CI workflow (xarray-contrib/pint-xarray)

# adapted from xarray's ci
name: CI
 
on:
  push:
    branches: [main]
  pull_request:
    branches: [main]
  workflow_dispatch:
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
permissions: {}
 
jobs:
  detect-skip-ci-trigger:
    timeout-minutes: 30
    name: "Detect CI Trigger: [skip-ci]"
    if: github.event_name == 'push' || github.event_name == 'pull_request'
    runs-on: ubuntu-slim
    outputs:
      triggered: ${{ steps.detect-trigger.outputs.trigger-found }}
    steps:
      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          fetch-depth: 2
          persist-credentials: false
      - uses: xarray-contrib/ci-trigger@10cd2bfec3484946a4058a421ddf9cfad101e715 # v1.2.1
        id: detect-trigger
        with:
          keyword: "[skip-ci]"
 
  cache-pixi-lock:
    timeout-minutes: 30
    name: "Cache pixi lock"
    needs: detect-skip-ci-trigger
    runs-on: ubuntu-slim
    if: |
      always()
      && github.repository == 'xarray-contrib/pint-xarray'
      && (
        github.event_name == 'workflow_dispatch' || github.event_name == 'push'
        || (
          github.event_name == 'pull_request'
          && (
            needs.detect-skip-ci-trigger.outputs.triggered == 'false'
            && !contains(github.event.pull_request.labels.*.name, 'skip-ci')
          )
        )
      )
 
    outputs:
      cache-key: ${{ steps.pixi-lock.outputs.cache-key }}
      pixi-version: ${{ steps.pixi-lock.outputs.pixi-version }}
    steps:
      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          persist-credentials: false
 
      - uses: Parcels-code/pixi-lock/create-and-cache@38495788b79a5ff26009aecc15daa9a8310b8832 # v0.1.0
        id: pixi-lock
 
  ci:
    timeout-minutes: 30
    name: ${{ matrix.os }} ${{ matrix.env }}
    runs-on: ${{ matrix.os }}
    needs: cache-pixi-lock
    defaults:
      run:
        shell: bash -l {0}
 
    strategy:
      fail-fast: false
      matrix:
        env: ["ci-py311", "ci-py313", "ci-py314"]
        os: ["ubuntu-latest", "macos-latest", "windows-latest"]
 
    env:
      FORCE_COLOR: 3
      ENV: ${{ matrix.env }}
      RUNNER_OS: ${{ matrix.os }}
 
    steps:
      - name: checkout the repository
        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          # need to fetch all tags to get a correct version
          fetch-depth: 0 # fetch all branches and tags
          persist-credentials: false
 
      - uses: Parcels-code/pixi-lock/restore@38495788b79a5ff26009aecc15daa9a8310b8832 # v0.1.0
        with:
          cache-key: ${{ needs.cache-pixi-lock.outputs.cache-key }}
 
      - name: setup environment
        uses: prefix-dev/setup-pixi@5185adfbffb4bd703da3010310260805d89ebb11 # v0.9.6
        with:
          pixi-version: "${{ needs.cache-pixi-lock.outputs.pixi-version }}"
          frozen: true
          cache: true
          environments: "${{ matrix.env }}"
 
      - name: investigate env variables
        run: |
          echo PYTHON_VERSION=$(pixi run -e $ENV python -c 'import sys; print(".".join(map(str, sys.version_info[:2])))') >> $GITHUB_ENV
 
      - name: import pint-xarray
        run: |
          pixi run -e $ENV python -c 'import pint_xarray'
 
      - name: run tests
        if: success()
        id: status
        run: |
          pixi run -e $ENV tests --cov-report=xml
 
      - name: Upload code coverage to Codecov
        uses: codecov/codecov-action@fb8b3582c8e4def4969c97caa2f19720cb33a72f # v7.0.0
        with:
          token: "${{ secrets.CODECOV_TOKEN }}" # zizmor: ignore[secrets-outside-env] codecov token
          files: ./coverage.xml
          flags: unittests
          env_vars: RUNNER_OS,PYTHON_VERSION
          name: codecov-umbrella
          fail_ci_if_error: false