im having troubles creating a jar from my desktop app. I am using

ShadowJar

for it but the jar created throws an exception when run. I use this configuration :

import com.github.jengelman.gradle.plugins.shadow.tasks.ShadowJar

plugins {
    // ...
    id("com.github.johnrengelman.shadow") version "8.1.1"
    id("java")
}

tasks.withType<ShadowJar> {
    manifest {
        attributes.put("Main-Class", "MainKt")
    }

    val target = kotlin.targets.named("desktop").get()
    from(target.compilations["main"].output)
    val runtimeClasspath = target.compilations["main"].compileDependencyFiles
    configurations = mutableListOf(runtimeClasspath)
}

I then run the jar with

java -jar ./composeApp/build/libs/composeApp-all.jar

and it gives me:

Exception in thread "main" java.lang.NoClassDefFoundError: androidx/collection/ScatterMapKt
        at androidx.compose.runtime.collection.ScopeMap.<init>(ScopeMap.kt:26)
        at androidx.compose.runtime.CompositionImpl.<init>(Composition.kt:479)
        at androidx.compose.runtime.CompositionImpl.<init>(Composition.kt:434)
        at androidx.compose.runtime.CompositionKt.Composition(Composition.kt:335)
        at androidx.compose.ui.window.Application_desktopKt$awaitApplication$2$1$2.invokeSuspend(Application.desktop.kt:217)
        at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
        at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:108)

was anyone able to do this?

Getting

Caused by: io.mockk.MockKException: Failed matching mocking signature for
SignedCall(retValue=java.lang.Object@32bb09d9, isRetValueMock=true, retType=class kotlin.Any, self=UseCase(#25), method=execute(Any, Continuation), args=[kotlin.Unit, Continuation at com.expediagroup.ord.fbs.usecase.UseCaseExecutorTest$2$1.invokeSuspend(UseCaseExecutorTest.kt:47)], invocationStr=UseCase(#25).execute(kotlin.Unit, continuation {}))
left matchers: [any()]

what could be the issue…

I've tried upgrading my Kotlin Multiplatform project to use Kotlin 2.1.0-Beta2, but when I try to build it I get the following failure (full stacktrace in thread):

Execution failed for task ':common:compileKotlinJvm'.
> 'void org.jetbrains.kotlin.cli.common.arguments.CommonToolArguments.setExtraWarnings(boolean)'
...
Caused by: java.lang.NoSuchMethodError: 'void org.jetbrains.kotlin.cli.common.arguments.CommonToolArguments.setExtraWarnings(boolean)'

My

libs.versions.toml

contains the following (along with a host of other versions/libraries/plugins):

libs.versions.toml
[versions]
kotlin = "2.1.0-Beta2"
[plugins]
kotlin-jvm = { id = "org.jetbrains.kotlin.jvm", version.ref = "kotlin" }

Any ideas what I might have got wrong, or is more information required on my gradle build config? (in which case I probably need to try and make a simpler test case to try and reproduce the problem)

Hey, I'm new to ktlint and i want to define some custom rules in my micronaut kotlin project for formatting. How can i achieve it? Any suggestion or guide would be helpful. Thanks.

I'm getting this error when building my iOS KMP app, it seems to be coming from Koin:

> Task :umbrella:linkDebugFrameworkIosSimulatorArm64 FAILED
e: Compilation failed: IrPropertySymbolImpl is already bound. Signature: org.koin.ksp.generated/_defaultModule|{}_defaultModule[0]. Owner: PROPERTY name:_defaultModule visibility:public modality:FINAL [val]

 * Source files: 
 * Compiler version: 2.0.21
 * Output kind: FRAMEWORK

e: java.lang.IllegalStateException: IrPropertySymbolImpl is already bound. Signature: org.koin.ksp.generated/_defaultModule|{}_defaultModule[0]. Owner: PROPERTY name:_defaultModule visibility:public modality:FINAL [val]
        at org.jetbrains.kotlin.ir.symbols.impl.IrSymbolBase.bind(IrSymbolImpl.kt:67)
        at org.jetbrains.kotlin.ir.declarations.impl.IrPropertyImpl.<init>(IrPropertyImpl.kt:63)
        at org.jetbrains.kotlin.ir.declarations.IrFactory.createProperty(IrFactory.kt:299)
        at org.jetbrains.kotlin.ir.declarations.IrFactory.createProperty$default(IrFactory.kt:282)
        at org.jetbrains.kotlin.backend.common.serialization.IrDeclarationDeserializer.deserializeIrProperty$lambda$76$lambda$70(IrDeclarationDeserializer.kt:737)
        at org.jetbrains.kotlin.ir.util.SymbolTable.declareProperty(SymbolTable.kt:800)
        at org.jetbrains.kotlin.backend.common.serialization.IrDeclarationDeserializer.deserializeIrProperty(IrDeclarationDeserializer.kt:735)
        at org.jetbrains.kotlin.backend.common.serialization.IrDeclarationDeserializer.deserializeDeclaration(IrDeclarationDeserializer.kt:800)
        at org.jetbrains.kotlin.backend.common.serialization.IrDeclarationDeserializer.deserializeDeclaration$default(IrDeclarationDeserializer.kt:793)
        at org.jetbrains.kotlin.backend.common.serialization.IrFileDeserializer.deserializeDeclaration(IrFileDeserializer.kt:41)
        at org.jetbrains.kotlin.backend.common.serialization.FileDeserializationState.deserializeAllFileReachableTopLevel(IrFileDeserializer.kt:141)
        ...

I'm trying to figure out what have I changed in my last few commits that may have caused this, because this used to work just fine... But sharing in case anyone has any quick idea!

I am using Spotless to run ktlint in my project. I have the setup working and I have it recognising the editorConfig file. There is one really weird thing though which I am unable to figure out, some rules (I mean whole rule sets) are not recognised at all in the editorConfig file. Specifically any ktlint rules such as:

ktlint_code_style = ktlint_official
ktlint_ignore_back_ticked_identifier = true       
ktlint_standard = enabled

What I can do is in my spotless.gradle file I can use

editorConfigOverride

to set any of these rules, so I do have a working setup, it's just some rules are set in the editorConfig and some are now in this editorConfigOverride block in my spotless gradle file. I am struggling to find anyone who's has this issue before, wondering if my set up is wrong, or if I need further setup to have these rules available for reference in my project? Any ideas for where I could look next would be appreciated!

Do you know if it's possible to create a jupyter-notebook in a kotlin-project which has access to the project classes (and its dependencies)? I know I could publish to maven-local but this always feels a bit clumsy for quick exploration/prototyping.

I have a map that is going to be used by multiple coroutines; its entries will be read and modified. How to make sure this map is thread-safe? I came across mutex and atomics but I'm not sure what's the difference between them. I know

Mutex

uses atomics internally too and that made me more confused. I also don't fully understand how atomics work in the first place, like in what case would they lock the object? Would putting my map in an atomic guarantees the operations performed will be synchronized? etc

Generating Kotlin/Retrofit networking code from Swagger Specs: https://github.com/yelp/swagger-gradle-codegen Feedbacks/Issues/PRs are welcome 💪

After upgrading to Ktor3, I get the following error when using Koin:

java.lang.NoClassDefFoundError: io/ktor/server/routing/RoutingKt
	at org.koin.ktor.ext.RouteExtKt.getKoin(RouteExt.kt:74)
	at dk.finance24.routes.OrganizationRouteKt$allOrganizations$$inlined$inject$default$1.invoke(RouteExt.kt:76)
	at kotlin.SynchronizedLazyImpl.getValue(LazyJVM.kt:74)
	at dk.finance24.routes.OrganizationRouteKt.allOrganizations$lambda$2(OrganizationRoute.kt:23)
	at dk.finance24.routes.OrganizationRouteKt.access$allOrganizations$lambda$2(OrganizationRoute.kt:1)
	at dk.finance24.routes.OrganizationRouteKt$allOrganizations$1.invokeSuspend(OrganizationRoute.kt:25)
	at dk.finance24.routes.OrganizationRouteKt$allOrganizations$1.invoke(OrganizationRoute.kt)
	at dk.finance24.routes.OrganizationRouteKt$allOrganizations$1.invoke(OrganizationRoute.kt)
	at io.ktor.server.routing.RoutingNode$buildPipeline$1$1.invokeSuspend(RoutingNode.kt:115)
	at io.ktor.server.routing.RoutingNode$buildPipeline$1$1.invoke(RoutingNode.kt)
	at io.ktor.server.routing.RoutingNode$buildPipeline$1$1.invoke(RoutingNode.kt)
	at io.ktor.util.pipeline.PipelineJvmKt.pipelineStartCoroutineUninterceptedOrReturn(PipelineJvm.kt:15)
	at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:131)
	at io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:89)
	at io.ktor.util.pipeline.SuspendFunctionGun.execute$ktor_utils(SuspendFunctionGun.kt:109)
	at io.ktor.util.pipeline.Pipeline.execute(Pipeline.kt:86)
	at io.ktor.server.routing.RoutingRoot$executeResult$$inlined$execute$1.invokeSuspend(Pipeline.kt:490)
	at io.ktor.server.routing.RoutingRoot$executeResult$$inlined$execute$1.invoke(Pipeline.kt)
	at io.ktor.server.routing.RoutingRoot$executeResult$$inlined$execute$1.invoke(Pipeline.kt)
	at io.ktor.util.debug.ContextUtilsKt.initContextInDebugMode(ContextUtils.kt:17)
	at io.ktor.server.routing.RoutingRoot.executeResult(RoutingRoot.kt:193)
	at io.ktor.server.routing.RoutingRoot.interceptor(RoutingRoot.kt:66)
	at io.ktor.server.routing.RoutingRoot$Plugin$install$1.invokeSuspend(RoutingRoot.kt:143)
	at io.ktor.server.routing.RoutingRoot$Plugin$install$1.invoke(RoutingRoot.kt)
	at io.ktor.server.routing.RoutingRoot$Plugin$install$1.invoke(RoutingRoot.kt)
	at io.ktor.util.pipeline.PipelineJvmKt.pipelineStartCoroutineUninterceptedOrReturn(PipelineJvm.kt:15)
	at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:131)
	at io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:89)
	at io.ktor.server.engine.BaseApplicationEngineKt$installDefaultTransformationChecker$1.invokeSuspend(BaseApplicationEngine.kt:112)
	at io.ktor.server.engine.BaseApplicationEngineKt$installDefaultTransformationChecker$1.invoke(BaseApplicationEngine.kt)
	at io.ktor.server.engine.BaseApplicationEngineKt$installDefaultTransformationChecker$1.invoke(BaseApplicationEngine.kt)
	at io.ktor.util.pipeline.PipelineJvmKt.pipelineStartCoroutineUninterceptedOrReturn(PipelineJvm.kt:15)
	at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:131)
	at io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:89)
	at io.ktor.util.pipeline.SuspendFunctionGun.execute$ktor_utils(SuspendFunctionGun.kt:109)
	at io.ktor.util.pipeline.Pipeline.execute(Pipeline.kt:86)
	at io.ktor.server.engine.DefaultEnginePipelineKt$defaultEnginePipeline$1$invokeSuspend$$inlined$execute$1.invokeSuspend(Pipeline.kt:490)
	at io.ktor.server.engine.DefaultEnginePipelineKt$defaultEnginePipeline$1$invokeSuspend$$inlined$execute$1.invoke(Pipeline.kt)
	at io.ktor.server.engine.DefaultEnginePipelineKt$defaultEnginePipeline$1$invokeSuspend$$inlined$execute$1.invoke(Pipeline.kt)
	at io.ktor.util.debug.ContextUtilsKt.initContextInDebugMode(ContextUtils.kt:17)
	at io.ktor.server.engine.DefaultEnginePipelineKt$defaultEnginePipeline$1.invokeSuspend(DefaultEnginePipeline.kt:123)
	at io.ktor.server.engine.DefaultEnginePipelineKt$defaultEnginePipeline$1.invoke(DefaultEnginePipeline.kt)
	at io.ktor.server.engine.DefaultEnginePipelineKt$defaultEnginePipeline$1.invoke(DefaultEnginePipeline.kt)
	at io.ktor.util.pipeline.PipelineJvmKt.pipelineStartCoroutineUninterceptedOrReturn(PipelineJvm.kt:15)
	at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:131)
	at io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:89)
	at io.ktor.util.pipeline.SuspendFunctionGun.execute$ktor_utils(SuspendFunctionGun.kt:109)
	at io.ktor.util.pipeline.Pipeline.execute(Pipeline.kt:86)
	at io.ktor.server.netty.NettyApplicationCallHandler$handleRequest$1$invokeSuspend$$inlined$execute$1.invokeSuspend(Pipeline.kt:490)
	at io.ktor.server.netty.NettyApplicationCallHandler$handleRequest$1$invokeSuspend$$inlined$execute$1.invoke(Pipeline.kt)
	at io.ktor.server.netty.NettyApplicationCallHandler$handleRequest$1$invokeSuspend$$inlined$execute$1.invoke(Pipeline.kt)
	at io.ktor.util.debug.ContextUtilsKt.initContextInDebugMode(ContextUtils.kt:17)
	at io.ktor.server.netty.NettyApplicationCallHandler$handleRequest$1.invokeSuspend(NettyApplicationCallHandler.kt:140)
	at io.ktor.server.netty.NettyApplicationCallHandler$handleRequest$1.invoke(NettyApplicationCallHandler.kt)
	at io.ktor.server.netty.NettyApplicationCallHandler$handleRequest$1.invoke(NettyApplicationCallHandler.kt)
	at kotlinx.coroutines.intrinsics.UndispatchedKt.startCoroutineUndispatched(Undispatched.kt:27)
	at kotlinx.coroutines.CoroutineStart.invoke(CoroutineStart.kt:90)
	at kotlinx.coroutines.AbstractCoroutine.start(AbstractCoroutine.kt:123)
	at kotlinx.coroutines.BuildersKt__Builders_commonKt.launch(Builders.common.kt:52)
	at kotlinx.coroutines.BuildersKt.launch(Unknown Source)
	at io.ktor.server.netty.NettyApplicationCallHandler.handleRequest(NettyApplicationCallHandler.kt:41)
	at io.ktor.server.netty.NettyApplicationCallHandler.channelRead(NettyApplicationCallHandler.kt:33)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444)
	at io.netty.channel.AbstractChannelHandlerContext.access$600(AbstractChannelHandlerContext.java:61)
	at io.netty.channel.AbstractChannelHandlerContext$7.run(AbstractChannelHandlerContext.java:425)
	at io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java:173)
	at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:166)
	at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:472)
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:569)
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997)
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
	at java.base/java.lang.Thread.run(Thread.java:1623)
Caused by: java.lang.ClassNotFoundException: io.ktor.server.routing.RoutingKt
	at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641)
	at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
	... 73 common frames omitted

Anyone know if there is a solution or I should just keep using Ktor 2.x.x?