build.gradle

// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
    ext.kotlin_version = '1.4.21'
    repositories {
        google()
        jcenter()
        mavenCentral()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:4.2.0-beta03'

        def nav_version = "2.3.0-beta01"
        classpath "androidx.navigation:navigation-safe-args-gradle-plugin:$nav_version"
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files

        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
    }
}

allprojects {
    repositories {
        google()
        jcenter()
        mavenCentral()
        maven { url 'https://jitpack.io' }
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}