nixpkgs/doc/release-notes/rl-2511.section.md

# Nixpkgs 25.11 ("Xantusia", 2025.11/??) {#sec-nixpkgs-release-25.11}

## Highlights {#sec-nixpkgs-release-25.11-highlights}
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- Added `allowVariants` to gate availability of package sets like `pkgsLLVM`, `pkgsMusl`, `pkgsZig`, etc. This option will be removed in a future release.

- The initial work to support native compilation on LoongArch64 has completed, with further changes currently
  in preparation. In accordance with the [Software Development and Build Convention for LoongArch Architectures](https://github.com/loongson/la-softdev-convention),
  this release sets the default march level to `la64v1.0`, covering the desktop and server processors of 3X5000
  and newer series. However, embedded chips without LSX (Loongson SIMD eXtension), such as 2K0300 SoC, are not
  supported. `pkgsCross.loongarch64-linux-embedded` can be used to build software and systems for these platforms.

## Backward Incompatibilities {#sec-nixpkgs-release-25.11-incompatibilities}

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## Other Notable Changes {#sec-nixpkgs-release-25.11-notable-changes}

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## Nixpkgs Library {#sec-nixpkgs-release-25.11-lib}

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### Breaking changes {#sec-nixpkgs-release-25.11-lib-breaking}

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### Deprecations {#sec-nixpkgs-release-25.11-lib-deprecations}

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### Additions and Improvements {#sec-nixpkgs-release-25.11-lib-additions-improvements}

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