Add metrohash riscv64 wheel build

.github/workflows/build-metrohash.yml

@@ -0,0 +1,101 @@
+# SPDX-FileCopyrightText: 2026 The RISE Project
+# SPDX-License-Identifier: MIT
+---
+# Based on the `build_wheels` job of
+# https://github.com/escherba/python-metrohash/blob/master/.github/workflows/publish.yml
+name: Build metrohash wheels (riscv64)
+
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: 'Version glob to (re)build; empty builds every version of docs/packages/metrohash.yaml not released yet'
+        required: false
+        default: ''
+  pull_request:
+    branches: [main]
+    paths:
+      - '.github/workflows/build-metrohash.yml'
+      - 'docs/packages/metrohash.yaml'
+  push:
+    branches: [main]
+    paths:
+      - '.github/workflows/build-metrohash.yml'
+      - 'docs/packages/metrohash.yaml'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+permissions:
+  contents: read  # to fetch code (actions/checkout)
+
+env:
+  # Upstream cuts the 0.4.1 release without pushing a git tag; this commit's
+  # setup.py already reads VERSION = "0.4.1" and its tree matches the released
+  # sdist (aside from CI/test infra files the sdist never ships). Update
+  # alongside METROHASH_VERSION once a later release either gets a tag or
+  # needs the same commit-pinning treatment.
+  METROHASH_REF: c3bfb4d5f3eeafea604b367fd60bdda918da5f0d
+  MANYLINUX_RISCV64_IMAGE: quay.io/pypa/manylinux_2_39_riscv64
+
+jobs:
+  setup:
+    uses: $/.github/workflows/_setup.yml
+    with:
+      package: metrohash
+      version: ${{ inputs.version }}
+
+  build_wheels:
+    needs: [setup]
+    if: needs.setup.outputs.versions != '[]'
+    name: Build metrohash ${{ matrix.version }} ${{ matrix.python }}-manylinux_riscv64
+    runs-on: ubuntu-24.04-riscv
+    timeout-minutes: 60
+    strategy:
+      fail-fast: false
+      matrix:
+        version: ${{ fromJSON(needs.setup.outputs.versions) }}
+        python: ["cp312", "cp313", "cp314", "cp314t"]
+
+    env:
+      METROHASH_VERSION: ${{ matrix.version }}
+
+    steps:
+      - name: Checkout metrohash ${{ env.METROHASH_REF }}
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7.0.1
+        with:
+          repository: escherba/python-metrohash
+          ref: ${{ env.METROHASH_REF }}
+          persist-credentials: false
+
+      - uses: pypa/cibuildwheel@1828c10ab37f080699c7b81cea34097c684a7074  # v4.2.0
+        env:
+          CIBW_ARCHS: riscv64
+          CIBW_BUILD: ${{ matrix.python }}-manylinux_riscv64
+          CIBW_MANYLINUX_RISCV64_IMAGE: ${{ env.MANYLINUX_RISCV64_IMAGE }}
+          CIBW_TEST_REQUIRES: pytest
+          CIBW_TEST_COMMAND: pytest -s {project}/tests
+
+      - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a  # v7.0.1
+        with:
+          name: metrohash-${{ env.METROHASH_VERSION }}-${{ matrix.python }}-manylinux_riscv64
+          path: ./wheelhouse/*.whl
+          if-no-files-found: error
+
+  publish:
+    name: Publish metrohash ${{ matrix.version }}
+    needs: [setup, build_wheels]
+    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: ${{ secrets.RISEPROJECT_APP_PRIVATE_KEY }}
+    with:
+      artifact-pattern: metrohash-${{ matrix.version }}-*-manylinux_riscv64

docs/packages/metrohash.yaml

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+package-name: metrohash
+source-code: https://github.com/escherba/python-metrohash
+license: Apache License 2.0
+versions:
+- version: 0.4.1