build.gradle

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    ext.kotlin_version = '1.4.10'
    repositories {
        // don't add anything here until you read to the bottom of this bracket
        google()
        jcenter()
        mavenCentral()
        maven { url 'https://jitpack.io' }
	// WARNING WARNING WARNING
	// you are about to add here a repository which provides some library for the Android app
	// don't do that. add that repository to app/build.gradle
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.5.4' //NB - there is an issue with newer versions of gradle. The APK balloons out, so far haven't diagnosed why.
                                                         //If you want to try upgrading gradle plugin past 3.5.4 you will need to also diagnose the APK ballooning issue.
        classpath "io.realm:realm-gradle-plugin:7.0.8"
	// WARNING WARNING WARNING
	// you are about to add here a dependency to be used in the Android app
	// don't do that. add that dependency to app/build.gradle
        classpath 'com.google.gms:google-services:4.3.4'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
        classpath 'com.google.firebase:firebase-crashlytics-gradle:2.3.0'
    }
}

allprojects {
    repositories {
        google()
        jcenter()
        mavenCentral()
        maven { url 'https://jitpack.io' }
	// WARNING WARNING WARNING
	// you are about to add here a repository which provides some library for the Android app
	// don't do that. add that repository to app/build.gradle
    }

    configurations.all {
        resolutionStrategy {
            force 'com.google.firebase:firebase-analytics:16.5.0'
        }
    }
}

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

// WARNING WARNING WARNING
// you are about to add here a plugin that is only related to the Android app
// don't do that. add that repository to app/build.gradle