This is the type defined from c code import by importC:

struct A {
   int count;
   int[] i;
}

This kind data need to be init as const to avoid runtime cost, and need to be done from D code.

how can I do this ?

To put code into D source, I can use "-i=package" to automatically import the only need part without rebuild it, and avoid the problem of importC path search. (and there is type wrapper inside D code).

I can fix it with a template type, the cost is very slow build time. (because there is a lot diff auto generate type)

Any suggestions how to handle this fast and simple ?