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/baloo.nix

@@ -1,14 +1,17 @@
-{ mkDerivation, lib, extra-cmake-modules, kauth, kconfig
-, kcoreaddons, kcrash, kdbusaddons, kfilemetadata, ki18n, kidletime
-, kio, lmdb, qtbase, solid
+{
+  mkDerivation, lib,
+  extra-cmake-modules,
+  kauth, kconfig, kcoreaddons, kcrash, kdbusaddons, kfilemetadata, ki18n,
+  kidletime, kio, lmdb, qtbase, qtdeclarative, solid,
 }:
 
 mkDerivation {
   name = "baloo";
   meta = { maintainers = [ lib.maintainers.ttuegel ]; };
   nativeBuildInputs = [ extra-cmake-modules ];
-  propagatedBuildInputs = [
-    kauth kconfig kcoreaddons kcrash kdbusaddons kfilemetadata ki18n kio
-    kidletime lmdb qtbase solid
+  buildInputs = [
+    kauth kconfig kcrash kdbusaddons ki18n kio kidletime lmdb qtdeclarative
+    solid
   ];
+  propagatedBuildInputs = [ kcoreaddons kfilemetadata qtbase ];
 }