Summary & Key Takeaways ​

• Pyodide now supports publishing WebAssembly (WASM) wheels directly to PyPI.
• This eliminates a previous bottleneck where Pyodide maintainers manually hosted over 300 packages.
• Package maintainers can now build and publish Pyodide wheels just like native wheels.
• The change is based on PEP 783 and involved a pull request to PyPI itself.
• Simon Willison demonstrates this by packaging a Luau WebAssembly project.
• The luau-wasm package is now available on PyPI, installable via micropip.

Our Commentary ​

This is a massive quality-of-life improvement for anyone working with Pyodide. We've heard the frustrations about package distribution for ages, and seeing this bottleneck finally cleared is genuinely exciting. It's a huge win for developer experience. Also, the mention of GPT-5.5 xhigh is a subtle nod to the future of dev workflows; I wonder how many of us will be using models like that for packaging tasks soon.