wee-slack workflow (wee-slack/wee-slack)
The wee-slack workflow from wee-slack/wee-slack, explained and optimized by Latchkey.
CI health: F - at risk
Point runs-on at Latchkey and get caching, run de-duplication, job timeouts, SHA-pinned actions, self-healing for flaky steps, and up to 58% lower cost, applied automatically.
What it does
This is the wee-slack workflow from the wee-slack/wee-slack 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
name: wee-slack
on: [push, pull_request]
jobs:
test:
if: >
github.event_name == 'push' || (
github.event_name == 'pull_request' &&
github.event.pull_request.head.repo.full_name != github.repository
)
runs-on: ubuntu-latest
strategy:
fail-fast: false
matrix:
python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
steps:
- uses: actions/checkout@v4
- uses: actions/setup-python@v5
with:
python-version: ${{ matrix.python-version }}
- uses: astral-sh/setup-uv@v5
- name: Install system dependencies
run: |
sudo apt-get update
sudo apt-get install libleveldb-dev
- run: uv sync --locked --all-extras
- run: uv run ruff format --check
- run: uv run ruff check
- run: uv run pyright
- run: uv run pytest tests
build:
if: >
github.event_name == 'push' || (
github.event_name == 'pull_request' &&
github.event.pull_request.head.repo.full_name != github.repository
)
needs: test
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- uses: astral-sh/setup-uv@v5
- run: uv sync --locked
- name: Install WeeChat, tmux and python3-websocket
run: |
sudo apt-get update
sudo apt-get install weechat-headless tmux python3-websocket
- run: ./build.sh
- name: Load slack.py in WeeChat
run: |
WEECHAT_DIR=$(mktemp -d)
tmux new-session -d "weechat-headless --dir $WEECHAT_DIR -r '/script load $PWD/build/slack.py; /quit'"
while pidof -q tmux; do :; done
cat $WEECHAT_DIR/logs/core.weechat.weechatlog
grep -q 'python: registered script "slack"' $WEECHAT_DIR/logs/core.weechat.weechatlog
- uses: actions/upload-artifact@v4
with:
name: slack.py
path: build/slack.py
- uses: pyTooling/Actions/releaser@r1
if: github.ref == 'refs/heads/master'
with:
token: ${{ secrets.GITHUB_TOKEN }}
tag: nightly
files: |
build/slack.py
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: wee-slack on: [push, pull_request] concurrency: group: ${{ github.workflow }}-${{ github.ref }} cancel-in-progress: true jobs: test: timeout-minutes: 30 if: > github.event_name == 'push' || ( github.event_name == 'pull_request' && github.event.pull_request.head.repo.full_name != github.repository ) runs-on: latchkey-small strategy: fail-fast: false matrix: python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"] steps: - uses: actions/checkout@v4 - uses: actions/setup-python@v5 with: cache: 'pip' python-version: ${{ matrix.python-version }} - uses: astral-sh/setup-uv@v5 - name: Install system dependencies run: | sudo apt-get update sudo apt-get install libleveldb-dev - run: uv sync --locked --all-extras - run: uv run ruff format --check - run: uv run ruff check - run: uv run pyright - run: uv run pytest tests build: timeout-minutes: 30 if: > github.event_name == 'push' || ( github.event_name == 'pull_request' && github.event.pull_request.head.repo.full_name != github.repository ) needs: test runs-on: latchkey-small steps: - uses: actions/checkout@v4 - uses: astral-sh/setup-uv@v5 - run: uv sync --locked - name: Install WeeChat, tmux and python3-websocket run: | sudo apt-get update sudo apt-get install weechat-headless tmux python3-websocket - run: ./build.sh - name: Load slack.py in WeeChat run: | WEECHAT_DIR=$(mktemp -d) tmux new-session -d "weechat-headless --dir $WEECHAT_DIR -r '/script load $PWD/build/slack.py; /quit'" while pidof -q tmux; do :; done cat $WEECHAT_DIR/logs/core.weechat.weechatlog grep -q 'python: registered script "slack"' $WEECHAT_DIR/logs/core.weechat.weechatlog - uses: actions/upload-artifact@v4 with: name: slack.py path: build/slack.py - uses: pyTooling/Actions/releaser@r1 if: github.ref == 'refs/heads/master' with: token: ${{ secrets.GITHUB_TOKEN }} tag: nightly files: | build/slack.py
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 useslatchkey-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.
2 third-party actions are referenced by a movable tag. Pin them 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 2 jobs (7 with the matrix expanded) per trigger. On Latchkey the same minutes cost up to 58% less than GitHub-hosted, with zero queue time.