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In pull request workflow (PriorLabs/tabpfn-client)

The In pull request workflow from PriorLabs/tabpfn-client, explained and optimized by Latchkey.

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Source: PriorLabs/tabpfn-client.github/workflows/pull_request.ymlLicense Apache-2.0View source

What it does

This is the In pull request workflow from the PriorLabs/tabpfn-client repository, a real project running GitHub Actions. It is shown here with attribution under its Apache-2.0 license.

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

The workflow

workflow (.yml)
name: In pull request

on:
  pull_request:

concurrency:
  group: pr-${{ github.ref }}
  cancel-in-progress: true

jobs:
  test_compatibility:
    name: Test Package Compatibility
    strategy:
      fail-fast: false
      matrix:
        include:
          - os: ubuntu-latest
            python-version: "3.10"
            dependency-set: minimum
          - os: macos-15-intel # We need x86 as ARM is python>= 3.11 only.
            # https://github.com/actions/setup-python/issues/855
            python-version: "3.10"
            dependency-set: minimum
          - os: ubuntu-latest
            python-version: "3.13"
            dependency-set: maximum
          - os: macos-latest
            python-version: "3.13"
            dependency-set: maximum
    runs-on: ${{ matrix.os }}

    steps:
      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3

      - name: Set up Python ${{ matrix.python-version }}
        uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
        with:
          python-version: ${{ matrix.python-version }}
          architecture: x64

      - name: Install workflow Python deps
        run: python -m pip install pip-tools tomli

      - name: Generate requirements file for minimum dependencies
        if: matrix.dependency-set == 'minimum'
        run: python scripts/gen_requirements.py min requirements-generated.txt

      - name: Generate requirements file for maximum dependencies
        if: matrix.dependency-set == 'maximum'
        run: python scripts/gen_requirements.py max requirements-generated.txt

      - name: Generate requirements file for dev dependencies
        run: python scripts/gen_requirements.py --dev passthrough dev-requirements-generated.txt

      # Caching based on dependency set and python version. It needs to be done post any operations that modifies the file (like `write`, `touch`, etc.) that can change the hash of the dependency file and lead to a cache miss.
      # REFER: https://github.com/actions/setup-python#caching-packages-dependencies
      - name: Setup pip cache
        id: pip-cache
        uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
        with:
          path: ~/.cache/pip
          key: ${{ runner.os }}-pip-${{ matrix.python-version }}-${{ matrix.dependency-set }}-${{ hashFiles('pyproject.toml', 'requirements-generated.txt', 'dev-requirements-generated.txt')}}
          restore-keys: |
            ${{ runner.os }}-pip-${{ matrix.python-version }}-${{ matrix.dependency-set }}-
            ${{ runner.os }}-pip-${{ matrix.python-version }}-

      - name: Install dependencies
        id: install-deps
        run: |
          echo "::group::Installing dependencies"
          START_TIME=$(date +%s%N)
          python -m pip install --upgrade pip
          pip install -e . --no-deps
          pip install -r requirements-generated.txt
          pip install -r dev-requirements-generated.txt
          END_TIME=$(date +%s%N)
          DURATION=$((($END_TIME - $START_TIME)/1000000))
          echo "duration=$DURATION" >> $GITHUB_OUTPUT
          echo "Dependencies installation took $DURATION ms"
          echo "::endgroup::"

      - name: Initialize submodules
        run: git submodule update --init --recursive

      - name: Check for forbidden licenses
        if: runner.os == 'macOS' && matrix.python-version == '3.10'
        run: |
          licensecheck \
            --requirements-paths pyproject.toml \
            --only-licenses APACHE MIT BSD ISC PYTHON ZLIB UNLICENSE UNKNOWN \
            --ignore-packages certifi "tabpfn*" \
            --show-only-failing \
            -0

      - name: Report cache status
        run: |
          echo "Cache status: ${{ steps.pip-cache.outputs.cache-hit == 'true' && 'HIT' || 'MISS'}}"
          echo "Installation time: ${{ steps.install-deps.outputs.duration }} ms"

      - name: Run Tests
        run: |
          pytest

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: In pull request
 
on:
  pull_request:
 
concurrency:
  group: pr-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  test_compatibility:
    timeout-minutes: 30
    name: Test Package Compatibility
    strategy:
      fail-fast: false
      matrix:
        include:
          - os: ubuntu-latest
            python-version: "3.10"
            dependency-set: minimum
          - os: macos-15-intel # We need x86 as ARM is python>= 3.11 only.
            # https://github.com/actions/setup-python/issues/855
            python-version: "3.10"
            dependency-set: minimum
          - os: ubuntu-latest
            python-version: "3.13"
            dependency-set: maximum
          - os: macos-latest
            python-version: "3.13"
            dependency-set: maximum
    runs-on: ${{ matrix.os }}
 
    steps:
      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
 
      - name: Set up Python ${{ matrix.python-version }}
        uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
        with:
          cache: 'pip'
          python-version: ${{ matrix.python-version }}
          architecture: x64
 
      - name: Install workflow Python deps
        run: python -m pip install pip-tools tomli
 
      - name: Generate requirements file for minimum dependencies
        if: matrix.dependency-set == 'minimum'
        run: python scripts/gen_requirements.py min requirements-generated.txt
 
      - name: Generate requirements file for maximum dependencies
        if: matrix.dependency-set == 'maximum'
        run: python scripts/gen_requirements.py max requirements-generated.txt
 
      - name: Generate requirements file for dev dependencies
        run: python scripts/gen_requirements.py --dev passthrough dev-requirements-generated.txt
 
      # Caching based on dependency set and python version. It needs to be done post any operations that modifies the file (like `write`, `touch`, etc.) that can change the hash of the dependency file and lead to a cache miss.
      # REFER: https://github.com/actions/setup-python#caching-packages-dependencies
      - name: Setup pip cache
        id: pip-cache
        uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
        with:
          path: ~/.cache/pip
          key: ${{ runner.os }}-pip-${{ matrix.python-version }}-${{ matrix.dependency-set }}-${{ hashFiles('pyproject.toml', 'requirements-generated.txt', 'dev-requirements-generated.txt')}}
          restore-keys: |
            ${{ runner.os }}-pip-${{ matrix.python-version }}-${{ matrix.dependency-set }}-
            ${{ runner.os }}-pip-${{ matrix.python-version }}-
 
      - name: Install dependencies
        id: install-deps
        run: |
          echo "::group::Installing dependencies"
          START_TIME=$(date +%s%N)
          python -m pip install --upgrade pip
          pip install -e . --no-deps
          pip install -r requirements-generated.txt
          pip install -r dev-requirements-generated.txt
          END_TIME=$(date +%s%N)
          DURATION=$((($END_TIME - $START_TIME)/1000000))
          echo "duration=$DURATION" >> $GITHUB_OUTPUT
          echo "Dependencies installation took $DURATION ms"
          echo "::endgroup::"
 
      - name: Initialize submodules
        run: git submodule update --init --recursive
 
      - name: Check for forbidden licenses
        if: runner.os == 'macOS' && matrix.python-version == '3.10'
        run: |
          licensecheck \
            --requirements-paths pyproject.toml \
            --only-licenses APACHE MIT BSD ISC PYTHON ZLIB UNLICENSE UNKNOWN \
            --ignore-packages certifi "tabpfn*" \
            --show-only-failing \
            -0
 
      - name: Report cache status
        run: |
          echo "Cache status: ${{ steps.pip-cache.outputs.cache-hit == 'true' && 'HIT' || 'MISS'}}"
          echo "Installation time: ${{ steps.install-deps.outputs.duration }} ms"
 
      - name: Run Tests
        run: |
          pytest
 

What changed

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 per trigger. On Latchkey the same minutes cost up to 58% less than GitHub-hosted, with zero queue time.

Actions used in this workflow