() -> None:
+    # Manimlib parses sys.argv on import, so we clear it temporarily.
+    old_argv = sys.argv
+    sys.argv = [__file__]
     pytest.importorskip("manimlib")
-    import manimlib  # noqa: F401
+    sys.argv = old_argv
 
     if "manim" in sys.modules:
         del sys.modules["manim"]

tests/test_present.py

@@ -41,7 +41,7 @@ def test_present_unexisting_slide(args: tuple[str, ...]) -> None:
         results = runner.invoke(present, ["UnexistingSlide", *args])
 
         assert results.exit_code != 0
-        assert "UnexistingSlide.json does not exist" in results.stdout
+        assert "UnexistingSlide.json does not exist" in results.output
 
 
 def test_present_full_screen(args: tuple[str, ...]) -> None:

tests/test_slide.py

@@ -113,6 +113,37 @@ def test_render_basic_slide(
         assert local_presentation_config.resolution == presentation_config.resolution
 
 
+@pytest.mark.parametrize(
+    "renderer",
+    [
+        "--CE",
+        pytest.param(
+            "--GL",
+            marks=pytest.mark.skipif(
+                sys.version_info < (3, 10),
+                reason="See https://github.com/3b1b/manim/issues/2263.",
+            ),
+        ),
+        "--CE --renderer=opengl",
+    ],
+    ids=("CE", "GL", "CE(GL)"),
+)
+def test_render_failing_slide(
+    renderer: str,
+    slides_file: Path,
+    manimgl_config: Path,
+) -> None:
+    runner = CliRunner()
+
+    with runner.isolated_filesystem() as tmp_dir:
+        shutil.copy(manimgl_config, tmp_dir)
+        results = runner.invoke(
+            render, [*renderer.split(" "), str(slides_file), "FailingSlide", "-ql"]
+        )
+
+        assert results.exit_code != 0, results
+
+
 def test_clear_cache(
     slides_file: Path,
 ) -> None:
@@ -219,9 +250,13 @@ def init_slide(cls: SlideType) -> Slide:
     if issubclass(cls, CESlide):
         return cls()
     elif issubclass(cls, GLSlide):
+        # Manimlib parses sys.argv on import, so we clear it temporarily.
+        old_argv = sys.argv
+        sys.argv = [__file__]
         from manimlib.config import parse_cli
 
         _args = parse_cli()
+        sys.argv = old_argv
         return cls()
 
     raise ValueError(f"Unsupported class {cls}")