workflows: add build-apache-tvm-ffi.yml for riscv64 manywheel builds #1

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.github/workflows/build-apache-tvm-ffi.yml at 41d2977

	# SPDX-FileCopyrightText: 2026 The RISE Project
	# SPDX-License-Identifier: MIT
	---
	# This workflow is based on upstream's own wheel build/publish setup:
	# https://github.com/apache/tvm-ffi/blob/v0.1.12/.github/workflows/publish_wheel.yml
	# https://github.com/apache/tvm-ffi/blob/v0.1.12/.github/actions/build-wheel-for-publish/action.yml
	name: Build apache-tvm-ffi wheels (riscv64)

	on:
	workflow_dispatch:
	inputs:
	version:
	description: 'apache-tvm-ffi version to build (git tag without leading v, e.g. 0.1.12)'
	required: true
	default: '0.1.12'
	pull_request:
	paths:
	- '.github/workflows/build-apache-tvm-ffi.yml'

	concurrency:
	group: ${{ github.workflow }}-${{ inputs.version \|\| '0.1.12' }}-${{ github.head_ref \|\| github.run_id }}
	cancel-in-progress: true

	permissions:
	contents: read # to fetch code (actions/checkout)

	env:
	# `inputs.version` is empty on pull_request events; default to 0.1.12 there.
	TVM_FFI_VERSION: ${{ inputs.version \|\| '0.1.12' }}
	UV_EXTRA_INDEX_URL: https://pypi.riseproject.dev/simple/
	UV_INDEX_STRATEGY: unsafe-best-match
	UV_ONLY_BINARY: ':all:'
	MANYLINUX_RISCV64_IMAGE: quay.io/pypa/manylinux_2_39_riscv64

	jobs:
	build_sdist:
	# The sdist is architecture-independent: it just packages the source tree,
	# the vendored submodules (dlpack, libbacktrace) and a setuptools-scm-derived
	# _version.py. Build it once on x86 instead of burning a scarce riscv runner
	# (see CLAUDE.md gotcha 4). The resulting sdist is self-contained, so the
	# riscv wheel job below needs neither git history nor submodules.
	name: Build apache-tvm-ffi ${{ inputs.version \|\| '0.1.12' }} sdist
	runs-on: ubuntu-latest
	permissions:
	contents: read
	outputs:
	sdist_name: ${{ steps.sdist.outputs.sdist_name }}
	steps:
	- name: Checkout tvm-ffi v${{ env.TVM_FFI_VERSION }}
	uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
	with:
	repository: apache/tvm-ffi
	ref: v${{ env.TVM_FFI_VERSION }}
	# submodules must be present so pyproject's sdist.include /3rdparty/**
	# globs actually bundle dlpack + libbacktrace; setuptools-scm needs the
	# full history + tags to derive the version from the checked-out tag.
	submodules: recursive
	fetch-depth: 0
	fetch-tags: true
	persist-credentials: false

	- name: Install Python
	uses: astral-sh/setup-uv@fac544c07dec837d0ccb6301d7b5580bf5edae39 # v8.2.0
	with:
	python-version: '3.12'
	activate-environment: true
	enable-cache: false

	- name: Build sdist
	id: sdist
	run: \|
	uv pip install build twine
	python -m build --sdist
	twine check dist/*
	sdists=(dist/*.tar.gz)
	echo "sdist_name=$(basename "${sdists[0]}")" >> "$GITHUB_OUTPUT"

	- name: Upload sdist artifact
	uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
	with:
	name: apache-tvm-ffi-${{ env.TVM_FFI_VERSION }}-sdist
	path: dist/*.tar.gz
	if-no-files-found: error

	build_wheels:
	needs: build_sdist
	name: Build apache-tvm-ffi ${{ inputs.version \|\| '0.1.12' }} ${{ matrix.python }}-manylinux_riscv64
	runs-on: ubuntu-24.04-riscv
	permissions:
	contents: read
	strategy:
	fail-fast: false
	matrix:
	# Wheels are abi3 (pyproject sets wheel.py-api = "cp312"), so the single
	# cp312 build is loadable on 3.12/3.13/3.14; only the free-threaded
	# cp314t build needs its own wheel. This is upstream's cibuildwheel
	# `build` list (cp38..cp312 + cp314t) collapsed to the two that differ.
	python: [cp312, cp314t]
	steps:
	- name: Download sdist
	uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
	with:
	name: apache-tvm-ffi-${{ env.TVM_FFI_VERSION }}-sdist
	path: dist/

	- name: Build wheels
	uses: pypa/cibuildwheel@1828c10ab37f080699c7b81cea34097c684a7074 # v4.2.0
	with:
	# cibuildwheel accepts an sdist tarball directly: it extracts it and
	# builds from the self-contained tree (no submodules/git needed here).
	package-dir: dist/${{ needs.build_sdist.outputs.sdist_name }}
	env:
	CIBW_BUILD: ${{ matrix.python }}-*
	# pyproject pins [tool.cibuildwheel.linux] archs to x86_64+aarch64;
	# override so this native riscv runner builds the riscv64 wheel.
	CIBW_ARCHS: riscv64
	CIBW_SKIP: '-musllinux_'
	CIBW_MANYLINUX_RISCV64_IMAGE: ${{ env.MANYLINUX_RISCV64_IMAGE }}
	# The build frontend (build[uv]), test-command
	# (pytest {package}/tests/python) and test-groups (["test"] pulls in
	# torch/numpy/ml_dtypes/pytest/ninja) are all inherited from the sdist's
	# pyproject.toml, so we build and test exactly the way upstream does.
	#
	# CIBW_ENVIRONMENT applies to BOTH the build and test phases. We only
	# point pip/uv at our registry here (needed so test deps resolve, and
	# harmless at build time). We deliberately do NOT set ONLY_BINARY here:
	# the build backend needs cython>=3.0, which has no riscv64 wheel on
	# any index and must be compiled from its sdist inside the container.
	CIBW_ENVIRONMENT: >-
	PIP_EXTRA_INDEX_URL=https://pypi.riseproject.dev/simple/
	UV_EXTRA_INDEX_URL=https://pypi.riseproject.dev/simple/
	UV_INDEX_STRATEGY=unsafe-best-match
	# Test phase only: force wheels-only so a missing riscv64 wheel for a
	# heavy test dep (torch/numpy/ml_dtypes) fails fast instead of silently
	# kicking off a multi-hour source build under the runner. GPU-only tests
	# self-skip via torch.cuda.is_available().
	CIBW_TEST_ENVIRONMENT: >-
	PIP_ONLY_BINARY=:all:
	UV_ONLY_BINARY=:all:

	- uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
	with:
	name: apache-tvm-ffi-${{ env.TVM_FFI_VERSION }}-${{ matrix.python }}-manylinux_riscv64
	path: ./wheelhouse/*.whl
	if-no-files-found: error

	publish:
	name: Publish apache-tvm-ffi ${{ inputs.version \|\| '0.1.12' }} to GitLab
	needs: [build_wheels]
	runs-on: ubuntu-latest
	permissions:
	contents: write
	pull-requests: write

	steps:
	- name: Publish wheels and open docs PR
	uses: riseproject-dev/python-wheels/actions/publish-wheels@main
	with:
	artifact-pattern: apache-tvm-ffi-${{ env.TVM_FFI_VERSION }}-*-manylinux_riscv64
	gitlab-username: ${{ vars.GITLAB_DEPLOY_USER }}
	gitlab-token: ${{ secrets.GITLAB_DEPLOY_TOKEN }}
	gitlab-project-id: ${{ vars.GITLAB_PROJECT_ID }}
	gh-token: ${{ secrets.GITHUB_TOKEN }}

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workflows: add build-apache-tvm-ffi.yml for riscv64 manywheel builds #1

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