Running nixpkgs-update (https://nix-community.org/update-bot/) with UPDATE_INFO: aacgain 2.0.0-unstable-2022-07-12 -> 2.0.0 https://github.com/dgilman/aacgain/releases
attrpath: aacgain
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/cc5a1bavrkybmyp0j0yj3dpb9zk0phrh-packages.json.drv
building '/nix/store/cc5a1bavrkybmyp0j0yj3dpb9zk0phrh-packages.json.drv'...

Going to be running update for following packages:
 - aacgain-2.0.0-unstable-2022-07-12

Press Enter key to continue...
Running update for:
Enqueuing group of 1 packages
 - aacgain-2.0.0-unstable-2022-07-12: UPDATING ...
 - aacgain-2.0.0-unstable-2022-07-12: DONE.

Packages updated!

Diff after rewrites:
diff --git a/pkgs/by-name/aa/aacgain/package.nix b/pkgs/by-name/aa/aacgain/package.nix
index 8ecde4be226e..9b855b9982fd 100644
--- a/pkgs/by-name/aa/aacgain/package.nix
+++ b/pkgs/by-name/aa/aacgain/package.nix
@@ -11,7 +11,7 @@
 
 stdenv.mkDerivation {
   pname = "aacgain";
-  version = "2.0.0-unstable-2022-07-12";
+  version = "2.0.0-unstable-2022-07-13";
 
   src = fetchFromGitHub {
     owner = "dgilman";

An auto update branch exists with message `aacgain: 2.0.0-unstable-2022-07-12 -> 2.0.0-unstable-2022-07-13`. New version is 2.0.0-unstable-2022-07-13.
An auto update branch exists with an equal or greater version