uv/docs/introduction.md

An extremely fast Python package installer and resolver, written in Rust. Designed as a drop-in replacement for common pip and pip-tools workflows.

Installing the Trio dependencies with a warm cache.

Highlights

• ⚖️ Drop-in replacement for common pip, pip-tools, and virtualenv commands.
• ⚡️ 10-100x faster than pip and pip-tools (pip-compile and pip-sync).
• 💾 Disk-space efficient, with a global cache for dependency deduplication.
• 🐍 Installable via curl, pip, pipx, etc. uv is a static binary that can be installed without Rust or Python.
• 🧪 Tested at-scale against the top 10,000 PyPI packages.
• 🖥️ Support for macOS, Linux, and Windows.
• 🧰 Advanced features such as dependency version overrides, multi-platform resolutions, reproducible resolutions, alternative resolution strategies, and more.
• ⁉️ Best-in-class error messages with a conflict-tracking resolver.
• 🤝 Support for a wide range of advanced pip features, including editable installs, Git dependencies, direct URL dependencies, local dependencies, constraints, source distributions, HTML and JSON indexes, and more.

uv is backed by Astral, the creators of Ruff.

Getting started

Install uv with our official standalone installer:

# On macOS and Linux.
curl -LsSf https://astral.sh/uv/install.sh | sh

# On Windows.
powershell -c "irm https://astral.sh/uv/install.ps1 | iex"

Or, see our installation guide for more options.

Then, check out our documentation creating an environment.

Features

uv supports features familiar from pip and pip-tools:

• Managing Python environments
• Installing packages
• Inspecting packages
• Locking environments

uv also supports many advanced features:

• Multi-platform resolution
• Dependency overrides
• Reproducible resolutions
• Resolution strategies for multiple indexes
• Dependency caching