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kotlinlang

I use features that require `ExperimentalStdlibApi`, and I add it via Gradle plugin that adds `-Xopt-in=kotlin.ExperimentalStdlibApi` to `kotlinOptions.freeCompilerArgs`. Building with Gradle from the command line shows no errors, but Intellij keeps underlining functions (like `buildList`) and saying that I need to add the annotation. Using the latest Kotlin 1.6 preview plugin. Any ideas what to try to fix it?

It doesn't even underline those buildLists as errors until I open the file... not even after building the project. Weird...

Interesting, now Intellij no longer understands `JvmInline` annotations...

Switched to Gradle Kotlin plugin 1.6 ... now buildList is just unresolved reference :smile: from bad to worse, it seems :smile:

It seems everything I do inside the Gradle buildSrc plugin (enable experimental apis, add serialization, etc...) Intellij fails to understand, now basically nothing works

And now I'm basically using Intellij as a slow Notepad :rolling_on_the_floor_laughing:

<https://kotlinlang.org/docs/mpp-dsl-reference.html#language-settings>

what happens if you use `languageSettings`? Maybe the IDE has better support for the gradle DSL instead of compiler args?

I think docs are outdated though: the `useExperimentalAnnotation` method is deprecated and replaced with `optIn`

<@U9EFM2M0V> thanks for the suggestion, here is the complete configuration block (I'm not using multiplatform):

```tasks {
    compileKotlin {
        kotlinOptions.languageVersion = "1.5"
        kotlinOptions.apiVersion = "1.5"
        kotlinOptions.jvmTarget = "16"
        kotlinOptions.freeCompilerArgs = listOf(
            "-Xopt-in=kotlin.ExperimentalStdlibApi",
            "-Xopt-in=kotlin.time.ExperimentalTime",
            "-Xopt-in=kotlin.contracts.ExperimentalContracts",
        )
    }
}```
It's not EAP, I'm using 2021.2.3 ... I'll try to reproduce it later on a minimal example