Python Dependency Manager Companion

--- title: Home template: home.html ---  ## Why Pixi? Pixi is a **fast, modern, and reproducible** package management tool for developers of all backgrounds. <div class="feature-grid"> <a href="workspace/lockfile"> <div class="feature-card"> <strong>🔄 Reproducibility</strong> <p>Isolated, easily recreated environments with lockfiles built-in</p> </div> </a> <a href="workspace/advanced_tasks/"> <div class="feature-card"> <strong>🛠️ Tasks</strong> <p>Manage complex pipelines effortlessly.</p> </div> </a> <a href="workspace/multi_platform_configuration/"> <div class="feature-card"> <strong>🌐 Multi Platform</strong> <p>Works on Linux, macOS, Windows, and more.</p> </div> </a> <a href="workspace/multi_environment/"> <div class="feature-card"> <strong>🧩 Multi Environment</strong> <p>Compose multiple environments in one manifest.</p> </div> </a> <a href="python/tutorial/"> <div class="feature-card"> <strong>🐍 Python</strong> <p>Support for <code>pyproject.toml</code> and PyPI through uv.</p> </div> </a> <a href="global_tools/introduction/"> <div class="feature-card"> <strong>🌍 Global Tools</strong> <p>Install global tools, safely isolated. Replacing <code>apt</code>, <code>homebrew</code>, <code>winget</code></p> </div> </a> </div> --- ## Quick Demo Project setup is a breeze with Pixi. ```shell pixi init hello-world cd hello-world pixi add python pixi run python -c 'print("Hello World!")' ```   Install your favorite tools with a single command. ```shell pixi global install gh nvim ipython btop ripgrep ```   --- ## What is the difference with Pixi? | Builtin Core Features | Pixi | Conda | Pip | Poetry | uv | |-----------------------------|------|-------|-----|--------|----| | Installs Python | ✅ | ✅ | ❌ | ❌ | ✅ | | Supports Multiple Languages | ✅ | ✅ | ❌ | ❌ | ❌ | | Lockfiles | ✅ | ❌ | ❌ | ✅ | ✅ | | Task runner | ✅ | ❌ | ❌ | ❌ | ❌ | | Workspace Management | ✅ | ❌ | ❌ | ✅ | ✅ | --- ## Available Software Pixi defaults to the **biggest Conda package repository**, [conda-forge](https://conda-forge.org/), which contains over **30,000 packages**. - **Python**: [`python`](https://prefix.dev/channels/conda-forge/packages/python), [`scikit-learn`](https://prefix.dev/channels/conda-forge/packages/scikit-learn), [`pytorch`](https://prefix.dev/channels/conda-forge/packages/pytorch) - **C/C++**: [`clang`](https://prefix.dev/channels/conda-forge/packages/clang), [`boost`](https://prefix.dev/channels/conda-forge/packages/libboost-devel), [`opencv`](https://prefix.dev/channels/conda-forge/packages/opencv), [`ninja`](https://prefix.dev/channels/conda-forge/packages/ninja) - **Java**: [`openjdk`](https://prefix.dev/channels/conda-forge/packages/openjdk), [`gradle`](https://prefix.dev/channels/conda-forge/packages/gradle), [`maven`](https://prefix.dev/channels/conda-forge/packages/maven) - **Rust**: [`rust`](https://prefix.dev/channels/conda-forge/packages/rust), [`cargo-edit`](https://prefix.dev/channels/conda-forge/packages/cargo-edit), [`cargo-insta`](https://prefix.dev/channels/conda-forge/packages/cargo-insta) - **Node.js**: [`nodejs`](https://prefix.dev/channels/conda-forge/packages/nodejs), [`pnpm`](https://prefix.dev/channels/conda-forge/packages/pnpm), [`eslint`](https://prefix.dev/channels/conda-forge/packages/eslint) - **Cli Tools**: [`git`](https://prefix.dev/channels/conda-forge/packages/git), [`gh`](https://prefix.dev/channels/conda-forge/packages/gh), [`ripgrep`](https://prefix.dev/channels/conda-forge/packages/ripgrep), [`make`](https://prefix.dev/channels/conda-forge/packages/make) And browse the thousands more on [prefix.dev](https://prefix.dev/), or host [your own channels](https://prefix.dev/channels/) --- ## Installation To install `pixi`, run: === "Linux & macOS" ```bash curl -fsSL https://pixi.sh/install.sh | sh ``` === "Windows" [Download installer](https://github.com/prefix-dev/pixi/releases/latest/download/pixi-x86_64-pc-windows-msvc.msi){ .md-button } Or run: ```powershell powershell -ExecutionPolicy ByPass -c "irm -useb https://pixi.sh/install.ps1 | iex" ``` !!! tip "Now restart your terminal or shell!" The installation needs to become effective by restarting your terminal or sourcing your shell. ??? question "Don't trust our link? Check the script!" You can check the installation `sh` script: [download](https://pixi.sh/install.sh) and the `ps1`: [download](https://pixi.sh/install.ps1). The scripts are open source and available on [GitHub](https://github.com/prefix-dev/pixi/tree/main/install). [**See all installation options →**](installation.md) --- ## Getting Started === "Python" 1. **Initialize a workspace:** ``` pixi init hello-world cd hello-world ``` 2. **Add dependencies:** ``` pixi add cowpy python ``` 3. **Create your script:** ```py title="hello.py" --8<-- "docs/source_files/pixi_workspaces/introduction/deps_add/hello.py" ``` 5. **Add a task:** ``` pixi task add start python hello.py ``` 6. **Run the task:** ``` pixi run start ``` ``` ✨ Pixi task (start): python hello.py __________________ < Hello Pixi fans! > ------------------ \ ^__^ \ (oo)\_______ (__)\ )\/\ ||----w | || || ``` 7. **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](python/tutorial.md). === "Rust" 1. **Initialize a workspace:** ``` pixi init pixi-rust cd pixi-rust ``` 2. **Add dependencies:** ``` pixi add rust ``` 3. **Create your workspace:** ``` 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](tutorials/rust.md). === "Node.js" 1. **Initialize a workspace:** ``` pixi init pixi-node cd pixi-node ``` 2. **Add dependencies:** ``` pixi add nodejs ``` 3. **Create your script:** ```js title="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! ``` === "ROS2" 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 ``` ??? tip "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](tutorials/ros2.md). === "DevOps" 1. Install all your favorite tools with a single command: ```shell pixi global install terraform ansible k9s make ``` 2. Use them everywhere: ```shell ansible --version terraform --version k9s version make --version ``` --- ## What Developers Say <div class="quote-scroll-wrapper"> <div class="quote-scroll"> <div class="quote-card"> <p>"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."</p> <strong>Guillaume Lemaitre</strong> – <a href="https://scikit-learn.org">scikit-learn</a> </div> <div class="quote-card"> <p>"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!"</p> <strong>Matthew Feickert</strong> – <a href="https://www.wisc.edu/">University of Wisconsin–Madison</a> </div> <div class="quote-card"> <p>"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."</p> <strong>Michael Carroll</strong> – <a href="https://www.ros.org/">Project Lead ROS</a> </div> </div> </div> --- ## Useful Links - [GitHub](https://github.com/prefix-dev/pixi): Pixi source code, feel free to leave a star! - [Discord](https://discord.gg/kKV8ZxyzY4): Join our community and ask questions. - [Prefix.dev](https://prefix.dev/): The company behind Pixi, building the future of package management. - [conda-forge](https://conda-forge.org/): Community-driven collection of recipes for the conda package manager. - [Rattler](https://github.com/conda/rattler): Everything conda but built in Rust. Backend of Pixi. - [rattler-build](https://rattler.build): A blazing fast build system for conda packages.