Let the tests run in the continuous integration

The workflow installed pytest 6.2.5 and a current pytest-cov, then the
requirements pinned tox 3.14, whose pluggy < 1 requirement downgraded
pluggy to 0.13; pytest-cov then failed to load ("unexpected keyword
argument 'wrapper'") and no test ran. The workflow installs the current
pytest, tox is no longer a requirement of the package (nothing imports
it; tox.ini stays for local use), and the jobs of the test matrix no
longer cancel each other when one fails, so that every platform reports
its own result.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

Author: rimoli

.github/workflows/python_package.yaml

@@ -8,6 +8,7 @@ jobs:
 
     runs-on: ${{ matrix.os }}
     strategy:
+      fail-fast: false
       matrix:
         python-version: [3.9, '3.10', '3.11', '3.12']
         os: ['ubuntu-latest', 'macos-latest', 'windows-latest']
@@ -30,7 +31,7 @@ jobs:
       run: |
         python -m pip install --upgrade pip
         pip install setuptools wheel
-        pip install flake8 pytest==6.2.5 pytest-cov coveralls
+        pip install flake8 pytest pytest-cov coveralls
     - name: Install package requirements
       run: pip install -r requirements.txt
     - name: Install package

CHANGELOG.rst

@@ -134,6 +134,10 @@ Fixed
 
 Changed
 '''''''
+- The continuous integration installs the current pytest and no longer
+  installs tox from the requirements: the pinned tox 3.14 forced an old
+  pluggy that the current pytest-cov cannot load, so no test could run.
+  The jobs of the test matrix no longer cancel each other on a failure.
 - The facets of the triangular and tetrahedral meshes created from a
   polygonal mesh are sorted (nodes in ascending order within a facet,
   facets in lexicographic order), whatever the mesher. Triangle and TetGen

requirements.txt

@@ -9,6 +9,5 @@ pyvoro-mmalahe==1.3.4
 scipy>=1.10.1
 setuptools>=70.0.0 
 xmltodict==0.12.0
-tox==3.14.0
 lsq-ellipse==2.0.1
 zipp>=3.19.1 # not directly required, pinned by Snyk to avoid a vulnerability