Generated Dagger factory won't compile if a module has an annotation that requires OptIn

[Egorand]

Seems to be a dupe of #488, but I'm bumping into it with Anvil 2.5.1 (Kotlin version is 2.1.0), so submitting a new report.

We've got the following annotation:

@RequiresOptIn(
  level = RequiresOptIn.Level.ERROR,
  message = "...",
)
@Retention(AnnotationRetention.BINARY)
@Target(
  AnnotationTarget.CLASS,
  AnnotationTarget.FUNCTION,
  AnnotationTarget.FIELD,
  AnnotationTarget.PROPERTY,
)
annotation class UnstableSyncValueMigrationApi

Which annotates a class:

@UnstableSyncValueMigrationApi
class DebugSyncValueMigrationBypass @Inject constructor() : SyncValueMigrationBypass

That's bound in a module:

@UnstableSyncValueMigrationApi
@Module
@ContributesTo(SandboxedScope::class)
abstract class SyncValueMigrationBypassModule {
  @Binds abstract fun bind(impl: DebugSyncValueMigrationBypass): SyncValueMigrationBypass
}

Anvil generates the following factory:

// Generated by Anvil.
// https://github.com/square/anvil
@file:Suppress(
  "DEPRECATION",
  "OPT_IN_USAGE",
  "OPT_IN_USAGE_ERROR",
)

package com.squareup.cash.`data`.featureflags.syncvalue

import dagger.`internal`.Factory
import kotlin.Suppress
import kotlin.jvm.JvmStatic

public object DebugSyncValueMigrationBypass_Factory : Factory<DebugSyncValueMigrationBypass> {
  override fun `get`(): DebugSyncValueMigrationBypass = newInstance()

  @JvmStatic
  public fun create(): DebugSyncValueMigrationBypass_Factory = this

  @JvmStatic
  public fun newInstance(): DebugSyncValueMigrationBypass = DebugSyncValueMigrationBypass()
}

Which fails to compile:

e: file:///.../DebugSyncValueMigrationBypass_Factory.kt:16:16 Base declaration of supertype 'Factory' needs opt-in. The declaration override must be annotated with '@com.squareup.cash.common.backend.featureflags.syncvalue.UnstableSyncValueMigrationApi' or '@OptIn(com.squareup.cash.common.backend.featureflags.syncvalue.UnstableSyncValueMigrationApi::class)'

The workaround I found is to change RequiresOptIn.Level to WARNING, which allows the compilation to go through, but is not what we ultimately want.

This happens in cash-android, so please feel free to reach out internally for more troubleshooting data!