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Build Package From Source workflow (expectedparrot/edsl)

The Build Package From Source workflow from expectedparrot/edsl, explained and optimized by Latchkey.

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Source: expectedparrot/edsl.github/workflows/build_package_source.ymlLicense MITView source

What it does

This is the Build Package From Source workflow from the expectedparrot/edsl 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 Package From Source

# Build package from source (without pip install)

on:
  push:
    branches:
      - main
  pull_request:
    branches:
      - main
  workflow_dispatch:

env:
  POETRY_VERSION: "1.7.1"

jobs:
  build:
    runs-on: ${{ matrix.os }}
    timeout-minutes: 30
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-latest, windows-latest, macos-latest]
        python-version: ["3.10", "3.11", "3.12", "3.13"]
    steps:
      - uses: actions/checkout@v3
        with:
          fetch-depth: 0

      - name: Check commit count
        shell: bash
        id: check_commit_count
        run: |
          commit_count=$(git log --oneline | wc -l)
          echo "Commit count: $commit_count"
          if [ $(($commit_count % 1)) -eq 0 ]; then
            echo "run_build_test=true" >> $GITHUB_ENV
          fi
      
      - if: env.run_build_test == 'true'
        name: Set up python ${{ matrix.python-version }}
        uses: actions/setup-python@v4
        with:
          python-version: ${{ matrix.python-version }}

      - if: env.run_build_test == 'true'
        name: Install Poetry
        uses: snok/install-poetry@v1
        with:
          version: ${{ env.POETRY_VERSION }}

      - if: env.run_build_test == 'true'
        name: Install deps
        shell: bash
        run: poetry install --without dev,test

      - if: env.run_build_test == 'true'
        name: Build
        shell: bash
        run: poetry build

      - if: env.run_build_test == 'true'
        name: Test installing built package
        shell: bash
        run: python -m pip install .
        
      - if: env.run_build_test == 'true'
        name: Test import
        shell: bash
        working-directory: ${{ vars.RUNNER_TEMP }}
        run: python -c "import edsl"

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 Package From Source
 
# Build package from source (without pip install)
 
on:
  push:
    branches:
      - main
  pull_request:
    branches:
      - main
  workflow_dispatch:
 
env:
  POETRY_VERSION: "1.7.1"
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  build:
    runs-on: ${{ matrix.os }}
    timeout-minutes: 30
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-latest, windows-latest, macos-latest]
        python-version: ["3.10", "3.11", "3.12", "3.13"]
    steps:
      - uses: actions/checkout@v3
        with:
          fetch-depth: 0
 
      - name: Check commit count
        shell: bash
        id: check_commit_count
        run: |
          commit_count=$(git log --oneline | wc -l)
          echo "Commit count: $commit_count"
          if [ $(($commit_count % 1)) -eq 0 ]; then
            echo "run_build_test=true" >> $GITHUB_ENV
          fi
      
      - if: env.run_build_test == 'true'
        name: Set up python ${{ matrix.python-version }}
        uses: actions/setup-python@v4
        with:
          cache: 'pip'
          python-version: ${{ matrix.python-version }}
 
      - if: env.run_build_test == 'true'
        name: Install Poetry
        uses: snok/install-poetry@v1
        with:
          version: ${{ env.POETRY_VERSION }}
 
      - if: env.run_build_test == 'true'
        name: Install deps
        shell: bash
        run: poetry install --without dev,test
 
      - if: env.run_build_test == 'true'
        name: Build
        shell: bash
        run: poetry build
 
      - if: env.run_build_test == 'true'
        name: Test installing built package
        shell: bash
        run: python -m pip install .
        
      - if: env.run_build_test == 'true'
        name: Test import
        shell: bash
        working-directory: ${{ vars.RUNNER_TEMP }}
        run: python -c "import edsl"
 

What changed

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:

This workflow runs 1 job (12 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