escape dependency hell

pixi - powerful development environments on Windows, macOS and Linux

pixi is a fast software package manager built on top of the existing conda ecosystem. Spins up development environments quickly on Windows, macOS and Linux.

Automatic lockfiles produce reproducible environments across operating systems (without Docker!).

pixi supports Python, R, C/C++, Rust, Ruby, and many other languages.

Install pixi

To install, run the following command in your terminal:

Or find alternative installation methods in our documentation.

Get started quickly

Our mission is to make pixi as simple as possible to use.

Getting a complex project running is as simple as pixi run start

Reproducible: Work in dedicated, isolated environments that can still be recreated in a 100 years.
Tasks: Simplify complex tasks by utilizing command shortcuts.
CI: Replicate environments in CI with ease.

Terminal

➜ pixi init project

✓ Created /home/user/project/pixi.toml

➜ cd project

~/project

➜ pixi add python numpy cmake

✓ Added python >=3.13.0,<3.14

✓ Added numpy >=2.1.3,<3

✓ Added cmake >=3.31.1,<4

~/project

➜ pixi run python --version

Python 3.13.0

~/project

➜ pixi add python==3.10

✓ Added python==3.10

~/project

➜ pixi run python --version

Python 3.10.0

Collaborate with developers

Great projects are the fruit of collective effort. Pixi makes onboarding and collaboration simple and seamless.

Reproducibility: Always maintain updated lockfiles.
Multi-platform: Ensure compatibility across Windows, MacOS, and Linux.
Version Control: Leverage Git to keep track of your environment changes.

Terminal

~/project

➜ cat pixi.toml

[project]

name = "project"

version = "0.1.0"

description = "Example project"

authors = ["Pixi <hi@prefix.dev>"]

channels = ["conda-forge"]

platforms = ["linux-64", "win-64", "osx-arm64", "osx-64"]

[tasks]

start = "python main.py"

[dependencies]

python = ">=3.13.0,<3.14"

numpy = ">=2.1.3,<3"

cmake = ">=3.31.1,<4"

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Transform your project into a Conda package for effortless installation on any machine.

Terminal

~/project

➜ pixi build

✓ Build project successfully into /home/user/project/project-0.1.0.conda

Powered by open-source channels

conda-forge, bioconda, robostack, and more!

We are building on top of the Conda packaging ecosystem, which already provides thousands of packages for Python and other languages. We are looking at ways to unify this with the existing PyPI ecosystem. Learn more about the Conda ecosystem and its channels in our documentation.

36,090 packages1,602,187 releases10,000,000+ monthly downloads

Build your own packages faster than ever

Discover rattler-build, our revolutionary tooling to build standard compliant conda packages faster than ever. We went back to the drawing board and came up with a much improved recipe format that makes it easier than ever to package even the most complex software into easy-to-install packages for Conda, Mamba and Pixi.

recipe.yaml

package:
  name: python
  version: 3.14.0a7

source:
  - url: https://github.com/python/cpython/archive/refs/tags/v3.14.0a7.tar.gz
    sha256: ad83cda00a8a30adbad263d8e25455397be0641ded65d731b78ec178ed74570c

build:
  script:
    - export LDFLAGS="-headerpad_max_install_names $LDFLAGS"
    - ./configure --enable-shared --prefix $PREFIX
    - make -j${CPU_COUNT}
    - make install

requirements:
  build:
    - ${{ compiler('c') }}
    - ${{ compiler('cxx') }}
    - make
    - libtool
    - pkg-config
    - llvm-tools
    - python 3.13.*