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Why Pixi?#

Pixi is a fast, modern, and reproducible package management tool for developers of all backgrounds.

🔄 Reproducibility

Isolated, easily recreated environments with lockfiles built-in
🛠️ Tasks

Manage complex pipelines effortlessly.
🌐 Multi Platform

Works on Linux, macOS, Windows, and more.
🧩 Multi Environment

Compose multiple environments in one manifest.
🐍 Python

Support for pyproject.toml and PyPI through uv.
🌍 Global Tools

Install global tools, safely isolated. Replacing apt, homebrew, winget

Quick Demo#

Project setup is a breeze with Pixi.

pixi init hello-world
cd hello-world
pixi add python
pixi run python -c "print('Hello World!')"

Pixi Demo Pixi Demo

Install your favorite tools with a single command.

pixi global install gh nvim ipython btop ripgrep

Pixi Global Demo Pixi Global Demo

What is the difference with Pixi?#

Builtin Core Features Pixi Conda Pip Poetry uv
Installs Python ✅ ✅ ❌ ❌ ✅
Supports Multiple Languages ✅ ✅ ❌ ❌ ❌
Lockfiles ✅ ❌ ❌ ✅ ✅
Task runner ✅ ❌ ❌ ❌ ❌
Project Management ✅ ❌ ❌ ✅ ✅

Available Software#

Pixi defaults to the biggest Conda package repository, conda-forge, which contains over 30,000 packages.

And browse the thousands more on prefix.dev, or host your own channels

Installation#

To install pixi, run:

curl -fsSL https://pixi.sh/install.sh | sh

Download installer

Or run:

powershell -ExecutionPolicy ByPass -c "irm -useb https://pixi.sh/install.ps1 | iex"

Now restart your terminal or shell!

The installation needs to become effective by restarting your terminal or sourcing your shell.

Don't trust our link? Check the script!

You can check the installation sh script: download and the ps1: download. The scripts are open source and available on GitHub.

See all installation options →

Getting Started#

  1. Initialize a workspace: 
    pixi init hello-world
cd hello-world
  2. Add dependencies: 
    pixi add cowpy python
  3. Create your script:
    hello.py
    from cowpy.cow import Cowacter

message = Cowacter().milk("Hello Pixi fans!")
print(message)
  4. Add a task: 
    pixi task add start python hello.py
  5. Run the task: 
    pixi run start

    ✨ Pixi task (start): python hello.py
 __________________
 < Hello Pixi fans! >
 ------------------
      \   ^__^
       \  (oo)\_______
          (__)\       )\/\
            ||----w |
            ||     ||
  6. Entry the environment shell: 
    pixi shell
python hello.py
exit

More details on how to use Pixi with Python can be found in the Python tutorial.

  1. Initialize a workspace: pixi init pixi-rust cd pixi-rust
  2. Add dependencies: 
    pixi add rust
  3. Create your project: 
    pixi run cargo init
  4. Add a task: 
    pixi task add start cargo run
  5. Run the task: 
    pixi run start

    ✨ Pixi task (start): cargo run
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.02s
     Running `target/debug/pixi-rust`
Hello, world!

This is more of an example to show off how easy it is to use Pixi with Rust. Not a recommended way to build Rust projects. More details on how to use Pixi with Rust can be found in the Rust tutorial.

  1. Initialize a workspace: 
    pixi init pixi-node
cd pixi-node
  2. Add dependencies: 
    pixi add nodejs
  3. Create your script:
    hello.js
    console.log("Hello Pixi fans!");
  4. Add a task: 
    pixi task add start "node hello.js"
  5. Run the task: 
    pixi run start

    ✨ Pixi task (start): node hello.js
Hello Pixi fans!
  1. Initialize a workspace: 
    pixi init pixi-ros2 -c https://prefix.dev/conda-forge -c "https://prefix.dev/robostack-humble"
cd pixi-ros2

  2. Add dependencies: 

    pixi add ros-humble-desktop

    This might take a minute

    Depending on your internet connection, this will take a while to install, as it will download the entire ROS2 desktop package.

  3. Start Rviz 

    pixi run rviz2

More details on how to use Pixi with ROS2 can be found in the ROS2 tutorial.

  1. Install all your favorite tools with a single command: 
    pixi global install terraform ansible k9s make
  2. Use them everywhere: 
    ansible --version
terraform --version
k9s version
make --version

What Developers Say#

"Pixi is my tool of choice for Python environment management. It has significantly reduced boilerplate by offering seamless support for both PyPI and conda-forge indexes - a critical requirement in my workflow."

Guillaume Lemaitre – scikit-learn

"I can’t stress enough how much I love using Pixi global as a package manager for my daily CLI tools. With the global manifest, even sharing my setup across machines is trivial!"

Matthew Feickert – University of Wisconsin–Madison

"We are changing how we manage ROS dependencies on Windows. We will be using Pixi to install and manage dependencies from conda. I'm pretty excited about how much easier it will be for users going forward."

Michael Carroll – Project Lead ROS
  • GitHub: Pixi source code, feel free to leave a star!
  • Discord: Join our community and ask questions.
  • Prefix.dev: The company behind Pixi, building the future of package management.
  • conda-forge: Community-driven collection of recipes for the conda package manager.
  • Rattler: Everything conda but built in Rust. Backend of Pixi.
  • rattler-build: A blazing fast build system for conda packages.