home/catppuccin+nixos/nerdfonts: enable gtk-related stuff

modules/programs/catppuccin.nix

@@ -48,5 +48,10 @@
       enable = true;
       style.name = "kvantum";
     };
+
+    gtk = {
+      enable = true;
+      colorScheme = "dark";
+    };
   };
 }

modules/system-settings/nerdfonts.nix

@@ -8,4 +8,8 @@
       fontDir.enable = true;
     };
   };
+
+  flake.modules.homeManager.nerdfonts = {
+    gtk.font.name = "JetBrainsMono";
+  };
 }