release-python.yml

name: Release Python

on:
  workflow_dispatch:
    inputs:
      # Latest commit to include with the release. If omitted, use the latest commit on the main branch.
      sha:
        description: Commit SHA
        type: string
      # Create the sdist and build the wheels, but do not publish to PyPI / GitHub.
      dry-run:
        description: Dry run
        type: boolean
        default: false

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

env:
  PYTHON_VERSION: '3.8'
  CARGO_INCREMENTAL: 0
  CARGO_NET_RETRY: 10
  RUSTUP_MAX_RETRIES: 10

defaults:
  run:
    shell: bash

jobs:
  create-sdist:
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        package: [polars, polars-lts-cpu, polars-u64-idx]

    steps:
      - uses: actions/checkout@v4
        with:
          ref: ${{ inputs.sha }}

      # Avoid potential out-of-memory errors
      - name: Set swap space for Linux
        uses: pierotofy/set-swap-space@master
        with:
          swap-size-gb: 10

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: ${{ env.PYTHON_VERSION }}

      - name: Install yq
        if: matrix.package != 'polars'
        run: pip install yq
      - name: Update package name
        if: matrix.package != 'polars'
        run: tomlq -i -t ".project.name = \"${{ matrix.package }}\"" py-polars/pyproject.toml
      - name: Add bigidx feature
        if: matrix.package == 'polars-u64-idx'
        run: tomlq -i -t '.dependencies.polars.features += ["bigidx"]' py-polars/Cargo.toml

      - name: Create source distribution
        uses: PyO3/maturin-action@v1
        with:
          command: sdist
          args: >
            --manifest-path py-polars/Cargo.toml
            --out dist

      - name: Test sdist
        run: |
          pip install --force-reinstall --verbose dist/*.tar.gz
          python -c 'import polars'

      - name: Upload sdist
        uses: actions/upload-artifact@v4
        with:
          name: sdist-${{ matrix.package }}
          path: dist/*.tar.gz

  build-wheels:
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        package: [polars, polars-lts-cpu, polars-u64-idx]
        os: [ubuntu-latest, macos-latest, windows-32gb-ram]
        architecture: [x86-64, aarch64]
        exclude:
          - os: windows-32gb-ram
            architecture: aarch64

    env:
      SED_INPLACE: ${{ matrix.os == 'macos-latest' && '-i ''''' || '-i'}}
      CPU_CHECK_MODULE: py-polars/polars/_cpu_check.py

    steps:
      - uses: actions/checkout@v4
        with:
          ref: ${{ inputs.sha }}

      # Avoid potential out-of-memory errors
      - name: Set swap space for Linux
        if: matrix.os == 'ubuntu-latest'
        uses: pierotofy/set-swap-space@master
        with:
          swap-size-gb: 10

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: ${{ env.PYTHON_VERSION }}

      - name: Install yq
        if: matrix.package != 'polars'
        run: pip install yq
      - name: Update package name
        if: matrix.package != 'polars'
        run: tomlq -i -t ".project.name = \"${{ matrix.package }}\"" py-polars/pyproject.toml
      - name: Add bigidx feature
        if: matrix.package == 'polars-u64-idx'
        run: tomlq -i -t '.dependencies.polars.features += ["bigidx"]' py-polars/Cargo.toml

      - name: Determine CPU features for x86-64
        id: features
        if: matrix.architecture == 'x86-64'
        env:
          IS_LTS_CPU: ${{ matrix.package == 'polars-lts-cpu' }}
          IS_MACOS: ${{ matrix.os == 'macos-latest' }}
        run: |
          if [[ "$IS_LTS_CPU" = true ]]; then
            FEATURES=+sse3,+ssse3,+sse4.1,+sse4.2,+popcnt
          elif [[ "$IS_MACOS" = true ]]; then
            FEATURES=+sse3,+ssse3,+sse4.1,+sse4.2,+popcnt,+avx,+fma
          else
            FEATURES=+sse3,+ssse3,+sse4.1,+sse4.2,+popcnt,+avx,+avx2,+fma,+bmi1,+bmi2,+lzcnt
          fi
          echo "features=$FEATURES" >> $GITHUB_OUTPUT

      - name: Set RUSTFLAGS for x86-64
        if: matrix.architecture == 'x86-64'
        env:
          FEATURES: ${{ steps.features.outputs.features }}
          CFG: ${{ matrix.package == 'polars-lts-cpu' && '--cfg use_mimalloc' || '' }}
        run: echo "RUSTFLAGS=-C target-feature=${{ steps.features.outputs.features }} $CFG" >> $GITHUB_ENV

      - name: Set variables in CPU check module
        run: |
          sed $SED_INPLACE 's/^_POLARS_ARCH = \"unknown\"$/_POLARS_ARCH = \"${{ matrix.architecture }}\"/g' $CPU_CHECK_MODULE
          sed $SED_INPLACE 's/^_POLARS_FEATURE_FLAGS = \"\"$/_POLARS_FEATURE_FLAGS = \"${{ steps.features.outputs.features }}\"/g' $CPU_CHECK_MODULE
      - name: Set variables in CPU check module - LTS_CPU
        if: matrix.package == 'polars-lts-cpu'
        run: |
          sed $SED_INPLACE 's/^_LTS_CPU = False$/_LTS_CPU = True/g' $CPU_CHECK_MODULE

      - name: Set Rust target for aarch64
        if: matrix.architecture == 'aarch64'
        id: target
        run: |
          TARGET=${{ matrix.os == 'macos-latest' && 'aarch64-apple-darwin' || 'aarch64-unknown-linux-gnu'}}
          echo "target=$TARGET" >> $GITHUB_OUTPUT

      - name: Set jemalloc for aarch64 Linux
        if: matrix.architecture == 'aarch64' && matrix.os == 'ubuntu-latest'
        run: |
          echo "JEMALLOC_SYS_WITH_LG_PAGE=16" >> $GITHUB_ENV

      - name: Build wheel
        uses: PyO3/maturin-action@v1
        with:
          command: build
          target: ${{ steps.target.outputs.target }}
          args: >
            --release
            --manifest-path py-polars/Cargo.toml
            --out dist
          manylinux: ${{ matrix.architecture == 'aarch64' && '2_24' || 'auto' }}

      - name: Upload wheel
        uses: actions/upload-artifact@v4
        with:
          name: wheel-${{ matrix.package }}-${{ matrix.os }}-${{ matrix.architecture }}
          path: dist/*.whl

  publish-to-pypi:
    needs: [create-sdist, build-wheels]
    environment:
      name: release-python
      url: https://pypi.org/project/polars
    runs-on: ubuntu-latest
    permissions:
      id-token: write

    steps:
      - name: Download sdists and wheels
        uses: actions/download-artifact@v4
        with:
          path: dist
          merge-multiple: true

      - name: Publish to PyPI
        if: inputs.dry-run == false
        uses: pypa/gh-action-pypi-publish@release/v1
        with:
          verbose: true

  publish-to-github:
    needs: publish-to-pypi
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          ref: ${{ inputs.sha }}

      - name: Download sdist
        uses: actions/download-artifact@v4
        with:
          name: sdist-polars
          path: dist

      - name: Get version from Cargo.toml
        id: version
        working-directory: py-polars
        run: |
          VERSION=$(grep -m 1 -oP 'version = "\K[^"]+' Cargo.toml)
          if [[ "$VERSION" == *"-"* ]]; then
            IS_PRERELEASE=true
          else
            IS_PRERELEASE=false
          fi
          echo "version=$VERSION" >> $GITHUB_OUTPUT
          echo "is_prerelease=$IS_PRERELEASE" >> $GITHUB_OUTPUT

      - name: Create GitHub release
        id: github-release
        uses: release-drafter/release-drafter@v6
        with:
          config-name: release-drafter-python.yml
          name: Python Polars ${{ steps.version.outputs.version }}
          tag: py-${{ steps.version.outputs.version }}
          version: ${{ steps.version.outputs.version }}
          prerelease: ${{ steps.version.outputs.is_prerelease }}
          commitish: ${{ inputs.sha || github.sha }}
          disable-autolabeler: true
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Upload sdist to GitHub release
        run: gh release upload $TAG $FILES --clobber
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          TAG: ${{ steps.github-release.outputs.tag_name }}
          FILES: dist/polars-*.tar.gz

      - name: Publish GitHub release
        if: inputs.dry-run == false
        run: gh release edit $TAG --draft=false
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          TAG: ${{ steps.github-release.outputs.tag_name }}

      - name: Trigger other workflows related to the release
        if: inputs.dry-run == false && steps.version.outputs.is_prerelease == 'false'
        uses: peter-evans/repository-dispatch@v3
        with:
          event-type: python-release
          client-payload: >
            {
              "version": "${{ steps.version.outputs.version }}",
              "tag": "${{ steps.github-release.outputs.tag_name }}",
              "sha": "${{ inputs.sha || github.sha }}"
            }