diff --git a/pkgs/desktops/plasma-5/3rdparty/addons/polonium.nix b/pkgs/desktops/plasma-5/3rdparty/addons/polonium.nix
new file mode 100644
index 000000000000..7bfe963e0e8b
--- /dev/null
+++ b/pkgs/desktops/plasma-5/3rdparty/addons/polonium.nix
@@ -0,0 +1,51 @@
+{ lib
+, fetchFromGitHub
+, buildNpmPackage
+, plasma-framework
+}:
+
+# how to update:
+# 1. check out the tag for the version in question
+# 2. run `prefetch-npm-deps package-lock.json`
+# 3. update npmDepsHash with the output of the previous step
+
+buildNpmPackage rec {
+  pname = "polonium";
+  version = "0.6.0";
+
+  src = fetchFromGitHub {
+    owner = "zeroxoneafour";
+    repo = pname;
+    rev = "v" + version;
+    hash = "sha256-fZgNOcOq+owmqtplwnxeOIQpWmrga/WitCNCj89O5XA=";
+  };
+
+  npmDepsHash = "sha256-25AtM1FweWIbFot+HUMSPYTu47/0eKNpRWSlBEL0yKk=";
+
+  dontConfigure = true;
+
+  # the installer does a bunch of stuff that fails in our sandbox, so just build here and then we
+  # manually do the install
+  buildFlags = [ "res" "src" ];
+
+  nativeBuildInputs = [ plasma-framework ];
+
+  dontNpmBuild = true;
+
+  dontWrapQtApps = true;
+
+  installPhase = ''
+    runHook preInstall
+
+    plasmapkg2 --install pkg --packageroot $out/share/kwin/scripts
+
+    runHook postInstall
+  '';
+
+  meta = with lib; {
+    description = "Auto-tiler that uses KWin 5.27+ tiling functionality";
+    license = licenses.mit;
+    maintainers = with maintainers; [ peterhoeg ];
+    inherit (plasma-framework.meta) platforms;
+  };
+}
diff --git a/pkgs/desktops/plasma-5/default.nix b/pkgs/desktops/plasma-5/default.nix
index 0c501b4c5a4c..781bf1606709 100644
--- a/pkgs/desktops/plasma-5/default.nix
+++ b/pkgs/desktops/plasma-5/default.nix
@@ -49,7 +49,7 @@ let
     mirror = "mirror://kde";
   };
 
-  qtStdenv = libsForQt5.callPackage ({ stdenv }: stdenv) {};
+  qtStdenv = libsForQt5.callPackage ({ stdenv }: stdenv) { };
 
   packages = self:
     let
@@ -96,7 +96,7 @@ let
 
             defaultSetupHook = if hasBin && hasDev then propagateBin else null;
             setupHook = args.setupHook or defaultSetupHook;
-            nativeBuildInputs = (args.nativeBuildInputs or []) ++ [ libsForQt5.wrapQtAppsHook ];
+            nativeBuildInputs = (args.nativeBuildInputs or [ ]) ++ [ libsForQt5.wrapQtAppsHook ];
 
             meta =
               let meta = args.meta or { }; in
@@ -183,6 +183,7 @@ let
         kzones = callPackage ./3rdparty/kwin/scripts/kzones.nix { };
         lightly = callPackage ./3rdparty/lightly { };
         parachute = callPackage ./3rdparty/kwin/scripts/parachute.nix { };
+        polonium = callPackage ./3rdparty/addons/polonium.nix { };
       };
 
     } // lib.optionalAttrs config.allowAliases {