trying to use `sealed interface`, Idea's popup say...

# getting-started

[elect]

trying to use sealed interface, Idea's popup says

The feature "sealed interfaces" is only available since language version 1.5

then I click it and in my build.gradle.kts it adds

val compileKotlin: KotlinCompile by tasks
compileKotlin.kotlinOptions {
    languageVersion = "1.5"
}

but sealed is still marked as error and compiling fails:

> Task buildSrccompileKotlin FAILED

3 actionable tasks: 1 executed, 2 up-to-date

e: /home/elect/IdeaProjects/vkk/buildSrc/src/main/kotlin/vkk/parsing.kt: (79, 1): The feature "sealed interfaces" is only available since language version 1.5

[ephemient]

I see buildSrc, I assume this is using the kotlin-dsl plugin?

[ephemient]

it forces languageVersion = "1.4" to maintain compatibility with existing Gradle build scripts

[ephemient]

https://github.com/gradle/gradle/blob/master/subprojects/kotlin-dsl-plugins/src/main/kotlin/org/gradle/kotlin/dsl/plugins/dsl/KotlinDslCompilerPlugins.kt#L45-L53

[elect]

yes, indeed

[elect]

well, that explains it
thanks!