Install wheel when installing dependencies

Author: linuxdaemon

.github/workflows/pythonapp.yml

@@ -36,7 +36,9 @@ jobs:
     - name: Install apt deps
       run: sudo apt-get update && sudo apt-get install -qq -y libxml2-dev libxslt1-dev
     - name: Install dependencies
-      run: pip install -Ur requirements-dev.txt
+      run: |
+        pip install -U pip wheel
+        pip install -Ur requirements-dev.txt
     - name: Test with pytest
       run: pytest
       env: