Hiding constructors of data type

Question

When importing some data type, it is necessary to put (..) for constructors to be imported.

Is it possible to prevent exporting constructors of some data type, even when that data type is exported?

Answer 1

Yes, just use the same syntax when exporting them - Foo() just to export the type, Foo(..) to export the type and all constructors, and Foo(FooC1,FooC2) to just export the named constructors of the type.