private final Project project;
    private final Provider<BwcVersions.UnreleasedVersionInfo> unreleasedVersionInfo;
    private final Provider<InternalDistributionBwcSetupPlugin.BwcTaskThrottle> bwcTaskThrottleProvider;

    private Provider<File> checkoutDir;

    public BwcSetupExtension(
            Project project,
            Provider<BwcVersions.UnreleasedVersionInfo> unreleasedVersionInfo,

These are automatically checked out and built from source.
See link:./build-tools-internal/src/main/java/org/elasticsearch/gradle/BwcVersions.java[BwcVersions]
and link:./distribution/bwc/build.gradle[distribution/bwc/build.gradle]
for more information.

When running `./gradlew check`, minimal bwc checks are also run against compatible versions that are not yet released.

            .forPreviousUnreleased(
                (BwcVersions.UnreleasedVersionInfo unreleasedVersion) -> {
                    configureBwcProject(project.project(unreleasedVersion.gradleProjectPath), unreleasedVersion, bwcTaskThrottleProvider);
                }
            );
    }

    private void configureBwcProject(
        Project project,
        BwcVersions.UnreleasedVersionInfo versionInfo,

ext.bwcTaskName = { Version version ->
  return "v${version}#bwcTest"
}

def bwcTestSnapshots = tasks.register("bwcTestSnapshots") {
  if (project.bwc_tests_enabled) {
    dependsOn tasks.matching { task -> BuildParams.bwcVersions.unreleased.any { version -> bwcTaskName(version) == task.name } }
  }
}

tasks.register("bwcTest") {
  description = 'Runs backwards compatibility tests.'
  group = 'verification'

                );
            }
            return null;
        }));

        resolutions.register("bwc", distributionResolution -> distributionResolution.setResolver((project, distribution) -> {
            BwcVersions.UnreleasedVersionInfo unreleasedInfo = BuildParams.getBwcVersions().unreleasedInfo(Version.fromString(distribution.getVersion()));
            if (unreleasedInfo != null) {
                if (distribution.getBundledJdk() == false) {

public class BwcGitExtension {

    private Provider<Version> bwcVersion;
    private Provider<String> bwcBranch;
    private Property<File> checkoutDir;

    @Inject
    public BwcGitExtension(ObjectFactory objectFactory) {
        this.checkoutDir = objectFactory.property(File.class);
    }

    public Provider<Version> getBwcVersion() {
        return bwcVersion;
    }

        buildFile << """
            import org.elasticsearch.gradle.Version;
            apply plugin: org.elasticsearch.gradle.internal.InternalBwcGitPlugin

            bwcGitConfig {
                 bwcVersion = project.provider { Version.fromString("7.9.1") }
                 bwcBranch = project.provider { "7.x" }
                 checkoutDir = project.provider{file("build/checkout")}
            }
        """

    }

    private static String destructiveDistroUpgradeTestTaskName(ElasticsearchDistribution distro, String bwcVersion) {
        ElasticsearchDistributionType type = distro.getType();
        return "destructiveDistroUpgradeTest.v"
            + bwcVersion
            + "."
            + distroId(type, distro.getPlatform(), distro.getBundledJdk(), distro.getArchitecture());
    }