Abstract over abstract casting

[kevinresol]

Typing C in the following code fails with You can only declare from/to with compatible types.
While B is fine.

abstract A(Array<Float>) to Array<Float>{}
abstract B(Array<A>) to Array<Array<Float>> {}
abstract C(Array<B>) to Array<Array<Array<Float>>> {}

[Simn]

I'm not sure if that should work or not.

[ciscoheat]

I just ran into the same problem on 4.0 preview 4. Will this be fixed, or are there any workarounds?

[kevinresol]

I think you can work around it with @:from/to and unsafe cast

[ciscoheat]

I managed to, by removing an implicit to cast in the abstract class definition!