buildscript { repositories { google() jcenter() } dependencies { classpath 'com.android.tools.build:gradle:4.1.3' def nav_version = "2.3.4" classpath "androidx.navigation:navigation-safe-args-gradle-plugin:$nav_version" } } allprojects { repositories { google() jcenter() mavenCentral() maven { url 'https://jitpack.io' } } } task clean(type: Delete) { delete rootProject.buildDir }