fixed tox.ini parameter passenv (#670)

* fixed tox.ini parameter passenv

* use tox>=4.0

Author: cehbrecht

.github/workflows/main.yml

@@ -34,7 +34,7 @@ jobs:
         flake8 pywps
       if: matrix.python-version == 3.7
     - name: Install tox 📦
-      run: pip install tox
+      run: pip install "tox>=4.0"
     - name: Run tests with tox ⚙️
       run: tox -e ${{ matrix.tox-env }}
     - name: Run coveralls ⚙️

requirements-dev.txt

@@ -8,3 +8,4 @@ Sphinx
 twine
 wheel
 bump2version
+tox>=4.0

tox.ini

@@ -8,7 +8,7 @@ setenv =
     PYTEST_ADDOPTS = "--color=yes"
     PYTHONPATH = {toxinidir}
     COV_CORE_SOURCE =
-passenv = CI GITHUB_* LD_LIBRARY_PATH
+passenv = CI, GITHUB_*, LD_LIBRARY_PATH
 download = True
 install_command =
     python -m pip install --no-user {opts} {packages}