How to control type variables/parameters display in function signatures?

[AllanChain]

With a function like

def f[T: BaseClass](x: T): ...

The rendered signature looks like

def f(x: long.module.name.T): ...

Note that the [T: BaseClass] disappears and T is resolved to a long full name.

Is there a way to:

1. Keep [T: BaseClass]
2. Avoid resolving T to the full name?