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kotlinlang

Embarrassing I don't know this, but if I want to use the newly stable Kotlin 1.4.0 explicit API mode with Android build.gradle, where would I put the block?
```kotlin.explicitApi()```

I would think it would be in `kotlinOptions`, but it doesn’t appear to be. :thinking_face:

I mean, worst case, I could set the command line option.

Ugh, I did this. Now, I'm getting `RedundantVisibilityModifier` all over the codebase. It seems that should be disabled for explicit API=strict.
```android {
    // ...
    kotlinOptions {
        // using explicit API mode to guarantee we only expose methods we intend
        freeCompilerArgs += "-Xexplicit-api=strict"
    }
}```

Maybe I need the new Kotlin 1.4.0 compiler plugin that hasn't been released yet.

So this works for me, but i’m not seeing any errors about implicit visibility:
```android {
  …
}

kotlin {
  explicitApi = Strict
  // or
  explicitApi()
}

dependencies {
  …```

<@U3M0FHPC0> Did you actually get this to work?

<https://github.com/square/anvil/pull/61>

I had to add the public modifier, otherwise there was a compilation error.

huh, my build is succeeding, no errors, even though there are definitely classes with no visibility modifiers

I got it to work with the freeCompilerArgs. Then when I built and ran my app, I got warnings which triggered warningsAsErrors in my build.

`freeCompilerArgs` works for me too. I wonder if the Kotlin DSL is broken.

i _almost_ agree with you, given how terrible gradle is

Ugh, kotlin thinks tests also need explicit visibility… that’s annoying

You can apply this option for non-test KotlinCompile task only.

If you enable it for all, then obviously it will also run for tests.

what’s the best way to filter test tasks out? this feels hacky:
```tasks.withType&lt;KotlinCompile&gt; {
  if (!name.contains("test", ignoreCase = true)) {
    kotlinOptions {```

<@U5L3FHYN5> yep looks like there’s a known issue about android projects: <https://youtrack.jetbrains.com/issue/KT-37652>. Fixed in 1.4.20, which seems more and more to be the _real_ 1.4 release :joy:

<https://chao2zhang.medium.com/explicit-api-mode-for-kotlin-on-android-b8264fdd76d1> I had the exact same hack lol