@eric-milles Should this work on snapshot already? I (accidentally) updates to 2025-09 then decided to try with

https://groovy.jfrog.io/artifactory/plugins-snapshot/e4.37

and seeing

java.lang.NoClassDefFoundError: org/codehaus/groovy/eclipse/refactoring/formatter/GroovyIndentationService
	at org.codehaus.groovy.eclipse.editor.GroovyAutoIndentStrategy.<init>(GroovyAutoIndentStrategy.java:44)
	at org.codehaus.groovy.eclipse.editor.GroovyConfiguration.getAutoEditStrategies(GroovyConfiguration.java:101)
	at org.eclipse.jface.text.source.SourceViewer.configure(SourceViewer.java:547)
	at org.eclipse.jdt.internal.ui.javaeditor.JavaSourceViewer.configure(JavaSourceViewer.java:224)
	at org.eclipse.ui.texteditor.AbstractTextEditor.createPartControl(AbstractTextEditor.java:3382)
	at org.eclipse.ui.texteditor.StatusTextEditor.createPartControl(StatusTextEditor.java:64)
	at org.eclipse.ui.texteditor.AbstractDecoratedTextEditor.createPartControl(AbstractDecoratedTextEditor.java:473)
	at org.eclipse.jdt.internal.ui.javaeditor.JavaEditor.createPartControl(JavaEditor.java:3101)
	at org.eclipse.jdt.internal.ui.javaeditor.CompilationUnitEditor.createPartControl(CompilationUnitEditor.java:1521)
	at org.codehaus.groovy.eclipse.editor.GroovyEditor.createPartControl(GroovyEditor.java:754)
	at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.createPartControl(CompatibilityPart.java:160)
	at org.eclipse.ui.internal.e4.compatibility.CompatibilityEditor.createPartControl(CompatibilityEditor.java:98)
	at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.create(CompatibilityPart.java:367)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:58)
	at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java:1037)
	at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java:998)
	at org.eclipse.e4.core.internal.di.InjectorImpl.internalInject(InjectorImpl.java:142)
	at org.eclipse.e4.core.internal.di.InjectorImpl.internalMake(InjectorImpl.java:401)
	at org.eclipse.e4.core.internal.di.InjectorImpl.make(InjectorImpl.java:319)
	at org.eclipse.e4.core.contexts.ContextInjectionFactory.make(ContextInjectionFactory.java:203)
	at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.createFromBundle(ReflectionContributionFactory.java:90)
	at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.doCreate(ReflectionContributionFactory.java:59)
	at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.create(ReflectionContributionFactory.java:42)
	at org.eclipse.ui.internal.WorkbenchContributionFactory.create(WorkbenchContributionFactory.java:46)
	at org.eclipse.e4.ui.workbench.renderers.swt.ContributedPartRenderer.createWidget(ContributedPartRenderer.java:134)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createWidget(PartRenderingEngine.java:991)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:658)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:762)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$2.run(PartRenderingEngine.java:727)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:711)
	at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.lambda$0(PartServiceImpl.java:105)
	at org.eclipse.e4.ui.services.internal.events.UIEventHandler.lambda$0(UIEventHandler.java:38)
	at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:183)
	at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:133)
	at org.eclipse.swt.widgets.Display.syncExec(Display.java:5989)
	at org.eclipse.e4.ui.workbench.swt.DisplayUISynchronize.syncExec(DisplayUISynchronize.java:34)
	at org.eclipse.e4.ui.services.internal.events.UIEventHandler.handleEvent(UIEventHandler.java:38)
	at org.eclipse.equinox.internal.event.EventHandlerWrapper.handleEvent(EventHandlerWrapper.java:206)
	at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:201)
	at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:1)
	at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
	at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:151)
	at org.eclipse.equinox.internal.event.EventAdminImpl.dispatchEvent(EventAdminImpl.java:132)
	at org.eclipse.equinox.internal.event.EventAdminImpl.sendEvent(EventAdminImpl.java:73)
	at org.eclipse.equinox.internal.event.EventComponent.sendEvent(EventComponent.java:48)
	at org.eclipse.e4.ui.services.internal.events.EventBroker.send(EventBroker.java:55)
	at org.eclipse.e4.ui.internal.workbench.UIEventPublisher.notifyChanged(UIEventPublisher.java:60)
	at org.eclipse.emf.common.notify.impl.BasicNotifierImpl.eNotify(BasicNotifierImpl.java:424)
	at org.eclipse.e4.ui.model.application.ui.impl.ElementContainerImpl.setSelectedElementGen(ElementContainerImpl.java:168)
	at org.eclipse.e4.ui.model.application.ui.impl.ElementContainerImpl.setSelectedElement(ElementContainerImpl.java:187)
	at org.eclipse.e4.ui.internal.workbench.ModelServiceImpl.showElementInWindow(ModelServiceImpl.java:661)
	at org.eclipse.e4.ui.internal.workbench.ModelServiceImpl.bringToTop(ModelServiceImpl.java:625)
	at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.delegateBringToTop(PartServiceImpl.java:796)
	at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.bringToTop(PartServiceImpl.java:401)
	at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.showPart(PartServiceImpl.java:1271)
	at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:3228)
	at org.eclipse.ui.internal.WorkbenchPage.lambda$11(WorkbenchPage.java:3118)
	at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:67)
	at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:3116)
	at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:3086)
	at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:3077)
	at org.eclipse.ui.ide.IDE.openEditor(IDE.java:546)
	at org.eclipse.ui.ide.IDE.openEditor(IDE.java:506)
	at org.eclipse.ui.internal.ide.handlers.OpenResourceHandler.execute(OpenResourceHandler.java:129)
	at org.eclipse.ui.internal.ide.handlers.OpenResourceHandler.run(OpenResourceHandler.java:182)
	at org.eclipse.ui.internal.handlers.ActionDelegateHandlerProxy.execute(ActionDelegateHandlerProxy.java:285)
	at org.eclipse.ui.internal.handlers.E4HandlerProxy.execute(E4HandlerProxy.java:98)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:58)
	at org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:305)
	at org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:237)
	at org.eclipse.e4.core.contexts.ContextInjectionFactory.invoke(ContextInjectionFactory.java:174)
	at org.eclipse.e4.core.commands.internal.HandlerServiceHandler.execute(HandlerServiceHandler.java:165)
	at org.eclipse.core.commands.Command.executeWithChecks(Command.java:488)
	at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:485)
	at org.eclipse.e4.core.commands.internal.HandlerServiceImpl.executeHandler(HandlerServiceImpl.java:204)
	at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.executeCommand(KeyBindingDispatcher.java:320)
	at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.press(KeyBindingDispatcher.java:581)
	at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.processKeyEvent(KeyBindingDispatcher.java:662)
	at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.filterKeySequenceBindings(KeyBindingDispatcher.java:451)
	at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher$KeyDownFilter.handleEvent(KeyBindingDispatcher.java:104)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:91)
	at org.eclipse.swt.widgets.Display.filterEvent(Display.java:1977)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1655)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1682)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1665)
	at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:1704)
	at org.eclipse.swt.widgets.Widget.gtk_key_press_event(Widget.java:1000)
	at org.eclipse.swt.widgets.Control.gtk_key_press_event(Control.java:4020)
	at org.eclipse.swt.widgets.Composite.gtk_key_press_event(Composite.java:919)
	at org.eclipse.swt.widgets.Tree.gtk_key_press_event(Tree.java:2341)
	at org.eclipse.swt.widgets.Widget.windowProc(Widget.java:2639)
	at org.eclipse.swt.widgets.Control.windowProc(Control.java:6864)
	at org.eclipse.swt.widgets.Tree.windowProc(Tree.java:4240)
	at org.eclipse.swt.widgets.Display.windowProc(Display.java:6191)
	at org.eclipse.swt.internal.gtk3.GTK3.gtk_main_do_event(Native Method)
	at org.eclipse.swt.widgets.Display.eventProc(Display.java:1619)
	at org.eclipse.swt.internal.gtk3.GTK3.gtk_main_iteration_do(Native Method)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:4537)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1151)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:339)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1042)
	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:153)
	at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:678)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:339)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:583)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:173)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:185)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:219)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:149)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:115)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:467)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:298)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:627)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:575)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1431)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1403)
Caused by: java.lang.ClassNotFoundException: An error occurred while automatically activating bundle org.codehaus.groovy.eclipse.refactoring (1583).
	at org.eclipse.osgi.internal.hooks.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:133)
	at org.eclipse.osgi.internal.loader.classpath.ClasspathManager.findLocalClass(ClasspathManager.java:622)
	at org.eclipse.osgi.internal.loader.ModuleClassLoader.findLocalClass(ModuleClassLoader.java:353)
	at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:417)
	at org.eclipse.osgi.internal.loader.sources.SingleSourcePackage.loadClass(SingleSourcePackage.java:41)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass0(BundleLoader.java:521)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:438)
	at org.eclipse.osgi.internal.loader.ModuleClassLoader.loadClass(ModuleClassLoader.java:195)
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:526)
	... 123 more
Caused by: org.osgi.framework.BundleException: Exception in org.codehaus.groovy.eclipse.refactoring.Activator.start() of bundle org.codehaus.groovy.eclipse.refactoring.
	at org.eclipse.osgi.internal.framework.BundleContextImpl.startActivator(BundleContextImpl.java:847)
	at org.eclipse.osgi.internal.framework.BundleContextImpl.start(BundleContextImpl.java:768)
	at org.eclipse.osgi.internal.framework.EquinoxBundle.startWorker0(EquinoxBundle.java:1066)
	at org.eclipse.osgi.internal.framework.EquinoxBundle$EquinoxModule.startWorker(EquinoxBundle.java:394)
	at org.eclipse.osgi.container.Module.doStart(Module.java:643)
	at org.eclipse.osgi.container.Module.start(Module.java:500)
	at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:528)
	at org.eclipse.osgi.internal.hooks.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:122)
	... 131 more
Caused by: java.lang.NoClassDefFoundError: org/codehaus/jdt/groovy/integration/LanguageSupport
	at java.base/java.lang.ClassLoader.defineClass1(Native Method)
	at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1027)
	at org.eclipse.osgi.internal.loader.ModuleClassLoader.defineClass(ModuleClassLoader.java:315)
	at org.eclipse.osgi.internal.loader.classpath.ClasspathManager.defineClass(ClasspathManager.java:778)
	at org.eclipse.osgi.internal.loader.classpath.ClasspathManager.findClassImpl(ClasspathManager.java:695)
	at org.eclipse.osgi.internal.loader.classpath.ClasspathManager.findLocalClassImpl(ClasspathManager.java:659)
	at org.eclipse.osgi.internal.loader.classpath.ClasspathManager.findLocalClassImpl(ClasspathManager.java:639)
	at org.eclipse.osgi.internal.loader.classpath.ClasspathManager.findLocalClass(ClasspathManager.java:618)
	at org.eclipse.osgi.internal.loader.ModuleClassLoader.findLocalClass(ModuleClassLoader.java:353)
	at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:417)
	at org.eclipse.osgi.internal.loader.sources.SingleSourcePackage.loadClass(SingleSourcePackage.java:41)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass0(BundleLoader.java:521)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:438)
	at org.eclipse.osgi.internal.loader.ModuleClassLoader.loadClass(ModuleClassLoader.java:195)
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:526)
	at org.codehaus.groovy.eclipse.refactoring.Activator.start(Activator.java:41)
	at org.eclipse.osgi.internal.framework.BundleContextImpl$2.run(BundleContextImpl.java:826)
	at org.eclipse.osgi.internal.framework.BundleContextImpl$2.run(BundleContextImpl.java:1)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:571)
	at org.eclipse.osgi.internal.framework.BundleContextImpl.startActivator(BundleContextImpl.java:818)
	... 138 more
Caused by: java.lang.ClassNotFoundException: org.codehaus.jdt.groovy.integration.LanguageSupport cannot be found by org.eclipse.jdt.groovy.core_5.9.0.v202509081927-e2509
	at org.eclipse.osgi.internal.loader.BundleLoader.generateException(BundleLoader.java:567)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass0(BundleLoader.java:562)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:438)
	at org.eclipse.osgi.internal.loader.ModuleClassLoader.loadClass(ModuleClassLoader.java:195)
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:526)
	... 158 more

Uh oh!

Add support for Eclipse 4.37 (2025-09) #1631

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