Support for Kotlin 1.5.20

With Kotlin 1.5.20-RC I get this error.

Works with Kotlin 1.5.10.

Dagger version 2.37

/Users/username/projects/myproject/appname/build/tmp/kapt3/stubs/devAppnameDebug/de/company/appname/ApplicationMain.java:47: error: [Hilt]
public final class ApplicationMain extends company.appname.ApplicationBase {
             ^
  Expected @HiltAndroidApp to have a value. Did you forget to apply the Gradle Plugin? (dagger.hilt.android.plugin)
  See https://dagger.dev/hilt/gradle-setup.html
  [Hilt] Processing did not complete. See error above for details.

/Users/username/projects/myproject/appname/build/tmp/kapt3/stubs/devAppnameDebug/de/company/appname/ui/SecondFragment.java:43: error: [Hilt]
public final class SecondFragment extends company.appname.ui.base.BaseFragment {
             ^
  Expected @AndroidEntryPoint to have a value. Did you forget to apply the Gradle Plugin? (dagger.hilt.android.plugin)
  See https://dagger.dev/hilt/gradle-setup.html
  [Hilt] Processing did not complete. See error above for details.

[bcorso]

This sounds like a bug in the kotlin/kapt plugin rather than Hilt. In particular, javaCompilerOptions.annotationProcessorOptions are just getting ignored in general, as mentioned in https://github.com/google/dagger/issues/2684#issuecomment-860175674. This ends up causing Hilt to fail because the Hilt Gradle plugin sets these options in HiltGradlePlugin.kt.

FWIW, it looks like the processing options set through kapt.javacOptions do still work, so as a workaround you can set the options manually:

kapt {
    javacOptions {
        // These options are normally set automatically via the Hilt Gradle plugin, but we
        // set them manually to workaround a bug in the Kotlin 1.5.20
        option("-Adagger.fastInit=ENABLED")
        option("-Adagger.hilt.android.internal.disableAndroidSuperclassValidation=true")
    }
}

[bcorso]

I’ve filed a bug with kotlin here: https://youtrack.jetbrains.com/issue/KT-47416