Fix conftest dependency breaking nightly wheel build

.github/workflows/pypi-build-artifacts.yml

@@ -71,6 +71,8 @@ jobs:
           # Ignore 32 bit architectures
           CIBW_ARCHS: "auto64"
           CIBW_PROJECT_REQUIRES_PYTHON: ">=3.10,<3.14"
+          # Keep these in sync with Python CI job `cibw-dev-env-smoke-test`
+          # in .github/workflows/python-ci.yml to catch import-time regressions early.
           CIBW_BEFORE_TEST: "uv sync --directory {project} --only-group dev --no-install-project"
           CIBW_TEST_COMMAND: "uv run --directory {project} pytest tests/avro/test_decoder.py"
           # Skip free-threaded (PEP 703) builds until we evaluate decoder_fast support

.github/workflows/python-ci.yml

@@ -200,3 +200,26 @@
         merge-multiple: true
     - name: Generate coverage report (75%) # Coverage threshold should only increase over time — never decrease it!
       run: COVERAGE_FAIL_UNDER=75 make coverage-report
+
+  cibw-dev-env-smoke-test:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v6
+    - uses: actions/setup-python@v6
+      with:
+        python-version: '3.12'
+    - name: Install UV
+      uses: astral-sh/setup-uv@v7
+      with:
+        enable-cache: true
+    # Why this exists:
+    # Catch import-time regressions (e.g., global conftest optional deps)
+    # in the same dev-only environment used by cibuildwheel wheel tests.
+    # Keep this in sync with wheel build test setup in
+    # .github/workflows/pypi-build-artifacts.yml:
+    #   CIBW_BEFORE_TEST: uv sync --directory {project} --only-group dev --no-install-project
+    #   CIBW_TEST_COMMAND: uv run --directory {project} pytest tests/avro/test_decoder.py
+    - name: Mirror wheel CIBW_BEFORE_TEST
+      run: uv sync --directory . --only-group dev --no-install-project
+    - name: Mirror wheel CIBW_TEST_COMMAND (collection only)
+      run: uv run --directory . pytest --collect-only tests/avro/test_decoder.py -q

pyproject.toml

@@ -118,6 +118,7 @@ dev = [
     "docutils!=0.21.post1",
     "mypy-boto3-glue>=1.28.18",
     "mypy-boto3-dynamodb>=1.28.18",
+    "google-cloud-bigquery>=3.33.0,<4",
     "pyarrow-stubs>=20.0.0.20251107", # Remove when pyarrow >= 23.0.0 https://github.com/apache/arrow/pull/47609
     "sqlalchemy>=2.0.18,<3",
 ]