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[](https://www.codetriage.com/nixos/nixpkgs)
Nixpkgs is a collection of packages for the [Nix](https://nixos.org/nix/) package
manager. It is periodically built and tested by the [Hydra](https://hydra.nixos.org/)
build daemon as so-called channels. To get channel information via git, add
[nixpkgs-channels](https://github.com/NixOS/nixpkgs-channels.git) as a remote:
% git remote add channels https://github.com/NixOS/nixpkgs-channels.git
For stability and maximum binary package support, it is recommended to maintain
custom changes on top of one of the channels, e.g. `nixos-18.03` for the latest
release and `nixos-unstable` for the latest successful build of master:
```
% git remote update channels
```
For pull-requests, please rebase onto nixpkgs `master`.
[NixOS](https://nixos.org/nixos/) Linux distribution source code is located inside
`nixos/` folder.
* [NixOS installation instructions](https://nixos.org/nixos/manual/#ch-installation)
* [Documentation (Nix Expression Language chapter)](https://nixos.org/nix/manual/#ch-expression-language)
* [Manual (How to write packages for Nix)](https://nixos.org/nixpkgs/manual/)
* [Manual (NixOS)](https://nixos.org/nixos/manual/)
* [Community maintained wiki](https://nixos.wiki/)
* [Continuous package builds for unstable/master](https://hydra.nixos.org/jobset/nixos/trunk-combined)
* [Continuous package builds for 18.03 release](https://hydra.nixos.org/jobset/nixos/release-18.03)
* [Tests for unstable/master](https://hydra.nixos.org/job/nixos/trunk-combined/tested#tabs-constituents)
* [Tests for 18.03 release](https://hydra.nixos.org/job/nixos/release-18.03/tested#tabs-constituents)
* [Discourse Forum](https://discourse.nixos.org/)
* [Mailing list](https://groups.google.com/forum/#!forum/nix-devel)
* [IRC - #nixos on freenode.net](irc://irc.freenode.net/#nixos)