Room + Ksp + Variants

build.gradle.kts

androidComponents {
    onVariants { variant ->
        afterEvaluate {
            tasks.named<KspTask>("ksp${variant.name.capitalize()}Kotlin").configure {
                options.add(
                    org.jetbrains.kotlin.gradle.plugin.SubpluginOption(
                        "apoption",
                        "room.schemaLocation=${project.layout.projectDirectory.dir("schemas-${variant.name}").asFile.path}"
                    )
                )
            }
        }
    }
}