klipper 0 -> 1
attrpath: klipper
Checking auto update branch...
[version] 
[version] skipping because derivation has updateScript
[rustCrateVersion] 
[rustCrateVersion] No cargoSha256 or cargoHash found
[golangModuleVersion] 
[golangModuleVersion] Not a buildGoModule package with vendorSha256 or vendorHash
[npmDepsVersion] 
[npmDepsVersion] No npmDepsHash
[updateScript] 
[updateScript] Success
[updateScript] 
Going to be running update for following packages:
 - klipper-unstable-2023-09-10

Press Enter key to continue...
Running update for:
 - klipper-unstable-2023-09-10: UPDATING ...
 - klipper-unstable-2023-09-10: DONE.

Packages updated!


[quotedUrls]
[quotedUrls] nothing found to replace
Diff after rewrites:
diff --git a/pkgs/servers/klipper/default.nix b/pkgs/servers/klipper/default.nix
index 6428e7510c44..12b26d3bfcb8 100644
--- a/pkgs/servers/klipper/default.nix
+++ b/pkgs/servers/klipper/default.nix
@@ -8,13 +8,13 @@
 
 stdenv.mkDerivation rec {
   pname = "klipper";
-  version = "unstable-2023-09-10";
+  version = "unstable-2023-09-29";
 
   src = fetchFromGitHub {
     owner = "KevinOConnor";
     repo = "klipper";
-    rev = "8ef0f7d7e3d3b2ac7bc1e80ed3295ceca6bba4e7";
-    sha256 = "sha256-f/fPnZvtnASphYtvM9NBae0on8GWSwQPykukZ3XCy3M=";
+    rev = "7bd32994d4ee7eff613413d7a813bb3b17b8f6d3";
+    sha256 = "sha256-0geN9b4JknKax2S5Y0e9Eg+rnqQyYPV0S8o8N5PGN+M=";
   };
 
   sourceRoot = "${src.name}/klippy";

No auto update branch exists
There might already be an open PR for this update:
- moonraker: unstable-2022-11-18 -> unstable-2023-08-03
  URL "https://api.github.com/repos/NixOS/nixpkgs/issues/202276"