Derive Generic for MediaType

[kahlil29]

Is it possible to derive the Generic typeclass for the MediaType type located in
Network.HTTP.Media.MediaType ?

I'm using the type to represent something in a Dhall config and need to have an Interpret instance, so that's why I would need it to derive Generic.

[endgame]

One problem with doing this is that a Generic instance lets you get around abstraction boundaries, and the MediaType type is declared in an Internal module and its constructors are not exposed in the public interface.