added colorscheme default option

config/default.nix

@@ -1,4 +1,4 @@
-{ pkgs, ... }: {
+{ pkgs, opts, ... }: {
   # Import all your configuration modules here
   imports = [ ./bufferline.nix ];
 
@@ -185,5 +185,5 @@
 
   ];
 
-  colorscheme = "pywal";
+  colorscheme = if opts.pywal then "pywal" else "tokyonight-storm";
 }

flake.nix

@@ -22,25 +22,36 @@
         let
           nixvimLib = nixvim.lib.${system};
           nixvim' = nixvim.legacyPackages.${system};
-          nixvimModule = {
+          nixvimModule = { opts }: {
             inherit pkgs;
             module = import ./config; # import the module directly
             # You can use `extraSpecialArgs` to pass additional arguments to your module files
             extraSpecialArgs = {
               inherit pkgs;
+              inherit opts;
             };
           };
-          nvim = nixvim'.makeNixvimWithModule nixvimModule;
+          nvim = { opts }: nixvim'.makeNixvimWithModule (nixvimModule { inherit opts; });
         in
         {
           checks = {
             # Run `nix flake check .` to verify that your config is not broken
-            default = nixvimLib.check.mkTestDerivationFromNixvimModule nixvimModule;
+            default = nixvimLib.check.mkTestDerivationFromNixvimModule (nixvimModule { opts = { pywal = false; }; });
           };
 
           packages = {
             # Lets you run `nix run .` to start nixvim
-            default = nvim;
+            default = nvim { 
+                opts = {
+                    pywal = false;
+                };
+            };
+
+            pywal = nvim {
+                opts = {
+                    pywal = true;
+                };
+            };
           };
         };
     };