Use PEP 735 dependency groups

.github/workflows/ci.yml

@@ -43,7 +43,7 @@ jobs:
         run: |
           # We run tests against "." and not the tests directory as we test the README
           # and documentation.
-          uv run --extra=dev pytest -s -vvv --cov-fail-under 100 --cov=src/ --cov=tests .
+          uv run --group=dev pytest -s -vvv --cov-fail-under 100 --cov=src/ --cov=tests .
         env:
           UV_PYTHON: ${{ matrix.python-version }}
 

.github/workflows/publish-site.yml

@@ -31,7 +31,7 @@ jobs:
         uses: sphinx-notes/pages@v3
         with:
           documentation_path: docs/source
-          pyproject_extras: dev
+          pyproject_group: dev
           python_version: '3.14'
           sphinx_build_options: -W
           publish: ${{ github.ref_name == 'main' }}

.github/workflows/release.yml

@@ -53,15 +53,15 @@ jobs:
       - name: Generate the GitHub release notes
         env:
           RELEASE: ${{ steps.calver.outputs.release }}
-        run: uv run --extra=release towncrier build --draft --version "$RELEASE" >
+        run: uv run --group=release towncrier build --draft --version "$RELEASE" >
           release-notes.md
 
       # Assemble the same fragments into CHANGELOG.rst under a new
       # ``$RELEASE`` section and delete the consumed fragment files.
       - name: Update the changelog
         env:
           RELEASE: ${{ steps.calver.outputs.release }}
-        run: uv run --extra=release towncrier build --yes --version "$RELEASE"
+        run: uv run --group=release towncrier build --yes --version "$RELEASE"
 
       - uses: stefanzweifel/git-auto-commit-action@v7
         id: commit
@@ -95,7 +95,7 @@ jobs:
           git fetch --tags
           git checkout "$NEW_TAG"
           uv build --sdist --wheel --out-dir dist/
-          uv run --extra=release check-wheel-contents dist/*.whl
+          uv run --group=release check-wheel-contents dist/*.whl
 
       # We use PyPI trusted publishing rather than a PyPI API token.
       # See https://github.com/pypa/gh-action-pypi-publish/tree/release/v1/?tab=readme-ov-file#trusted-publishing.

docs/source/contributing.rst

@@ -12,7 +12,7 @@ Install Python dependencies in a virtual environment.
 
 .. code-block:: console
 
-   $ pip install --editable '.[dev]'
+   $ pip install --editable . --group dev
 
 Spell checking requires ``enchant``.
 This can be installed on macOS, for example, with `Homebrew`_:
@@ -64,7 +64,7 @@ Run the following commands to build and view documentation locally:
 
 .. code-block:: console
 
-   $ uv run --extra=dev sphinx-build -M html docs/source docs/build -W
+   $ uv run --group=dev sphinx-build -M html docs/source docs/build -W
    $ python -c 'import os, webbrowser; webbrowser.open("file://" + os.path.abspath("docs/build/html/index.html"))'
 
 Continuous integration