ios-sdk-pkgs: Init from iOS SDK from XCode

lib/systems/default.nix

@@ -44,6 +44,8 @@ rec {
       };
       # Misc boolean options
       useAndroidPrebuilt = false;
+      useiOSPrebuilt = false;
+      isiPhoneSimulator = false;
     } // mapAttrs (n: v: v final.parsed) inspect.predicates
       // args;
   in assert final.useAndroidPrebuilt -> final.isAndroid;