I'll plug some work I've been doing to (attempt to) enable cross compilation of Python wheels. I put together a small example [1] that builds the zstandard wheel, and can build macos wheels on linux and linux wheels on macos using zig cc.

macos wheels must still be adhoc signed (codesign) and binary patched (install_name_tool), so I re-implemented those functions in Python [2].

[1] https://github.com/jvolkman/bazel-pycross-zstandard-example

[2] https://github.com/jvolkman/repairwheel/tree/main/src/repair...