private final ClassLoaderScope classLoaderScope;

    private final LoadingCache<Class<?>, PluginImplementation<?>> classMappings;
    private final LoadingCache<PluginIdLookupCacheKey, Optional<PluginImplementation<?>>> idMappings;

    public DefaultPluginRegistry(PluginInspector pluginInspector, ClassLoaderScope classLoaderScope) {
        this(null, pluginInspector, classLoaderScope);
    }

        GradleInternal gradle,
        ClassLoaderScope classLoaderScope,
        ClassLoaderScope baseClassLoaderScope,
        ScriptHandler settingsScriptHandler,
        File settingsDir,
        ScriptSource settingsScript,
        StartParameter startParameter
    ) {
        this.gradle = gradle;
        this.classLoaderScope = classLoaderScope;
        this.baseClassLoaderScope = baseClassLoaderScope;

        if (target == null || requests.isEmpty()) {
            classLoaderScope.export(scriptHandler.getInstrumentedScriptClassPath());
            classLoaderScope.lock();
            return;
        }

            throw e.cause as? ScriptCompilationException ?: e
        }

        override fun compilationClassPathOf(classLoaderScope: ClassLoaderScope): ClassPath =
            classPathProvider.compilationClassPathOf(classLoaderScope)

        override fun loadClassInChildScopeOf(
            classLoaderScope: ClassLoaderScope,
            childScopeId: String,
            origin: ClassLoaderScopeOrigin,
            location: File,

            initializer: (File) -> Unit
        ): File

        fun startCompilerOperation(
            description: String
        ): AutoCloseable

        fun compilationClassPathOf(
            classLoaderScope: ClassLoaderScope
        ): ClassPath

        /**
         * Provides an additional [ClassPath] to be used in the compilation of a top-level [Project] script
         * `buildscript` or `plugins` block.
         *

    public void setClassLoaderScope(Supplier<? extends ClassLoaderScope> classLoaderScope) {
        if (this.classLoaderScope != null) {
            throw new IllegalStateException("Class loader scope already used");
        }
        this.classLoaderScope = classLoaderScope;
    }

    @Override
    public ClassLoaderScope getClassLoaderScope() {
        if (classLoaderScope == null) {

    get() = compilationClassPathOf((this as ProjectInternal).classLoaderScope)


private
fun Project.compilationClassPathOf(classLoaderScope: ClassLoaderScope) =
    serviceOf<KotlinScriptClassPathProvider>().safeCompilationClassPathOf(classLoaderScope, true) {
        (this as ProjectInternal).gradle
    }


private
inline fun KotlinScriptClassPathProvider.safeCompilationClassPathOf(

                    .get()
            }


    private
    fun configuredProjectSchemaOf(scriptTarget: Any, classLoaderScope: ClassLoaderScope): TypedProjectSchema? {
        require(classLoaderScope.isLocked) {
            "project.classLoaderScope must be locked before querying the project schema"
        }
        return projectSchemaProvider.schemaFor(scriptTarget)?.takeIf { it.isNotEmpty() }
    }

    override fun getServices(): ServiceRegistry =
        delegate.services

    override fun setClassLoaderScope(classLoaderScope: Supplier<out ClassLoaderScope>) {
        delegate.setClassLoaderScope(classLoaderScope)
    }

    override fun getClassLoaderScope(): ClassLoaderScope =
        delegate.classLoaderScope

    override fun setIncludedBuilds(includedBuilds: MutableCollection<out IncludedBuildInternal>) {

        rootState.createMutableModel(Stub(ClassLoaderScope), Stub(ClassLoaderScope))

        def project = project("p1")
        def state = registry.stateFor(projectId("p1"))

        1 * projectFactory.createProject(_, _, state, _, _, _, _) >> project

        state.createMutableModel(Stub(ClassLoaderScope), Stub(ClassLoaderScope))

        expect:
        rootState.mutableModel == rootProject