gradle kotlin dsl - How to configure dependencies for subprojects - gradle

Question

I'm creating gradle multi project for kotlin programming.
When I create dependencies under subprojects in main project build.gradle.kts I'm getting error Configuration with name 'implementation' not found.
Below is my configuration -
plugins {
kotlin("jvm") version "1.3.61" apply false
}
subprojects {
dependencies {
val implementation by configurations
implementation(kotlin("stdlib-jdk8"))
}
}
Once I move the plugins and dependencies into subproject build.gradle.kts then it is working fine.
How can I make dependencies under subprojects work fine?
Code is on github.

Answer 1

With Kotlin dsl, you can add your dependencies as long as you use either apply(plugin = "org.jetbrains.kotlin.jvm") or apply(plugin = "java").
Those needs to be where you put your dependencies { .. }, usually inside a subprojects { .. }.
So here would be a simple build.gradle.kts that would propagate the kotlin dependency in all its subprojects.
plugins {
kotlin("jvm") version "1.3.50"
}
repositories {
mavenCentral()
}
subprojects {
apply(plugin = "org.jetbrains.kotlin.jvm")
dependencies {
implementation(kotlin("stdlib-jdk8"))
}
tasks.withType<KotlinCompile> {
kotlinOptions {
freeCompilerArgs = listOf("-Xjsr305=strict")
jvmTarget = "11"
}
}
}
(You would still need to have the kotlin plugin, however no need to specify the version in the other subproject once defined at the root)

Answer 2

Adding the below configuration worked for me
buildscript {
repositories {
maven {
url = uri("https://plugins.gradle.org/m2/")
}
}
dependencies {
classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:1.3.61")
}
}
subprojects {
apply(plugin = "java")
apply(plugin = "org.jetbrains.kotlin.jvm")
dependencies {
val implementation by configurations
implementation(kotlin("stdlib-jdk8"))
}
}

Answer 3

In your root build.gradle.kts you can also exclude projects if you want:
subprojects {
if (!project.name.contains("ios")) {
apply("${rootDir}/ktlint.gradle.kts")
apply(plugin = "org.jetbrains.kotlinx.kover")
apply(plugin = "com.diffplug.spotless")
}
}