Better test of built wheel

Author: dandavison

.github/workflows/build-binaries.yml

@@ -54,8 +54,13 @@ jobs:
       # Build the wheel
       - run: uv run cibuildwheel --output-dir dist
 
-      # Run a test
-      - run: uv run pytest -k test_activity_hello
+      # Install the wheel in a new venv and run a test
+      - run: |
+          python -m venv .test-venv
+          ./.test-venv/bin/pip install --no-index --find-links=./dist temporalio
+          ./.test-venv/bin/pip install pytest
+          ./.test-venv/bin/python -m pytest -k tests/test_activity_hello
+          rm -r .test-venv
 
       # Upload dist
       - uses: actions/upload-artifact@v4