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kotlinlang

I notice sometimes when people use libraries that have annotation processing like Room, they have both `kapt "..."` and `annotationProcessor "..."`. What is the reason for needing both?

Ideally, annotation processors which are dealing with Java sources only wouldn't be part of the kapt. For example, there is no use case for applying @AutoValue on top of Kotlin classes. But that is not supported, at the moment everything has to be a kapt processor in mixed codebase suffering from performance (kapt disables incremental compilation)