kdeFrameworks: fixup inputs and outputs

- Reduce environment pollution with a separate $bin output containing programs,
  plugins, and shared data. Libraries remain in $out and are not installed into
  the environment.
- Only propagate build inputs as required.

pkgs/development/libraries/kde-frameworks/kxmlgui.nix

@@ -1,14 +1,17 @@
-{ mkDerivation, lib, extra-cmake-modules, attica, kconfig
-, kconfigwidgets, kglobalaccel, ki18n, kiconthemes, kitemviews
-, ktextwidgets, kwindowsystem, sonnet
+{
+  mkDerivation, lib,
+  extra-cmake-modules,
+  attica, kconfig, kconfigwidgets, kglobalaccel, ki18n, kiconthemes, kitemviews,
+  ktextwidgets, kwindowsystem, qtbase, sonnet,
 }:
 
 mkDerivation {
   name = "kxmlgui";
   meta = { maintainers = [ lib.maintainers.ttuegel ]; };
   nativeBuildInputs = [ extra-cmake-modules ];
-  propagatedBuildInputs = [
-    attica kconfig kconfigwidgets kglobalaccel ki18n kiconthemes kitemviews
-    ktextwidgets kwindowsystem sonnet
+  buildInputs = [
+    attica kglobalaccel ki18n kiconthemes kitemviews ktextwidgets kwindowsystem
+    sonnet
   ];
+  propagatedBuildInputs = [ kconfig kconfigwidgets qtbase ];
 }