release.yml

name: Release

on:
  push:
    tags: ['v*']

permissions:
  contents: read

jobs:
  build:
    runs-on: ubuntu-latest
    outputs:
      version: ${{ steps.version.outputs.version }}
    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
        with:
          persist-credentials: false

      - name: Set up Python
        uses: actions/setup-python@ece7cb06caefa5fff74198d8649806c4678c61a1 # v6.3.0
        with:
          python-version: '3.12'

      - name: Extract version from tag
        id: version
        env:
          GH_REF: ${{ github.ref }}
        run: |
          version="${GH_REF#refs/tags/v}"
          echo "version=$version" >> "$GITHUB_OUTPUT"

      - name: Ensure tag matches pyproject version
        env:
          TAG_VERSION: ${{ steps.version.outputs.version }}
        run: |
          python - <<'PY'
          from pathlib import Path
          import tomllib
          import os
          import sys

          data = tomllib.loads(Path("pyproject.toml").read_text(encoding="utf-8"))
          project_version = data["project"]["version"]
          tag_version = os.environ["TAG_VERSION"]
          if project_version != tag_version:
              print(
                  f"pyproject.toml version {project_version!r} does not match tag v{tag_version}",
                  file=sys.stderr,
              )
              raise SystemExit(1)
          PY

      - name: Install pinned pip
        run: python -m pip install --require-hashes -r requirements/pip.txt

      - name: Install build tools
        # Pin to specific versions so a compromised upstream cannot
        # substitute a malicious build backend or upload client during
        # the release. Bump these explicitly when upstream releases.
        run: python -m pip install --require-hashes -r requirements/release.txt

      - name: Build sdist and wheel
        run: python -m build --no-isolation

      - name: Check distribution metadata
        run: twine check dist/*

      - name: Upload build artifacts
        uses: actions/upload-artifact@cf430e030ddbb5b0abf93d22962f4752f3646cd9 # v7.0.2
        with:
          name: dist
          path: dist/

  publish-pypi:
    needs: [build]
    runs-on: ubuntu-latest
    environment:
      name: pypi
      url: https://pypi.org/p/pipelock-verify
    permissions:
      id-token: write
      # attestations: write is required for SLSA / Sigstore provenance
      # attachments on the published distributions (PEP 740).
      attestations: write
      contents: read
    steps:
      - name: Download build artifacts
        uses: actions/download-artifact@9000827ccba6bdab643e8b6fd33ac0654aef8333 # v8.0.2
        with:
          name: dist
          path: dist/

      - name: Publish to PyPI with attestations
        uses: pypa/gh-action-pypi-publish@cef221092ed1bacb1cc03d23a2d87d1d172e277b # v1.14.0
        with:
          # Emit SLSA / Sigstore attestations for each uploaded artifact
          # via the OIDC trusted publisher flow. Published alongside the
          # sdist and wheel so downstream consumers can verify provenance
          # with `gh attestation verify --owner luckyPipewrench`.
          attestations: true