dumb-init: add build-dumb-init.yml for riscv64 wheels

.github/workflows/build-dumb-init.yml

@@ -0,0 +1,92 @@
+# SPDX-FileCopyrightText: 2026 The RISE Project
+# SPDX-License-Identifier: MIT
+---
+# This workflow is based on: https://github.com/Yelp/dumb-init/blob/v1.2.5/Makefile python-dists-% target
+name: Build dumb-init wheels (riscv64)
+
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: 'dumb-init version to build (PyPI version, e.g. 1.2.5.post1)'
+        required: true
+        default: '1.2.5.post1'
+  pull_request:
+    paths:
+      - '.github/workflows/build-dumb-init.yml'
+      - 'patches/dumb-init/**'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ inputs.version || '1.2.5.post1' }}-${{ 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 1.2.5.post1 there.
+  DUMB_INIT_VERSION: ${{ inputs.version || '1.2.5.post1' }}
+  MANYLINUX_RISCV64_IMAGE: quay.io/pypa/manylinux_2_39_riscv64
+
+jobs:
+  setup:
+    uses: $/.github/workflows/_setup.yml
+
+  build_wheel:
+    needs: [setup]
+    name: Build dumb-init ${{ inputs.version || '1.2.5.post1' }} py2.py3-none-manylinux_riscv64
+    runs-on: ubuntu-24.04-riscv
+    timeout-minutes: 30
+
+    steps:
+      # The v1.2.5 tag's setup.py has no .post1 suffix; 0002-*.patch adds it to
+      # match the sdist Yelp actually uploaded to PyPI as 1.2.5.post1.
+      - name: Determine upstream git tag
+        run: echo "DUMB_INIT_TAG=v${DUMB_INIT_VERSION%.post*}" >> "$GITHUB_ENV"
+
+      - name: Checkout dumb-init ${{ env.DUMB_INIT_TAG }}
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7.0.1
+        with:
+          repository: Yelp/dumb-init
+          ref: ${{ env.DUMB_INIT_TAG }}
+          persist-credentials: false
+
+      - name: Checkout python-wheels
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7.0.1
+        with:
+          path: python-wheels
+          persist-credentials: false
+
+      - name: Patch dumb-init source
+        run: git apply python-wheels/patches/dumb-init/${{ env.DUMB_INIT_VERSION }}/*.patch
+
+      - name: Build wheel
+        uses: pypa/cibuildwheel@1828c10ab37f080699c7b81cea34097c684a7074  # v4.2.0
+        with:
+          output-dir: wheelhouse/
+          # setup.py's own bdist_wheel override forces the py2.py3-none tag, so one build serves every interpreter.
+          only: cp312-manylinux_riscv64
+        env:
+          CIBW_MANYLINUX_RISCV64_IMAGE: ${{ env.MANYLINUX_RISCV64_IMAGE }}
+          # pytest-timeout<2.0.0 (upstream's own pin) imports distutils.version.LooseVersion,
+          # which cp312+ dropped entirely (PEP 632); a modern pytest-timeout has no such
+          # dependency, so let pip pick the latest instead of upstream's stale Python-2-era cap.
+          CIBW_TEST_REQUIRES: pytest pytest-timeout
+          CIBW_TEST_SOURCES: tests testing VERSION pytest.ini
+          CIBW_TEST_COMMAND: python -m pytest tests -vv
+
+      - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a  # v7.0.1
+        with:
+          name: dumb-init-${{ env.DUMB_INIT_VERSION }}-py2.py3-none-manylinux_riscv64
+          path: wheelhouse/*.whl
+          if-no-files-found: error
+
+  publish:
+    name: Publish dumb-init ${{ inputs.version || '1.2.5.post1' }}
+    needs: [setup, build_wheel]
+    permissions:
+      contents: write
+      pull-requests: write
+    uses: $/.github/workflows/_publish-wheel.yml
+    with:
+      artifact-pattern: dumb-init-${{ inputs.version || '1.2.5.post1' }}-*-manylinux_riscv64

patches/dumb-init/1.2.5.post1/0001-testing-eliminate-usage-of-pylib.patch

@@ -0,0 +1,77 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Ludovic Henry <git@ludovic.dev>
+Date: Sun, 6 Sep 2026 00:00:00 +0200
+Subject: [PATCH] testing: eliminate usage of pylib
+
+v1.2.5's testing/__init__.py imports `py._path.local.LocalPath` from the
+standalone py package, which recent pytest releases no longer pull in
+as a dependency, so `pip install pytest` alone leaves `import testing`
+failing with ModuleNotFoundError: No module named 'py'. Backports
+upstream's later fixes, replacing it with the os/os.path calls already
+imported by the module and tolerating the "0" process state GitHub's
+own QEMU runners can report.
+
+Upstream-Status: Backport [https://github.com/Yelp/dumb-init/commit/2c39101849abb835e9f368e3cf5c9570362a9589]
+---
+ testing/__init__.py | 25 +++++++++++++++++--------
+ 1 file changed, 17 insertions(+), 8 deletions(-)
+
+diff --git a/testing/__init__.py b/testing/__init__.py
+index 665df65..e860e09 100644
+--- a/testing/__init__.py
++++ b/testing/__init__.py
+@@ -8,9 +8,6 @@ from contextlib import contextmanager
+ from subprocess import PIPE
+ from subprocess import Popen
+
+-from py._path.local import LocalPath
+-
+-
+ # these signals cause dumb-init to suspend itself
+ SUSPEND_SIGNALS = frozenset([
+     signal.SIGTSTP,
+@@ -49,14 +46,24 @@ def print_signals(args=()):
+ def child_pids(pid):
+     """Return a list of direct child PIDs for the given PID."""
+     children = set()
+-    for p in LocalPath('/proc').listdir():
++    for p in os.listdir('/proc'):
+         try:
+-            stat = open(p.join('stat').strpath).read()
+-            m = re.match(r'^\d+ \(.+?\) [a-zA-Z] (\d+) ', stat)
++            with open(os.path.join('/proc', p, 'stat')) as f:
++                stat = f.read()
++            m = re.match(
++                r'^\d+ \(.+?\) '
++                # This field, state, is normally a single letter, but can be
++                # "0" if there are some unusual security settings that prevent
++                # reading the process state (happens under GitHub Actions with
++                # QEMU for some reason).
++                '[0a-zA-Z] '
++                r'(\d+) ',
++                stat,
++            )
+             assert m, stat
+             ppid = int(m.group(1))
+             if ppid == pid:
+-                children.add(int(p.basename))
++                children.add(int(p))
+         except OSError:
+             # Happens when the process exits after listing it, or between
+             # opening stat and reading it.
+@@ -76,12 +83,13 @@ def pid_tree(pid):
+
+ def is_alive(pid):
+     """Return whether a process is running with the given PID."""
+-    return LocalPath('/proc').join(str(pid)).isdir()
++    return os.path.isdir(os.path.join('/proc', str(pid)))
+
+
+ def process_state(pid):
+     """Return a process' state, such as "stopped" or "running"."""
+-    status = LocalPath('/proc').join(str(pid), 'status').read()
++    with open(os.path.join('/proc', str(pid), 'status')) as f:
++        status = f.read()
+     m = re.search(r'^State:\s+[A-Z] \(([a-z]+)\)$', status, re.MULTILINE)
+     return m.group(1)
+

patches/dumb-init/1.2.5.post1/0002-setup.py-version-1.2.5.post1-and-drop-testing-package.patch

@@ -0,0 +1,41 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Ludovic Henry <git@ludovic.dev>
+Date: Sun, 6 Sep 2026 00:00:00 +0200
+Subject: [PATCH] setup.py: version 1.2.5.post1, drop the dev-only testing/
+ package
+
+The v1.2.5 tag's setup.py has no `packages=` argument and computes
+`version` from the bare VERSION file, but the actual dumb-init-1.2.5.post1
+sdist Yelp uploaded to PyPI carries a setup.py with `version=... + ".post1"`
+and an explicit `packages=[]` -- a metadata fix applied to the release
+artifact and never pushed back to this tag (there is no newer tag on
+GitHub). Without this, `pip download dumb-init==1.2.5.post1` and a build
+from this checkout produce different version strings, and the checkout's
+build also ships the tests/-only `testing` helper package inside the
+wheel (visible: `dumb_init-1.2.5.data/purelib/testing/`), which the real
+PyPI wheel excludes.
+
+Upstream-Status: Inappropriate [Yelp's own PyPI release process applied this to the uploaded sdist but never committed or tagged it in git; there is no upstream ref to submit against]
+---
+ setup.py | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/setup.py b/setup.py
+index 0ec2f18..dd9e59b 100644
+--- a/setup.py
++++ b/setup.py
+@@ -121,10 +121,11 @@ class build_cexe(Command):
+ setup(
+     name='dumb-init',
+     description='Simple wrapper script which proxies signals to a child',
+-    version=open('VERSION').read().strip(),
++    version=open('VERSION').read().strip() + ".post1",
+     author='Yelp',
+     url='https://github.com/Yelp/dumb-init/',
+     platforms='linux',
++    packages=[],
+     c_executables=[Extension('dumb-init', ['dumb-init.c'])],
+     cmdclass={
+         'bdist_wheel': bdist_wheel,
+--
+2.43.0