diff --git a/modules/nixos/themes/a-happy-gnome/default.nix b/modules/nixos/themes/a-happy-gnome/default.nix
index 45b2ffa0..c5f09c51 100644
--- a/modules/nixos/themes/a-happy-gnome/default.nix
+++ b/modules/nixos/themes/a-happy-gnome/default.nix
@@ -92,6 +92,7 @@ in
       gnomeExtensions.arcmenu
       gnomeExtensions.appindicator
       gnomeExtensions.burn-my-windows
+      gnomeExtensions.desktop-cube
       gnomeExtensions.gsconnect
       gnomeExtensions.x11-gestures
       gnomeExtensions.kimpanel
@@ -102,9 +103,6 @@ in
       # TODO: Use from nixpkgs once fly-pie is fixed.
       gnome-shell-extension-fly-pie
 
-      # TODO: Also these two...
-      gnome-shell-extension-desktop-cube
-
       # GNOME search providers.
       gnome-search-provider-recoll
     ];
diff --git a/pkgs/default.nix b/pkgs/default.nix
index 1deff696..485eab83 100644
--- a/pkgs/default.nix
+++ b/pkgs/default.nix
@@ -20,8 +20,6 @@ let
       gnome-search-provider-recoll =
         callPackage ./gnome-search-provider-recoll.nix { };
       gnome-extension-manager = callPackage ./gnome-extension-manager.nix { };
-      gnome-shell-extension-desktop-cube =
-        callPackage ./gnome-shell-extension-desktop-cube.nix { };
       gnome-shell-extension-fly-pie =
         callPackage ./gnome-shell-extension-fly-pie.nix { };
       gnome-shell-extension-pop-shell =
diff --git a/pkgs/gnome-shell-extension-desktop-cube.nix b/pkgs/gnome-shell-extension-desktop-cube.nix
deleted file mode 100644
index 03045724..00000000
--- a/pkgs/gnome-shell-extension-desktop-cube.nix
+++ /dev/null
@@ -1,48 +0,0 @@
-{ lib, stdenv, bash, fetchFromGitHub, glib, gettext, zip, unzip }:
-
-# TODO: Deprecate this package once it is successfully packaged in nixpkgs.
-stdenv.mkDerivation rec {
-  pname = "gnome-shell-extension-desktop-cube";
-  version = "9";
-
-  src = fetchFromGitHub {
-    owner = "Schneegans";
-    repo = "Desktop-Cube";
-    rev = "v${version}";
-    sha256 = "sha256-HpOZrwFBzHFfIpPbdEQOi7YF+Paz4SWyQtkU3I73K1I=";
-  };
-
-  nativeBuildInputs = [ glib gettext ];
-  buildInputs = [ zip ];
-  skipConfigure = true;
-
-  buildPhase = ''
-    # This will create the necessary files to be exported.
-    # And we'll use the generated zip file as a foundation for the output.
-    make SHELL=${bash}/bin/bash ${passthru.extensionUuid}.zip
-  '';
-
-  installPhase = let
-    extensionDir =
-      "$out/share/gnome-shell/extensions/${passthru.extensionUuid}";
-  in ''
-    # Install the required extensions file.
-    mkdir -p ${extensionDir}
-    ${unzip}/bin/unzip ${passthru.extensionUuid}.zip -d ${extensionDir}
-
-    # Install the GSchema.
-    install -Dm644 schemas/* -t "${
-      glib.makeSchemaPath "$out" "${pname}-${version}"
-    }"
-  '';
-
-  passthru.extensionUuid = "desktop-cube@schneegans.github.com";
-
-  meta = with lib; {
-    description =
-      "A GNOME shell to transition between workspaces the old-fashioned way";
-    license = licenses.gpl3Plus;
-    homepage = "https://github.com/Schneegans/Desktop-Cube";
-    platforms = platforms.linux;
-  };
-}