phik: add build-phik.yml for riscv64 wheels

.github/workflows/build-phik.yml

@@ -0,0 +1,92 @@
+# SPDX-FileCopyrightText: 2026 The RISE Project
+# SPDX-License-Identifier: MIT
+---
+# This workflow is based on: https://github.com/KaveIO/PhiK/blob/v0.12.5/.github/workflows/wheels.yml
+name: Build phik wheels (riscv64)
+
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: 'phik version to build (git tag without the leading v, e.g. 0.12.5)'
+        required: true
+        default: '0.12.5'
+  pull_request:
+    paths:
+      - '.github/workflows/build-phik.yml'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ inputs.version || '0.12.5' }}-${{ 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 0.12.5 there.
+  PHIK_VERSION: ${{ inputs.version || '0.12.5' }}
+  MANYLINUX_RISCV64_IMAGE: quay.io/pypa/manylinux_2_39_riscv64
+
+jobs:
+  setup:
+    uses: $/.github/workflows/_setup.yml
+
+  build_wheels:
+    needs: [setup]
+    name: Build phik ${{ inputs.version || '0.12.5' }} ${{ matrix.python }}-manylinux_riscv64
+    runs-on: ubuntu-24.04-riscv
+    timeout-minutes: 90
+    strategy:
+      fail-fast: false
+      matrix:
+        # Per-interpreter, matching upstream's own cp39-cp314 matrix, minus cp39:
+        # matplotlib (a hard runtime dependency) has no riscv64 wheel on
+        # pypi.riseproject.dev for cp39, which would fall back to a from-source build
+        # during the test-install step.
+        python:
+          - "cp310"
+          - "cp311"
+          - "cp312"
+          - "cp313"
+          - "cp314"
+
+    steps:
+      - name: Checkout PhiK v${{ env.PHIK_VERSION }}
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7.0.1
+        with:
+          repository: KaveIO/PhiK
+          ref: v${{ env.PHIK_VERSION }}
+          persist-credentials: false
+
+      - name: Build wheels
+        uses: pypa/cibuildwheel@1828c10ab37f080699c7b81cea34097c684a7074  # v4.2.0
+        with:
+          output-dir: wheelhouse/
+          only: ${{ matrix.python }}-manylinux_riscv64
+        env:
+          CIBW_MANYLINUX_RISCV64_IMAGE: ${{ env.MANYLINUX_RISCV64_IMAGE }}
+          # scikit-build-core fetches cmake/ninja from PyPI when missing on PATH,
+          # and pybind11's headers need pip to resolve.
+          CIBW_ENVIRONMENT: PIP_EXTRA_INDEX_URL=https://pypi.riseproject.dev/simple/
+          CIBW_TEST_EXTRAS: test
+          # numpy/scipy/pandas/matplotlib/pillow have riscv64 wheels only on our registry,
+          # which lags Pillow's public-PyPI releases; unpinned, pip resolves the newest
+          # Pillow sdist and fails building it (no libjpeg headers in the image).
+          CIBW_TEST_ENVIRONMENT: PIP_ONLY_BINARY=numpy,scipy,pandas,matplotlib,pillow
+          CIBW_TEST_COMMAND: pytest {project}/tests/test_phik.py -W ignore::DeprecationWarning
+
+      - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a  # v7.0.1
+        with:
+          name: phik-${{ env.PHIK_VERSION }}-${{ matrix.python }}-manylinux_riscv64
+          path: wheelhouse/*.whl
+          if-no-files-found: error
+
+  publish:
+    name: Publish phik ${{ inputs.version || '0.12.5' }}
+    needs: [setup, build_wheels]
+    permissions:
+      contents: write
+      pull-requests: write
+    uses: $/.github/workflows/_publish-wheel.yml
+    with:
+      artifact-pattern: phik-${{ inputs.version || '0.12.5' }}-*-manylinux_riscv64