nix

Nix is an open-source package manager designed to make software deployment reliable and reproducible through a purely functional model. Packages are defined in a declarative way and stored in content-addressed locations, helping avoid conflicts between installed software and supporting reproducible environments across machines. The project targets Linux and other Unix-like systems. New users can find installation instructions, beginner tutorials, and full reference documentation on nix.dev. The repository also provides guidance for setting up a development environment and building Nix from source, along with a contributing guide for community development. Nix is part of a broader ecosystem that includes Nixpkgs, a large free-software package repository, and NixOS, a Linux distribution configured declaratively using the Nix package model. The package manager is licensed under the GNU LGPL v2.1.