Build Wheels and Release workflow (PyWavelets/pywt)

The Build Wheels and Release workflow from PyWavelets/pywt, explained and optimized by Latchkey.

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Source: PyWavelets/pywt.github/workflows/wheel_tests_and_release.ymlLicense MITView source

What it does

This is the Build Wheels and Release workflow from the PyWavelets/pywt repository, a real project running GitHub Actions. It is shown here with attribution under its MIT license.

Below, Latchkey shows a faster, safer version produced by its optimization engine.

The workflow

workflow (.yml)

name: Build Wheels and Release
on:
  push:
    tags:
      - "v*"
      - "buildwheels*"
    branches:
      # Runs on every merge to main to upload .dev0 wheels to anaconda.org
      - main
      - v1.**
  # Make it possible to upload wheels manually if needed (for anaconda.org only, not PyPI)
  workflow_dispatch:
    inputs:
      push_wheels:
        description: >
          Push wheels to Anaconda if "true". Default is "false". Warning: this will overwrite existing wheels.
        required: false
        default: "false"
  # Upload wheels to anaconda.org on a schedule
  schedule:
    # Run at 0300 hours on days 3 and 17 of the month
    - cron: "0 3 3,17 * *"
env:
  CIBW_BUILD_VERBOSITY: 2
  CIBW_TEST_REQUIRES: pytest
  CIBW_TEST_COMMAND: pytest --pyargs pywt -m "not slow"
  CIBW_ENVIRONMENT: PIP_PREFER_BINARY=1

jobs:
  build_linux_x86_64_wheels:
    name: Build ${{ matrix.cibw_python }} ${{ matrix.cibw_arch }} ${{ matrix.os }}
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-latest]
        cibw_python: ["cp312", "cp313", "cp313t", "cp314", "cp314t"]
        cibw_arch: ["x86_64"]
    steps:
      - uses: actions/checkout@0c366fd6a839edf440554fa01a7085ccba70ac98 # v4.1.2
        with:
          fetch-depth: 0
      - uses: actions/setup-python@2e3e4b15a884dc73a63f962bff250a855150a234 # v5.5.0
        name: Install Python
        with:
          python-version: "3.12"

      - name: Build the wheel
        uses: pypa/cibuildwheel@8d2b08b68458a16aeb24b64e68a09ab1c8e82084 # v3.4.1
        with:
          output-dir: dist
        env:
          CIBW_BUILD: ${{ matrix.cibw_python }}-*
          CIBW_ARCHS_LINUX: ${{ matrix.cibw_arch }}
          CIBW_ENABLE: cpython-freethreading
      - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
        with:
          name: wheels_linux_${{ matrix.cibw_arch }}_${{ matrix.cibw_python }}
          path: ./dist/*.whl
          if-no-files-found: error

  build_linux_aarch64_wheels:
    name: Build ${{ matrix.cibw_python }} ${{ matrix.cibw_arch }} ${{ matrix.os }}
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-22.04-arm]
        cibw_python: ["cp312", "cp313", "cp313t", "cp314", "cp314t"]
        cibw_arch: ["aarch64"]
    steps:
      - uses: actions/checkout@0c366fd6a839edf440554fa01a7085ccba70ac98 # v4.1.2
        with:
          fetch-depth: 0
      - uses: actions/setup-python@2e3e4b15a884dc73a63f962bff250a855150a234 # v5.5.0
        name: Install Python
        with:
          python-version: "3.12"

      - name: Build the wheel
        uses: pypa/cibuildwheel@8d2b08b68458a16aeb24b64e68a09ab1c8e82084 # v3.4.1
        with:
          output-dir: dist
        env:
          CIBW_BUILD: ${{ matrix.cibw_python }}-*
          CIBW_ARCHS_LINUX: ${{ matrix.cibw_arch }}
          CIBW_ENABLE: cpython-freethreading
      - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
        with:
          name: wheels_linux_${{ matrix.cibw_arch }}_${{ matrix.cibw_python }}
          path: ./dist/*.whl

  build_macos_wheels:
    name: Build ${{ matrix.cibw_python }} ${{ matrix.cibw_arch }} ${{ matrix.os }}
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [macos-15-intel, macos-14]
        cibw_python: ["cp312", "cp313", "cp313t", "cp314", "cp314t"]
        cibw_arch: ["x86_64", "arm64"]
        exclude:
          - os: macos-14
            cibw_arch: "x86_64"
          - os: macos-15-intel
            cibw_arch: "arm64"
    steps:
      - uses: actions/checkout@0c366fd6a839edf440554fa01a7085ccba70ac98 # v4.1.2
        with:
          fetch-depth: 0

      - uses: actions/setup-python@2e3e4b15a884dc73a63f962bff250a855150a234 # v5.5.0
        name: Install Python
        with:
          python-version: "3.12"

      - name: Build wheels for CPython (macOS) (x86_64)
        if: matrix.cibw_arch == 'x86_64'
        uses: pypa/cibuildwheel@8d2b08b68458a16aeb24b64e68a09ab1c8e82084 # v3.4.1
        with:
          output-dir: dist
        env:
          CIBW_BUILD: ${{ matrix.cibw_python }}-*
          CIBW_ARCHS_MACOS: ${{ matrix.cibw_arch }}
          CIBW_ENABLE: cpython-freethreading

      - name: Build wheels for CPython (macOS) (arm64)
        if: matrix.cibw_arch == 'arm64'
        uses: pypa/cibuildwheel@8d2b08b68458a16aeb24b64e68a09ab1c8e82084 # v3.4.1
        with:
          output-dir: dist
        env:
          CIBW_BUILD: ${{ matrix.cibw_python }}-*
          CIBW_ARCHS_MACOS: ${{ matrix.cibw_arch }}
          CIBW_ENABLE: cpython-freethreading

      - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
        with:
          name: wheels_macos_${{ matrix.cibw_arch }}_${{ matrix.cibw_python }}
          path: ./dist/*.whl
          if-no-files-found: error

  build_windows_wheels:
    name: Build ${{ matrix.cibw_python }} ${{ matrix.cibw_arch }} ${{ matrix.os }}
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [windows-latest, windows-11-arm]
        cibw_arch: ["AMD64", "x86", "ARM64"]
        cibw_python: ["cp312", "cp313", "cp313t", "cp314", "cp314t"]
        exclude:
          - os: windows-latest
            cibw_arch: ARM64
          - os: windows-11-arm
            cibw_arch: x86
          - os: windows-11-arm
            cibw_arch: AMD64
    steps:
      - uses: actions/checkout@0c366fd6a839edf440554fa01a7085ccba70ac98 # v4.1.2
        with:
          fetch-depth: 0

      - uses: actions/setup-python@2e3e4b15a884dc73a63f962bff250a855150a234 # v5.5.0
        name: Install Python
        with:
          python-version: "3.12"

      - name: Setup MSVC (32-bit)
        if: matrix.cibw_arch == 'x86'
        uses: bus1/cabuild/action/msdevshell@e22aba57d6e74891d059d66501b6b5aed8123c4d # v1
        with:
          architecture: x86

      - name: Setup MSVC (64-bit)
        if: matrix.cibw_arch == 'AMD64'
        uses: bus1/cabuild/action/msdevshell@e22aba57d6e74891d059d66501b6b5aed8123c4d # v1
        with:
          architecture: x64

      - name: Setup MSVC (ARM64)
        if: matrix.cibw_arch == 'ARM64'
        uses: bus1/cabuild/action/msdevshell@e22aba57d6e74891d059d66501b6b5aed8123c4d # v1
        with:
          architecture: arm64

      - name: Build Windows wheels for CPython
        uses: pypa/cibuildwheel@8d2b08b68458a16aeb24b64e68a09ab1c8e82084 # v3.4.1
        with:
          output-dir: dist
        env:
          CIBW_BUILD: ${{ matrix.cibw_python }}-*
          CIBW_ARCHS_WINDOWS: ${{ matrix.cibw_arch }}
          CIBW_ENABLE: cpython-freethreading

      - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
        with:
          name: wheels_windows_${{ matrix.cibw_arch }}_${{ matrix.cibw_python }}
          path: ./dist/*.whl
          if-no-files-found: error

  deploy_pypi:
    name: Release (PyPI)
    needs:
      [
        build_linux_x86_64_wheels,
        build_linux_aarch64_wheels,
        build_macos_wheels,
        build_windows_wheels,
      ]
    # Run only on tags pushed to the repository
    if: github.repository == 'PyWavelets/pywt' && startsWith(github.ref, 'refs/tags/v')
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@0c366fd6a839edf440554fa01a7085ccba70ac98 # v4.1.2
        with:
          fetch-depth: 0

      - uses: actions/setup-python@2e3e4b15a884dc73a63f962bff250a855150a234 # v5.5.0
        name: Install Python
        with:
          python-version: "3.12"

      - name: Install Twine
        run: |
          python -m pip install --upgrade pip
          pip install twine
          pip install cython numpy build

      - uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
        id: download
        with:
          pattern: "wheels_*"
          path: ./dist
          merge-multiple: true

      - name: Publish the source distribution on PyPI
        run: |
          PYWT_VERSION=$(git describe --tags)
          python -m build --sdist
          ls -la ${{ github.workspace }}/dist
          # We prefer to release wheels before source because otherwise there is a
          # small window during which users who pip install pywt will require compilation.
          twine upload ${{ github.workspace }}/dist/*.whl
          twine upload ${{ github.workspace }}/dist/pywavelets-${PYWT_VERSION:1}.tar.gz
        env:
          TWINE_USERNAME: __token__
          TWINE_PASSWORD: ${{ secrets.TWINE_TOKEN }}

      - name: Github release
        uses: softprops/action-gh-release@b4309332981a82ec1c5618f44dd2e27cc8bfbfda # v3.0.0
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          GITHUB_REPOSITORY: ${{ github.repository }}

  deploy_anaconda:
    name: Release (Anaconda)
    needs:
      [
        build_linux_x86_64_wheels,
        build_linux_aarch64_wheels,
        build_macos_wheels,
        build_windows_wheels,
      ]
    # Run only on pushes to the main branch, on schedule, or when triggered manually
    if: >-
      github.repository == 'PyWavelets/pywt' &&
      (github.event_name == 'push' && github.ref == 'refs/heads/main') ||
      (github.event_name == 'workflow_dispatch' && github.event.inputs.push_wheels == 'true') ||
      (github.event_name == 'schedule')
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@0c366fd6a839edf440554fa01a7085ccba70ac98 # v4.1.2
        with:
          fetch-depth: 0

      - uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
        id: download
        with:
          pattern: "wheels_*"
          path: dist/
          merge-multiple: true

      - name: Push to Anaconda PyPI index
        uses: scientific-python/upload-nightly-action@e76cfec8a4611fd02808a801b0ff5a7d7c1b2d99 # v0.6.4
        with:
          artifacts_path: dist/
          anaconda_nightly_upload_token: ${{ secrets.ANACONDA_ORG_UPLOAD_TOKEN }}

The same workflow, on Latchkey

Estimated ~20% faster on cache hits, plus fewer wasted runs and a safer supply chain. Added and changed lines are highlighted.

name: Build Wheels and Release
on:
  push:
    tags:
      - "v*"
      - "buildwheels*"
    branches:
      # Runs on every merge to main to upload .dev0 wheels to anaconda.org
      - main
      - v1.**
  # Make it possible to upload wheels manually if needed (for anaconda.org only, not PyPI)
  workflow_dispatch:
    inputs:
      push_wheels:
        description: >
          Push wheels to Anaconda if "true". Default is "false". Warning: this will overwrite existing wheels.
        required: false
        default: "false"
  # Upload wheels to anaconda.org on a schedule
  schedule:
    # Run at 0300 hours on days 3 and 17 of the month
    - cron: "0 3 3,17 * *"
env:
  CIBW_BUILD_VERBOSITY: 2
  CIBW_TEST_REQUIRES: pytest
  CIBW_TEST_COMMAND: pytest --pyargs pywt -m "not slow"
  CIBW_ENVIRONMENT: PIP_PREFER_BINARY=1
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  build_linux_x86_64_wheels:
    timeout-minutes: 30
    name: Build ${{ matrix.cibw_python }} ${{ matrix.cibw_arch }} ${{ matrix.os }}
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-latest]
        cibw_python: ["cp312", "cp313", "cp313t", "cp314", "cp314t"]
        cibw_arch: ["x86_64"]
    steps:
      - uses: actions/checkout@0c366fd6a839edf440554fa01a7085ccba70ac98 # v4.1.2
        with:
          fetch-depth: 0
      - uses: actions/setup-python@2e3e4b15a884dc73a63f962bff250a855150a234 # v5.5.0
        name: Install Python
        with:
          cache: 'pip'
          python-version: "3.12"
 
      - name: Build the wheel
        uses: pypa/cibuildwheel@8d2b08b68458a16aeb24b64e68a09ab1c8e82084 # v3.4.1
        with:
          output-dir: dist
        env:
          CIBW_BUILD: ${{ matrix.cibw_python }}-*
          CIBW_ARCHS_LINUX: ${{ matrix.cibw_arch }}
          CIBW_ENABLE: cpython-freethreading
      - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
        with:
          name: wheels_linux_${{ matrix.cibw_arch }}_${{ matrix.cibw_python }}
          path: ./dist/*.whl
          if-no-files-found: error
 
  build_linux_aarch64_wheels:
    timeout-minutes: 30
    name: Build ${{ matrix.cibw_python }} ${{ matrix.cibw_arch }} ${{ matrix.os }}
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-22.04-arm]
        cibw_python: ["cp312", "cp313", "cp313t", "cp314", "cp314t"]
        cibw_arch: ["aarch64"]
    steps:
      - uses: actions/checkout@0c366fd6a839edf440554fa01a7085ccba70ac98 # v4.1.2
        with:
          fetch-depth: 0
      - uses: actions/setup-python@2e3e4b15a884dc73a63f962bff250a855150a234 # v5.5.0
        name: Install Python
        with:
          cache: 'pip'
          python-version: "3.12"
 
      - name: Build the wheel
        uses: pypa/cibuildwheel@8d2b08b68458a16aeb24b64e68a09ab1c8e82084 # v3.4.1
        with:
          output-dir: dist
        env:
          CIBW_BUILD: ${{ matrix.cibw_python }}-*
          CIBW_ARCHS_LINUX: ${{ matrix.cibw_arch }}
          CIBW_ENABLE: cpython-freethreading
      - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
        with:
          name: wheels_linux_${{ matrix.cibw_arch }}_${{ matrix.cibw_python }}
          path: ./dist/*.whl
 
  build_macos_wheels:
    timeout-minutes: 30
    name: Build ${{ matrix.cibw_python }} ${{ matrix.cibw_arch }} ${{ matrix.os }}
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [macos-15-intel, macos-14]
        cibw_python: ["cp312", "cp313", "cp313t", "cp314", "cp314t"]
        cibw_arch: ["x86_64", "arm64"]
        exclude:
          - os: macos-14
            cibw_arch: "x86_64"
          - os: macos-15-intel
            cibw_arch: "arm64"
    steps:
      - uses: actions/checkout@0c366fd6a839edf440554fa01a7085ccba70ac98 # v4.1.2
        with:
          fetch-depth: 0
 
      - uses: actions/setup-python@2e3e4b15a884dc73a63f962bff250a855150a234 # v5.5.0
        name: Install Python
        with:
          cache: 'pip'
          python-version: "3.12"
 
      - name: Build wheels for CPython (macOS) (x86_64)
        if: matrix.cibw_arch == 'x86_64'
        uses: pypa/cibuildwheel@8d2b08b68458a16aeb24b64e68a09ab1c8e82084 # v3.4.1
        with:
          output-dir: dist
        env:
          CIBW_BUILD: ${{ matrix.cibw_python }}-*
          CIBW_ARCHS_MACOS: ${{ matrix.cibw_arch }}
          CIBW_ENABLE: cpython-freethreading
 
      - name: Build wheels for CPython (macOS) (arm64)
        if: matrix.cibw_arch == 'arm64'
        uses: pypa/cibuildwheel@8d2b08b68458a16aeb24b64e68a09ab1c8e82084 # v3.4.1
        with:
          output-dir: dist
        env:
          CIBW_BUILD: ${{ matrix.cibw_python }}-*
          CIBW_ARCHS_MACOS: ${{ matrix.cibw_arch }}
          CIBW_ENABLE: cpython-freethreading
 
      - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
        with:
          name: wheels_macos_${{ matrix.cibw_arch }}_${{ matrix.cibw_python }}
          path: ./dist/*.whl
          if-no-files-found: error
 
  build_windows_wheels:
    timeout-minutes: 30
    name: Build ${{ matrix.cibw_python }} ${{ matrix.cibw_arch }} ${{ matrix.os }}
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [windows-latest, windows-11-arm]
        cibw_arch: ["AMD64", "x86", "ARM64"]
        cibw_python: ["cp312", "cp313", "cp313t", "cp314", "cp314t"]
        exclude:
          - os: windows-latest
            cibw_arch: ARM64
          - os: windows-11-arm
            cibw_arch: x86
          - os: windows-11-arm
            cibw_arch: AMD64
    steps:
      - uses: actions/checkout@0c366fd6a839edf440554fa01a7085ccba70ac98 # v4.1.2
        with:
          fetch-depth: 0
 
      - uses: actions/setup-python@2e3e4b15a884dc73a63f962bff250a855150a234 # v5.5.0
        name: Install Python
        with:
          cache: 'pip'
          python-version: "3.12"
 
      - name: Setup MSVC (32-bit)
        if: matrix.cibw_arch == 'x86'
        uses: bus1/cabuild/action/msdevshell@e22aba57d6e74891d059d66501b6b5aed8123c4d # v1
        with:
          architecture: x86
 
      - name: Setup MSVC (64-bit)
        if: matrix.cibw_arch == 'AMD64'
        uses: bus1/cabuild/action/msdevshell@e22aba57d6e74891d059d66501b6b5aed8123c4d # v1
        with:
          architecture: x64
 
      - name: Setup MSVC (ARM64)
        if: matrix.cibw_arch == 'ARM64'
        uses: bus1/cabuild/action/msdevshell@e22aba57d6e74891d059d66501b6b5aed8123c4d # v1
        with:
          architecture: arm64
 
      - name: Build Windows wheels for CPython
        uses: pypa/cibuildwheel@8d2b08b68458a16aeb24b64e68a09ab1c8e82084 # v3.4.1
        with:
          output-dir: dist
        env:
          CIBW_BUILD: ${{ matrix.cibw_python }}-*
          CIBW_ARCHS_WINDOWS: ${{ matrix.cibw_arch }}
          CIBW_ENABLE: cpython-freethreading
 
      - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
        with:
          name: wheels_windows_${{ matrix.cibw_arch }}_${{ matrix.cibw_python }}
          path: ./dist/*.whl
          if-no-files-found: error
 
  deploy_pypi:
    timeout-minutes: 30
    name: Release (PyPI)
    needs:
      [
        build_linux_x86_64_wheels,
        build_linux_aarch64_wheels,
        build_macos_wheels,
        build_windows_wheels,
      ]
    # Run only on tags pushed to the repository
    if: github.repository == 'PyWavelets/pywt' && startsWith(github.ref, 'refs/tags/v')
    runs-on: latchkey-small
    steps:
      - uses: actions/checkout@0c366fd6a839edf440554fa01a7085ccba70ac98 # v4.1.2
        with:
          fetch-depth: 0
 
      - uses: actions/setup-python@2e3e4b15a884dc73a63f962bff250a855150a234 # v5.5.0
        name: Install Python
        with:
          cache: 'pip'
          python-version: "3.12"
 
      - name: Install Twine
        run: |
          python -m pip install --upgrade pip
          pip install twine
          pip install cython numpy build
 
      - uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
        id: download
        with:
          pattern: "wheels_*"
          path: ./dist
          merge-multiple: true
 
      - name: Publish the source distribution on PyPI
        run: |
          PYWT_VERSION=$(git describe --tags)
          python -m build --sdist
          ls -la ${{ github.workspace }}/dist
          # We prefer to release wheels before source because otherwise there is a
          # small window during which users who pip install pywt will require compilation.
          twine upload ${{ github.workspace }}/dist/*.whl
          twine upload ${{ github.workspace }}/dist/pywavelets-${PYWT_VERSION:1}.tar.gz
        env:
          TWINE_USERNAME: __token__
          TWINE_PASSWORD: ${{ secrets.TWINE_TOKEN }}
 
      - name: Github release
        uses: softprops/action-gh-release@b4309332981a82ec1c5618f44dd2e27cc8bfbfda # v3.0.0
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          GITHUB_REPOSITORY: ${{ github.repository }}
 
  deploy_anaconda:
    timeout-minutes: 30
    name: Release (Anaconda)
    needs:
      [
        build_linux_x86_64_wheels,
        build_linux_aarch64_wheels,
        build_macos_wheels,
        build_windows_wheels,
      ]
    # Run only on pushes to the main branch, on schedule, or when triggered manually
    if: >-
      github.repository == 'PyWavelets/pywt' &&
      (github.event_name == 'push' && github.ref == 'refs/heads/main') ||
      (github.event_name == 'workflow_dispatch' && github.event.inputs.push_wheels == 'true') ||
      (github.event_name == 'schedule')
    runs-on: latchkey-small
    steps:
      - uses: actions/checkout@0c366fd6a839edf440554fa01a7085ccba70ac98 # v4.1.2
        with:
          fetch-depth: 0
 
      - uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
        id: download
        with:
          pattern: "wheels_*"
          path: dist/
          merge-multiple: true
 
      - name: Push to Anaconda PyPI index
        uses: scientific-python/upload-nightly-action@e76cfec8a4611fd02808a801b0ff5a7d7c1b2d99 # v0.6.4
        with:
          artifacts_path: dist/
          anaconda_nightly_upload_token: ${{ secrets.ANACONDA_ORG_UPLOAD_TOKEN }}

What changed

Run on Latchkey managed runners with one line (runs-on), which apply the fixes below automatically and self-heal transient failures. This example uses latchkey-small; pick the runner size that fits the job.
Cancel superseded runs when a branch or PR gets a newer push.
Cache dependency installs on the setup step so they are served from cache.
Add a job timeout so a hung step cannot burn hours of runner time.

What Latchkey heals here

This workflow has steps that commonly fail on transient issues (network, registries, flaky browsers). On Latchkey managed runners they are detected, retried, and self-healed instead of failing your build:

Dependency installs

This workflow runs 6 jobs (62 with the matrix expanded) per trigger. On Latchkey the same minutes cost up to 58% less than GitHub-hosted, with zero queue time.

Actions used in this workflow

actions/checkout actions/setup-python actions/upload-artifact actions/download-artifact softprops/action-gh-release