PySpike/.github/workflows/python-package.yml at master · mariomulansky/PySpike · GitHub

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# This workflow will install Python dependencies, run tests and lint with a variety of Python versions
# For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions

name: Python package

on:
  push:
    branches: [ master, develop ]
  pull_request:
    branches: [ master, develop ]

jobs:
  build:
    name: Python ${{ matrix.python-version }} (${{ matrix.backend }})
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
        # PySpike treats Cython as an optional accelerator. Both install paths
        # need to work and produce a passing test suite:
        #
        #   cython     -- `pip install .` uses pip's isolated build env, which
        #                 installs Cython per pyproject.toml's build-system
        #                 requires. setup.py compiles the .pyx sources into
        #                 .so modules and the fast path is used at runtime.
        #
        #   no-cython  -- `pip install --no-build-isolation .` with Cython
        #                 deliberately absent. setup.py's `try: import Cython`
        #                 raises ImportError, no extensions are built, and
        #                 each pyspike module falls back to python_backend.py
        #                 via its own `try/except ImportError`.
        backend: [cython, no-cython]

    steps:
    - uses: actions/checkout@v4

    - name: Set up Python ${{ matrix.python-version }}
      uses: actions/setup-python@v5
      with:
        python-version: ${{ matrix.python-version }}

    - name: Install system dependencies
      run: |
        sudo apt-get update
        sudo apt-get install -y libblas-dev liblapack-dev gfortran

    - name: Upgrade pip
      run: python -m pip install --upgrade pip

    - name: Install PySpike — with Cython (build isolation)
      if: matrix.backend == 'cython'
      run: pip install .

    - name: Install PySpike — without Cython (pure-Python fallback)
      if: matrix.backend == 'no-cython'
      run: |
        # Provide only the bare build prereqs Cython is not among them, so
        # setup.py's `try: from Cython.Distutils import build_ext` fails and
        # no C extensions are produced. --no-build-isolation makes pip use
        # this env instead of provisioning a fresh one (which would install
        # Cython per pyproject.toml).
        pip install "setuptools>=77" wheel "numpy>=1.25"
        pip install --no-build-isolation .
        # Sanity check: the compiled extension must NOT be importable.
        python -c "
        try:
            from pyspike.cython import cython_distances
        except ImportError:
            print('OK: cython_distances absent, runtime will use python_backend')
        else:
            raise SystemExit('FAIL: cython_distances was built despite no-cython matrix')
        "

    - name: Install test dependencies
      run: pip install pytest scipy

    - name: Test with PyTest
      run: python -m pytest