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-rw-r--r--nixpkgs/nixos/doc/manual/release-notes/rl-2111.section.md2
1 files changed, 2 insertions, 0 deletions
diff --git a/nixpkgs/nixos/doc/manual/release-notes/rl-2111.section.md b/nixpkgs/nixos/doc/manual/release-notes/rl-2111.section.md
index 159881a0ac4c..400eb1062d9a 100644
--- a/nixpkgs/nixos/doc/manual/release-notes/rl-2111.section.md
+++ b/nixpkgs/nixos/doc/manual/release-notes/rl-2111.section.md
@@ -441,6 +441,8 @@ In addition to numerous new and upgraded packages, this release has the followin
 
 - `pkgs.haskell-language-server` will now by default be linked dynamically to improve TemplateHaskell compatibility. To mitigate the increased closure size it will now by default only support our current default ghc (at the moment 9.0.2). Add other ghc versions via e.g. `pkgs.haskell-language-server.override { supportedGhcVersions = [ "90" "92" ]; }`.
 
+- `pkgs.redis` is now built using the system jemalloc. This disables the experimental active defragmentation feature of redis. Users who require this feature can switch back to redis' vendored version of jemalloc by setting `services.redis.package = pkgs.redis.override { useSystemJemalloc = false; };`.
+
 ## Other Notable Changes {#sec-release-21.11-notable-changes}