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kotlinlang

is there a compiler-flag to turn the generated warning about a non-exhaustive `when` into an error? (i know i can turn  the `when` statements themselves  into expressions, but sometimes this gets forgotten)

You can just add `.let{}` at the end, to fake-use the result

as i said - i'm aware of that but i dont think its adequate

There's no compiler flag, as far as I know. However, if using external tools is an option for you, you may want to check this: <https://proandroiddev.com/kotlin-when-statement-when-expression-oh-my-or-how-we-created-our-custom-detekt-rule-6f27e80bedaf>

at leas tot should be easily possible to integrate detekt into our build pipeline. thank you!

Also you _could_ treat all warnings as errors with Werror compiler flag, but excluding warnings for this is not currently possible: <https://youtrack.jetbrains.com/issue/KT-24746>