Template arguments produce unidentified identifier

[Rufus Smith via Digitalmars-d-learn]

I have complex template that uses a mixin to solve some problems. 
The mixin produces the error.  I thought template's were added in 
to the scope of the call? I guess the mixin is inserted before 
this happens. That isn't good ;/

Here is one place the error happens

	mixin("alias Func = extern("~functionLinkage!Q~") 
"~(ReturnType!Q).stringof~" 
function"~(Erase!(Parameters!Q)).stringof~";");

The mixin is required to get the proper linkage, as no other 
method has been found to do that. Everything works with built in 
types.

I saw somewhere that vibe.d had some way around this but the 
links are dead.