Dependency Manager workflow (ajndkr/lanarky)

The Dependency Manager workflow from ajndkr/lanarky, explained and optimized by Latchkey.

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Source: ajndkr/lanarky.github/workflows/dependency-manager.ymlLicense MITView source

What it does

This is the Dependency Manager workflow from the ajndkr/lanarky 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: Dependency Manager

on:
  workflow_dispatch: # Allow running on-demand
  schedule:
    # Every first day of the month at 1PM UTC
    - cron: 0 13 1 * *

env:
  PYTHON_VERSION: 3.9

jobs:
  upgrade:
    name: Weekly dependency upgrade
    runs-on: ubuntu-latest
    env:
      BRANCH_NAME: deps/weekly-upgrade
    steps:
      - name: Code checkout
        uses: actions/checkout@v4

      - name: Setup python
        uses: actions/setup-python@v4
        with:
          python-version: ${{ env.PYTHON_VERSION }}

      - name: Upgrade base dependencies
        run: |
          pip install -U poetry
          poetry update

      - name: Upgrade pre-commit hooks
        run: |
          pip install pre-commit
          pre-commit autoupdate

      - name: Detect changes
        id: changes
        run: echo "count=$(git status --porcelain=v1 2>/dev/null | wc -l)" >> $GITHUB_OUTPUT

      - name: Commit & push changes
        if: steps.changes.outputs.count > 0
        run: |
          git config user.name "github-actions"
          git config user.email "github-actions@github.com"
          git add .
          git commit -m "build(deps): upgrade dependencies"
          git push -f origin ${{ github.ref_name }}:$BRANCH_NAME

      - name: Open pull request
        if: steps.changes.outputs.count > 0
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          PR=$(gh pr list --head $BRANCH_NAME --json number -q '.[0].number')
          if [ -z $PR ]; then
            gh pr create \
            --draft \
            --head $BRANCH_NAME \
            --title "build(deps): upgrade dependencies" \
            --body "Full log: https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}" \
            --label "dependencies"
          else
            echo "Pull request already exists, won't create a new one."
          fi

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: Dependency Manager
 
on:
  workflow_dispatch: # Allow running on-demand
  schedule:
    # Every first day of the month at 1PM UTC
    - cron: 0 13 1 * *
 
env:
  PYTHON_VERSION: 3.9
 
jobs:
  upgrade:
    timeout-minutes: 30
    name: Weekly dependency upgrade
    runs-on: latchkey-small
    env:
      BRANCH_NAME: deps/weekly-upgrade
    steps:
      - name: Code checkout
        uses: actions/checkout@v4
 
      - name: Setup python
        uses: actions/setup-python@v4
        with:
          cache: 'pip'
          python-version: ${{ env.PYTHON_VERSION }}
 
      - name: Upgrade base dependencies
        run: |
          pip install -U poetry
          poetry update
 
      - name: Upgrade pre-commit hooks
        run: |
          pip install pre-commit
          pre-commit autoupdate
 
      - name: Detect changes
        id: changes
        run: echo "count=$(git status --porcelain=v1 2>/dev/null | wc -l)" >> $GITHUB_OUTPUT
 
      - name: Commit & push changes
        if: steps.changes.outputs.count > 0
        run: |
          git config user.name "github-actions"
          git config user.email "github-actions@github.com"
          git add .
          git commit -m "build(deps): upgrade dependencies"
          git push -f origin ${{ github.ref_name }}:$BRANCH_NAME
 
      - name: Open pull request
        if: steps.changes.outputs.count > 0
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          PR=$(gh pr list --head $BRANCH_NAME --json number -q '.[0].number')
          if [ -z $PR ]; then
            gh pr create \
            --draft \
            --head $BRANCH_NAME \
            --title "build(deps): upgrade dependencies" \
            --body "Full log: https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}" \
            --label "dependencies"
          else
            echo "Pull request already exists, won't create a new one."
          fi

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.
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 1 job 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