V8 Build workflow (rogchap/v8go)

The V8 Build workflow from rogchap/v8go, explained and optimized by Latchkey.

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Source: rogchap/v8go.github/workflows/v8build.ymlLicense BSD-3-ClauseView source

What it does

This is the V8 Build workflow from the rogchap/v8go repository, a real project running GitHub Actions. It is shown here with attribution under its BSD-3-Clause license.

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

The workflow

workflow (.yml)

name: V8 Build

on: workflow_dispatch

jobs:
    build:
        name: Build V8 for ${{ matrix.platform }} ${{ matrix.arch }}
        strategy:
            fail-fast: false
            matrix:
                # We use macos-11 over macos-latest because macos-latest defaults to Catalina(10.15) and not Big Sur(11.0)
                # We can switch to macos-latest whenever Big Sur becomes the default
                # See https://github.com/actions/virtual-environments#available-environments
                #
                # We need xcode 12.4 or newer to cross compile between arm64/amd64
                # https://github.com/actions/virtual-environments/blob/main/images/macos/macos-11-Readme.md#xcode
                platform: [ubuntu-22.04, macos-11]
                arch: [x86_64, arm64]
        runs-on: ${{ matrix.platform }}
        steps:
            - name: Checkout
              uses: actions/checkout@v2
              with:
                  submodules: true
                  fetch-depth: 1
            - name: Update depot_tools fetch config
              run: cd deps/depot_tools && git config --unset-all remote.origin.fetch; git config --add remote.origin.fetch +refs/heads/*:refs/remotes/origin/*
              shell: bash
            - name: Install g++-aarch64-linux-gnu
              if: matrix.platform == 'ubuntu-22.04' && matrix.arch == 'arm64'
              run: sudo apt update && sudo apt install g++-aarch64-linux-gnu -y
            - name: Build V8 linux
              if: matrix.platform == 'ubuntu-22.04'
              run: cd deps && ./build.py --no-clang --arch ${{ matrix.arch }}
            - name: Build V8 macOS
              if: matrix.platform == 'macos-11'
              run: cd deps && ./build.py --arch ${{ matrix.arch }}
            - name: Create PR
              uses: peter-evans/create-pull-request@v3
              with:
                commit-message: Update V8 static library for ${{ matrix.platform }} ${{ matrix.arch }}
                branch-suffix: random
                delete-branch: true
                title: V8 static library for ${{ matrix.platform }} ${{ matrix.arch }}
                body: Auto-generated pull request to build V8 for ${{ matrix.platform }} ${{ matrix.arch }}

The same workflow, on Latchkey

Removes redundant runs and caps runaway jobs. Added and changed lines are highlighted.

name: V8 Build
 
on: workflow_dispatch
 
jobs:
    build:
        timeout-minutes: 30
        name: Build V8 for ${{ matrix.platform }} ${{ matrix.arch }}
        strategy:
            fail-fast: false
            matrix:
                # We use macos-11 over macos-latest because macos-latest defaults to Catalina(10.15) and not Big Sur(11.0)
                # We can switch to macos-latest whenever Big Sur becomes the default
                # See https://github.com/actions/virtual-environments#available-environments
                #
                # We need xcode 12.4 or newer to cross compile between arm64/amd64
                # https://github.com/actions/virtual-environments/blob/main/images/macos/macos-11-Readme.md#xcode
                platform: [ubuntu-22.04, macos-11]
                arch: [x86_64, arm64]
        runs-on: ${{ matrix.platform }}
        steps:
            - name: Checkout
              uses: actions/checkout@v2
              with:
                  submodules: true
                  fetch-depth: 1
            - name: Update depot_tools fetch config
              run: cd deps/depot_tools && git config --unset-all remote.origin.fetch; git config --add remote.origin.fetch +refs/heads/*:refs/remotes/origin/*
              shell: bash
            - name: Install g++-aarch64-linux-gnu
              if: matrix.platform == 'ubuntu-22.04' && matrix.arch == 'arm64'
              run: sudo apt update && sudo apt install g++-aarch64-linux-gnu -y
            - name: Build V8 linux
              if: matrix.platform == 'ubuntu-22.04'
              run: cd deps && ./build.py --no-clang --arch ${{ matrix.arch }}
            - name: Build V8 macOS
              if: matrix.platform == 'macos-11'
              run: cd deps && ./build.py --arch ${{ matrix.arch }}
            - name: Create PR
              uses: peter-evans/create-pull-request@v3
              with:
                commit-message: Update V8 static library for ${{ matrix.platform }} ${{ matrix.arch }}
                branch-suffix: random
                delete-branch: true
                title: V8 static library for ${{ matrix.platform }} ${{ matrix.arch }}
                body: Auto-generated pull request to build V8 for ${{ matrix.platform }} ${{ matrix.arch }}

What changed

Add a job timeout so a hung step cannot burn hours of runner time.

1 third-party action is referenced by a movable tag. Pin it to the commit SHA (Latchkey resolves and applies this automatically) so a repointed tag cannot change what runs.

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 1 job (4 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 peter-evans/create-pull-request