Oh, I think I get it. `Vec3Var` in my original post is just a poor...

Hm, I don't understand what your code does. So Vec3Var!S yields the tuple...

...it would be better to initialize the template and emit it when required instead.

The...

...ok
  assert(is(typeof(trio) == Vec3Var!S));
}

template staticMapTrio(alias fun, args...) {
  alias staticMapTrio = AliasSeq...

...ok
  assert(is(typeof(trio) == Vec3Var!S));
}

template staticMapTrio(alias fun, args...) {
  alias staticMapTrio = AliasSeq...

Just want to say, I'm super excited to see this possibly getting solved!

Thanks...

...a template declaration.

The potentional is likely the capability of original IFTI for alias template...

...L58


The user uses that engine mixin template, which will add the engine entry point...

...template IMPLEMENT_REFCOUNT() {
  override uint addRef()  { return 1; }
  override uint release() { return 1; }
}

mixin template...

...a bit crazy on template usage. The code is:

```d
package template DECLARE_HANDLE(string...