Gradle Kotlin DSL generatePom task for create minimal pom.xml to use with eclipse.jdt.ls

build.gradle.kts

import org.gradle.api.artifacts.maven.Conf2ScopeMappingContainer.COMPILE
import org.gradle.api.artifacts.maven.Conf2ScopeMappingContainer.PROVIDED

val javaVer = JavaVersion.VERSION_12

tasks {
        task("generatePom") {
        doLast {
            maven.conf2ScopeMappings.apply {
                addMapping(0, configurations.getByName("implementation"), COMPILE)
                addMapping(0, configurations.getByName("compileOnly"), PROVIDED)
            }
            maven.pom {
                withGroovyBuilder {
                    "project" {
                        "build" {
                            "plugins" {
                                "plugin" {
                                    setProperty("artifactId", "maven-compiler-plugin")
                                    setProperty("version", "3.8.1")
                                    "configuration" {
                                        setProperty("compilerVersion", "$javaVer")
                                        setProperty("source", "$javaVer")
                                        setProperty("target", "$javaVer")
                                    }
                                }
                            }
                        }
                    }
                }
            }.writeTo("pom.xml")
        }
    }
}