# Nix [](https://opencollective.com/nixos) [](https://github.com/NixOS/nix/actions) Nix is a powerful package manager for Linux and other Unix systems that makes package management reliable and reproducible. Please refer to the [Nix manual](https://nixos.org/nix/manual) for more details. ## Installation and first steps Visit [nix.dev](https://nix.dev) for [installation instructions](https://nix.dev/tutorials/install-nix) and [beginner tutorials](https://nix.dev/tutorials/first-steps). Full reference documentation can be found in the [Nix manual](https://nixos.org/nix/manual). ## Building And Developing See our [Hacking guide](https://nixos.org/manual/nix/unstable/contributing/hacking.html) in our manual for instruction on how to set up a development environment and build Nix from source. ## Contributing Check the [contributing guide](./CONTRIBUTING.md) if you want to get involved with developing Nix. ## Additional Resources - [Nix manual](https://nixos.org/nix/manual) - [Nix jobsets on hydra.nixos.org](https://hydra.nixos.org/project/nix) - [NixOS Discourse](https://discourse.nixos.org/) - [Matrix - #nix:nixos.org](https://matrix.to/#/#nix:nixos.org) ## License Nix is released under the [LGPL v2.1](./COPYING).