# NixOS 25.11 released

DevFeed: [NixOS 25.11 released](<https://devfeed.tech/articles/nixos-25-11-released-38874.md>)

Original publisher: [Read original article](<https://nixos.org/blog/announcements/2025/nixos-2511/>)

Author: NixOS

Published: 2025-11-30T16:00:00Z

Content type: release

Language: en

Sources: [NixOS Announcements](<https://devfeed.tech/sources/nixos-announcements.md>)

Topics: [Nix](<https://devfeed.tech/topics/nix.md>), [Linux](<https://devfeed.tech/topics/linux.md>), [Release notes](<https://devfeed.tech/topics/release-notes.md>), [version](<https://devfeed.tech/topics/version.md>), [configuration](<https://devfeed.tech/topics/configuration.md>), [modules](<https://devfeed.tech/topics/modules.md>), [CMake](<https://devfeed.tech/topics/cmake.md>), [gcc](<https://devfeed.tech/topics/gcc.md>), [LLVM](<https://devfeed.tech/topics/llvm.md>)

Tags: [2026](<https://devfeed.tech/tags/2026.md>), [bugfixes](<https://devfeed.tech/tags/bugfixes.md>), [cmake](<https://devfeed.tech/tags/cmake.md>), [compilers](<https://devfeed.tech/tags/compilers.md>), [deprecated](<https://devfeed.tech/tags/deprecated.md>), [end-of-life](<https://devfeed.tech/tags/end-of-life.md>), [gcc](<https://devfeed.tech/tags/gcc.md>), [linux](<https://devfeed.tech/tags/linux.md>), [llvm](<https://devfeed.tech/tags/llvm.md>), [nix](<https://devfeed.tech/tags/nix.md>), [nixos](<https://devfeed.tech/tags/nixos.md>), [nixpkgs](<https://devfeed.tech/tags/nixpkgs.md>), [release](<https://devfeed.tech/tags/release.md>), [release-notes](<https://devfeed.tech/tags/release-notes.md>), [version](<https://devfeed.tech/tags/version.md>)

## AI overview

NixOS 25.11 "Xantusia" is publicly available. The release updates Nixpkgs with new, updated, and removed packages; adds configuration modules and options; updates GNOME to version 49, LLVM to version 21, and CMake to version 4; and provides bugfix and security updates through June 30, 2026.

## Source excerpt

Hey everyone, we are jopejoe1 and Leona Maroni, the release managers of the newest release of NixOS. We are very proud to announce the public availability of NixOS 25.11 "Xantusia". NixOS is a Linux distribution. Its underlying package repository Nixpkgs can also be used on other Linux systems and macOS with the Nix package manager. This release will receive bugfixes and security updates for seven months (up until 2026-06-30). The old release 25.05 "Warbler" is now officially deprecated and will reach its end-of-life and stop receiving security updates after 2025-12-31. NixOS Release Notes Highlights New Modules Backward Incompatibilities Other Notable Changes Nixpkgs Release Notes Highlights Backward Incompatibilities Other Notable Changes Nixpkgs Library Upgrade Instructions ISO Image Downloads The 25.11 release was made possible due to the efforts of 2742 contributors, who authored 59430 commits since the previous release. Highlights Our vast and routinely maintained set of packages has also been updated. This release of Nixpkgs Added 7002 new packages Updated 25252 existing packages Removed 6338 outdated packages, in an effort to keep the package set maintainable and secure. In addition to packages from Nixpkgs, the NixOS Linux distribution also features composable configuration modules and integration tests for distributed systems. This release of NixOS Added 107 new modules and 1778 configuration options Removed 41 outdated modules and 807 configuration options. GNOME 49 GNOME has been updated to version 49 "Brescia", which removes X11 session support, introduces a new video player, a new document viewer, a redesigned calendar and more changes. Refer to the release notes for more details. C compilers LLVM has been updated to version 21. GCC remains at version 14. CMake was updated to version 4. Special Thanks We want to personally thank Seth and dish for editorializing the release notes Yohann Boniface for the release logo The NixOS infrastructure team for the