when looking for a custom argument converter look at base types too

lostmsu · lostmsu · commit 6cd7bd449fa1 · 2020-01-31T12:03:37.000-08:00
diff --git a/src/runtime/methodbinder.cs b/src/runtime/methodbinder.cs
@@ -203,11 +203,11 @@ static PyArgConverterAttribute TryGetArgConverter(Type type) {
 
             return ArgConverterCache.GetOrAdd(type, declaringType =>
                 declaringType
-                    .GetCustomAttributes(typeof(PyArgConverterAttribute), inherit: false)
+                    .GetCustomAttributes(typeof(PyArgConverterAttribute), inherit: true)
                     .OfType<PyArgConverterAttribute>()
                     .SingleOrDefault()
                 ?? declaringType.Assembly
-                    .GetCustomAttributes(typeof(PyArgConverterAttribute), inherit: false)
+                    .GetCustomAttributes(typeof(PyArgConverterAttribute), inherit: true)
                     .OfType<PyArgConverterAttribute>()
                     .SingleOrDefault()
             );
