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<a href="[%root%]/nixos/about.html">many other advantages</a>.</p>

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Packages that Nix can build are defined with Nix Expression Language.

<li><a href="[%root%]/nix/manual/#ch-installing-binary">Installation</a></li>

<li><a href="[%root%]/nix/manual/#ch-basic-package-mgmt">Basic package management</a></li>

<li><a href="[%root%]/nix/manual/#sec-channels">What is a channel?</a></li>

<li><a href="[%root%]/nix/manual/#sec-nix-env">nix-env</a> — manipulate or query Nix user environments</li>

<li><a href="[%root%]/nix/manual/#sec-nix-build">nix-build</a> — build a Nix expression</li>

<li><a href="[%root%]/nix/manual/#sec-nix-shell">nix-shell</a> — start an interactive shell based on a Nix expression</li>

<li><a href="[%root%]/nix/manual/#sec-nix-store">nix-store</a> — manipulate or query the Nix store</li>

<a href="[%root%]/nix/manual/#ch-expression-language">Nix expression language</a>

<li><a href="[%root%]/nix/manual/#ssec-builtins">Built-in functions</a></li>

<li><a href="[%root%]/nixpkgs/manual/#sec-functions-library">Nixpkgs Library Functions</a></li>

<li><a href="[%root%]/nixpkgs/manual/#sec-debug">Debugging Nix Expressions</a></li>

<a href="[%root%]/nix/manual" class="btn btn-block">More ...</a>

<p>The Nix Packages collection (Nixpkgs) is a set of thousands of packages for the Nix package manager and NixOS linux distribution.</p>

<li><a href="[%root%]/nixpkgs/manual/#chap-packageconfig">Configure nixpkgs</a></li>

<li><a href="[%root%]/nixpkgs/manual/#chap-overrides">Customize packages (override packages)</a></li>

<li><a href="[%root%]/nixpkgs/manual/#chap-overlays">Extend nixpkgs (via overlays)</a></li>

<a href="[%root%]/nixpkgs/manual/#chap-quick-start">Adding a package to nixpkgs</a>

<li><a href="[%root%]/nixpkgs/manual/#chap-stdenv">The Standard Environment</a></li>

<li><a href="[%root%]/nixpkgs/manual/#chap-pkgs-fetchers">Fetching sources</a></li>

<a href="[%root%]/nixpkgs/manual/#sec-pkgs-dockerTools">Docker</a>,

<a href="[%root%]/nixpkgs/manual/#sec-pkgs-snapTools">Snap</a>,

<a href="[%root%]/nixpkgs/manual/#sec-pkgs-appimageTools">AppImage</a>,

<a href="[%root%]/nixpkgs/manual/#sec-pkgs-ociTools">OCI</a>,

<a href="[%root%]/nixpkgs/manual/#node.js">Javascript (Node)</a>,

<a href="[%root%]/nixpkgs/manual/#python">Python</a>,

<a href="[%root%]/nixpkgs/manual/#sec-language-ruby">Ruby</a>

<a href="[%root%]/nixpkgs/manual/#sec-language-java">Java</a>,

<a href="[%root%]/nixpkgs/manual/#sec-language-go">Go</a>,

<a href="[%root%]/nixpkgs/manual/#rust">Rust</a>,

<a href="[%root%]/nixpkgs/manual/#r">R</a>,

<a href="[%root%]/nixpkgs/manual/#haskell">Haskell</a>,

<a href="[%root%]/nixpkgs/manual/#sec-elm">Elm</a>,

<a href="[%root%]/nixpkgs/manual/#sec-beam">BEAM Languages (Erlang, Elixir, LFE)</a>,

<a href="[%root%]/nixpkgs/manual/#sec-language-lua">Lua</a>,

<a href="[%root%]/nixpkgs/manual/#idris">Idris</a>,

<a href="[%root%]/nixpkgs/manual/#sec-language-coq">Coq</a>,

<a href="[%root%]/nixpkgs/manual/#sec-language-perl">Perl</a>,

<a href="[%root%]/nixpkgs/manual/#sec-language-ocaml">OCaml</a>,

<a href="[%root%]/nixpkgs/manual/#android">Android</a>,

<a href="[%root%]/nixpkgs/manual/#ios">IOS</a>,

<a href="[%root%]/nixpkgs/manual/#titanium">Titanium</a>,

<a href="[%root%]/nixpkgs/manual/#sec-language-texlive">Tex Live</a>,

<a href="[%root%]/nixpkgs/manual/#sec-language-qt">Qt</a>,

<a href="[%root%]/nixpkgs/manual/#vim">Vim</a>,

<a href="[%root%]/nixpkgs/manual/#sec-emacs">Emacs</a>,

<a href="[%root%]/nixpkgs/manual/#sec-eclipse">Eclipse</a>,

<a href="[%root%]/nixpkgs/manual/#sec-kakoune">Kakoune</a>,

<!-- TODO

<a href="[%root%]/nixpkgs/manual/#">Visual Studio Code</a>,

...

<li><a href="[%root%]/nixpkgs/manual/#chap-submitting-changes">Contributing to Nixpkgs</a></li>

<a href="[%root%]/nixpkgs/manual" class="btn btn-block">More ...</a>

<li><a href="[%root%]/nixos/manual/#sec-installation">Installing NixOS</a></li>

<li><a href="[%root%]/nixos/manual/#sec-changing-config">Changing the Configuration</a></li>

<li><a href="[%root%]/nixos/manual/#sec-upgrading">Upgrading NixOS</a></li>

<li><a href="[%root%]/nixos/manual/#sec-configuration-syntax">Configuration Syntax</a></li>

<li><a href="[%root%]/nixos/manual/#sec-package-management">Package Management</a></li>

<li><a href="[%root%]/nixos/manual/#sec-user-management">User Management</a></li>

<li><a href="[%root%]/nixos/manual/#ch-troubleshooting">Troubleshooting</a></li>

<li><a href="[%root%]/nixos/manual/#sec-writing-modules">Writing NixOS Modules</a></li>

<li><a href="[%root%]/nixos/manual/#sec-writing-documentation">Writing NixOS Documentation</a></li>

<li><a href="[%root%]/nixos/manual/#sec-nixos-tests">Writing NixOS Tests</a></li>

<li><a href="[%root%]/nixos/manual/#sec-building-cd">Building Your Own NixOS CD</a></li>

<a href="[%root%]/nixos/manual" class="btn btn-block">More ...</a>

<a href="[%root%]/nixos/nix-pills">Nix Pills</a> — At the beginning you may feel that some of the magic which happens behind the scenes is hard to grasp. This series aims to complement the existing explanations from the more formal documents.</li>

<li><a href="https://nix-cookbook.readthedocs.io">Nix cookbook</a> — Nix Community Cookbook presents topical, practical ways of using Nix package manager ecosystem.</li>

<li><a href="https://discourse.nixos.org/">Discourse</a> — Discourse is a forum where we have discussions and help users out with their questions.</li>

<li><a href="irc://irc.freenode.net/#nixos">IRC</a> — You can drop by on the IRC channel <a href="irc://irc.freenode.net/#nixos"><strong><tt>#nixos</tt></strong></a> on <a href="https://freenode.net/"><tt>irc.freenode.net</tt></a> to chat with the developers or other users.</li>