workflows: use uv, add riscv64 builds

[threexc]

Update the workflows and pyproject.toml to use uv, then make use of RISE's Native RISC-V Runners to build ijson for riscv64. This requires enabling them for the repository as a GitHub Application. More info is available here: https://riscv-runners.riseproject.dev/

I tried a test run on my fork. You can review the results here: threexc#1

This is being done on behalf of RISE, using the RISC-V Wheels dashboard to track upstream support for the Python ecosystem.

Summary by Sourcery

Adopt uv across packaging workflows and add riscv64 testing and wheel builds.

New Features:

• Add native RISC-V runner coverage for fast tests and Linux wheel builds.
• Use the RISE package index to support RISC-V build dependencies.

Enhancements:

• Standardize workflow Python setup and package installation on uv.
• Configure cibuildwheel to use uv for build and test environments.

CI:

• Extend scheduled CI and PyPI deployment workflows to test and build riscv64 artifacts.

[sourcery-ai]

Reviewer's Guide

The workflows are migrated to uv for Python setup, dependency installation, sdist creation, and cibuildwheel builds, while adding RISE native riscv64 runners and package-index configuration so RISC-V wheels and tests can be produced alongside existing platforms.

Sequence diagram for uv-based wheel and sdist publishing

sequenceDiagram
    participant Workflow as GitHub Actions
    participant UV as uv
    participant CIBW as cibuildwheel
    participant Index as RISE package index
    participant PyPI as PyPI

    Workflow->>UV: setup-uv
    Workflow->>UV: uv pip install build
    Workflow->>UV: uv build --sdist
    Workflow->>CIBW: build wheels with CIBW_BUILD_FRONTEND
    CIBW->>UV: install build dependencies
    UV->>Index: resolve packages using UV_EXTRA_INDEX_URL
    CIBW-->>Workflow: platform wheels
    Workflow->>PyPI: publish sdist and wheels

Loading

Flow diagram for riscv64 wheel generation

flowchart TD
    Start["Calculate wheel matrix"] --> Runner["ubuntu-24.04-riscv"]
    Runner --> Setup["Set CIBW_ARCHS to riscv64"]
    Setup --> Build["cibuildwheel uses uv frontend"]
    Build --> Env["Pass RISE index environment into Linux container"]
    Env --> Wheel["Upload riscv64 wheel artifact"]

Loading

File-Level Changes

Change	Details	Files
Adds native riscv64 coverage to wheel builds and fast tests.	Defines riscv64 architecture matrices and schedules jobs on the RISE Ubuntu RISC-V runner. Enables the RISE package index and passes its environment into Linux cibuildwheel containers. Keeps RISC-V builds and tests aligned with existing platform coverage.	.github/workflows/deploy-to-pypi.yml .github/workflows/fast-built-and-test.yml pyproject.toml
Standardizes workflow package installation and builds on uv.	Replaces setup-python and pip commands with the pinned setup-uv action and uv pip/uv build commands. Configures cibuildwheel to use its uv build frontend and installs the frontend extra explicitly. Updates cibuildwheel test dependency installation for uv-created environments without pip.	.github/workflows/deploy-to-pypi.yml .github/workflows/fast-built-and-test.yml pyproject.toml
Preserves memory-leak workflow behavior while making pip invocation explicit and configuring the supplemental index.	Uses python3 -m pip for package and test dependency installation. Adds the RISE package index through PIP_EXTRA_INDEX_URL.	.github/workflows/memleak-tests.yml

---

Tips and commands

Interacting with Sourcery

• Trigger a new review: Comment @sourcery-ai review on the pull request.
• Continue discussions: Reply directly to Sourcery's review comments.
• Generate a GitHub issue from a review comment: Ask Sourcery to create an
  issue from a review comment by replying to it. You can also reply to a
  review comment with @sourcery-ai issue to create an issue from it.
• Generate a pull request title: Write @sourcery-ai anywhere in the pull
  request title to generate a title at any time. You can also comment
  @sourcery-ai title on the pull request to (re-)generate the title at any time.
• Generate a pull request summary: Write @sourcery-ai summary anywhere in
  the pull request body to generate a PR summary at any time exactly where you
  want it. You can also comment @sourcery-ai summary on the pull request to
  (re-)generate the summary at any time.
• Generate reviewer's guide: Comment @sourcery-ai guide on the pull
  request to (re-)generate the reviewer's guide at any time.
• Resolve all Sourcery comments: Comment @sourcery-ai resolve on the
  pull request to resolve all Sourcery comments. Useful if you've already
  addressed all the comments and don't want to see them anymore.
• Dismiss all Sourcery reviews: Comment @sourcery-ai dismiss on the pull
  request to dismiss all existing Sourcery reviews. Especially useful if you
  want to start fresh with a new review - don't forget to comment
  @sourcery-ai review to trigger a new review!

Customizing Your Experience

Access your dashboard to:

• Enable or disable review features such as the Sourcery-generated pull request
  summary, the reviewer's guide, and others.
• Change the review language.
• Add, remove or edit custom review instructions.
• Adjust other review settings.

Getting Help

• Contact our support team for questions or feedback.
• Visit our documentation for detailed guides and information.
• Keep in touch with the Sourcery team by following us on X/Twitter, LinkedIn or GitHub.

[sourcery-ai]

Hey - I've found 1 issue

Prompt for AI Agents

Please address the comments from this code review:

## Individual Comments

### Comment 1
<location path=".github/workflows/fast-built-and-test.yml" line_range="33-37" />
<code_context>

-      - uses: actions/setup-python@v7
-        name: Install Python
+      - name: Python ${{ matrix.config.python }}
+        uses: astral-sh/setup-uv@20cfd1bf945f4377ade1205e4dbc17946fc9a30d # v10.0.1
         with:
</code_context>
<issue_to_address>
**issue (bug_risk):** The workflows reference `matrix.config.python`, but the fast-test matrix defines `python_version` directly and the distribution jobs have no matrix at all. Consequently, fast-test setup-uv receives an empty Python version instead of the requested matrix version, and the distribution step labels render without a Python version.

**Suggested fix:** Use `${{ matrix.python_version }}` in the fast-test job and a literal `3.13` (or remove the expression) in the distribution step names.
</issue_to_address>

Sourcery assessment

Needs a human reviewer. 1 finding to address first, and the release and test workflows now silently allow an external package index to win dependency resolution via unsafe-best-match, so a compromised or incorrect package there could execute during builds and potentially be incorporated into published artifacts. Reverting the workflow would not recall any already-published wheels or packages produced under that dependency policy.

Blocking findings: .github/workflows/fast-built-and-test.yml:37

---

Sourcery is free for open source - if you like our reviews please consider sharing them ✨

• X
• Mastodon
• LinkedIn
• Facebook