Running nixpkgs-update (https://nix-community.org/update-bot/) with UPDATE_INFO: alsa-lib 0 -> 1
attrpath: alsa-lib
Checking auto update branch...
[version] 
[version] skipping because derivation has updateScript
[rustCrateVersion] 
[rustCrateVersion] No cargoHash found
[golangModuleVersion] 
[golangModuleVersion] Not a buildGoModule package with vendorHash
[npmDepsVersion] 
[npmDepsVersion] No npmDepsHash
[updateScript] 
[updateScript] Success
[updateScript] this derivation will be built:
  /nix/store/07k5i21mjpbwaw1pl6hlgz3lvrg36yn6-packages.json.drv
building '/nix/store/07k5i21mjpbwaw1pl6hlgz3lvrg36yn6-packages.json.drv'...

Going to be running update for following packages:
 - alsa-lib-1.2.15.1

Press Enter key to continue...
Running update for:
Enqueuing group of 1 packages
 - alsa-lib-1.2.15.1: UPDATING ...
 - alsa-lib-1.2.15.1: DONE.

Packages updated!

Diff after rewrites:
diff --git a/pkgs/by-name/al/alsa-lib/package.nix b/pkgs/by-name/al/alsa-lib/package.nix
index 4f442dd759e9..c4cd313415f8 100644
--- a/pkgs/by-name/al/alsa-lib/package.nix
+++ b/pkgs/by-name/al/alsa-lib/package.nix
@@ -10,11 +10,11 @@
 
 stdenv.mkDerivation (finalAttrs: {
   pname = "alsa-lib";
-  version = "1.2.15.1";
+  version = "1.2.15.3";
 
   src = fetchurl {
     url = "mirror://alsa/lib/alsa-lib-${finalAttrs.version}.tar.bz2";
-    hash = "sha256-f5g8qJykIIcsoW6Kn4+X+2PbbBxuJYW5Fzegi7A/Vmw=";
+    hash = "sha256-ewedYU1YLK3nq42yNk5lJx0Id6N9+HV6xKwMiXC+hh4=";
   };
 
   patches = [

No auto update branch exists
There might already be an open PR for this update:
- alsa-ucm-conf: 1.2.15.1 → 1.2.15.3-unstable-2026-01-29; validate in alsa-lib
  URL "https://api.github.com/repos/NixOS/nixpkgs/issues/392058"