Change the way to run tox

Author: marlontrapp

.github/workflows/python-package.yml

@@ -31,7 +31,7 @@ jobs:
         make lint
     - name: Test
       run: |
-        make test-all
+        make tox-with-system-python
     - name: Build
       run: |
         make build

Makefile

@@ -30,6 +30,9 @@ test:
 test-all:
 	$(PYTHON_BIN)tox
 
+tox-with-system-python:
+	$(PYTHON_BIN)tox -e py
+
 build:
 	$(PYTHON_BIN)python setup.py build
 	$(PYTHON_BIN)python setup.py install