I'm trying to debug why Moshi doesn't work with Kotlin + ProGuard. The issue I'm seeing is that when ProGuard is enabled the call

rawType.kotlin.primaryConstructor

returns

null

. What sorts of things do I need to keep in order for kotlin-reflect to be able to find the primary constructor of a class at runtime? Just keeping the

@Metadata

annotation methods (as the library suggests) is not enough. Keeping all kotlin classes (

-keep class kotlin.** { *; }

) does work, but I'd rather just keep what I need.

Try keeping only the entry point to kotlin-reflect and its dependencies:

-keep class kotlin.reflect.jvm.internal.ReflectionFactoryImpl { *; }

Didn't work 😞. I also just tried

-keep class kotlin.reflect.** { *; }

and that didn't fix it either, apparently I need to keep something outside of kotlin-reflect 🤔