Are there any plans to support module-wide sealed classes?

# announcements

[Karlo Lozovina]

Are there any plans to support module-wide sealed classes?

[mkrussel]

In 1.5. You can enable it experimentally in 1.4.

https://blog.jetbrains.com/kotlin/2021/02/new-language-features-preview-in-kotlin-1-4-30/#sealed-interfaces

[mkrussel]

I guess these are still restricted to same package.

[mkrussel]

so maybe not what you wanted

[Karlo Lozovina]

yup, package-wide works great, it's a welcome addition in some cases but module wide would come in handy sometimes too, or maybe like Java does it, with specifying all the sub classes..

[dmitriy.novozhilov]

What is your usecase for module-wide sealed inheritors?

or maybe like Java does it, with specifying all the sub classes

This never happens because of at least two reasons:
- too much useless verbosity
- expect sealed classes can't work in such scheme, because it's allowed to add new inheritors only for actual sealed class

[Karlo Lozovina]

it was mostly a very large class hierarchy with lots of code in each class... having everything in one package is definitely doable, but it would be maybe a bit better to be able to organise it in a package hierarchy

being able to have sealed classes in separate files does the job in 99% of the cases...