Use xdist to accelerate unit tests

Signed-off-by: Johannes Mueller <[email protected]>

Author: johannes-mueller

Diff for: .github/workflows/pytest.yml

@@ -35,15 +35,15 @@ jobs:
     - name: Set up Python
       run: uv python install
     - name: Install python essentials
-      run: uv pip install -U setuptools setuptools_scm wheel
+      run: uv pip install -U setuptools setuptools_scm wheel pytest-xdist
     - name: Install dependencies complete
       if: matrix.only-minimal != true
       run: uv pip install -e .[all,testing]
     - name: Install dependencies minimal
       if: matrix.only-minimal == true
       run: uv pip install -e .[testing]
     - name: Unit tests
-      run: pytest
+      run: pytest -n auto
     - name: Notebook flow tests
       if: matrix.only-minimal != true
       uses: coactions/setup-xvfb@v1