moderngl: add build-moderngl.yml for riscv64 wheels

.github/workflows/build-moderngl.yml

@@ -0,0 +1,96 @@
+# SPDX-FileCopyrightText: 2026 The RISE Project
+# SPDX-License-Identifier: MIT
+---
+# This workflow is based on: https://github.com/moderngl/moderngl/blob/5.12.0/.github/workflows/release.yml
+name: Build moderngl wheels (riscv64)
+
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: 'moderngl version to build (git tag, e.g. 5.12.0)'
+        required: true
+        default: '5.12.0'
+  pull_request:
+    paths:
+      - '.github/workflows/build-moderngl.yml'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ inputs.version || '5.12.0' }}-${{ 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 5.12.0 there.
+  MODERNGL_VERSION: ${{ inputs.version || '5.12.0' }}
+  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
+
+  build_wheels:
+    needs: [setup]
+    name: Build moderngl ${{ inputs.version || '5.12.0' }} ${{ matrix.python }}-${{ matrix.libc }}_riscv64
+    runs-on: ubuntu-24.04-riscv
+    timeout-minutes: 60
+    strategy:
+      fail-fast: false
+      matrix:
+        python: ["cp312", "cp313", "cp314", "cp314t"]
+        libc: [manylinux, musllinux]
+
+    steps:
+      - name: Checkout moderngl ${{ env.MODERNGL_VERSION }}
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7.0.1
+        with:
+          repository: moderngl/moderngl
+          ref: ${{ env.MODERNGL_VERSION }}
+          persist-credentials: false
+
+      - 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/ LIBGL_ALWAYS_SOFTWARE=1
+          # Upstream's own pytest suite (tests/, via a standalone EGL context -
+          # see tests/conftest.py) needs numpy/scipy/PyOpenGL, which have no
+          # musllinux riscv64 wheel on either PyPI or our registry, so musllinux
+          # gets the lighter EGL-context smoke test instead of the full suite.
+          # test_local.py asserts the tests dir sits next to an editable install
+          # (upstream's own Containerfile runs `setup.py build_ext --inplace`
+          # first); it never holds for a wheel installed into its own venv.
+          CIBW_TEST_REQUIRES: ${{ matrix.libc == 'manylinux' && 'pytest numpy scipy PyOpenGL' || '' }}
+          CIBW_TEST_COMMAND: ${{ matrix.libc == 'manylinux' && 'python -m pytest {project}/tests -v -k "not test_local"' || 'python3 -c ''from glcontext import egl; import moderngl; ctx = moderngl.create_context(standalone=True, context=egl.create_context(glversion=330, mode="standalone")); print(ctx.info); ctx.release()''' }}
+
+      - name: Check the compiled extension made it into the wheel
+        run: |
+          python3 - wheelhouse/*.whl <<'EOF'
+          import sys, zipfile
+          for whl in sys.argv[1:]:
+              names = zipfile.ZipFile(whl).namelist()
+              assert any(n.startswith("moderngl/mgl.") and n.endswith(".so") for n in names), whl
+              print(whl, "ok")
+          EOF
+
+      - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a  # v7.0.1
+        with:
+          name: moderngl-${{ env.MODERNGL_VERSION }}-${{ matrix.python }}-${{ matrix.libc }}_riscv64
+          path: ./wheelhouse/*.whl
+          if-no-files-found: error
+
+  publish:
+    name: Publish moderngl ${{ inputs.version || '5.12.0' }}
+    needs: [setup, build_wheels]
+    permissions:
+      contents: write
+      pull-requests: write
+    uses: $/.github/workflows/_publish-wheel.yml
+    with:
+      artifact-pattern: moderngl-${{ inputs.version || '5.12.0' }}-*riscv64