To install a Python package for a specific CPU architecture using uv (the Python package installer by Astral), you can use the --platform flag. This allows you to specify the target platform and architecture (e.g., linux-arm64, win-32, macos-arm64).

Example Usage

1. Install for a Specific Platform

uv pip install --platform linux-arm64 package_name

Replace linux-arm64 with your desired platform (e.g., win-amd64, macos-x86_64, macos-arm64).

2. Install for Multiple Platforms

If you need to install for multiple platforms, you can use a loop or script:

uv pip install --platform linux-arm64 package_name
uv pip install --platform win-amd64 package_name

3. Install from a Specific Wheel

You can also directly install a wheel file for the desired platform:

uv pip install package_name --platform linux-arm64 --find-links https://example.com/wheels/

Key Points

• Supported Platforms: Use linux-arm64, linux-x86_64, win-amd64, win-32, macos-x86_64, macos-arm64, etc.
• Pre-built Wheels: Ensure the package provides wheels for your target platform. If not, you may need to build from source.
• Cross-Platform: If you need to build from source, uv will handle it automatically if the platform is supported.

Troubleshooting

• If you get an error about missing wheels, check if the package supports your platform.
• Use uv pip download --platform linux-arm64 package_name to download the wheel for inspection.