breeze-qt4: avoid accidental Qt 5 dependency

pkgs/desktops/kde-5/plasma/breeze-qt4.nix

@@ -1,27 +1,22 @@
-{ plasmaPackage
-, automoc4
-, cmake
-, perl
-, pkgconfig
-, kdelibs
-, qt4
-, xproto
+{
+  stdenv, lib, src, version,
+  automoc4, cmake, perl, pkgconfig,
+  kdelibs, qt4, xproto
 }:
 
-plasmaPackage {
-  name = "breeze-qt4";
-  sname = "breeze";
-  buildInputs = [
-    kdelibs
-    qt4
-    xproto
-  ];
-  nativeBuildInputs = [
-    automoc4
-    cmake
-    perl
-    pkgconfig
-  ];
+stdenv.mkDerivation {
+  name = "breeze-qt4-${version}";
+  meta = {
+    license = with lib.licenses; [
+      lgpl21Plus lgpl3Plus bsd2 mit gpl2Plus gpl3Plus fdl12
+    ];
+    platforms = lib.platforms.linux;
+    maintainers = with lib.maintainers; [ ttuegel ];
+    homepage = "http://www.kde.org";
+  };
+  inherit src;
+  buildInputs = [ kdelibs qt4 xproto ];
+  nativeBuildInputs = [ automoc4 cmake perl pkgconfig ];
   cmakeFlags = [
     "-DUSE_KDE4=ON"
     "-DQT_QMAKE_EXECUTABLE=${qt4}/bin/qmake"

pkgs/desktops/kde-5/plasma/default.nix

@@ -40,7 +40,9 @@ let
 
     bluedevil = callPackage ./bluedevil.nix {};
     breeze-gtk = callPackage ./breeze-gtk.nix {};
-    breeze-qt4 = callPackage ./breeze-qt4.nix {};
+    breeze-qt4 = callPackage ./breeze-qt4.nix {
+      inherit (srcs.breeze) src version;
+    };
     breeze-qt5 = callPackage ./breeze-qt5.nix {};
     breeze =
       let