making some tweaks to desktop

pkgs/desktop-packages.nix

@@ -43,7 +43,7 @@ with lib;
     aria2
     sassc
     # pantalaimon
-    plasma5Packages.kwallet
+    kdePackages.kwallet
     # sierra-breeze-enhanced
     libimobiledevice
     # textgen-amd
@@ -106,11 +106,12 @@ with lib;
     # firefox
     # kate
     kdialog
-    plasma5Packages.khotkeys
+    # kdePackages.khotkeys
     # openlp
     inkscape
     libreoffice-fresh
     vlc
+    elegant-sddm
     # neochat
     haskellPackages.greenclip
     pulsemixer
@@ -171,7 +172,7 @@ with lib;
     sqlite
     fennel
     blesh
-    plasma5Packages.plasma-sdk
+    kdePackages.plasma-sdk
     ardour
     qpwgraph
     zam-plugins