breeze-icons: add qtsvg as a propagatedBuildInput

pkgs/kde/frameworks/breeze-icons/default.nix

@@ -2,6 +2,7 @@
   mkKdeDerivation,
   python3,
   libxml2,
+  qtsvg,
 }:
 mkKdeDerivation {
   pname = "breeze-icons";
@@ -11,6 +12,11 @@ mkKdeDerivation {
     libxml2
   ];
 
+  # This package contains an SVG icon theme and an API forcing its use
+  extraPropagatedBuildInputs = [
+    qtsvg
+  ];
+
   # lots of icons, takes forever, does absolutely nothing
   dontStrip = true;
 }