diff --git a/games/nxengine/files/patch-libc++7 b/games/nxengine/files/patch-libc++7
new file mode 100644
index 000000000000..f50b04c91d75
--- /dev/null
+++ b/games/nxengine/files/patch-libc++7
@@ -0,0 +1,63 @@
+https://github.com/nlohmann/json/commit/8165707990e4
+
+--- src/common/json.hpp.orig	2018-04-09 20:44:59 UTC
++++ src/common/json.hpp
+@@ -840,6 +840,16 @@ struct is_compatible_object_type_impl<true, RealType, 
+         std::is_constructible<typename RealType::mapped_type, typename CompatibleObjectType::mapped_type>::value;
+ };
+ 
++template<bool B, class RealType, class CompatibleStringType>
++struct is_compatible_string_type_impl : std::false_type {};
++
++template<class RealType, class CompatibleStringType>
++struct is_compatible_string_type_impl<true, RealType, CompatibleStringType>
++{
++    static constexpr auto value =
++        std::is_same<typename RealType::value_type, typename CompatibleStringType::value_type>::value;
++};
++
+ template<class BasicJsonType, class CompatibleObjectType>
+ struct is_compatible_object_type
+ {
+@@ -850,6 +860,15 @@ struct is_compatible_object_type
+                                   typename BasicJsonType::object_t, CompatibleObjectType >::value;
+ };
+ 
++template<class BasicJsonType, class CompatibleStringType>
++struct is_compatible_string_type
++{
++    static auto constexpr value = is_compatible_string_type_impl <
++                                  conjunction<negation<std::is_same<void, CompatibleStringType>>,
++                                  has_value_type<CompatibleStringType>>::value,
++                                  typename BasicJsonType::string_t, CompatibleStringType >::value;
++};
++
+ template<typename BasicJsonType, typename T>
+ struct is_basic_json_nested_type
+ {
+@@ -1132,6 +1151,25 @@ void from_json(const BasicJsonType& j, typename BasicJ
+     {
+         JSON_THROW(type_error::create(302, "type must be string, but is " + std::string(j.type_name())));
+     }
++    s = *j.template get_ptr<const typename BasicJsonType::string_t*>();
++}
++
++template <
++    typename BasicJsonType, typename CompatibleStringType,
++    enable_if_t <
++        is_compatible_string_type<BasicJsonType, CompatibleStringType>::value and
++        not std::is_same<typename BasicJsonType::string_t,
++                         CompatibleStringType>::value and
++        std::is_constructible <
++            BasicJsonType, typename CompatibleStringType::value_type >::value,
++        int > = 0 >
++void from_json(const BasicJsonType& j, CompatibleStringType& s)
++{
++    if (JSON_UNLIKELY(not j.is_string()))
++    {
++        JSON_THROW(type_error::create(302, "type must be string, but is " + std::string(j.type_name())));
++    }
++
+     s = *j.template get_ptr<const typename BasicJsonType::string_t*>();
+ }
+