mod: adjust flake to add new config

flake.nix

@@ -213,6 +213,32 @@
       ];
     };
 
+    # Discord bot server
+    nixosConfigurations."estinien" = nixpkgs.lib.nixosSystem {
+      system = "x86_64-linux";
+      specialArgs = {
+        inherit userName userEmail;
+        hostname = "estinien";
+        role = "server";
+      };
+      modules = [
+        myOverlays
+        ./modules/common
+        ./modules/machine/estinien
+
+        home-manager.nixosModules.home-manager
+        {
+          home-manager.useGlobalPkgs = true;
+          home-manager.useUserPackages = true;
+          home-manager.extraSpecialArgs = extraSpecialArgs // { isNixOS = true; role = "server"; };
+          home-manager.backupFileExtension = "bak";
+          home-manager.users.${userName}.imports = [
+            ./home
+          ];
+        }
+      ];
+    };
+
     # generic non-NixOS Linux machine
     homeConfigurations."generic" = let
       hostname = builtins.getEnv "HOSTNAME";