Error: template instance `Reflect!(type)` cannot use local `type` as parameter to non-global template `Reflect(Ts...)()`

[Alex via Digitalmars-d-learn]

Error: template instance `Reflect!(type)` cannot use local `type` 
as parameter to non-global template `Reflect(Ts...)()`

mixin(`import `~moduleName!(T)~`;`);    
mixin(`alias X = T.`~name~`;`);                 
super.Reflect!(X);
I realize X is local but I'm trying to figure out why it can't be 
passed to a "non-global" template.