Enhance Python workflow for PyQt6 support

Author: Kiguli

.github/workflows/python-package.yml

@@ -1,6 +1,3 @@
-# This workflow will install Python dependencies, run tests and lint with a variety of Python versions
-# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-python
-
 name: Python package
 
 on:
@@ -20,21 +17,30 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
+
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v3
       with:
         python-version: ${{ matrix.python-version }}
-    - name: Install dependencies
+
+    - name: Install system dependencies for PyQt6
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y libegl1-mesa libxkbcommon-x11-0
+
+    - name: Install Python dependencies
       run: |
         python -m pip install --upgrade pip
-        python -m pip install flake8 pytest
+        python -m pip install flake8 pytest pytest-qt
         if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
+
     - name: Lint with flake8
       run: |
         # stop the build if there are Python syntax errors or undefined names
         flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics --exclude fossil-main,ex/benchmarks-deterministic/FOSSIL-versions
-        # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
+        # exit-zero treats all errors as warnings
         flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics --exclude fossil-main,ex/benchmarks-deterministic/FOSSIL-versions
+
     - name: Test with pytest
       run: |
         pytest --ignore=fossil-main --ignore=ex/benchmarks-deterministic/FOSSIL-versions