Is there any way to mark External classes as `@Stable` ?, I'm using MemoryCache.Key from Coil as a p...

# compose

[Shakil Karim]

Is there any way to mark External classes as @Stable ?, I'm using MemoryCache.Key from Coil as a parameter to Composable Function, but not sure if by default it's considered Stable.

[Shakil Karim]

cc @Colin White

[dimsuz]

I second this wish.

I have another use case: I have entity-only, kotlin-only android-free gradle module. Which contains data classes, and I don't want to make it depend on compose.ui.runtime artifact.

But when I use classes from this module and pass them into @Composable functions for rendering, I'd like to mark them as @Immutable to enable potential optimizations by Compose.

[dimsuz]

cc @jim (iirc we also had discussion along these lines, but not about "external" marking)

[Shakil Karim]

I think @Leland Richardson [G] mention it a while ago https://kotlinlang.slack.com/archives/CJLTWPH7S/p1599179070487900?thread_ts=1599170231.483800&cid=CJLTWPH7S