just would like to share an interesting finding: gradle 4.4 seems to report module names differently. i defined a task like this:

task("showBuildscriptModules") {
    doLast {
        buildscript.configurations["classpath"]
                .resolvedConfiguration.firstLevelModuleDependencies
                .forEach { println(it.moduleName) }
    }
}

and its output is:

spring-boot-gradle-plugin
org.jetbrains.kotlin.jvm.gradle.plugin
org.jetbrains.kotlin.plugin.spring.gradle.plugin
org.jetbrains.kotlin.plugin.noarg.gradle.plugin
io.spring.dependency-management.gradle.plugin

while with gradle 4.3.1 it’s:

spring-boot-gradle-plugin
kotlin-gradle-plugin
kotlin-allopen
kotlin-noarg
dependency-management-plugin