Running nixpkgs-update (https://nix-community.org/update-bot/) with UPDATE_INFO: alsa-ucm-conf 0 -> 1
attrpath: alsa-ucm-conf
Checking auto update branch...
[version] 
[version] generic version rewriter does not support multiple hashes
[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/psxszxzv14lfhqxysx4awwzlkap5sm7h-packages.json.drv
building '/nix/store/psxszxzv14lfhqxysx4awwzlkap5sm7h-packages.json.drv'...

Going to be running update for following packages:
 - alsa-ucm-conf-1.2.15.3

Press Enter key to continue...
Running update for:
Enqueuing group of 1 packages
 - alsa-ucm-conf-1.2.15.3: UPDATING ...
 - alsa-ucm-conf-1.2.15.3: DONE.

Packages updated!

Diff after rewrites:
diff --git a/pkgs/by-name/al/alsa-ucm-conf/package.nix b/pkgs/by-name/al/alsa-ucm-conf/package.nix
index 5f0e2130bb84..db1b097d01a7 100644
--- a/pkgs/by-name/al/alsa-ucm-conf/package.nix
+++ b/pkgs/by-name/al/alsa-ucm-conf/package.nix
@@ -10,11 +10,11 @@
 
 stdenvNoCC.mkDerivation (finalAttrs: {
   pname = "alsa-ucm-conf";
-  version = "1.2.15.3";
+  version = "1.2.16.1";
 
   src = fetchurl {
     url = "mirror://alsa/lib/alsa-ucm-conf-${finalAttrs.version}.tar.bz2";
-    hash = "sha256-n3noE8CPyGz6Rt11xPzaGkpRtILbJgfh/PqvuS9YijE=";
+    hash = "sha256-zz0cB+CJqDxOziwg8F3WqKq3/NEIdow4gROGiAV1SSs=";
   };
 
   patches = [

No auto update branch exists
Old version 1.2.15.3" not present in staging derivation file with contents: {
  directoryListingUpdater,
  fetchurl,
  lib,
  stdenvNoCC,
  coreutils,
  kmod,
}:

stdenvNoCC.mkDerivation (finalAttrs: {
  pname = "alsa-ucm-conf";
  version = "1.2.16.1";

  src = fetchurl {
    url = "mirror://alsa/lib/alsa-ucm-conf-${finalAttrs.version}.tar.bz2";
    hash = "sha256-zz0cB+CJqDxOziwg8F3WqKq3/NEIdow4gROGiAV1SSs=";
  };

  patches = [

  ];

  dontBuild = true;

  installPhase = ''
    runHook preInstall

    substituteInPlace ucm2/lib/card-init.conf \
      --replace-fail "/bin/rm" "${coreutils}/bin/rm" \
      --replace-fail "/bin/mkdir" "${coreutils}/bin/mkdir"
  ''
  + lib.optionalString stdenvNoCC.hostPlatform.isLinux ''
    substituteInPlace ucm2/common/ctl/led.conf \
      --replace-fail '/sbin/modprobe' '${kmod}/bin/modprobe'
  ''
  + ''

    mkdir -p $out/share/alsa
    cp -r ucm ucm2 $out/share/alsa

    runHook postInstall
  '';

  passthru.updateScript = directoryListingUpdater {
    url = "https://www.alsa-project.org/files/pub/lib/";
  };

  meta = {
    homepage = "https://www.alsa-project.org/";
    changelog = "https://github.com/alsa-project/alsa-ucm-conf/releases/tag/v${finalAttrs.version}";
    description = "ALSA Use Case Manager configuration";

    longDescription = ''
      The Advanced Linux Sound Architecture (ALSA) provides audio and
      MIDI functionality to the Linux-based operating system.
    '';

    license = lib.licenses.bsd3;
    maintainers = with lib.maintainers; [
      roastiek
      mvs
      nick-linux
    ];

    platforms = lib.platforms.linux ++ lib.platforms.freebsd;
  };
})