Redeclaration errors for @Component when ksp is used for common and target source sets

[eygraber]

I have a component written in commonMain:

@Component
abstract class AppComponent(
  @Component protected val platformComponent: PlatformComponent
) {
  companion object
}

I also have another component written in commonMain as an expect class:

expect abstract class PlatformComponent {
  companion object
}

and an actual class in my targets (e.g. android):

@Component
actual abstract class PlatformComponent(
  @get:Provides val context: AppContext
) {
  actual companion object
}

I set up ksp to run for common and each of my targets:

kotlin.sourceSets.commonMain {
  kotlin.srcDir("build/generated/ksp/metadata/commonMain/kotlin")
}

kotlin.targets.configureEach {
  kotlin.configureKsp(name)
}

fun KotlinSourceSetContainer.configureKsp(targetName: String) {
  runCatching {
    dependencies {
      add("ksp${targetName.capitalized()}", libs.kotlinInject.compiler)
    }

    sourceSets.configureEach {
      kotlin.srcDir("build/generated/ksp/$targetName/$name/kotlin")
    }
  }
}

dependencies {
  add("kspCommonMainMetadata", libs.kotlinInject.compiler)

  tasks.withType<KotlinCompile>().configureEach {
    if(name != "kspCommonMainKotlinMetadata") {
      dependsOn("kspCommonMainKotlinMetadata")
    }
  }
}

And I get the following errors:

e: /home/eli/workspace/galgal/core/build/generated/ksp/android/androidDebug/kotlin/com/eygraber/galgal/core/components/InjectAppComponent.kt: (9, 14): Redeclaration: InjectAppComponent

e: /home/eli/workspace/galgal/core/build/generated/ksp/metadata/commonMain/kotlin/com/eygraber/galgal/core/components/InjectAppComponent.kt: (6, 14): Redeclaration: InjectAppComponent

[eygraber]

Here's a repro - https://github.com/eygraber/kotlin-inject/tree/194

[eygraber]

Looks like this is a ksp issue - google/ksp#965

[eygraber]

Actually looks like there is a hacky workaround mentioned in google/ksp#965

I'll put up a PR with it.

[eygraber]

Closing again, since waiting for ksp to better support this is the better option.