Update flake.nix

flake.nix

@@ -71,17 +71,23 @@
           # kernel for serial console access to work well
           boot.kernelParams = [ "console=ttyS2,1500000" ];       
           hardware.deviceTree.name = "rockchip/rk3568-odroid-m1.dtb";
-          
+        
+          # Turn on flakes.
+          ##nix.package = pkgs.nixVersions.stable;
+          nix.extraOptions = ''
+            experimental-features = nix-command flakes
+          '';
+
           # includes this flake in the live iso : "/etc/nixcfg"
-          environment.etc.nixcfg.source =
-            builtins.filterSource
-              (path: type:
-                baseNameOf path
-                != ".git"
-                && type != "symlink"
-                && !(pkgs.lib.hasSuffix ".qcow2" path)
-                && baseNameOf path != "secrets")
-              ../.;
+          #environment.etc.nixcfg.source =
+          #  builtins.filterSource
+          #    (path: type:
+          #      baseNameOf path
+          #      != ".git"
+          #      && type != "symlink"
+          #      && !(pkgs.lib.hasSuffix ".qcow2" path)
+          #      && baseNameOf path != "secrets")
+          #    ../.;
 
 
       services.openssh = {