Fix Write-unsafe context error in refreshSync during New Project dialog

build.gradle.kts

@@ -108,17 +108,18 @@ dependencies {
     implementation(libs.jspecify)
 
     intellijPlatform {
-        intellijIdeaCommunity(libs.versions.intellij.ide) {
+        intellijIdea(libs.versions.intellij.ide) {
             useInstaller = false
         }
 
         // Bundled plugin dependencies
         bundledPlugin("com.intellij.java")
         bundledPlugin("org.jetbrains.idea.maven")
         bundledPlugin("com.intellij.gradle")
+        bundledPlugin("org.jetbrains.idea.reposearch")
         bundledPlugin("org.intellij.groovy")
         bundledPlugin("ByteCodeViewer")
-        bundledPlugin("org.intellij.intelliLang")
+        bundledModule("intellij.platform.langInjection")
         bundledPlugin("com.intellij.properties")
         bundledPlugin("Git4Idea")
         bundledPlugin("com.intellij.modules.json")

buildSrc/src/main/kotlin/mcdev-publishing.gradle.kts

@@ -63,7 +63,6 @@ tasks.publishPlugin {
 
                     false -> PluginRepositoryFactory.create(host.get(), token.get())
                 }
-                @Suppress("DEPRECATION")
                 val uploadBean = repositoryClient.uploader.uploadUpdateByXmlIdAndFamily(
                     id = pluginId,
                     family = ProductFamily.INTELLIJ,

gradle.properties

@@ -3,7 +3,7 @@
 #
 # https://mcdev.io/
 #
-# Copyright (C) 2025 minecraft-dev
+# Copyright (C) 2026 minecraft-dev
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Lesser General Public License as published
@@ -21,7 +21,7 @@
 # suppress inspection "UnusedProperty" for whole file
 org.gradle.jvmargs=-Xmx1g
 
-ideaVersionName = 2025.2
+ideaVersionName = 2026.1
 
 coreVersion = 1.8.15
 

gradle/libs.versions.toml

@@ -1,6 +1,6 @@
 [versions]
 # https://github.com/JetBrains/intellij-community/blob/<version>/.idea/libraries/kotlin_stdlib.xml
-kotlin = "2.2.0-RC2"
+kotlin = "2.3.20-RC2"
 # https://github.com/JetBrains/intellij-community/blob/<version>/.idea/libraries/kotlinx_coroutines_core.xml
 coroutines = "1.10.2"
 junit = "6.0.3"
@@ -14,7 +14,7 @@ intellij-plugin = "2.13.1"
 intellij-plugin-repository-rest-client = "2.0.50"
 # https://www.jetbrains.com/intellij-repository/snapshots or https://www.jetbrains.com/intellij-repository/releases/
 # Search for com.jetbrains.intellij.idea
-intellij-ide = "2025.2"
+intellij-ide = "261.22158.277"
 # https://github.com/JetBrains/gradle-idea-ext-plugin
 idea-ext = "1.4.1"
 
@@ -51,7 +51,7 @@ grammarKit = "org.jetbrains.idea:grammar-kit:1.5.1"
 # Gradle Tooling
 # https://www.jetbrains.com/intellij-repository/snapshots or https://www.jetbrains.com/intellij-repository/releases/
 # Search for com.jetbrains.intellij.gradle
-gradleToolingExtension = { module = "com.jetbrains.intellij.gradle:gradle-tooling-extension", version = "252.23892.409" }
+gradleToolingExtension = { module = "com.jetbrains.intellij.gradle:gradle-tooling-extension", version = "253.29346.138" }
 annotations = "org.jetbrains:annotations:26.1.0"
 groovy = "org.codehaus.groovy:groovy:3.0.25"
 

src/main/kotlin/creator/buildsystem/maven-steps.kt

@@ -3,7 +3,7 @@
  *
  * https://mcdev.io/
  *
- * Copyright (C) 2025 minecraft-dev
+ * Copyright (C) 2026 minecraft-dev
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Lesser General Public License as published
@@ -195,7 +195,7 @@ class MavenImportStep(parent: NewProjectWizardStep) : AbstractLongRunningStep(pa
         val templateConfig = mavenConfigFactory.createTemplateConfiguration(project)
         val runConfiguration = mavenConfigFactory.createConfiguration(runConfigName, templateConfig)
             as MavenRunConfiguration
-        runConfiguration.runnerParameters.goals.add(task)
+        runConfiguration.runnerParameters.goals = listOf(task)
         runConfiguration.runnerParameters.workingDirPath = context.projectDirectory.toString()
 
         runConfiguration.isAllowRunningInParallel = false

src/main/kotlin/creator/custom/types/GradlePluginSelectorCreatorProperty.kt

@@ -3,7 +3,7 @@
  *
  * https://mcdev.io/
  *
- * Copyright (C) 2025 minecraft-dev
+ * Copyright (C) 2026 minecraft-dev
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Lesser General Public License as published
@@ -43,7 +43,7 @@ import com.intellij.ui.dsl.builder.bindItem
 import com.intellij.ui.dsl.builder.bindSelected
 import com.intellij.ui.dsl.builder.bindText
 import com.intellij.util.ui.AsyncProcessIcon
-import fleet.multiplatform.shims.ConcurrentHashMap
+import java.util.concurrent.ConcurrentHashMap
 import java.util.function.Function
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch

src/main/kotlin/creator/step/AbstractReformatFilesStep.kt

@@ -3,7 +3,7 @@
  *
  * https://mcdev.io/
  *
- * Copyright (C) 2025 minecraft-dev
+ * Copyright (C) 2026 minecraft-dev
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Lesser General Public License as published
@@ -50,7 +50,7 @@ abstract class AbstractReformatFilesStep(parent: NewProjectWizardStep) : Abstrac
 
         val rootDir = VfsUtil.findFile(Path.of(context.projectFileDirectory), true) ?: return
         val psiManager = PsiManager.getInstance(project)
-        val files = ReadAction.compute<Array<PsiFile>, Throwable> {
+        val files = ReadAction.computeBlocking<Array<PsiFile>, Throwable> {
             filesToReformat.mapNotNull { path ->
                 VfsUtil.findRelativeFile(rootDir, *path.split('/').toTypedArray())?.let(psiManager::findFile)
             }.toTypedArray()

src/main/kotlin/facet/MinecraftFacet.kt

@@ -3,7 +3,7 @@
  *
  * https://mcdev.io/
  *
- * Copyright (C) 2025 minecraft-dev
+ * Copyright (C) 2026 minecraft-dev
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Lesser General Public License as published
@@ -36,11 +36,8 @@ import com.intellij.facet.FacetTypeId
 import com.intellij.facet.FacetTypeRegistry
 import com.intellij.ide.projectView.ProjectView
 import com.intellij.openapi.application.ApplicationManager
-import com.intellij.openapi.application.runReadAction
 import com.intellij.openapi.application.runWriteAction
 import com.intellij.openapi.module.Module
-import com.intellij.openapi.module.ModuleGrouper
-import com.intellij.openapi.module.ModuleManager
 import com.intellij.openapi.roots.ModuleRootManager
 import com.intellij.openapi.vfs.VirtualFile
 import com.intellij.psi.PsiClass
@@ -227,14 +224,14 @@ class MinecraftFacet(
     fun findFile(path: String, type: SourceType): VirtualFile? {
         try {
             return findFile0(path, type)
-        } catch (ignored: RefreshRootsException) {
+        } catch (_: RefreshRootsException) {
         }
 
         updateRoots()
 
         return try {
             findFile0(path, type)
-        } catch (ignored: RefreshRootsException) {
+        } catch (_: RefreshRootsException) {
             // Well we tried our best
             null
         }
@@ -268,32 +265,6 @@ class MinecraftFacet(
 
         fun getInstance(module: Module) = FacetManager.getInstance(module).getFacetByType(ID)
 
-        fun getChildInstances(module: Module) = runReadAction run@{
-            val instance = getInstance(module)
-            if (instance != null) {
-                return@run setOf(instance)
-            }
-
-            val project = module.project
-            val manager = ModuleManager.getInstance(project)
-            val grouper = ModuleGrouper.instanceFor(project)
-
-            val result = mutableSetOf<MinecraftFacet>()
-
-            val modulePath = grouper.getModuleAsGroupPath(module) ?: return@run result
-
-            for (m in manager.modules) {
-                val path = grouper.getGroupPath(m)
-                if (modulePath != path) {
-                    continue
-                }
-
-                val facet = getInstance(m) ?: continue
-                result.add(facet)
-            }
-            return@run result
-        }
-
         fun <T : AbstractModule> getInstance(module: Module, type: AbstractModuleType<T>) =
             getInstance(module)?.getModuleOfType(type)
 

src/main/kotlin/insight/ColorLineMarkerProvider.kt

@@ -149,7 +149,7 @@ class ColorLineMarkerProvider : LineMarkerProvider {
             }
 
             val actionText = MCDevBundle("generate.color.choose_action")
-            val c = ColorChooserService.instance.showDialog(psiElement.project, editor.component, actionText, color)
+            val c = ColorChooserService.getInstance().showDialog(psiElement.project, editor.component, actionText, color)
                 ?: return@handler
             when (workElement) {
                 is ULiteralExpression -> {

src/main/kotlin/insight/generation/EventGenHelper.kt

@@ -33,6 +33,7 @@ import com.intellij.psi.PsiElement
 import com.intellij.psi.PsiFile
 import com.intellij.psi.codeStyle.CodeStyleManager
 import com.intellij.psi.util.parentOfType
+import org.jetbrains.kotlin.K1Deprecation
 import org.jetbrains.kotlin.analysis.api.KaIdeApi
 import org.jetbrains.kotlin.idea.base.analysis.api.utils.shortenReferences
 import org.jetbrains.kotlin.idea.base.analysis.api.utils.shortenReferencesInRange
@@ -114,7 +115,7 @@ class KotlinEventGenHelper : EventGenHelper {
         val entry = factory.createSuperTypeEntry(fqn)
         val insertedEntry = ktClass.addSuperTypeListEntry(entry)
         when (KotlinPluginModeProvider.currentPluginMode) {
-            KotlinPluginMode.K1 -> ShortenReferences.DEFAULT.process(insertedEntry)
+            KotlinPluginMode.K1 -> @OptIn(K1Deprecation::class) ShortenReferences.DEFAULT.process(insertedEntry)
             // TODO find a non-internal alternative to this...
             KotlinPluginMode.K2 -> @OptIn(KaIdeApi::class) shortenReferences(insertedEntry)
         }
@@ -128,7 +129,7 @@ class KotlinEventGenHelper : EventGenHelper {
 
         val marker = JvmEventGenHelper.doReformat(project, file, startOffset, endOffset) ?: return
         when (KotlinPluginModeProvider.currentPluginMode) {
-            KotlinPluginMode.K1 -> ShortenReferences.DEFAULT.process(file, marker.startOffset, marker.endOffset)
+            KotlinPluginMode.K1 -> @OptIn(K1Deprecation::class) ShortenReferences.DEFAULT.process(file, marker.startOffset, marker.endOffset)
             // TODO find a non-internal alternative to this...
             KotlinPluginMode.K2 -> @OptIn(KaIdeApi::class) shortenReferencesInRange(file, marker.textRange)
         }

src/main/kotlin/platform/fabric/reference/ResourceFileReference.kt

@@ -3,7 +3,7 @@
  *
  * https://mcdev.io/
  *
- * Copyright (C) 2025 minecraft-dev
+ * Copyright (C) 2026 minecraft-dev
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Lesser General Public License as published
@@ -27,7 +27,7 @@ import com.demonwav.mcdev.util.manipulator
 import com.demonwav.mcdev.util.mapFirstNotNull
 import com.demonwav.mcdev.util.reference.InspectionReference
 import com.intellij.json.psi.JsonStringLiteral
-import com.intellij.openapi.application.runReadAction
+import com.intellij.openapi.application.runReadActionBlocking
 import com.intellij.openapi.module.Module
 import com.intellij.openapi.module.ModuleManager
 import com.intellij.openapi.module.ModuleUtilCore
@@ -98,7 +98,7 @@ class ResourceFileReference(
             }
 
             val variants = mutableListOf<Any>()
-            runReadAction {
+            runReadActionBlocking {
                 val relevantModules = getRelevantModules()
 
                 val relevantRootTypes = mutableSetOf(JavaResourceRootType.RESOURCE)

src/main/kotlin/platform/mcp/ct/CtCompletionContributor.kt

@@ -34,7 +34,7 @@ import com.intellij.codeInsight.completion.CompletionType
 import com.intellij.codeInsight.completion.InsertionContext
 import com.intellij.codeInsight.completion.PrioritizedLookupElement
 import com.intellij.codeInsight.lookup.LookupElementBuilder
-import com.intellij.openapi.application.runReadAction
+import com.intellij.openapi.application.runReadActionBlocking
 import com.intellij.patterns.PlatformPatterns
 import com.intellij.psi.PsiDocumentManager
 import com.intellij.psi.TokenType
@@ -63,7 +63,7 @@ private fun insertWhitespace(context: InsertionContext) {
     context.document.insertString(context.editor.caretModel.offset, " ")
     context.editor.caretModel.moveCaretRelatively(1, 0, false, false, false)
     context.setLaterRunnable {
-        runReadAction {
+        runReadActionBlocking {
             CodeCompletionHandlerBase.createHandler(CompletionType.BASIC)
                 .invokeCompletion(context.project, context.editor)
         }

src/main/kotlin/platform/mcp/vanillagradle/VanillaGradleProjectResolverExtension.kt

@@ -3,7 +3,7 @@
  *
  * https://mcdev.io/
  *
- * Copyright (C) 2025 minecraft-dev
+ * Copyright (C) 2026 minecraft-dev
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Lesser General Public License as published
@@ -21,7 +21,7 @@
 package com.demonwav.mcdev.platform.mcp.vanillagradle
 
 import com.demonwav.mcdev.platform.mcp.gradle.tooling.vanillagradle.VanillaGradleModel
-import com.intellij.openapi.application.runReadAction
+import com.intellij.openapi.application.runReadActionBlocking
 import com.intellij.openapi.externalSystem.model.DataNode
 import com.intellij.openapi.externalSystem.model.project.ModuleData
 import org.gradle.tooling.model.idea.IdeaModule
@@ -35,7 +35,7 @@ class VanillaGradleProjectResolverExtension : AbstractProjectResolverExtension()
     override fun getToolingExtensionsClasses() = extraProjectModelClasses
 
     override fun populateModuleExtraModels(gradleModule: IdeaModule, ideModule: DataNode<ModuleData>) {
-        val vgData = runReadAction {
+        val vgData = runReadActionBlocking {
             resolverCtx.getExtraProject(gradleModule, VanillaGradleModel::class.java)
         }
         if (vgData != null && vgData.hasVanillaGradle()) {

src/main/kotlin/platform/mixin/action/FindMixinsAction.kt

@@ -33,7 +33,7 @@ import com.intellij.openapi.actionSystem.CommonDataKeys.CARET
 import com.intellij.openapi.actionSystem.CommonDataKeys.PROJECT
 import com.intellij.openapi.actionSystem.CommonDataKeys.PSI_FILE
 import com.intellij.openapi.application.ApplicationManager
-import com.intellij.openapi.application.runReadAction
+import com.intellij.openapi.application.runReadActionBlocking
 import com.intellij.openapi.progress.ProgressIndicator
 import com.intellij.openapi.progress.runBackgroundableTask
 import com.intellij.openapi.project.Project
@@ -89,13 +89,13 @@ class FindMixinsAction : AnAction() {
             runBackgroundableTask("Searching for Mixins", project, true) run@{ indicator ->
                 indicator.isIndeterminate = true
 
-                val classes = runReadAction {
+                val classes = runReadActionBlocking {
                     if (!targetClass.isValid) {
-                        return@runReadAction null
+                        return@runReadActionBlocking null
                     }
 
                     val classes = findMixins(targetClass, project, indicator)?.filter(filter)
-                        ?: return@runReadAction null
+                        ?: return@runReadActionBlocking null
 
                     when (classes.size) {
                         0 -> null

src/main/kotlin/platform/mixin/completion/InjectionPointTypedHandlerDelegate.kt

@@ -34,7 +34,7 @@ class InjectionPointTypedHandlerDelegate : TypedHandlerDelegate() {
         if (charTyped != ':' || !file.language.isKindOf(JavaLanguage.INSTANCE)) {
             return Result.CONTINUE
         }
-        AutoPopupController.getInstance(project).autoPopupMemberLookup(editor) {
+        AutoPopupController.getInstance(project).scheduleAutoPopup(editor) {
             val offset = editor.caretModel.offset
             val element = it.findElementAt(offset)?.findContextElement()
             InjectionPointReference.ELEMENT_PATTERN.accepts(element)

src/main/kotlin/platform/mixin/debug/MixinPositionManager.kt

@@ -3,7 +3,7 @@
  *
  * https://mcdev.io/
  *
- * Copyright (C) 2025 minecraft-dev
+ * Copyright (C) 2026 minecraft-dev
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Lesser General Public License as published
@@ -33,7 +33,7 @@ import com.intellij.debugger.engine.PositionManagerImpl.ClsSourcePosition
 import com.intellij.debugger.impl.DebuggerUtilsEx
 import com.intellij.debugger.requests.ClassPrepareRequestor
 import com.intellij.ide.highlighter.JavaFileType
-import com.intellij.openapi.application.runReadAction
+import com.intellij.openapi.application.runReadActionBlocking
 import com.intellij.openapi.fileTypes.FileType
 import com.intellij.openapi.project.Project
 import com.intellij.openapi.vfs.VirtualFileManager
@@ -47,6 +47,7 @@ import com.sun.jdi.request.ClassPrepareRequest
 
 class MixinPositionManager(private val debugProcess: DebugProcess) : MultiRequestPositionManager {
 
+    @Deprecated("Deprecated in Java")
     override fun getAcceptedFileTypes(): Set<FileType> = setOf(JavaFileType.INSTANCE)
 
     @Throws(NoDataException::class)
@@ -106,7 +107,7 @@ class MixinPositionManager(private val debugProcess: DebugProcess) : MultiReques
     }
 
     override fun getAllClasses(classPosition: SourcePosition): List<ReferenceType> {
-        return runReadAction {
+        return runReadActionBlocking {
             findMatchingClasses(classPosition)
                 .flatMap { name -> debugProcess.virtualMachineProxy.classesByName(name).asSequence() }
                 .toList()
@@ -137,7 +138,7 @@ class MixinPositionManager(private val debugProcess: DebugProcess) : MultiReques
         requestor: ClassPrepareRequestor,
         position: SourcePosition,
     ): List<ClassPrepareRequest> {
-        return runReadAction {
+        return runReadActionBlocking {
             findMatchingClasses(position)
                 .mapNotNull { name -> debugProcess.requestsManager.createClassPrepareRequest(requestor, name) }
                 .toList()

src/main/kotlin/platform/mixin/expression/MEExpressionAnnotator.kt

@@ -362,7 +362,7 @@ class MEExpressionAnnotator : Annotator {
             hostEditor.caretModel.moveToOffset(dummy.textOffset)
             PsiDocumentManager.getInstance(project).doPostponedOperationsAndUnblockDocument(hostEditor.document)
             hostEditor.document.replaceString(dummy.textRange.startOffset, dummy.textRange.endOffset, "")
-            AutoPopupController.getInstance(project).autoPopupMemberLookup(hostEditor, null)
+            AutoPopupController.getInstance(project).scheduleAutoPopup(hostEditor, null)
         }
     }
 }