diff --git a/pkgs/tools/text/kdiff3/default.nix b/pkgs/by-name/kd/kdiff3/package.nix
similarity index 73%
rename from pkgs/tools/text/kdiff3/default.nix
rename to pkgs/by-name/kd/kdiff3/package.nix
index aeb8b5f9c32d..30ddc904204c 100644
--- a/pkgs/tools/text/kdiff3/default.nix
+++ b/pkgs/by-name/kd/kdiff3/package.nix
@@ -3,42 +3,38 @@
   lib,
   fetchurl,
   extra-cmake-modules,
-  kdoctools,
-  wrapQtAppsHook,
   boost,
-  kcrash,
-  kconfig,
-  kinit,
-  kparts,
-  kiconthemes,
+  kdePackages,
 }:
 
 stdenv.mkDerivation (finalAttrs: {
   pname = "kdiff3";
-  version = "1.11.5";
+  version = "1.12.2";
 
   src = fetchurl {
     url = "mirror://kde/stable/kdiff3/kdiff3-${finalAttrs.version}.tar.xz";
-    hash = "sha256-Qg8Ys7lolpigXhAvikFxkEkHTaaPlslL4Y0bgpfutUU=";
+    hash = "sha256-MaN8vPnUIHintIRdQqwaAzp9cjKlq66qAo9kJbufpDk=";
   };
 
   nativeBuildInputs = [
     extra-cmake-modules
-    kdoctools
-    wrapQtAppsHook
+    kdePackages.kdoctools
+    kdePackages.wrapQtAppsHook
   ];
 
-  buildInputs = [
+  buildInputs = with kdePackages; [
+    qtbase
     boost
     kconfig
     kcrash
-    kinit
     kparts
     kiconthemes
   ];
 
   cmakeFlags = [ "-Wno-dev" ];
 
+  env.LANG = "C.UTF-8";
+
   postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     ln -s "$out/Applications/KDE/kdiff3.app/Contents/MacOS" "$out/bin"
   '';
@@ -49,6 +45,6 @@ stdenv.mkDerivation (finalAttrs: {
     homepage = "https://invent.kde.org/sdk/kdiff3";
     license = licenses.gpl2Plus;
     maintainers = with maintainers; [ peterhoeg ];
-    platforms = with platforms; linux ++ darwin;
+    inherit (kdePackages.qtbase.meta) platforms;
   };
 })
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 36c59b188674..786bf3f50164 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -4046,8 +4046,6 @@ with pkgs;
 
   kronometer = libsForQt5.callPackage ../tools/misc/kronometer { };
 
-  kdiff3 = libsForQt5.callPackage ../tools/text/kdiff3 { };
-
   kwalletcli = libsForQt5.callPackage ../tools/security/kwalletcli { };
 
   peruse = libsForQt5.callPackage ../tools/misc/peruse { };