[actions] again

.github/workflows/python-app.yml

@@ -22,7 +22,6 @@ 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 pytest-qt nixio matplotlib ipython
         if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
@@ -34,5 +33,5 @@ jobs:
         flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
     - name: Test with pytest
       run: |
-        ulimit -c unlimited
-        sudo catchsegv xvfb-run --auto-servernum `which pytest` nixview
+        sudo apt-get install libxkbcommon-x11-0 libxcb-icccm4 libxcb-image0 libxcb-keysyms1 libxcb-randr0 libxcb-render-util0 libxcb-xinerama0 libxcb-xfixes0
+        pytest