Interfaces in custom types for action handlers

[charklewis]

I saw on the Hasura docs is says It is currently not possible to define Interfaces and Union types as custom types. Are there any plans to support this? About half of my action handlers would be using this feature and at the moment I have to duplicate the types (which isn't scaling very well).

[seanonthenet]

There is a issue out for union (and interface) types: #2311

And a related one about allowing the use of existing types: #5001

I also hope these get prioritised.

[dsandip]

@charklewis Could you please upvote/+1 the issues shared by @seanonthenet so help prioritise these issues higher?