Currently it's possible to specify custom directives for fields. They are propagated to the final schema, but only for type fields. We need a way how to specify custom directives that need to be used for input fields (eg. for validation purposes).

Example:

// model.graphql type User { email: String! @validation(email: true) age: Int @validation(min: 0) } // gen/schema.graphql input UserCreateInput { id: ID email: String! @validation(email: true) age: Int @validation(min: 0) } input UserUpdateInput { email: String @validation(email: true) age: Int @validation(min: 0) } 

The question is how to choose which directives propagate to type fields and which to create/update input fields (I'm not sure if it's ok to propagate them all).