Don't require pywin32 for Windows.

Author: tobiasraabe

.github/workflows/main.yml

@@ -56,9 +56,16 @@ jobs:
           sudo apt-get install graphviz graphviz-dev
 
       - name: Run tests, doctests, and notebook tests
+        if: matrix.os != 'windows-latest' || matrix.python-version != '3.14'
         shell: bash -l {0}
         run: just test-cov
 
+      # pywin32 has no wheels for Python 3.14 yet, so skip notebook tests
+      - name: Run tests without notebook tests (Windows + Python 3.14)
+        if: matrix.os == 'windows-latest' && matrix.python-version == '3.14'
+        shell: bash -l {0}
+        run: uv run --group test pytest --cov=src --cov=tests --cov-report=xml -n auto
+
       - name: Upload test coverage reports to Codecov with GitHub Action
         uses: codecov/codecov-action@v5
 

pyproject.toml

@@ -66,7 +66,8 @@ docs = [
 plugin-list = ["httpx>=0.27.0", "tabulate[widechars]>=0.9.0", "tqdm>=4.66.3"]
 test = [
     "deepdiff>=7.0.0",
-    "nbmake>=1.5.5",
+    # nbmake requires pywin32 on Windows, which has no wheels for Python 3.14 yet
+    "nbmake>=1.5.5; platform_system != 'Windows' or python_version < '3.14'",
     "pygments>=2.18.0",
     "pexpect>=4.9.0",
     "pytest>=8.4.0",

tests/conftest.py

@@ -11,9 +11,13 @@
 
 import pytest
 from click.testing import CliRunner
-from nbmake.pytest_items import NotebookItem
 from packaging import version
 
+try:
+    from nbmake.pytest_items import NotebookItem
+except ImportError:
+    NotebookItem = None
+
 from pytask import console
 from pytask import storage
 
@@ -143,6 +147,8 @@ def run_in_subprocess(cmd: tuple[str, ...], cwd: Path | None = None) -> Result:
 
 def pytest_collection_modifyitems(session, config, items) -> None:  # noqa: ARG001
     """Add markers to Jupyter notebook tests."""
+    if NotebookItem is None:
+        return
     for item in items:
         if isinstance(item, NotebookItem):
             item.add_marker(pytest.mark.xfail(reason="The tests are flaky."))