Can you build an emscripten wheel to support pyodide runtime?

[CNSeniorious000]

Background

Pyodide is a wasm build of CPython, which support loading 3rd-party packages with pure-python wheels or emscripten wheels.

Some packages I want to use in pyodide depends on jiter (for example, openai), blocking me from installing them. So it woould be great if you can build an emscripten wheel for pyodide.

Related

• Set jiter as optional dependency to support pyodide (~3 lines diff) openai/openai-python#1782
• can I use "micropip" to install "langchain"?? if not, I request the python package "langchain". pyodide/pyodide#3711

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Personally I am not good at rust or emscripten so I may not be able to help, but here are some docs about how to build one in pyodide. As pydantic had a pyodide wheel since a long time ago, I think it won't be difficult to build one for jiter.

https://pyodide.org/en/stable/development/new-packages.html#rust-pyo3-packages

[narumichiaki]

py.cafe explains how to build jiter into wheel, and and this method worked fine for me. To use jiter's wheel with Pyodide, it seems that the version of Emscripten used to compile jiter must be the same as the one used to compile Pyodide.
https://py.cafe/docs/howto/build
I will also share the Dockerfile I used to compile it.
https://gist.github.com/narumichiaki/0cb32c5b6db64493d19066a9ca3aeccb