Nixpkgs

Nixpkgs是最大的Nix包仓库和NixOS模块。该仓库存储在GitHub上，由社区维护，并得到NixOS基金会的官方支持。

搜索可用的包和选项，见搜索包。

正如NixOS 24.11发行公告所强调的，“NixOS已经被认为是最与时俱进的发行版和包最多的发行版”。Nixpkgs能成为杰出的Linux包仓库，归功于社区的持续贡献。

子页面

这里有一些关于操作nixpkgs的文章：

• Building RPM DEB with nixpkgs
• Contributing
• Create and debug packages
• Manuals
• Modifying Packages
• Patching Nixpkgs
• Reviewing changes
• Update Scripts

发行版本

Main article: Channel branches

托管在Nixpkgs上的包和模块通过多个频道分支分发，以供特定用途。实际上，它们的区别在于更新必须在官方nixos.org Hydra实例上通过的测试等级，以及它们的更新数量。

对于NixOS用户，nixos-unstable频道分支是滚动发行版，包通过构建测试和虚拟机上的集成测试，并通过操作系统方面的测试（这意味着测试对象还有类似X服务器、KDE、各种服务器和低级细节如安装引导加载程序（bootloaders）和运行NixOS安装步骤）。

For standalone Nix users, nixpkgs-unstable channel branch is the rolling release, where packages pass only basic build tests and are upgraded continuously.

Both NixOS and Nix users can use stable channel branches (see https://status.nixos.org/ for the current channels) to receive only conservative updates for fixing critical bugs and security vulnerabilities. Stable channel branches are released bi-annually at the end of May and the end of November.

Using stable channels on NixOS is comparable to the user experience on other Linux distributions.

Alternatives

Due to the fact that Nixpkgs is only a Nix expression, it is possible to extend or replace the logic with your own sources. In fact, there are a number of extensions as well as complete replacements for Nixpkgs, see the Alternative Package Sets article.