Can't use project extra properties in plugin block

Question

I have a multi-project build, and more often than not I find myself locking versions for artifacts across the board. So in my root project I define something like:

Answer 1

build.gradle.kts root

buildscript {
  val kotlinVersion by rootProject.extra { "1.3.10" }
  ...
}

build.gradle.kts module

dependencies {
  implementation("org.jetbrains.kotlin:kotlin-stdlib-jdk7:${rootProject.extra.get("kotlinVersion")}")
}

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