kde5.kcalc: propagate buildInputs

pkgs/desktops/kde-5/applications-16.04/kcalc.nix

@@ -13,27 +13,18 @@
 
 kdeApp {
   name = "kcalc";
-
+  meta = {
+    license = with lib.licenses; [ gpl2 ];
+    maintainers = [ lib.maintainers.fridh ];
+  };
   nativeBuildInputs = [
     extra-cmake-modules
     kdoctools
   ];
-
-  buildInputs = [
-    gmp
-    kconfig
-    kconfigwidgets
-    kguiaddons
-    kinit
-    knotifications
+  propagatedBuildInputs = [
+    gmp kconfig kconfigwidgets kguiaddons kinit knotifications
   ];
-
   postInstall = ''
     wrapQtProgram "$out/bin/kcalc"
   '';
-
-  meta = {
-    license = with lib.licenses; [ gpl2 ];
-    maintainers = [ lib.maintainers.fridh ];
-  };
 }