impit: add build-impit.yml for riscv64 wheels

.github/workflows/build-impit.yml

@@ -0,0 +1,100 @@
+# SPDX-FileCopyrightText: 2026 The RISE Project
+# SPDX-License-Identifier: MIT
+---
+# This workflow is based on the `linux-build`/`linux-test` jobs of
+# https://github.com/apify/impit/blob/master/.github/workflows/python-test.yaml
+name: Build impit wheels (riscv64)
+
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: 'impit version to build (git tag without the leading py-, e.g. 0.14.1)'
+        required: true
+        default: '0.14.1'
+  pull_request:
+    paths:
+      - '.github/workflows/build-impit.yml'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ inputs.version || '0.14.1' }}-${{ 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 0.14.1 there.
+  IMPIT_VERSION: ${{ inputs.version || '0.14.1' }}
+  MANYLINUX_RISCV64_IMAGE: quay.io/pypa/manylinux_2_39_riscv64
+
+jobs:
+  setup:
+    uses: $/.github/workflows/_setup.yml
+
+  build_wheels:
+    needs: [setup]
+    name: Build impit ${{ inputs.version || '0.14.1' }} ${{ matrix.python }}-manylinux_riscv64
+    runs-on: ubuntu-24.04-riscv
+    timeout-minutes: 360
+    strategy:
+      fail-fast: false
+      matrix:
+        python: [cp312, cp313, cp314, cp314t]
+
+    steps:
+      - name: Checkout impit py-${{ env.IMPIT_VERSION }}
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7.0.1
+        with:
+          repository: apify/impit
+          ref: py-${{ env.IMPIT_VERSION }}
+          persist-credentials: false
+
+      - name: Checkout python-wheels
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7.0.1
+        with:
+          path: python-wheels
+          persist-credentials: false
+
+      - name: Patch impit source
+        run: git apply python-wheels/patches/impit/${{ env.IMPIT_VERSION }}/*.patch
+
+      - name: Build wheels
+        uses: pypa/cibuildwheel@1828c10ab37f080699c7b81cea34097c684a7074  # v4.2.0
+        with:
+          package-dir: impit-python
+          output-dir: wheelhouse/
+        env:
+          # musllinux is dropped: rustup.rs ships no riscv64 musl toolchain.
+          CIBW_BUILD: ${{ matrix.python }}-manylinux_riscv64
+          CIBW_MANYLINUX_RISCV64_IMAGE: ${{ env.MANYLINUX_RISCV64_IMAGE }}
+          # impit-python ships no [tool.cibuildwheel], so the Rust toolchain its
+          # maturin backend needs is installed in-container here.
+          CIBW_BEFORE_ALL_LINUX: >-
+            curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
+          CIBW_ENVIRONMENT_LINUX: PATH="$PATH:$HOME/.cargo/bin"
+          CIBW_TEST_REQUIRES: pytest pytest-asyncio pytest-rerunfailures pproxy
+          CIBW_TEST_SOURCES: >-
+            impit-python/test impit-python/pyproject.toml
+          CIBW_TEST_COMMAND: >-
+            cd impit-python &&
+            python -c "import impit.impit as m, importlib.metadata as md;
+            assert m.__file__.endswith('.so'), m.__file__;
+            assert any(str(p).endswith('licenses/LICENSE.md') for p in md.files('impit'))" &&
+            python -m pytest -v
+
+      - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a  # v7.0.1
+        with:
+          name: impit-${{ env.IMPIT_VERSION }}-${{ matrix.python }}-manylinux_riscv64
+          path: wheelhouse/*.whl
+          if-no-files-found: error
+
+  publish:
+    name: Publish impit ${{ inputs.version || '0.14.1' }}
+    needs: [setup, build_wheels]
+    permissions:
+      contents: write
+      pull-requests: write
+    uses: $/.github/workflows/_publish-wheel.yml
+    with:
+      artifact-pattern: impit-${{ inputs.version || '0.14.1' }}-*-manylinux_riscv64

patches/impit/0.14.1/0001-impit-python-Cargo.toml-drop-pyo3-auto-initialize.patch

@@ -0,0 +1,41 @@
+From 4d8ff5017201b92ef9fdfb62cbec05ca448e4f1c Mon Sep 17 00:00:00 2001
+From: Ludovic Henry <git@ludovic.dev>
+Date: Tue, 8 Sep 2026 17:13:42 +0200
+Subject: [PATCH] impit-python/Cargo.toml: drop pyo3's auto-initialize feature
+
+pyo3-build-config's build script hard-errors when auto-initialize is
+enabled against a Python installation that only supports static
+embedding: 'The auto-initialize feature is enabled, but your python
+installation only supports embedding the Python interpreter
+statically.' manylinux_2_39_riscv64's bundled CPythons are built this
+way, so every interpreter leg fails at the pyo3 build step before
+compiling a single impit source file.
+
+auto-initialize only matters for embedding a Python interpreter in a
+Rust binary (or cargo test); impit-python builds a cdylib extension
+module loaded into an already-running interpreter, which never calls
+it, and pyo3-async-runtimes' own pyo3 dependency (version = "0.29",
+no features) does not request it either. Dropping the feature changes
+no runtime behaviour and clears the build error.
+
+Upstream-Status: Inappropriate [manylinux_2_39_riscv64-specific: its CPython builds lack a shared libpython, unlike upstream's own maturin-action manylinux images, which build the same Cargo.toml with this feature enabled without issue]
+---
+ impit-python/Cargo.toml | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/impit-python/Cargo.toml b/impit-python/Cargo.toml
+index bf15c00..91c679b 100644
+--- a/impit-python/Cargo.toml
++++ b/impit-python/Cargo.toml
+@@ -15,7 +15,7 @@ h2 = "0.4.7"
+ reqwest = "0.13.1"
+ tokio-stream = "0.1.17"
+ bytes = "1.9.0"
+-pyo3 = { version = "0.29", features = ["extension-module", "auto-initialize", "either"] }
++pyo3 = { version = "0.29", features = ["extension-module", "either"] }
+ pyo3-async-runtimes = { version = "0.29", features = ["attributes", "async-std-runtime", "tokio-runtime"] }
+ urlencoding = "2.1.3"
+ encoding = "0.2.33"
+-- 
+2.50.1 (Apple Git-155)
+