ci: add riscv64 wheel build via native RISE runner

[gounthar]

Internal benchmark PR — targeting the fork to get real build times on ubuntu-24.04-riscv before proposing this upstream to jcrist#987.

Upstream does not have the RISE runners app installed yet, so CI numbers need to come from here first.

Summary by CodeRabbit

• Chores
  • CI updated to support building and distributing Python wheels for the RISC‑V (riscv64) architecture.
  • Added a dedicated, manually-triggerable workflow to produce and upload riscv64 wheel artifacts for benchmarking and distribution.

[gemini-code-assist]

Note

Gemini is unable to generate a review for this pull request due to the file types involved not being currently supported.

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: c57e9aa2-0ca9-4e3d-8316-a6c2629234ec

📥 Commits

Reviewing files that changed from the base of the PR and between 49fe4a1 and fa85a57.

📒 Files selected for processing (1)

• .github/workflows/benchmark-riscv64.yml

---

📝 Walkthrough

Walkthrough

Added RISC-V CI support: build-wheels workflow gains an ubuntu-24.04-riscv matrix entry and conditional RISC-V build step; a new benchmark-riscv64.yml workflow provides a manual sdist → riscv64 wheel build pipeline with artifact upload.

Changes

Cohort / File(s)	Summary
Build Wheels Workflow ​.github/workflows/build-wheels.yml	Added ubuntu-24.04-riscv matrix entry (archs: riscv64). Introduced a conditional step that installs cibuildwheel==3.2.1 and runs python3 -m cibuildwheel for riscv64; adjusted the existing Build & Test Wheels step to run only when matrix.archs != 'riscv64'.
RISC-V Benchmark Workflow ​.github/workflows/benchmark-riscv64.yml	New workflow (workflow_dispatch) with two jobs: sdist (builds sdist and uploads artifact-sdist) and build-riscv64 (downloads sdist on ubuntu-24.04-riscv, installs cibuildwheel==3.2.1, builds riscv64 wheels into wheelhouse, uploads artifact-wheels-riscv64).

Sequence Diagram(s)

mermaid
sequenceDiagram
participant Dev as "Developer (triggers workflow)"
participant GH as "GitHub Actions"
participant Runner as "ubuntu-24.04-riscv Runner"
participant CIBW as "cibuildwheel"
participant Art as "Artifact Storage"
Dev->>GH: workflow_dispatch (benchmark-riscv64)
GH->>Runner: run sdist job (uv build --sdist)
Runner->>Art: upload artifact-sdist
GH->>Runner: run build-riscv64 job (download sdist)
Runner->>CIBW: install & run python3 -m cibuildwheel (CIBW_ARCHS=riscv64)
CIBW->>Runner: produce wheelhouse/*.whl
Runner->>Art: upload artifact-wheels-riscv64

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Poem

🐰 I hopped into CI with a curious twitch,
Built sdists, then wheels for a riscv64 switch,
Artifacts tucked in a neat little stash,
RISC‑V wheels rolling with a soft little dash! 🚀

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly describes the main change: adding riscv64 wheel builds to CI using native RISE runner infrastructure.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feat/riscv64-wheels

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}