pangomm_2_42 0 -> 1
attrpath: pangomm_2_42
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:
 - pangomm-2.42.2

Press Enter key to continue...
Running update for:
 - pangomm-2.42.2: UPDATING ...
 - pangomm-2.42.2: DONE.

Packages updated!

Diff after rewrites:
diff --git a/pkgs/development/libraries/pangomm/default.nix b/pkgs/development/libraries/pangomm/default.nix
index ccabdfdcfe8a..02a76869cf1e 100644
--- a/pkgs/development/libraries/pangomm/default.nix
+++ b/pkgs/development/libraries/pangomm/default.nix
@@ -3,11 +3,11 @@
 
 stdenv.mkDerivation rec {
   pname = "pangomm";
-  version= "2.46.3";
+  version= "2.46.4";
 
   src = fetchurl {
     url = "mirror://gnome/sources/${pname}/${lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
-    sha256 = "sha256-QQ/gTUcaYI8/AnPToX2EAkHZEe0P8sdYqYWcZsbyQ3k=";
+    sha256 = "sha256-uSAWZhUmQk3kuTd/FRL1l4H0H7FsnAJn1hM7oc1o2yI=";
   };
 
   outputs = [ "out" "dev" ];

No auto update branch exists
Old version 2.42.2" not present in master derivation file with contents: { lib, stdenv, fetchurl, pkg-config, meson, ninja, python3, pango, glibmm, cairomm, gnome
, ApplicationServices }:

stdenv.mkDerivation rec {
  pname = "pangomm";
  version= "2.46.3";

  src = fetchurl {
    url = "mirror://gnome/sources/${pname}/${lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
    sha256 = "sha256-QQ/gTUcaYI8/AnPToX2EAkHZEe0P8sdYqYWcZsbyQ3k=";
  };

  outputs = [ "out" "dev" ];

  nativeBuildInputs = [ pkg-config meson ninja python3 ] ++ lib.optionals stdenv.isDarwin [
    ApplicationServices
  ];
  propagatedBuildInputs = [ pango glibmm cairomm ];

  doCheck = true;

  passthru = {
    updateScript = gnome.updateScript {
      packageName = pname;
      versionPolicy = "odd-unstable";
      freeze = true;
    };
  };

  meta = with lib; {
    description = "C++ interface to the Pango text rendering library";
    homepage    = "https://www.pango.org/";
    license     = with licenses; [ lgpl2 lgpl21 ];
    maintainers = with maintainers; [ lovek323 raskin ];
    platforms   = platforms.unix;

    longDescription = ''
      Pango is a library for laying out and rendering of text, with an
      emphasis on internationalization.  Pango can be used anywhere
      that text layout is needed, though most of the work on Pango so
      far has been done in the context of the GTK widget toolkit.
      Pango forms the core of text and font handling for GTK.
    '';
  };
}