I have a processor that creates KotlinPoet `TypeNa...

# ksp

[Forrest Pangborn]

I have a processor that creates KotlinPoet TypeName instances from KType values, using the asTypeName() extension to KType provided by KotlinPoet.

Looks like the implementation of asTypeName() relies on kotlin-reflect (the typeParameters property on KClass).

In KSP1, using asTypeName() like this works but with KSP2 I’m getting an exception:

Caused by: kotlin.jvm.KotlinReflectionNotSupportedError: Kotlin reflection implementation is not found at runtime. Make sure you have kotlin-reflect.jar in the classpath
    at kotlin.jvm.internal.ClassReference.error(ClassReference.kt:88)
    at kotlin.jvm.internal.ClassReference.getTypeParameters(ClassReference.kt:38)
    at com.squareup.kotlinpoet.ParameterizedTypeName$Companion.get$kotlinpoet(ParameterizedTypeName.kt:236)
    at com.squareup.kotlinpoet.ParameterizedTypeNames.asTypeName(ParameterizedTypeName.kt:275)

My processor already includes kotlin-reflect as an implementation dependency – and I've tried adding it for the consumer of the processor too, but same failure.

Running with latest KSP version but in legacy mode (via useKsp2 = false) works fine as well – so seems definitely an issue with KSP2.

Anyone have any suggestions on other things I can try?

[sbelloz]

Same problem here when updating ksp 2.1.20-2.0.0

[ade]

Did you find a solution to this?

[ade]

Here's some info for other potential readers... you can work around it by actually not using reflection:
https://square.github.io/kotlinpoet/kotlin-reflect/