ci.yml

name: continuous-integration

on:
  push:
    branches:
      - main
      - master
      - releases/*
  pull_request: null

env:
  CACHE_NUMBER: 0  # increase to reset cache manually
  CONDA_ENV: .github/environment.yml

jobs:
  build:
    runs-on: ${{ matrix.os }}
    defaults:
      run:
        shell: bash -l {0}

    strategy:
      fail-fast: false
      matrix:
        os: [macos-latest, ubuntu-latest]
        include:
          - os: macos-latest
            label: osx-64
            prefix: /Users/runner/miniconda3

          - os: ubuntu-latest
            label: linux-64
            prefix: /usr/share/miniconda3

    steps:
      - name: Cancel previous runs
        uses: styfle/cancel-workflow-action@0.11.0
        with:
          access_token: ${{ github.token }}

      - name: Checkout CCL repository
        uses: actions/checkout@v3

      - name: Set up conda
        uses: conda-incubator/setup-miniconda@v2
        with:
          channels: conda-forge, defaults
          channel-priority: strict
          show-channel-urls: true
          miniforge-version: latest
          miniforge-variant: Mambaforge

      - name: "macOS: set env variables"
        if: matrix.label == 'osx-64'
        run: |
          mamba install llvm-openmp
          echo "DYLD_FALLBACK_LIBRARY_PATH=${CONDA_PREFIX}/lib" >> $GITHUB_ENV
          SDKROOT=$(xcrun --sdk macosx --show-sdk-path)
          echo "SDKROOT: ${SDKROOT}"
          echo "SDKROOT=${SDKROOT}" >> $GITHUB_ENV
          echo "CONDA_BUILD_SYSROOT=${SDKROOT}" >> $GITHUB_ENV

          export CFLAGS="-I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include"
          export LDFLAGS="-L/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/lib"

      - name: Set current date as environment variable
        run: echo "TODAY=$(date +'%Y.%m.%d')" >> $GITHUB_ENV

      - name: Get cached environment
        uses: actions/cache@v3
        id: cache
        with:
          path: ${{ matrix.prefix }}
          key:
            conda-py${{ matrix.py }}--${{
            matrix.os }}--${{
            hashFiles(env.CONDA_ENV) }}-${{
            hashFiles('setup.py') }}--${{
            env.TODAY }}-${{
            env.CACHE_NUMBER }}

      - name: Install environment packages
        if: steps.cache.outputs.cache-hit != 'true'
        run: |
          export MAMBA_NO_BANNER=1  # hide mamba banner from output
          mamba env update --file ${{ env.CONDA_ENV }} --prune

      - name: Install classy
        run: |
          pip install 'setuptools' 'wheel' 'numpy>=1.19.0' 'Cython>=0.29.21,<3'  # for classy
          pip install --no-build-isolation classy==2.9.4

      - name: Install CCL
        run: pip install -e .

      - name: Unit tests
        run: |
          OMP_NUM_THREADS=2 pytest -vv pyccl --cov=pyccl --cov-report=lcov:lcov.info

      - name: Benchmarks
        run: |
          OMP_NUM_THREADS=2 pytest -vv benchmarks --cov=pyccl --cov-report=lcov:lcov.info --cov-append

      - name: Code coverage
        if: matrix.label == 'linux-64'
        uses: coverallsapp/github-action@v2
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          path-to-lcov: lcov.info

  lint:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout CCL repository
        uses: actions/checkout@v3

      - name: Lint
        uses: py-actions/flake8@v2
        with:
          args: "--config .flake8"


# Legacy step: uninstall homebrew (CI works without it).
# - name: "macOS: remove homebrew"
#   if: matrix.label == 'osx-64'
#   run: |
#     curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/uninstall.sh -o uninstall_homebrew.sh
#     chmod u+x ./uninstall_homebrew.sh
#     ./uninstall_homebrew.sh -f -q >& /dev/null
#     rm -f uninstall_homebrew.sh