Cannot define recursive bound on associated type of an interface

I have a need to define something like the following:
```
interface A T => A a where
  T : Type
 ```
I have tried it with version 1.3.4 and it says it does not see T in scope.

Can I define it in idris?
___
If I were to define it in haskell, I would go like so:
```
class A (T b) => A b where
  type T b :: *
```
Need an equivalent in idris tho :3