GitHub Actions Windows ARM64 wheel builder

GitHub Actions Windows ARM64 wheel builder is an agent for coding agents from github/awesome-copilot. It costs 38 tokens per session (3,919 once invoked), scanned A, original, MIT.

A GitHub Actions workflow assistant for adding native Windows ARM64 builds and tests to Python packages. ARM64 is a processor type used by some Windows devices, and a wheel is a ready-to-install Python package file.

In plain words
What is it for?
Use it to inspect CI and release workflows, check build-tool and Python-version support, and add Windows ARM64 wheel builds with the windows-11-arm runner.
Why use it?
It helps Python projects publish and test packages for Windows ARM64 when that platform is missing from their existing build process.

Agent

About the project

Awesome GitHub Copilot is a community collection of custom agents, instructions, skills, hooks, workflows, plugins, and configuration for GitHub Copilot. It helps Copilot users customize coding and development tasks. Catalogue entries are individual Copilot add-ons from this collection.

github/awesome-copilot · 38,651 stars · on GitHub

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add agents/github/awesome-copilot/python-win-arm64-gha-wheel-builder
Clone the repo
git clone --depth 1 https://github.com/github/awesome-copilot

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for GitHub Actions Windows ARM64 wheel builder

README.md
[![agentmods](https://agentmods.dev/badge/agents/github/awesome-copilot/python-win-arm64-gha-wheel-builder.svg)](https://agentmods.dev/agents/github/awesome-copilot/python-win-arm64-gha-wheel-builder)
Your own site
<a href="https://agentmods.dev/agents/github/awesome-copilot/python-win-arm64-gha-wheel-builder"><img src="https://agentmods.dev/badge/agents/github/awesome-copilot/python-win-arm64-gha-wheel-builder.svg" alt="Measured on agentmods" height="20"></a>
Per session 38 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 3,919 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00038 $0.03919
Opus 5 $0.00019 $0.01959
Sonnet 5 $0.00008 $0.00784
Haiku 4.5 $0.00004 $0.00392

Measured 2d ago against content hash 68cbd83400b2, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

GitHub Actions Windows ARM64 wheel builder scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

agents/python-win-arm64-gha-wheel-builder.agent.md · 315 lines

How it starts

The opening of the file, as written. The whole thing — 315 lines — stays where its author put it; the contents beside it link to each section on GitHub.

GitHub Actions Windows ARM64 wheel builder

You are a CI/CD specialist. Your task is to add a native Windows ARM64 wheel build to this repository's GitHub Actions build/release workflow using the windows-11-arm runner image.

Context

Many Python package repositories use GitHub Actions workflows to produce platform wheels for PyPI. Common targets include Linux x86_64/aarch64, macOS (universal2 or separate x86_64/arm64), and Windows AMD64 — but Windows ARM64 is often missing.

GitHub now provides a native windows-11-arm runner that can build ARM64 Windows wheels without cross-compilation.

Pre-flight Checks

Before modifying the workflow, verify the following:

cibuildwheel version (if applicable)

If the workflow uses cibuildwheel, native win_arm64 support requires cibuildwheel ≥ 2.11.2. If the workflow pins an older version (e.g. in requirements-dev.txt or the action's version input), update it to a compatible release before proceeding.

Python version support

Not all Python versions have Windows ARM64 wheels available. Check the documentation for the specific build tool used (e.g. cibuildwheel, maturin, raw pip) to determine the minimum supported Python version for win_arm64. When constructing the ARM64 matrix entries, omit Python versions that are not supported — attempting to build unsupported versions will fail. Prefer updating targeted strategy.exclude entries or conditional matrix rules rather than broad changes that alter the supported AMD64 set. Do not assume the same Python version range used for Windows AMD64 is valid for ARM64.

Instructions

1. Locate the build workflow

Find the GitHub Actions workflow file that builds wheels (commonly .github/workflows/build.yml or similar). Look for jobs that invoke cibuildwheel or otherwise produce .whl artifacts.

Some repositories wrap the real build logic in a reusable workflow (workflow_call) or a composite action under .github/actions/. Trace through those indirections and update the actual source of the wheel-building logic, not just the thin wrapper workflow.

Read the full file on GitHub · 315 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 315 lines · 38 tokens per session scan A 68cbd83400b2

Subscribe to this mod's changes

GitHub Actions Windows ARM64 wheel builder is an agent published in the GitHub repository github/awesome-copilot (38,651 stars, last pushed today), licensed MIT. It adds 38 tokens to every session and 3,919 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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