software catalog

content/software/uv.md

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+---
+title: "uv"
+category: "Languages and runtimes"
+tagline: "A fast Python package and project manager that can stand in for pip, venv and pipx."
+source: "pacman"
+package: "uv"
+command: "uv"
+website: "https://docs.astral.sh/uv/"
+code: "https://github.com/astral-sh/uv"
+---
+
+## What it is
+
+uv is a Python package installer and project manager written in Rust by Astral. It does the jobs of pip, virtualenv, pipx and pip-tools with one command, much faster: it creates environments, resolves and locks dependencies, installs Python versions and runs tools.
+
+## Why it's here
+
+- **Fast.** Installs and dependency resolution take a fraction of the time pip needs.
+- **Projects made simple.** `uv init`, `uv add` and `uv run` manage a project's environment and lock file for you.
+- **Run tools without installing them.** `uvx ruff check` runs a tool in a throwaway environment.
+
+## On CoreDesktop
+
+uv is installed from pacman. CoreDesktop also needs it for upgrades: pipx apps installed with pipx's uv backend, as Hermes Agent installs them, need uv to upgrade. `update` keeps uv current with the rest of the pacman packages.
+
+```
+uv run script.py
+```