Remove deprecated pytest-runner dependency

The `pytest-runner` project has been deprecated since 2019 and has been
archived on git hub in December 2024.

This removes the dependency on the deprecated package and also removes
deprecated keywords from `setup.py` related to it.

Use the new extra to install test dependencies in CI workflow.

Author: penguinpee

.github/workflows/pythonpackage.yml

@@ -29,7 +29,6 @@ jobs:
         python-version: ${{ matrix.python-version }}
     - name: Run install
       run: |
-        pip install setuptools
         pip install .
     - name: Lint with Pylint
       run: |
@@ -38,7 +37,7 @@ jobs:
         pylint --rcfile=.pylintrc nixio
     - name: Test with pytest
       run: |
-        pip install pytest scipy pillow matplotlib
+        pip install .[test]
         # pytest will skip cross-compatibility tests since NIX isn't installed
         pytest
 

setup.py

@@ -80,9 +80,9 @@ def get_wheel_data():
     packages=packages,
     scripts=[],
     python_requires=">=3.6",
-    tests_require=['pytest', 'scipy', 'pillow', 'matplotlib'],
-    test_suite='pytest',
-    setup_requires=['pytest-runner'],
+    extras_require={
+        "test": ['pytest', 'scipy', 'pillow', 'matplotlib', 'setuptools'],
+    },
     install_requires=['numpy', 'h5py'],
     package_data={'nixio': [license_text, description_text]},
     include_package_data=True,