Pixi Package and Environment Manager

Pixi is a tool for managing software packages and environments. It is designed to be fast, reproducible, and easy to use across different operating systems (Windows, macOS, and Linux).

For users with minimal experience in Python dependency management, Pixi simplifies many complex tasks into a single tool.

This notebook is from the 16-Apr-2026 group discussion in which Doug introduced Pixi.

Contents:

• Why Pixi?
• Installing Pixi
  • On macOS and Linux including the Alliance machines:
  • On Windows (PowerShell):
  • Autocompletion
• Basic Usage
  • Installing an Environment
  • Adding Packages
  • Running Commands
  • Using the Pixi Shell
• Pixi Details
• Migrating to Pixi-Powered SalishSeaCmd
  • Install Pixi
  • Update SalishSeaCmd
  • Create the SalishSeaCmd Environment
  • Use pixi run salishsea run...
  • Cleanup
• Migrating Your Analysis Repository to Pixi
  • Initialize Your Repository as a Pixi Workspace
  • Test a Notebook
  • Clean Up the Default Environment
  • Commit and Push
  • Import Any Other Environments
  • Maybe Remove Conda
• Importing a Conda Environment Into a Pixi Workspace
• Adding a New Pixi Environment