Updated to avoid IFD

modules/home/programs/kitty/default.nix

@@ -16,7 +16,11 @@ in {
   config = mkIf cfg.enable {
     programs.kitty = {
       enable = true;
-      catppuccin.enable = true;
+      # Set theme with `extraConfig` instead of `theme` to avoid IFD.
+      # See here: https://github.com/nix-community/home-manager/issues/5110
+      extraConfig = ''
+        include ${pkgs.kitty-themes}/share/kitty-themes/themes/Catppuccin-Mocha.conf
+      '';
       font = {
         size = 12;
         package = pkgs.nerdfonts.override {fonts = ["Hack"];};

modules/home/programs/waybar/default.nix

@@ -20,13 +20,13 @@ in {
   };
 
   config = mkIf cfg.enable {
+    xdg.configFile."waybar/catppuccin.css".source = "${pkgs.aa.catppuccin-waybar}/catppuccin.css";
+
     programs.waybar = {
       enable = true;
       systemd.enable = true;
 
-      style =
+      style = builtins.readFile ./waybar_style.css;
-        builtins.readFile "${pkgs.aa.catppuccin-waybar}/catppuccin.css"
-        + builtins.readFile ./waybar_style.css;
 
       settings = [
         {

modules/home/programs/waybar/waybar_style.css

@@ -1,3 +1,5 @@
+@import "./catppuccin.css";
+
 * {
     border: none;
     font-family: Hack Nerd Font, sans-serif;

modules/home/services/swaync/default.nix

@@ -21,7 +21,7 @@ in {
       settings = {
         widgets = ["title" "dnd" "notifications" "mpris"];
       };
-      style = builtins.readFile "${pkgs.aa.catppuccin-swaync}/catppuccin.css";
+      style = "${pkgs.aa.catppuccin-swaync}/catppuccin.css";
     };
   };
 }