use ctp-nix for gtk theme

flake.lock

@@ -22,6 +22,21 @@
         "type": "github"
       }
     },
+    "catppuccin": {
+      "locked": {
+        "lastModified": 1702771919,
+        "narHash": "sha256-l6zkit3WPXuukWrQDpaNVNEQ2Y0lq1K+7OQmvtqFIJU=",
+        "owner": "Stonks3141",
+        "repo": "ctp-nix",
+        "rev": "4a76ba2815b6db301597630d14e4e40f4fb5fb0f",
+        "type": "github"
+      },
+      "original": {
+        "owner": "Stonks3141",
+        "repo": "ctp-nix",
+        "type": "github"
+      }
+    },
     "crane": {
       "inputs": {
         "nixpkgs": [
@@ -290,6 +305,7 @@
     "root": {
       "inputs": {
         "agenix": "agenix",
+        "catppuccin": "catppuccin",
         "flake-parts": "flake-parts",
         "home-manager": "home-manager_2",
         "lanzaboote": "lanzaboote",

flake.nix

@@ -15,6 +15,8 @@
       inputs.nixpkgs.follows = "nixpkgs";
     };
 
+    catppuccin.url = "github:Stonks3141/ctp-nix";
+
     lanzaboote = {
       url = "github:nix-community/lanzaboote";
       inputs = {

systems/default.nix

@@ -32,6 +32,7 @@
       ./desktop.nix
       lanzaboote.nixosModules.lanzaboote
       home-manager.nixosModules.home-manager
+      catppuccin.nixosModules.catppuccin
     ]
     ++ nixos;
 in {

systems/desktop.nix

@@ -3,6 +3,7 @@
   pkgs,
   config,
   agenix,
+  catppuccin,
   ...
 }: let
   username = "leo";
@@ -120,6 +121,10 @@ in {
   };
 
   hm = {
+    imports = [
+      catppuccin.homeManagerModules.catppuccin
+    ];
+
     home.packages = with pkgs; let
       inherit (pkgs.stdenv.hostPlatform) system;
     in [
@@ -143,11 +148,6 @@ in {
       sccache
       shotcut
       vesktop
-
-      (catppuccin-gtk.override {
-        variant = "macchiato";
-        accents = ["sky" "sapphire"];
-      })
     ];
 
     services = {
@@ -156,6 +156,15 @@ in {
         pinentryFlavor = "gnome3";
       };
     };
+
+    gtk = {
+      enable = true;
+      catppuccin = {
+        enable = true;
+        flavour = "macchiato";
+        accent = "sky";
+      };
+    };
   };
 
   nixpkgs = {