diff --git a/pkgs/development/libraries/kddockwidgets/default.nix b/pkgs/development/libraries/kddockwidgets/default.nix
new file mode 100644
index 000000000000..b63bdc979c42
--- /dev/null
+++ b/pkgs/development/libraries/kddockwidgets/default.nix
@@ -0,0 +1,29 @@
+{ lib
+, mkDerivation
+, fetchFromGitHub
+, cmake
+, qtbase
+, qtx11extras
+}:
+
+mkDerivation rec {
+  pname = "KDDockWidgets";
+  version = "1.4.0";
+
+  src = fetchFromGitHub {
+    owner = "KDAB";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "sha256-lgNRuRoJhBw0n/Hb58uxpa+4aXoOrK4bRldtIXYIKLI=";
+  };
+
+  nativeBuildInputs = [ cmake ];
+  buildInputs = [ qtbase qtx11extras ];
+
+  meta = with lib; {
+    description = "KDAB's Dock Widget Framework for Qt";
+    homepage = "https://www.kdab.com/development-resources/qt-tools/kddockwidgets";
+    license = with licenses; [ gpl2Only gpl3Only ];
+    maintainers = with maintainers; [ _1000teslas ];
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index cd2f731315d5..b80f14f87001 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -16328,6 +16328,8 @@ with pkgs;
 
   judy = callPackage ../development/libraries/judy { };
 
+  kddockwidgets = libsForQt5.callPackage ../development/libraries/kddockwidgets { };
+
   keybinder = callPackage ../development/libraries/keybinder {
     automake = automake111x;
     lua = lua5_1;
@@ -18551,6 +18553,8 @@ with pkgs;
 
   rubberband = callPackage ../development/libraries/rubberband { };
 
+  rustc-demangle = callPackage ../development/libraries/rustc-demangle { };
+
   s2geometry = callPackage ../development/libraries/s2geometry { };
 
   /*  This package references ghc844, which we no longer have. Unfortunately, I