ext in buildscript can not be recognised by Gradle Kotlin DSL

Question

In these days, I am trying to write some codes to experience the Spring reactive features and kotlin extension in Spring 5, and I also prepared a gradle Kotlin DSL build.gradle

Answer 1

What is working for me is using ext in allprojects instead of buildscript, so in your top-level build.gradle.kts

allprojects {
  ext {
    set("supportLibraryVersion", "26.0.1")
  }
}

then you can use it in build.gradle.kts files in modules like this:

val supportLibraryVersion = ext.get("supportLibraryVersion") as String