NoSuchMethodError: getNOT_NULL_ANNOTATIONS() when using KSP for Hilt – Possible Version Incompatibility Issue

[tungnk123]

Hi Dagger Hilt Team,

I am encountering an issue when switching Hilt’s annotation processing from KAPT to KSP in my project. My setup uses KSP for Room, and I attempted to also use KSP for Hilt’s compiler by replacing:

kapt(libs.hilt.android.compiler)

with

ksp(libs.hilt.android.compiler)

However, this change causes the build to fail with the following error during KSP processing:

> Task :app:kspDebugKotlin
e: java.lang.NoSuchMethodError: 'java.util.List org.jetbrains.kotlin.load.java.JvmAnnotationNamesKt.getNOT_NULL_ANNOTATIONS()'
    at com.google.devtools.ksp.symbol.impl.java.KSTypeReferenceJavaImpl.resolve(KSTypeReferenceJavaImpl.kt:134)
    at dagger.spi.internal.shaded.androidx.room.compiler.processing.ksp.KspTypeElement$superInterfaces$2$1.invoke(KspTypeElement.kt:123)
    at dagger.spi.internal.shaded.androidx.room.compiler.processing.ksp.KspTypeElement$superInterfaces$2$1.invoke(KspTypeElement.kt:122)
    ...

It appears that a required method (getNOT_NULL_ANNOTATIONS()) is missing from the Kotlin runtime, which suggests a potential version incompatibility between the following components:

• Android Gradle Plugin (AGP)
• Kotlin
• Dagger Hilt (and Hilt Android Compiler)
• KSP

Project Configuration:

• ViewModel & Application:
  I have a minimal MainViewModel annotated with @HiltViewModel:

  package com.tungnk123.orpheus.ui
  
  import androidx.lifecycle.ViewModel
  import dagger.hilt.android.lifecycle.HiltViewModel
  import javax.inject.Inject
  
  @HiltViewModel
  class MainViewModel @Inject constructor() : ViewModel() { }

  My Application class is annotated with @HiltAndroidApp:

  package com.tungnk123.orpheus
  
  import android.app.Application
  import dagger.hilt.android.HiltAndroidApp
  
  @HiltAndroidApp
  class OrpheusApplication : Application() { }

• Gradle Configuration:
  In my module’s build.gradle.kts, I use both KAPT and KSP plugins:

  plugins {
      alias(libs.plugins.android.application)
      alias(libs.plugins.kotlin.android)
      alias(libs.plugins.kotlin.compose)
      id("dagger.hilt.android.plugin")
      id("org.jetbrains.kotlin.plugin.serialization")
      id("com.google.devtools.ksp")
      id("org.jetbrains.kotlin.kapt")
  }
  
  dependencies {
      // Dagger Hilt
      implementation(libs.hilt.android)
      // Attempting to use KSP for Hilt’s annotation processing:
      ksp(libs.hilt.android.compiler)
      
      // Room dependencies (using KSP):
      implementation(libs.androidx.room.runtime)
      ksp(libs.androidx.room.compiler)
      implementation(libs.androidx.room.ktx)
      
      // Other dependencies...
  }
  
  kapt {
      correctErrorTypes = true
      useBuildCache = false
  }

• Versions (from my version catalog):

  [versions]
  hiltAndroidCompiler = "2.51.1"
  hiltAndroid = "2.55"
  kotlin = "2.0.0"
  roomRuntime = "2.6.1"
  agp = "8.8.0"
  
  // ... other versions as defined in the catalog

Thank you for your time and assistance!