Historically, Gradle has shipped with some Groovy types in very prominent APIs.
This required the Kotlin DSL to add special integration to work with Groovy closures.
This has also forced plugins written in languages other than Groovy to use Groovy types for some APIs.

When the Kotlin DSL was introduced, we made an effort to add non-Groovy equivalents for all APIs.

      - 'subprojects/plugins/'
  - kotlin_dsl:
    name: 'kotlin_dsl'
    subprojects:
      - 'platforms/core-configuration/kotlin-dsl/'
      - 'platforms/core-configuration/kotlin-dsl-integ-tests/'
      - 'platforms/core-configuration/kotlin-dsl-plugins/'
      - 'platforms/core-configuration/kotlin-dsl-provider-plugins/'
      - 'platforms/core-configuration/kotlin-dsl-tooling-builders/'

import org.gradle.api.plugins.ExtensionAware
import org.gradle.api.tasks.SourceSetContainer
import org.gradle.api.tasks.bundling.Jar
import org.gradle.kotlin.dsl.dependencies
import org.gradle.kotlin.dsl.findByType
import org.gradle.kotlin.dsl.get
import org.gradle.kotlin.dsl.getByName

fun Project.applyOsgi(vararg bndProperties: String) {
  plugins.withId("org.jetbrains.kotlin.jvm") {
    applyOsgi("jar", "osgiApi", bndProperties)
  }

            // DSL reference goes into dsl/
            task.from(extension.getDslReference().getRenderedDocumentation(), sub -> sub.into("dsl"));

            // Javadocs reference goes into javadoc/
            task.from(extension.getJavadocs().getRenderedDocumentation(), sub -> sub.into("javadoc"));

            // Dokka Kotlin DSL reference goes into kotlin-dsl/

                delete { delete(transformDir) }
            }
    }
}


private
val scriptCacheDirNames =
    // TODO Remove gradle-kotlin-dsl* after a while
    listOf("scripts", "scripts-remapped", "gradle-kotlin-dsl", "gradle-kotlin-dsl-accessors", "kotlin-dsl")


private
fun scriptsCacheDirsUnder(cacheDir: File) =
    scriptCacheDirNames
        .map { File(cacheDir, it) }

/**
 * Extracts meta-data from the Groovy and Java source files which make up the Gradle API. Persists the meta-data to a file
 * for later use in generating documentation for the DSL, such as by {@link gradlebuild.docs.dsl.docbook.AssembleDslDocTask}.
 */
@CacheableTask
abstract class ExtractDslMetaDataTask extends SourceTask {
    @OutputFile
    abstract RegularFileProperty getDestinationFile();

    /**

    implementation("org.gradle.kotlin.kotlin-dsl:org.gradle.kotlin.kotlin-dsl.gradle.plugin:4.4.0")
    // This Kotlin version should only be updated when updating the above kotlin-dsl version
    implementation("org.jetbrains.kotlin:kotlin-gradle-plugin:1.9.23")
    implementation("org.gradle.kotlin:gradle-kotlin-dsl-conventions")
    implementation("org.gradle:test-retry-gradle-plugin:1.5.2")

<?xml version="1.0"?>
<project>
    <modelVersion>4.0.0</modelVersion>
    <name>Gradle_Check Config DSL Script</name>
    <properties>
        <kotlin.version>1.8.22</kotlin.version>
        <teamcity.dsl.version>2023.11</teamcity.dsl.version>
        <mockk.version>1.9</mockk.version>
        <bytebuddy.version>1.10.6</bytebuddy.version>
        <junit.version>5.8.1</junit.version>
        <maven.compiler.source>1.8</maven.compiler.source>

import org.gradle.api.provider.Provider
import org.gradle.build.event.BuildEventsListenerRegistry
// Using star import to workaround https://youtrack.jetbrains.com/issue/KTIJ-24390
import org.gradle.kotlin.dsl.*
import org.gradle.kotlin.dsl.support.serviceOf

/**
 * In build-logic and main build, register a BuildService instance separately,
 * which collects necessary information for build scan.
 */

        param("env.PGP_SIGNING_KEY_PASSPHRASE", "%pgpSigningPassphrase%")
    }
    steps {
        gradleWrapper {
            name = "Publish Kotlin DSL Plugin"
            tasks = "clean :kotlin-dsl-plugins:publishPlugins --no-configuration-cache"
        }
    }