[actions] try something

.github/workflows/python-app.yml

@@ -22,8 +22,9 @@ jobs:
         python-version: 3.6
     - name: Install dependencies
       run: |
+        sudo apt install -y xvfb x11-utils libxkbcommon-x11-0
         python -m pip install --upgrade pip
-        pip install flake8 pyqt5 pytest-qt nixio matplotlib ipython
+        pip install flake8 pyqt5 pytest coverage pytest-qt nixio matplotlib ipython
         if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
     - name: Lint with flake8
       run: |
@@ -33,4 +34,7 @@ jobs:
         flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
     - name: Test with pytest
       run: |
+        env: QT_DEBUG_PLUGINS: 1
+        ulimit -c unlimited
+        sudo catchsegv xvfb-run --auto-servernum `which coverage` run -m pytest
         pytest nixview