/uv

name: uv
description: >-
  Checks whether the uv Python package manager is installed and installs it if
  missing. Ensures uv is on PATH. Use when another skill requires uv as a
  prerequisite.

uv (Python Package Manager)

`uv` is a fast Python package manager used by Science Skills to run their Python CLI scripts. Many skills depend on `uv` being installed and on PATH.

Ensure `uv` is available before running any skill that depends on it.

Setup

1. Check if `uv` is already available: `uv --version` (or `& uv --version` in PowerShell). If this succeeds, `uv` is ready — skip the remaining steps. 2. Check whether `uv` is installed at its default location but not on PATH:

• **Unix/macOS**: `"$HOME/.local/bin/uv" --version`
• **Windows (PowerShell)**: `& "$HOME\.local\bin\uv.exe" --version`

If either succeeds, skip to step 4.

3. If uv is not installed do these steps in order:

(a) Tell the user that uv is a tool for creating a consistent and reliable Python environment used for running the Science Skills, and that you need to install it now.

(b) Install `uv`:

• **Unix/macOS**: `curl -LsSf https://astral.sh/uv/install.sh | sh`
• **Windows (PowerShell)**: `powershell -ExecutionPolicy ByPass -c

"irm https://astral.sh/uv/install.ps1 | iex"`

4. Add `uv` to PATH and verify (run as a single command):

• **Unix/macOS**: `export PATH="$HOME/.local/bin:$PATH" && uv --version`
• **Windows (PowerShell)**: `$env:PATH = "$HOME\.local\bin;" + $env:PATH;

uv --version`

After setup, bare `uv` commands should work without repeating the export.