luhenry · Oct 14, 2026
diff --git a/.github/workflows/build-pymetis.yml b/.github/workflows/build-pymetis.yml
@@ -0,0 +1,158 @@
+# SPDX-FileCopyrightText: 2026 The RISE Project
+# SPDX-License-Identifier: MIT
+---
+# Based on the `build_wheels` job of
+# https://github.com/inducer/pymetis/blob/v2025.2.2/.github/workflows/wheels.yml
+name: Build pymetis wheels (riscv64)
+
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: 'Version glob to (re)build; empty builds every version of docs/packages/pymetis.yaml not released yet'
+        required: false
+        default: ''
+  pull_request:
+    branches: [main]
+    paths:
+      - '.github/workflows/build-pymetis.yml'
+      - 'docs/packages/pymetis.yaml'
+  push:
+    branches: [main]
+    paths:
+      - '.github/workflows/build-pymetis.yml'
+      - 'docs/packages/pymetis.yaml'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+permissions:
+  contents: read  # to fetch code (actions/checkout)
+
+env:
+  MANYLINUX_RISCV64_IMAGE: quay.io/pypa/manylinux_2_39_riscv64
+  MUSLLINUX_RISCV64_IMAGE: quay.io/pypa/musllinux_1_2_riscv64
+
+jobs:
+  setup:
+    uses: $/.github/workflows/_setup.yml
+    with:
+      package: pymetis
+      version: ${{ inputs.version }}
+
+  build_wheels:
+    needs: [setup]
+    if: needs.setup.outputs.versions != '[]'
+    name: Build pymetis ${{ matrix.version }} ${{ matrix.python }}-${{ matrix.libc }}_riscv64
+    runs-on: ubuntu-24.04-riscv
+    strategy:
+      fail-fast: false
+      matrix:
+        version: ${{ fromJSON(needs.setup.outputs.versions) }}
+        python: ["cp312", "cp313", "cp314", "cp314t"]
+        libc: [manylinux, musllinux]
+
+    env:
+      PYMETIS_VERSION: ${{ matrix.version }}
+
+    steps:
+      - name: Checkout pymetis v${{ env.PYMETIS_VERSION }}
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7.0.1
+        with:
+          repository: inducer/pymetis
+          ref: v${{ env.PYMETIS_VERSION }}
+          persist-credentials: false
+
+      - name: Checkout python-wheels
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7.0.1
+        with:
+          path: python-wheels
+          persist-credentials: false
+
+      - name: Patch pymetis source
+        run: git apply python-wheels/patches/pymetis/${{ env.PYMETIS_VERSION }}/*.patch
+
+      - uses: pypa/cibuildwheel@1828c10ab37f080699c7b81cea34097c684a7074  # v4.2.0
+        with:
+          output-dir: wheelhouse/
+          only: ${{ matrix.python }}-${{ matrix.libc }}_riscv64
+        env:
+          CIBW_MANYLINUX_RISCV64_IMAGE: ${{ env.MANYLINUX_RISCV64_IMAGE }}
+          CIBW_MUSLLINUX_RISCV64_IMAGE: ${{ env.MUSLLINUX_RISCV64_IMAGE }}
+          CIBW_ENVIRONMENT: PIP_EXTRA_INDEX_URL=https://pypi.riseproject.dev/simple/ PIP_ONLY_BINARY=numpy
+          # upstream's wheels.yml tests nothing; run the pytest suite its ci.yml runs
+          CIBW_TEST_REQUIRES: numpy pytest
+          CIBW_TEST_SOURCES: test
+          CIBW_TEST_COMMAND: python -m pytest -v test
+          # numpy has no riscv64 musllinux wheel in our registry.
+          CIBW_TEST_SKIP: "*-musllinux*"
+
+      - name: Check the extension and licences made it into the wheel
+        run: |
+          python3 - wheelhouse/*.whl <<'EOF'
+          import sys, zipfile
+          for whl in sys.argv[1:]:
+              names = zipfile.ZipFile(whl).namelist()
+              assert any(n.startswith("pymetis/_internal.") and n.endswith(".so") for n in names), names
+              licences = {n.split(".dist-info/licenses/", 1)[1] for n in names if ".dist-info/licenses/" in n and not n.endswith("/")}
+              assert licences == {"LICENSE", "LICENSE.pybind11", "src/metis/LICENSE.txt"}, (whl, licences)
+              print(whl, "ok")
+          EOF
+
+      - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a  # v7.0.1
+        with:
+          name: pymetis-${{ env.PYMETIS_VERSION }}-${{ matrix.python }}-${{ matrix.libc }}_riscv64
+          path: ./wheelhouse/*.whl
+          if-no-files-found: error
+
+  gpl_sources:
+    needs: [setup]
+    if: needs.setup.outputs.versions != '[]'
+    strategy:
+      fail-fast: false
+      matrix:
+        version: ${{ fromJSON(needs.setup.outputs.versions) }}
+    name: Collect GPL sources for pymetis ${{ matrix.version }}
+    runs-on: ubuntu-24.04-riscv
+
+    env:
+      PYMETIS_VERSION: ${{ matrix.version }}
+
+    steps:
+      - name: Checkout python-wheels
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7.0.1
+        with:
+          persist-credentials: false
+
+      # The musllinux wheel vendors the image's libstdc++ and libgcc_s (gotcha 409).
+      - uses: ./actions/collect-gpl-sources
+        with:
+          image: ${{ env.MANYLINUX_RISCV64_IMAGE }}
+          packages: gcc
+          output: gpl-sources.tar
+
+      - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a  # v7.0.1
+        with:
+          name: pymetis-${{ env.PYMETIS_VERSION }}-gpl-sources
+          path: gpl-sources.tar
+          if-no-files-found: error
+
+  publish:
+    name: Publish pymetis ${{ matrix.version }}
+    needs: [setup, build_wheels, gpl_sources]
+    if: needs.setup.outputs.versions != '[]'
+    strategy:
+      fail-fast: false
+      matrix:
+        version: ${{ fromJSON(needs.setup.outputs.versions) }}
+    permissions:
+      contents: write
+      pull-requests: write
+    uses: $/.github/workflows/_publish-wheel.yml
+    secrets:
+      app-private-key: ${{ secrets.RISEPROJECT_APP_PRIVATE_KEY }}
+    with:
+      artifact-pattern: pymetis-${{ matrix.version }}-*riscv64
+      gpl-sources-artifact: pymetis-${{ matrix.version }}-gpl-sources
+      gpl-sources-description: gcc
diff --git a/docs/packages/pymetis.yaml b/docs/packages/pymetis.yaml
@@ -0,0 +1,6 @@
+package-name: pymetis
+source-code: https://github.com/inducer/pymetis
+license: MIT AND Apache-2.0
+versions:
+- version: 2025.2.2
+  patched: true
diff --git a/patches/pymetis/2025.2.2/0001-pyproject-ship-the-METIS-and-pybind11-licences-in-th.patch b/patches/pymetis/2025.2.2/0001-pyproject-ship-the-METIS-and-pybind11-licences-in-th.patch
@@ -0,0 +1,73 @@
+From 5290f985605abfb79f008e7bcfeb59a5682dc109 Mon Sep 17 00:00:00 2001
+From: Ludovic Henry <git@ludovic.dev>
+Date: Wed, 14 Oct 2026 11:02:42 +0000
+Subject: [PATCH] pyproject: ship the METIS and pybind11 licences in the wheel
+
+meson-python only writes dist-info/licenses/ entries for files named in
+`[project] license-files`, and has no PEP 639 default glob behind it, so
+every wheel built from this tree ships no licence text at all -- not
+pymetis' own MIT LICENSE, not the Apache-2.0 notice of the METIS/GKlib
+sources compiled into _internal, and not the BSD-3-Clause notice of the
+pybind11 headers instantiated into it. Upstream's PyPI wheels carry the
+same gap.
+
+List the three explicitly; LICENSE.pybind11 is pybind11's own LICENSE,
+verbatim from its v3.1.0 tag.
+
+Upstream-Status: To upstream [not yet submitted; python-wheels does not open issues/PRs on third-party repos]
+---
+ LICENSE.pybind11 | 29 +++++++++++++++++++++++++++++
+ pyproject.toml   |  1 +
+ 2 files changed, 30 insertions(+)
+ create mode 100644 LICENSE.pybind11
+
+diff --git a/LICENSE.pybind11 b/LICENSE.pybind11
+new file mode 100644
+index 0000000..e466b0d
+--- /dev/null
++++ b/LICENSE.pybind11
+@@ -0,0 +1,29 @@
++Copyright (c) 2016 Wenzel Jakob <wenzel.jakob@epfl.ch>, All rights reserved.
++
++Redistribution and use in source and binary forms, with or without
++modification, are permitted provided that the following conditions are met:
++
++1. Redistributions of source code must retain the above copyright notice, this
++   list of conditions and the following disclaimer.
++
++2. Redistributions in binary form must reproduce the above copyright notice,
++   this list of conditions and the following disclaimer in the documentation
++   and/or other materials provided with the distribution.
++
++3. Neither the name of the copyright holder nor the names of its contributors
++   may be used to endorse or promote products derived from this software
++   without specific prior written permission.
++
++THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
++ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
++WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
++DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
++FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
++DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
++SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
++CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
++OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
++OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
++
++Please also refer to the file .github/CONTRIBUTING.md, which clarifies licensing of
++external contributions to this project including patches, pull requests, etc.
+diff --git a/pyproject.toml b/pyproject.toml
+index 69aac21..3a5b2f7 100644
+--- a/pyproject.toml
++++ b/pyproject.toml
+@@ -11,6 +11,7 @@ version = "2025.2.2"
+ description = "A graph partitioning package"
+ readme = "README.rst"
+ license = "MIT AND Apache-2.0"
++license-files = ["LICENSE", "LICENSE.pybind11", "src/metis/LICENSE.txt"]
+ maintainers = [ { name = "Andreas Kloeckner", email = "inform@tiker.net" } ]
+ authors = [ { name = "Andreas Kloeckner", email = "inform@tiker.net" } ]
+ requires-python = ">=3.10"
+-- 
+2.43.0
+