Running nixpkgs-update (https://nix-community.org/update-bot/) with UPDATE_INFO: distrobuilder 3.3.1 -> 3.4.0 https://github.com/lxc/distrobuilder/releases
attrpath: distrobuilder
Checking auto update branch...
[version] 
[version] generic version rewriter does not support multiple hashes
[rustCrateVersion] 
[rustCrateVersion] No cargoHash found
[golangModuleVersion] 
[golangModuleVersion] skipping because derivation has updateScript
[npmDepsVersion] 
[npmDepsVersion] No npmDepsHash
[updateScript] 
[updateScript] Success
[updateScript] this derivation will be built:
  /nix/store/zr3h5zgz6nkyyxcls5lgib30w7939pmj-packages.json.drv
building '/nix/store/zr3h5zgz6nkyyxcls5lgib30w7939pmj-packages.json.drv'...
structuredAttrs is enabled

Going to be running update for following packages:
 - distrobuilder-3.3.1

Press Enter key to continue...
Running update for:
Enqueuing group of 1 packages
 - distrobuilder-3.3.1: UPDATING ...
 - distrobuilder-3.3.1: DONE.

Packages updated!

Diff after rewrites:
diff --git a/pkgs/by-name/di/distrobuilder/package.nix b/pkgs/by-name/di/distrobuilder/package.nix
index f0b242a5c4c5..3b8e7f8d16bf 100644
--- a/pkgs/by-name/di/distrobuilder/package.nix
+++ b/pkgs/by-name/di/distrobuilder/package.nix
@@ -35,15 +35,15 @@ let
 in
 buildGoModule (finalAttrs: {
   pname = "distrobuilder";
-  version = "3.3.1";
+  version = "3.4.0";
 
-  vendorHash = "sha256-7dYfY6u8URJDMADY6yTW2SjOeSiRwqIh7oxUup6BHMg=";
+  vendorHash = "sha256-ipKwCeUNVgtkQTPOB5lze2SFaktClUr+4+c0uLX5J/w=";
 
   src = fetchFromGitHub {
     owner = "lxc";
     repo = "distrobuilder";
     tag = "v${finalAttrs.version}";
-    sha256 = "sha256-l9HtpeG4BSN9saDsNaF9uyOJbHGyLN0PwJ728IJfN/s=";
+    sha256 = "sha256-dcRUUHpaqNCq4eld+anVrGKywJNpZLJYu3WtERlP3Ps=";
   };
 
   buildInputs = bins;

No auto update branch exists
There might already be an open PR for this update:
- distrobuilder: 3.3.1 -> 3.4.0
  URL "https://api.github.com/repos/NixOS/nixpkgs/issues/568423"