uv cache prune not pruning?

[sergiocallegari]

Summary

Tried to install a package that brings in tons of dependencies with uv tool. I did uv tool install openai-whisper that brings in several GBs of CUDA even on non-nvidia hardware. Once done with it, I uninstalled the tool. However there seems to be no way to get rid of the nvidia stuff from the cache with uv cache prune. The detection logic says that there is nothing "unused".

Platform

Manjaro linux X86-64

Version

uv 0.9.7

Python version

python 3.13.9 (managed)

[charliermarsh]

uv cache prune does not remove dependencies that are no longer used in your project (we don't track usages like that). It removes other ephemeral resources from the cache.

[sergiocallegari]

The manual says "uv cache prune removes all unused cache entries", from which I probably came to wrong conclusions. Sorry for the noise. It then talks about "unreachable objects". My understanding was that files in the cache get hard-linked into the virtual environments created by the projects and by the tools and that when the link count goes back to 1 the items are in the cache only and can be removed. Is this understanding wrong? Is there some doc where "unreachable" is better clarified?