build.gradle

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

buildscript {

    ext.versions = [
            'kotlin'    : '1.3.72',
            'minSdk'    : 21,
            'compileSdk': 29,
            'buildTools': '29.0.3',
    ]

    repositories {
        google()
        jcenter()

    }
    dependencies {
        classpath 'com.android.tools.build:gradle:4.0.0'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:${versions.kotlin}"
        classpath "com.vanniktech:gradle-maven-publish-plugin:0.11.1"
    }
}

allprojects {
    repositories {
        google()
        jcenter()
    }
}

subprojects {
    // Read in the signing.properties file if it is exists
    def signingPropsFile = rootProject.file('release/signing.properties')
    if (signingPropsFile.exists()) {
        def localProperties = new Properties()
        signingPropsFile.withInputStream { is -> localProperties.load(is) }
        localProperties.each { prop ->
            if (prop.key == "signing.secretKeyRingFile") {
                // If this is the key ring, treat it as a relative path
                project.ext.set(prop.key, this.rootProject.file(prop.value).absolutePath)
            } else {
                project.ext.set(prop.key, prop.value)
            }
        }
    }
}

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