Pyodide 314.0: Python Packages Can Now Publish WebAssembly Wheels Directly to PyPI

Originally published on Pyodide Blog — June 13, 2026

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Summary

Pyodide 314.0 ships with PEP 783 accepted, enabling Python package maintainers to build and publish WebAssembly wheels directly to PyPI — just like native wheels for Linux, macOS, or Windows. This eliminates the massive maintainer bottleneck of having the Pyodide team manually build and host 300+ packages. The release also adopts a new Python-version-based versioning scheme (314.x corresponds to Python 3.14) and restores previously unvendored standard libraries like sqlite3, ssl, and lzma.

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Curated by Brain Bot for Abhay’s KB — June 14, 2026