desktop: configure qtct appearance

nixos/desktop.nix

@@ -98,6 +98,13 @@ let
           };
         };
       };
+
+      xdg.configFile."ghostty/config" = {
+        force = true;
+        text = ''
+          confirm-close-surface = false
+        '';
+      };
     }
   ];
 
@@ -110,6 +117,8 @@ let
       hicolor-icon-theme
       # libsForQt5.breeze-gtk
       # materia-theme
+      kdePackages.qt6ct
+      libsForQt5.qt5ct
       numix-icon-theme-circle
       papirus-icon-theme
 

nixos/environment.nix

@@ -88,6 +88,7 @@ with lib;
         NIXPKGS_GIT_REV = "${inputs.nixpkgs.rev}";
         NIXPKGS_SOURCE = "${inputs.nixpkgs.outPath}";
         EDITOR = "emacsclient --alternate-editor emacs";
+        QT_QPA_PLATFORMTHEME = "qt6ct";
       };
       interactiveShellInit = ''
         _df_is_managed_ssh_host() {

nixos/home-manager.nix

@@ -152,6 +152,33 @@
 
     [Removed Associations]
   '';
+  qtctConfig = ''
+    [Appearance]
+    color_scheme_path=
+    custom_palette=false
+    icon_theme=Numix-Circle
+    standard_dialogs=default
+    style=Fusion
+
+    [Fonts]
+    fixed="Noto Sans,10,-1,5,50,0,0,0,0,0"
+    general="Noto Sans,10,-1,5,50,0,0,0,0,0"
+
+    [Interface]
+    activate_item_on_single_click=1
+    buttonbox_layout=0
+    cursor_flash_time=1000
+    dialog_buttons_have_icons=1
+    double_click_interval=400
+    gui_effects=@Invalid()
+    keyboard_scheme=2
+    menus_have_icons=true
+    show_shortcuts_in_context_menus=true
+    stylesheets=@Invalid()
+    toolbutton_style=4
+    underline_shortcut=1
+    wheel_scroll_lines=3
+  '';
 in {
   # Automatic garbage collection of old home-manager generations
   nix.gc = {
@@ -173,6 +200,8 @@ in {
       static_history = []
   '';
 
+  xdg.configFile."qt5ct/qt5ct.conf".text = qtctConfig;
+  xdg.configFile."qt6ct/qt6ct.conf".text = qtctConfig;
 
   xdg.configFile."zellij/config.kdl".source =
     config.lib.file.mkOutOfStoreSymlink