}
}

configure<CheckstyleExtension> {
  config = resources.text.fromArchiveEntry(checkstyleConfig, "google_checks.xml")
  toolVersion = version("checkstyle")

  val sourceSets = project.extensions.findByType<SourceSetContainer>()
  val main = sourceSets?.findByName("main") ?: sourceSets?.findByName("jvmMain")
  if (main != null) {
    this.sourceSets = listOf(main)
  }
}

    extensions.findByType(ProjectStructure::class.java)!!.architectureElements.add(module)
    module.moduleConfiguration()
}

/**
 * Defines a platform.
 */
fun Settings.platform(platformName: String, platformConfiguration: PlatformBuilder.() -> Unit): PlatformBuilder {
    val platform = PlatformBuilder(platformName, this)

                            systemProperty("package.cycle.exclude.patterns", excludePatterns.get().joinToString(","))
                        }
                        extensions.findByType<DevelocityTestConfiguration>()?.apply {
                            // PTS doesn't work well with architecture tests which scan all classes
                            predictiveTestSelection.enabled = false

fun Project.getBuildEnvironmentExtension(): BuildEnvironmentExtension = extensions.getByType(BuildEnvironmentExtension::class.java)

fun Project.getBuildEnvironmentExtensionOrNull(): BuildEnvironmentExtension? = extensions.findByType(BuildEnvironmentExtension::class.java)

fun Project.repoRoot(): Directory = getBuildEnvironmentExtensionOrNull()?.repoRoot?.get() ?: layout.projectDirectory.parentOrRoot()