Publish and verify Pyodide wheels from GitHub Releases

[Alek99]

What changed

• build and runtime-test the Pyodide wheel as before
• publish the verified wheel as a versioned GitHub Release asset instead of sending its unsupported platform tag to PyPI
• install that exact public HTTPS asset in Pyodide 0.29.4 and run the native min_max kernel before the release job passes
• keep the Pyodide build release-blocking for both PyPI and GitHub Release publication
• enable PyPI skip-existing so a manual non-dry run can complete the partially published 0.0.1 release
• add workflow invariants and URL-mode smoke coverage

Why

PyPI rejected xy-0.0.1-py3-none-pyodide_2025_0_wasm32.whl because Warehouse does not accept the pyodide_2025_0_wasm32 platform tag. Pyodide supports installing binary WASM wheels directly from HTTPS URLs, so GitHub Releases is the supported distribution channel for this artifact.

Installation

import micropip

await micropip.install(
    "https://github.com/reflex-dev/xy/releases/download/v0.0.1/"
    "xy-0.0.1-py3-none-pyodide_2025_0_wasm32.whl"
)

Recovery for v0.0.1

After this merges, run the release workflow manually with dry_run=false. It will:

1. skip the 0.0.1 files PyPI already accepted
2. upload the remaining PyPI-compatible artifacts
3. attach the Pyodide wheel to the existing v0.0.1 GitHub Release
4. reinstall the public release asset and execute the native backend smoke

Validation

• release workflow invariant verifier passes
• workflow invariant/unit tests: 40 passed
• Ruff passes
• release workflow parses as YAML
• actionlint passes
• downloaded the exact dist-pyodide artifact from release run 29553527377, served it over HTTP, installed it with Pyodide 0.29.4, and executed the native kernel: backend=native abi=35 min_max=(1,3)

Pyodide documents binary WASM wheel installation from custom HTTPS URLs: https://pyodide.org/en/latest/usage/loading-packages.html#installing-wheels-from-arbitrary-urls

[codspeed-hq]

Merging this PR will not alter performance

✅ 94 untouched benchmarks
⏩ 1 skipped benchmark¹

---

_{Comparing agent/exclude-pyodide-from-pypi (27b38ef) with main (824d037)}

Footnotes

1. 1 benchmark was skipped, so the baseline result was used instead. If it was deleted from the codebase, click here and archive it to remove it from the performance reports. ↩