theme: migrate to stylix iconTheme setting

homeManagerModules/theme.nix

@@ -12,22 +12,21 @@ in {
       pkgs.liberation_ttf
     ];
 
-    gtk.iconTheme = {
-      name =
-        if config.stylix.polarity == "dark"
-        then "Papirus-Dark"
-        else "Papirus";
-
-      package = pkgs.papirus-icon-theme.override {color = "adwaita";};
-    };
-
     qt = lib.mkIf (!config.ar.home.desktop.kde.enable) {
       enable = true;
       platformTheme.name = "kde";
       style.name = "Breeze";
     };
 
-    stylix.targets.gtk.extraCss = builtins.concatStringsSep "\n" [
+    stylix = {
+      iconTheme = {
+        enable = true;
+        dark = "Papirus-Dark";
+        light = "Papirus";
+        package = pkgs.papirus-icon-theme.override {color = "adwaita";};
+      };
+
+      targets.gtk.extraCss = builtins.concatStringsSep "\n" [
         (lib.optionalString ((cfg.desktop.hyprland.enable || cfg.desktop.sway.enable) && !cfg.desktop.gnome.enable) ''
           window.background { border-radius: ${toString cfg.theme.borders.radius}; }
         '')
@@ -68,4 +67,5 @@ in {
           }'')
       ];
     };
+  };
 }