build.yml

on:
  workflow_call:
    inputs:
      os:
        required: true
        type: string
      python-version:
        required: true
        type: string
      python-architecture:
        required: true
        type: string
      rust:
        required: true
        type: string
      rust-target:
        required: true
        type: string
      MSRV:
        required: true
        type: string

jobs:
  build:
    continue-on-error: ${{ endsWith(inputs.python-version, '-dev') || contains(fromJSON('["3.7", "3.8"]'), inputs.python-version) || contains(fromJSON('["beta", "nightly"]'), inputs.rust) }}
    runs-on: ${{ inputs.os }}
    if: ${{ !(startsWith(inputs.python-version, 'graalpy') && startsWith(inputs.os, 'windows')) }}
    steps:
      - uses: actions/checkout@v4

      - name: Set up Python ${{ inputs.python-version }}
        uses: actions/setup-python@v5
        with:
          python-version: ${{ inputs.python-version }}
          architecture: ${{ inputs.python-architecture }}
          check-latest: ${{ startsWith(inputs.python-version, 'pypy') }}  # PyPy can have FFI changes within Python versions, which creates pain in CI

      - name: Install nox
        run: python -m pip install --upgrade pip && pip install nox

      - name: Install Rust toolchain
        uses: dtolnay/rust-toolchain@master
        with:
          toolchain: ${{ inputs.rust }}
          targets: ${{ inputs.rust-target }}
          # needed to correctly format errors, see #1865
          components: rust-src

      - uses: Swatinem/rust-cache@v2
        with:
          save-if: ${{ github.event_name != 'merge_group' }}

      - if: inputs.os == 'ubuntu-latest'
        name: Prepare LD_LIBRARY_PATH (Ubuntu only)
        run: echo LD_LIBRARY_PATH=${pythonLocation}/lib >> $GITHUB_ENV

      - if: inputs.rust == inputs.MSRV
        name: Prepare MSRV package versions
        run: nox -s set-msrv-package-versions

      - if: inputs.rust != 'stable'
        name: Ignore changed error messages when using trybuild
        run: echo "TRYBUILD=overwrite" >> "$GITHUB_ENV"

      - if: inputs.rust == 'nightly'
        name: Prepare to test on nightly rust
        run: echo "MAYBE_NIGHTLY=nightly" >> "$GITHUB_ENV"

      - name: Build docs
        run: nox -s docs

      - name: Build (no features)
        if: ${{ !startsWith(inputs.python-version, 'graalpy') }}
        run: cargo build --lib --tests --no-default-features

      # --no-default-features when used with `cargo build/test -p` doesn't seem to work!
      - name: Build pyo3-build-config (no features)
        run: |
          cd pyo3-build-config
          cargo build --no-default-features

      # Run tests (except on PyPy, because no embedding API).
      - if: ${{ !startsWith(inputs.python-version, 'pypy') && !startsWith(inputs.python-version, 'graalpy') }}
        name: Test (no features)
        run: cargo test --no-default-features --lib --tests

      # --no-default-features when used with `cargo build/test -p` doesn't seem to work!
      - name: Test pyo3-build-config (no features)
        run: |
          cd pyo3-build-config
          cargo test --no-default-features

      - name: Build (all additive features)
        if: ${{ !startsWith(inputs.python-version, 'graalpy') }}
        run: cargo build --lib --tests --no-default-features --features "multiple-pymethods full $MAYBE_NIGHTLY"

      - if: ${{ startsWith(inputs.python-version, 'pypy') }}
        name: Build PyPy (abi3-py39)
        run: cargo build --lib --tests --no-default-features --features "multiple-pymethods abi3-py39 full $MAYBE_NIGHTLY"

      # Run tests (except on PyPy, because no embedding API).
      - if: ${{ !startsWith(inputs.python-version, 'pypy') && !startsWith(inputs.python-version, 'graalpy') }}
        name: Test
        run: cargo test --no-default-features --features "full $MAYBE_NIGHTLY"

      # Repeat, with multiple-pymethods feature enabled (it's not entirely additive)
      - if: ${{ !startsWith(inputs.python-version, 'pypy') && !startsWith(inputs.python-version, 'graalpy') }}
        name: Test
        run: cargo test --no-default-features --features "multiple-pymethods full $MAYBE_NIGHTLY"

      # Run tests again, but in abi3 mode
      - if: ${{ !startsWith(inputs.python-version, 'pypy') && !startsWith(inputs.python-version, 'graalpy') }}
        name: Test (abi3)
        run: cargo test --no-default-features --features "multiple-pymethods abi3 full $MAYBE_NIGHTLY"

      # Run tests again, for abi3-py37 (the minimal Python version)
      - if: ${{ (!startsWith(inputs.python-version, 'pypy') && !startsWith(inputs.python-version, 'graalpy')) && (inputs.python-version != '3.7') }}
        name: Test (abi3-py37)
        run: cargo test --no-default-features --features "multiple-pymethods abi3-py37 full $MAYBE_NIGHTLY"

      - name: Test proc-macro code
        run: cargo test --manifest-path=pyo3-macros-backend/Cargo.toml

      - name: Test build config
        run: cargo test --manifest-path=pyo3-build-config/Cargo.toml

      - name: Test python examples and tests
        shell: bash
        run: nox -s test-py
        env:
          CARGO_TARGET_DIR: ${{ github.workspace }}/target

      - uses: dorny/paths-filter@v3
        if: ${{ inputs.rust == 'stable' && !startsWith(inputs.python-version, 'graalpy') }}
        id: ffi-changes
        with:
          base: ${{ github.event.pull_request.base.ref || github.event.merge_group.base_ref }}
          ref: ${{ github.event.pull_request.head.ref || github.event.merge_group.head_ref }}
          filters: |
            changed:
              - 'pyo3-ffi/**'
              - 'pyo3-ffi-check/**'
              - '.github/workflows/ci.yml'
              - '.github/workflows/build.yml'

      - name: Run pyo3-ffi-check
        # pypy 3.9 on windows is not PEP 3123 compliant, nor is graalpy
        if: ${{ endsWith(inputs.python-version, '-dev') || (steps.ffi-changes.outputs.changed == 'true' && inputs.rust == 'stable' && !startsWith(inputs.python-version, 'graalpy') && !(inputs.python-version == 'pypy3.9' && contains(inputs.os, 'windows'))) }}
        run: nox -s ffi-check

    env:
      CARGO_TERM_VERBOSE: true
      CARGO_BUILD_TARGET: ${{ inputs.rust-target }}
      RUST_BACKTRACE: 1
      RUSTFLAGS: "-D warnings"
      RUSTDOCFLAGS: "-D warnings"