When running project with uv run, homebrew-installed dynamic libraries on MacOS are not found.

[tcwalther]

I'm using torchaudio to load audio files, which under the hood uses ffmpeg. On MacOS with Apple Silicon, ffmpeg's libraries will be installed to /opt/homebrew/lib.

When I run my script regularly with Python's good old venv and python scripts/worker.py, torchaudio successfully finds ffmpeg in /opt/homebrew/lib. When I run my script with uv run worker, whereas worker is a defined script in pyproject.toml, torchaudio can't find ffmpeg and says that the search paths are:

• $PROJECT_DIR/.venv/lib/python3.10/site-packages/torch/lib/libavutil.56.dylib
• /usr/lib/libavutil.56.dylib
• libavutil.56.dylib
• /usr/local/lib/libavutil.56.dylib
• /usr/lib/libavutil.56.dylib

(not sure why /usr/lib is duplicated; I'm just copying the output)

The file, however, is located at /opt/homebrew/lib/libavutil.56.dylib. Why is the dyld search path different when running my script via uv run?