I'm trying to get my `Application` class to extend a `fun interface ImageLoaderFactory` (from Coil)....

# android

[Lukasz Kalnik]

I'm trying to get my Application class to extend a fun interface ImageLoaderFactory (from Coil). However I get the following error:

Inheritance from an interface with '@JvmDefault' members is only allowed with -Xjvm-default option

I have kotlinOptions.jvmTarget = "11".

[gildor]

You should pass this option to compiler, it's not enabled by default

[Lukasz Kalnik]

Thank you!
Requiring this flag is unexpected though, because the Coil interface ImageLoaderFactory does not mark its method as @JvmDefault. In fact it doesn't have a default method implementation at all:
https://github.com/coil-kt/coil/blob/main/coil-singleton/src/main/java/coil/ImageLoaderFactory.kt

[ephemient]

https://github.com/coil-kt/coil/blob/main/buildSrc/src/main/kotlin/Projects.kt#L65 coil applies it across their whole codebase

[Lukasz Kalnik]

That makes sense, thank you.