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build-cffi.yml: add
Follow the development guide's best practices to create a cffi workflow, with changes to use uv and simplify the build matrix. A new build of cffi for version v2.1.0 is ultimately needed to get the matplotlib workflow to succeed without building cffi from source, so add it first. Ref: #64 Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com>
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‎.github/workflows/build-cffi.yml‎

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---
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name: Build cffi wheels (riscv64)
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on:
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workflow_dispatch:
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inputs:
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version:
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description: 'cffi version to build (git tag without leading v, e.g. 2.1.0)'
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required: true
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default: '2.1.0'
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pull_request:
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paths:
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- '.github/workflows/build-cffi.yml'
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concurrency:
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group: ${{ github.workflow }}-${{ inputs.version || '2.1.0' }}-${{ github.head_ref || github.run_id }}
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cancel-in-progress: true
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permissions:
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contents: read # to fetch code (actions/checkout)
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env:
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CFFI_VERSION: ${{ inputs.version || '2.1.0' }}
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UV_EXTRA_INDEX_URL: https://pypi.riseproject.dev/simple/
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UV_INDEX_STRATEGY: unsafe-best-match
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UV_ONLY_BINARY: ':all:'
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MANYLINUX_RISCV64_IMAGE: quay.io/pypa/manylinux_2_39_riscv64
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jobs:
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python_sdist:
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runs-on: ubuntu-24.04-riscv
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outputs:
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sdist_artifact_name: ${{ steps.build_sdist.outputs.sdist_artifact_name }}
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package_version: ${{ steps.build_sdist.outputs.package_version }}
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steps:
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- name: checkout cffi
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uses: actions/checkout@v7
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with:
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repository: python-cffi/cffi
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ref: v${{ env.CFFI_VERSION }}
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submodules: true
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persist-credentials: false
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- name: setup uv
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uses: astral-sh/setup-uv@fac544c07dec837d0ccb6301d7b5580bf5edae39 # v8.2.0
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with:
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python-version: '3.12'
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activate-environment: true
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enable-cache: false
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- name: build sdist
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id: build_sdist
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run: |
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rm -rf dist/
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uv pip install build
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python -m build --sdist
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echo "sdist_artifact_name=$(ls ./dist)" >> "$GITHUB_OUTPUT"
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echo "package_version=$(ls ./dist | sed -En 's/cffi-(.+)\.tar\.gz/\1/p')" >> "$GITHUB_OUTPUT"
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- name: upload sdist artifact
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uses: actions/upload-artifact@v7
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with:
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name: ${{ steps.build_sdist.outputs.sdist_artifact_name }}
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path: dist/${{ steps.build_sdist.outputs.sdist_artifact_name }}
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if-no-files-found: error
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# always upload the sdist artifact- all the wheel build jobs require it
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linux:
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# Unlike upstream, we depend only on python_sdist, since we don't need to
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# build a large matrix of targets
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needs: [python_sdist]
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name: Build cffi ${{ inputs.version || '2.1.0' }} ${{ matrix.python }}-manylinux_riscv64
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runs-on: ubuntu-24.04-riscv
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strategy:
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fail-fast: false
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matrix:
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python: ["cp312", "cp313", "cp314", "cp314t"]
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steps:
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- name: fetch sdist artifact
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id: fetch_sdist
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uses: actions/download-artifact@v8
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with:
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name: ${{ needs.python_sdist.outputs.sdist_artifact_name }}
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- name: setup uv
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uses: astral-sh/setup-uv@fac544c07dec837d0ccb6301d7b5580bf5edae39 # v8.2.0
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with:
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python-version: '3.12'
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activate-environment: true
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enable-cache: false
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- name: build/test wheels
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id: build
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env:
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CFLAGS: -Dffi_call=cffistatic_ffi_call # override name for ffi_call to break hard if we linked against someone else's libffi
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CIBW_BUILD: ${{ matrix.python }}-manylinux_riscv64
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CIBW_ENVIRONMENT_PASS_LINUX: CFLAGS # ensure that the build container can see our overridden build config
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CIBW_MANYLINUX_RISCV64_IMAGE: ${{ env.MANYLINUX_RISCV64_IMAGE }}
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CIBW_BEFORE_BUILD: |
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set -eux && \
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curl -L -O https://github.com/libffi/libffi/archive/v3.4.6.tar.gz && \
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tar zxf v3.4.6.tar.gz && cd libffi-3.4.6 && \
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((command -v apk && apk add libtool) || true) && \
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./autogen.sh && \
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./configure --without-gcc-arch --disable-docs --with-pic --enable-shared=no && \
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make install && \
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cd .. && \
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rm -rf libffi-3.4.6
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CIBW_TEST_REQUIRES: pytest setuptools meson-python ninja # 3.12+ no longer includes distutils, just always ensure setuptools is present
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CIBW_TEST_COMMAND: PYTHONUNBUFFERED=1 python -m pytest {project}
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run: |
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set -eux
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mkdir cffi
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tar zxf ${{ steps.fetch_sdist.outputs.download-path }}/cffi*.tar.gz --strip-components=1 -C cffi
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uv pip install --upgrade cibuildwheel
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# actually build libffi + wheel (using env tweaks above)
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python -m cibuildwheel --output-dir dist ./cffi
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echo "artifact_name=$(ls ./dist/)" >> "$GITHUB_OUTPUT"
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- uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
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with:
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name: cffi-${{ env.CFFI_VERSION }}-${{ matrix.python }}-manylinux_riscv64
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path: ./dist/*.whl
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if-no-files-found: error
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publish:
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name: Publish cffi ${{ inputs.version || '2.1.0' }} to GitLab
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needs: [linux]
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# Only publish when the workflow was triggered from main with a specific
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# version. Manual trigger is the only entry point, so checking the ref is
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# enough to gate uploads.
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if: github.ref == 'refs/heads/main'
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runs-on: ubuntu-latest
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permissions:
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contents: write
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pull-requests: write
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steps:
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- name: Publish wheels and open docs PR
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uses: riseproject-dev/python-wheels/actions/publish-wheels@main
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with:
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artifact-pattern: cffi-${{ env.CFFI_VERSION }}-*-manylinux_riscv64
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gitlab-username: ${{ vars.GITLAB_DEPLOY_USER }}
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gitlab-token: ${{ secrets.GITLAB_DEPLOY_TOKEN }}
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gitlab-project-id: ${{ vars.GITLAB_PROJECT_ID }}
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gh-token: ${{ secrets.GITHUB_TOKEN }}

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