Hello, I get an error when trying to add `android...

# gradle

[Paulius Ruminas]

Hello,

I get an error when trying to add androidx.navigation.safeargs.kotlin plugin to my project: Caused by: org.gradle.api.GradleException: androidx.navigation.safeargs.kotlin plugin must be used with kotlin plugin.

settings.gradle.kts:

pluginManagement {
    repositories {
        gradlePluginPortal()
        jcenter()
        google()
        mavenCentral()
    }
    resolutionStrategy {
        eachPlugin {
            when (requested.id.namespace) {
                "org.jetbrains.kotlin" -> useModule("org.jetbrains.kotlin:kotlin-gradle-plugin:${Version.Kotlin}")
            }

            when (requested.id.id) {
                "kotlinx-serialization" -> useModule("org.jetbrains.kotlin:kotlin-serialization:${Version.Kotlin}")
                "com.android.application" -> useModule("com.android.tools.build:gradle:3.4.1")
                "androidx.navigation.safeargs.kotlin" -> useModule("androidx.navigation:navigation-safe-args-gradle-plugin:${Version.NavigationKtx}")
            }
        }
    }
}

// ...

build.gradle.kts:

plugins {
    id("com.android.application")
    kotlin("android")
    kotlin("android.extensions")
    kotlin("kapt")
    id("androidx.navigation.safeargs.kotlin")
}

// ...

[mkobit]

maybe that plugin requires you to also apply the kotlin plugin?

plugins {
   kotlin("jvm") version "1.3.40"
  // ....
}

[Paulius Ruminas]

You can not have both kotlin("jvm") and kotlin("android")

* What went wrong:
An exception occurred applying plugin request [id: 'org.jetbrains.kotlin.android', version: '1.3.40']
> Failed to apply plugin [id 'org.jetbrains.kotlin.android']
   > Cannot add extension with name 'kotlin', as there is an extension already registered with that name.

[Paulius Ruminas]

If I remove the navigation plugin I get:

* What went wrong:
com/android/build/gradle/BaseExtension

[Paulius Ruminas]

It's a bug https://discuss.kotlinlang.org/t/kotlin-plugin-asks-to-be-added-to-the-root-project-as-well-but-doing-so-makes-the-build-crash/12792/4