Nix package manager

While not immediately apparent, the name Nix refers to a number of different tools and concepts:

• Nix (package manager): tooling for managing packages and build processes using the Nix language;
• Nix (language): a declarative language used for defining expressions that are evaluated by the various Nix tools;
• Nix (command): the new experimental CLI interface that aims to unify the various Nix commands;
• Nix (command line utilities): a set of CLI tools that evaluate Nix expressions with the goal of producing various builds;
• The Nix ecosystem, a set of tools and programs built upon the Nix language.

There are other related concepts that might also be relevant:

• Nixpkgs: a repository of Nix packages;
• NixOS: the Linux distribution built on top of the Nix package manager and Nixpkgs repository;
• NixOS (command line utilities): a set of CLI tools used in managing a NixOS installation.