kohana/core — comment on commit 9ef1896fa04e1f94d2bea9def35cf5584fb8d6c6
File: classes/Kohana/Core.php line 331
By kiall:

For a while during the 3.1 cycle - I had nearly exactly that.

~~~
class Config {
// My 100% replaced, but API compatible, config class.
}
~~~

That ability to do that is a feature of Kohana.