theme: use qtengine

modules/theme/default.nix

@@ -1,4 +1,28 @@
-{ self, lib, config, pkgs, ... }: {
+{ self, lib, config, pkgs, inputs, ... }: {
+  imports = [ inputs.qtengine.nixosModules.default ];
+
+  programs.qtengine = {
+    enable = true;
+
+    config = {
+      theme = {
+        colorScheme = "${pkgs.kdePackages.breeze}/share/color-schemes/BreezeDark.colors";
+        iconTheme = "breeze-dark";
+        style = "breeze";
+        fontFixed = "JetBrainsMono Nerd Font";
+        fontFixedSize = 12;
+        font = "DejaVu Sans";
+        fontSize = 12;
+      };
+
+      misc = {
+        singleClickActivate = false;
+        menusHaveIcons = true;
+        shortcutsForContextMenus = true;
+      };
+    };
+  };
+
   environment.systemPackages = with pkgs; [
     qt6.qtwayland
     kdePackages.breeze
@@ -15,7 +39,7 @@
 
   qt = {
     enable = true;
-    platformTheme = "qt5ct";
+    platformTheme = null;
   };
 
   home-manager.users.${config.main-user} = {

modules/theme/home.nix

@@ -4,51 +4,11 @@
     Inherits=breeze_cursors
   '';
 
-  xdg.configFile = let
-    qtctConf = kdecolors: ''
-      [Appearance]
-      ${if kdecolors then ''
-        color_scheme_path=${pkgs.kdePackages.breeze}/share/color-schemes/BreezeDark.colors
-      '' else ''
-        color_scheme_path=${./colors-qt5ct.conf}
-      ''}
-      custom_palette=true
-      icon_theme=breeze-dark
-      standard_dialogs=xdgdesktopportal
-      style=Breeze
-
-      [Fonts]
-      fixed="JetBrainsMono Nerd Font,12,-1,5,500,0,0,0,0,0,0,0,0,0,0,1,Medium"
-      general="DejaVu Sans,12,-1,5,400,0,0,0,0,0,0,0,0,0,0,1"
-
-      [Interface]
-      activate_item_on_single_click=1
-      buttonbox_layout=0
-      cursor_flash_time=1000
-      dialog_buttons_have_icons=2
-      double_click_interval=400
-      keyboard_scheme=2
-      menus_have_icons=true
-      show_shortcuts_in_context_menus=true
-      toolbutton_style=2
-      underline_shortcut=1
-      wheel_scroll_lines=3
-
-      [Troubleshooting]
-      force_raster_widgets=0
-    '';
-  in {
+  xdg.configFile = {
     # fixes dolphin background colors
     "kdeglobals".source = "${pkgs.kdePackages.breeze}/share/color-schemes/BreezeDark.colors";
-
-    "qt5ct/qt5ct.conf".text = qtctConf false;
-    "qt6ct/qt6ct.conf".text = qtctConf true;
   };
 
-  home.packages = [
-    pkgs.kdePackages.breeze
-  ];
-
   gtk = {
     enable = true;
     theme = {