Summary

I'm pretty sure this is a new-ish problem.

So, I develop on an ARM Mac with a Rosetta system and use Python both in x86 and ARM mode.

Recently-ish, I've started to have the problem that I have to clear the cache (uv cache clean python-ldap) when recreating a project virtualenv (rm -rf .venv; uv sync), for packages that need to be compiled.

python-ldap==3.4.4 does not ship any wheels, so it has to be compiled for every architecture and every Python version, otherwise you get an opaque:

.venv/lib/python3.13/site-packages/ldap/__init__.py:34: in <module>
    import _ldap
E   ImportError: dynamic module does not define module export function (PyInit__ldap)

I guess the problem is that cached self-built wheels are shared across architectures?

Platform

Darwin 24.5.0 arm64

Version

uv 0.7.12 (dc3fd46 2025-06-06)

Python version

3.13.5