Is there any chance that Jetbrains would consider absorbing benasher44/uuid into a first party

kotlinx.uuid

library? I know we want to keep the Kotlin stdlib small, but not having an ecosystem default for utilities as universal as UUID makes fragmentation within the ecosystem annoying for library maintainers. I know in the past there was a prior discussion about absorbing the above library into the stdlib, which Jetbrains was receptive to, but it didn't seem to go anywhere. I'd like to revisit this issue 🙂

Are there any resources available about how to integrate Swift code into a Kotlin library that uses

suspend

functions? For example if I have a Kotlin function

suspend fun doSomething(something: suspend (String) -> String): String {
  ...
  something("hello")
  ...

  return "world"
}

I want to write a function in Swift and pass it to the Kotlin function ie:

let swiftSomething = // create a Swift function
ModuleKt.doSometthing(swiftSomething)

However I'm not sure if that sort of idea is possible, or how to go about implementing it.

Hello! We are updating from Kotlin

1.5.31

to Kotlin

1.6.10

, and we are having an issue where the

bitcode

is not being included 👀

:x:  ld: bitcode bundle could not be generated because '/Users/me/project-native/modules/iosframework/build/xcode-frameworks/Debug/iphoneos15.0/SharedCode.framework/SharedCode' was built without full bitcode. All frameworks and dylibs for bitcode must be generated from Xcode Archive or Install build file '/Users/me/project-native/modules/iosframework/build/xcode-frameworks/Debug/iphoneos15.0/SharedCode.framework/SharedCode' for architecture arm64



:x:  clang: error: linker command failed with exit code 1 (use -v to see invocation)

Our config is:

kotlin {
    ios {
        binaries {
            framework {
                baseName = "SharedCode"
                embedBitcode(BitcodeEmbeddingMode.BITCODE)

Found this message about the same case: https://kotlinlang.slack.com/archives/C3PQML5NU/p1639075566171200 Could it be a regression in the plugin?

Hi! 👋 A bit surprised to learn that Coroutines (suspend methods) are only half-integrated in KMP. Looks like natives have a completionHandler but nothing to handle the cancellation, so objectiveC code cannot be cooperative to cancellation without writing our own code? Same for Js/Typescript where the usage of Promise don't allow cancellation afaik. The Kotlin code in common looks like if coroutines were ready but actually cancelling only works for JVM/Android ? Am I missing something here? Or is it something planned in a next release?

Hi. New KMM project generated in Android Studio. First iosApp run fails. Any clues?

** BUILD FAILED **


The following build commands failed:	

PhaseScriptExecution Run\ Script /Users/adrianwitaszak/Projects/KMP/MyApplication/build/ios/iosApp.build/Debug-iphonesimulator/iosApp.build/Script-7555FFB5242A651A00829871.sh (in target 'iosApp' from project 'iosApp')

> Task :shared:linkDebugFrameworkIosX64 FAILED
e: Compilation failed: Could not initialize class llvm.llvm

 * Source files: 
 * Compiler version info: Konan: 1.6.10 / Kotlin: 1.6.10
 * Output kind: FRAMEWORK

e: java.lang.NoClassDefFoundError: Could not initialize class llvm.llvm

How do you guys handle errors in KMM? For example, I have this use case

interface SignInUseCase {
    @Throws(Exception::class)
    suspend fun execute(email: String, password: String): Whatever
}

When I call this from iOS, I get

signInUseCase.execute(email: email, password: password) { whatever, error in
    // Handle completion
}

Is there a way to have a custom error here, instead of NSError? Ideally, I'd like to have maybe a class or data class

data class Error(
    val title: String
    val detail: String
}

I'm having some difficulties with my interfaces from common dependencies getting renamed when built for iOS. I'm basically trying to do some super simple di...a shared kotlin module has a class implementation that I'm trying to pass as a dependency in iOS land to other classes/interfaces defined in other kotlin modules. so for an example that's a bit complicated, I have some common Kotlin modules,

moduleA

and then

moduleB

which has A as a dependency.

moduleA

has

InterfaceA

and a class that returns this type,

class A { fun getInterfaceA(): InterfaceA = SomeImpl() }

, and in

moduleB

, I have a class that takes this interface as a param, so

class B(interfaceA: InterfaceA)

. Now over in iOS land, I have a class

Foo

with an instance of class

B

like so,

let var beeClass: B = B(interfaceA: interfaceA)

where

interfaceA

is a member variable assigned during init, so

var interfaceA: InterfaceA

and

init(interfaceA: InterfaceA) { self.interfaceA = interfaceA }

. Lastly, when I try to create in instance of

Foo

with the help of an instance of class

A

like so,

lazy var foo: Foo = Foo(a.getInterfaceA())

, I get complaints from xcode about the argument types not conforming to the expected types because

InterfaceA

is now called

AInterfaceA

. Moreover, if I go to the definition of class

B

in xcode,

InterfaceA

is named something like

BAInterfaceA

. Casting only seems to cause the app to crash and that's what xcode is suggesting I do. not sure if anyone followed that and has some idea what is going on. is there maybe some way to help the kotlin compiler with binding names or something? This doesn't really feel like a situation where the compiler should be changing the name of this interface and almost wonder if this could be a bug

Hi! I’m getting an

InstanceCreateException

on my iOS app when I try to do a request to an API from the shared module.

Uncaught Kotlin exception: org.koin.core.error.InstanceCreationException: Could not create instance for [Singleton:'com.test.remote.BookingApi']

Any idea why this is not being recognized on the iOS-side? (My

Koin.kt

and

BookingAPI.kt

files are described in the thread),

Hi all. I have a multiplatform project where I am trying to target both Android and generic JVM targets. The issue is, both of these targets have to have different gradle plugins applied, so I cannot put all of the plugins at the top of my root build.gradle file. So my question is: Where should I apply a Gradle plugin so that it will only be applied for one platform? I have tried putting them in:

Kotlin {
    platformA {
        // apply plugins for platformA here
    }
    platformB {
        // apply plugins for platformB here
    }
}

but this seems to cause issues. Right now, I get the error "The java plugin has been applied, but it is not compatible with the Android plugins". It seems as though it is trying to apply the plugins during the initial gradle config, not when building a specific platform. Is it possible to do what I am trying to do here?

Hi I am new to kmm. I started with AppCode and created a new kmm project. When I want to build the app for iOS I ran into the following error:

ld: building for iOS Simulator, but linking in dylib built for iOS, file '../../../../../shared/build/bin/iosArm64/debugFramework/shared.framework/shared' for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

> Task :iosApp:buildIosAppMain FAILED

The following build commands failed:
	Ld /Users/rogerkreienbuehl/Programmieren/HelloWorld/iosApp/build/bin/iosApp/Debug-iphonesimulator/HelloWorld.app/HelloWorld normal (in target 'iosApp' from project 'iosApp')
(1 failure)

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':iosApp:buildIosAppMain'.
> Process 'command 'xcrun'' finished with non-zero exit value 65

I work on a MacBook Pro M1 with macOS 12.1 and xCode 13.2.1. How can I fix this linking error?

KMP: I want the Unit Tests in one module to depend on the Test classes from another module. Anyone successfully doing this in a Kotlin Multiplatform project? This is a fairly well trodden question in Gradle generally [1][2]; but these solutions don't apply to multi-platform Kotlin. I saw this issue which suggests Multiplatform is not capable of establishing a test-to-test dependency at the moment. This is disappointing: I have a module structure that enforces clean architecture in my project, but am having to flatten all Test classes to the 'top level' module because they can't participate in the dependency hierarchy. Any suggestions?

Is this a Kotlin/JS compiler bug?

e: java.lang.AssertionError: typeParameters = [] size != typeArguments = [org.jetbrains.kotlin.ir.types.impl.IrSimpleTypeImpl@ccfbb239, org.jetbrains.kotlin.ir.types.impl.IrSimpleTypeImpl@6b488739] size 
        at org.jetbrains.kotlin.ir.overrides.IrOverridingUtilKt.buildFakeOverrideMember(IrOverridingUtil.kt:70)
        at org.jetbrains.kotlin.ir.overrides.FakeOverrideBuilderStrategy.fakeOverrideMember(IrOverridingUtil.kt:28)
        at org.jetbrains.kotlin.ir.overrides.IrOverridingUtil.buildFakeOverridesForClass(IrOverridingUtil.kt:148)
        at org.jetbrains.kotlin.backend.common.overrides.FakeOverrideBuilder.buildFakeOverrideChainsForClass(FakeOverrides.kt:104)
        at org.jetbrains.kotlin.backend.common.overrides.FakeOverrideBuilder.provideFakeOverrides(FakeOverrides.kt:166)
        at org.jetbrains.kotlin.backend.common.overrides.FakeOverrideBuilder.provideFakeOverrides(FakeOverrides.kt:174)
        at org.jetbrains.kotlin.backend.common.serialization.KotlinIrLinker.postProcess(KotlinIrLinker.kt:207)
        at org.jetbrains.kotlin.ir.backend.js.KlibKt.loadIr(klib.kt:351)
        at org.jetbrains.kotlin.ir.backend.js.KlibKt.loadIr$default(klib.kt:232)
        at org.jetbrains.kotlin.ir.backend.js.CompilerKt.compile(compiler.kt:97)
        at org.jetbrains.kotlin.ir.backend.js.CompilerKt.compile$default(compiler.kt:42)
        at org.jetbrains.kotlin.cli.js.K2JsIrCompiler.doExecute(K2JsIrCompiler.kt:306)
        at org.jetbrains.kotlin.cli.js.K2JSCompiler.doExecute(K2JSCompiler.java:182)
        at org.jetbrains.kotlin.cli.js.K2JSCompiler.doExecute(K2JSCompiler.java:75)
        at org.jetbrains.kotlin.cli.common.CLICompiler.execImpl(CLICompiler.kt:92)
        at org.jetbrains.kotlin.cli.common.CLICompiler.execImpl(CLICompiler.kt:44)
        at org.jetbrains.kotlin.cli.common.CLITool.exec(CLITool.kt:98)
        at org.jetbrains.kotlin.daemon.CompileServiceImpl.compile(CompileServiceImpl.kt:1574)
        at jdk.internal.reflect.GeneratedMethodAccessor101.invoke(Unknown Source)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:566)
        at java.rmi/sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:359)
        at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:200)
        at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:197)
        at java.base/java.security.AccessController.doPrivileged(Native Method)
        at java.rmi/sun.rmi.transport.Transport.serviceCall(Transport.java:196)
        at java.rmi/sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:562)
        at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:796)
        at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:677)
        at java.base/java.security.AccessController.doPrivileged(Native Method)
        at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:676)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
        at java.base/java.lang.Thread.run(Thread.java:829)

I’m having issues where Android Studio no longer sees classes declared in AndroidMain sourceSet from the androidApp module. I have

implementation(project(":shared"))

at the top of my Android

build.gradle.kts

file’s dependencies list. The project builds and runs fine, but I get syntax errors in the IDE, Problems pane, and when I try to commit it warns me about all of the fake errors in changed files. This started when I first upgraded to Bumblebee. The same issues do not occur with any code referenced from commonMain. Does anyone have any ideas how I can resolve this?

I just tried to create a brand new kotlin multiplatform from IntelliJ and I got an error right away

Could not open init generic class cache for initialization script ‘/private/var/folders/1f/_13x62m52cd0b42d6ss7kpy00000gn/T/wrapper_init.gradle’ (/Users/jeantuffier/.gradle/caches/7.1/scripts/dpq13m6f9134zige235n01ule).

> BUG! exception in phase ‘semantic analysis’ in source unit ‘_BuildScript_’ Unsupported class file major version 61

* Try:

Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

So I have a functional test library that compiles and works fine for both iOS and Android. Now I want to transpile to javascript as well. Is it just a matter of adding directives to the library's sourceSets in the gradle file? I assume it's something akin to jsmain and jstest.

I created a KMM application using Android Studio, I am able to run the Android and iOS app. Then I created a macOS app that I want to make it depends on the Kotlin Module as well. I tried to copy the build phase from iOS to the macOS project but fail with this error

Showing All Messages
> Task :mylibrary:embedAndSignAppleFrameworkForXcode FAILED

/Users/username/Library/Developer/Xcode/DerivedData/MyApp-macOS-bcjmruopehjfwogkwonshzamndam/Build/Products/Debug/MyApp-macOS.app/Contents/Frameworks/MyLibrary.framework/MyLibrary: replacing existing signature

/Users/username/Library/Developer/Xcode/DerivedData/MyApp-macOS-bcjmruopehjfwogkwonshzamndam/Build/Products/Debug/MyApp-macOS.app/Contents/Frameworks/MyLibrary.framework/MyLibrary: bundle format is ambiguous (could be app or framework)



FAILURE: Build failed with an exception.



* What went wrong:

Execution failed for task ':mylibrary:embedAndSignAppleFrameworkForXcode'.

> Process 'command 'codesign'' finished with non-zero exit value 1

Is there anything extra that I should do to link the framework to the macOS app properly?

Hi 😄 Is there a possibility for keeping resources(strings, dimens, colors) in the common module and then used in shared Compose compositions that are kept in commonMain?

I’m currently running Xcode 12.5.1 but would like to update to Xcode 13. From KMM perspective, would there be anything blocking this?

The default dispatcher for native on coroutines mt is

Dispatchers.Main

right?

Hello, World! Hey I’m getting an

Inheritance from an interface with '@JvmDefault' members is only allowed with -Xjvm-default option

error when implementing an interface which doesn’t have any default methods (okio’s Source) 🤔.  What am I missing? (have this on an MP project, works without issue on a regular JVM project)

I’m writing some unit tests for a class with a dependency for

Ktor

HttpClient

. Tests work just fine on Android, but on iOS getting:

kotlin.native.concurrent.InvalidMutabilityException: mutation attempt of frozen kotlinx.coroutines.test.TestScopeImpl@338a688

I pretty much copy+pasted the ktor test sample. Source in comments. Any tips would be welcome 👍

I am suffering heavily from this bug

<https://youtrack.jetbrains.com/issue/KTIJ-18408>

but the mentioned workaround does not work for me because I cannot build my project anymore if I apply it. I wonder though why nobody else seems to care and why this bug is flagged as obsolete. I am using the latest EA build of IntelliJ in a multi-platform Compose project (desktop & android) which was basically created from the IntelliJ template.

KMM - Monorepo or Multirepo? Hi all. In the last weeks as we’ve been setting up our KMM project, we came across interesting debate about which repo approach should we use - mono repo or multi repo. What are you guys using in your KMM projects? Are there any issues you’ve faced that made you switch repo from mono to multi or vice versa? Both of these approaches have its own pros and cons, but I see more pros in using multi repo approach (shared logic added as a git submodule into ios/android repo): • smaller repo size (specially in the future there may be platform specific binaries in the repo, same goes for assets…) • platform specific CI settings, versioning (tags), pull requests and branches • no need to clone whole project, specially as there are some guys on android and some guys working on iOS project • in the future there might be other platforms using shared module and having all platforms in one repo does not make sense IMO. • and so on One challenge is, how to assure “green-develop/master” on shared module. We’ve been thinking about approach where some feature will be implemented, and there will be changes on common repo. We could probably open a pull request and once tests and everything is green, git workflow could open PR’s for iOS and Android as well. Any opinions, feedback how you guys face this? What are best practices for huge projects?

Are there instructions anywhere to build a full Kotlin toolchain on macOS? I am running macOS 12.3 Beta, and the

libllvmstubs.dylib

stub is seemingly not ABI stable, because it fails to load:

$ ./gradlew :Shared:linkReleaseFrameworkIosArm64
…
> Task :Shared:linkReleaseFrameworkIosArm64 FAILED
e: Compilation failed: Can't load library: /Users/conradev/.konan/kotlin-native-prebuilt-macos-aarch64-1.6.10/konan/nativelib/3037511274092129360/libllvmstubs.dylib

 * Source files:
 * Compiler version info: Konan: 1.6.10 / Kotlin: 1.6.10
 * Output kind: FRAMEWORK

e: java.lang.UnsatisfiedLinkError: Can't load library: /Users/conradev/.konan/kotlin-native-prebuilt-macos-aarch64-1.6.10/konan/nativelib/3037511274092129360/libllvmstubs.dylib
…

the underlying link error seems to be something like this (in libc++):

error: dlopen(/Users/conradev/.konan/kotlin-native-prebuilt-macos-aarch64-1.6.10/konan/nativelib/3037511274092129360/libllvmstubs.dylib, 0x0002): Symbol not found: __ZNKSt3__114error_category10equivalentERKNS_10error_codeEi
  Referenced from: /Users/conradev/.konan/kotlin-native-prebuilt-macos-aarch64-1.6.10/konan/nativelib/3037511274092129360/libllvmstubs.dylib
  Expected in: unknown

This is super random, but it would be great to document

assembleAppleFrameworkForXcode

somewhere. I needed to use it to depend on a Kotlin framework from an iOS framework, because

embedAndSignAppleFrameworkForXcode

only works in app targets

I want my app to sync in the background. For Android there is the WorkManager and iOS has a BGTaskScheduler. What is the best practice to do that on Windows/JVM (Compose for Desktop) and macOS (SwiftUI native)? And the real question: Does anybody already know a Kotlin framework that builds on top of all those so I have to code it just once? 🙂

Hey all. I was wondering if anybody has ran into issues with test modules not being able to access internal elements in the non test modules? I keep getting "Cannot access 'Blah': it is internal"

I've got some kotlin navtive

stately

questions. So I have an object with two

IsolateState

fields and two setter functions:

object FooIos {
	actual val fooList = IsolateState { mutableListOf<MyInterface>() }

    actual val fooString = IsolateState { DataClassWithVarStringField("") }

    actual fun setStringValue(fooStringValue: String) {
        fooString.access { it.varField = fooStringValue }
    }

    actual fun addMyInterfaceCollection(myInterfaceCollection: Collection<MyInterface>) {
        fooList.access { it }.addAll(myInterfaceCollection.toList())
    }

    actual fun doStuff() {
    	fooList.access { item -> 			// fooList is empty
            println("fooList item: $item")
        }

        explicitTag.access { objWithStr ->
            println("objWithStr: $objWithStr") // not empty...prints expected value
        }
    }
}

So far this seems to work. I set the values on the main thread and I can see that the fields are populated, however, later on when I try to use these, fooList is empty regardless of what thread I'm on. I've been trying a number of different things but for some reason I keep loosing the list. What am I missing? I haven't tried the stately collections yet. Second thing is when I try to access the stately field like

val strValue = fooString.access { it }

, it crashes. The exception is

FreezingException: freezing of Ok(result=DataClassWithVarStringField(varField=test)) has failed, first blocker is DataClassWithVarStringField(varField=test)

Paring down my question since it was a bit much codewise 😅 . I'm struggling with how to deal with this *`Uncaught Kotlin exception: kotlin.native.IncorrectDereferenceException: illegal attempt to access non-shared kotlinx.coroutines.internal.DispatchedContinuation@2d8048 from other thread` *error. I've copied an implementation of the KaMPKit

NativeViewModel

and have my iOS network implementation done separately in an interface using

URLSession

. Is there anything within the Kotlin/Native concurrency model that makes calling a

URLSession

with a completion handler callback impossible? I'm pretty sure I've done everything I can to make my data state immutable.

class SearchViewModel(
    private val repository: SearchRepository,
    private val onSearchState: (SearchState) -> Unit
): KoinComponent {

    private val scope = MainScope(Dispatchers.Main)

    private val _searchStateFlow = MutableStateFlow(SearchState())

    init {
        ensureNeverFrozen()
        observeQueries(_searchStateFlow.value.query)
    }

    @OptIn(FlowPreview::class)
    @Throws(Exception::class)
    fun observeQueries(query: String) {
        _searchStateFlow.value = SearchState(
            query = query,
            isLoading = true)
        scope.launch {
            repository.searchGames(_searchStateFlow.asStateFlow())
                .collect { state ->
                    onSearchState(state)
                }
        }
    }
}

The error happens on the completion handler that is called in the

IOSSearchInteractor

's URLSession callback:

class IOSSearchInteractor: SearchInteractor {
    func searchGames(query: String, completion: @escaping (Result<String, Error>) -> Void) {

        var request ...
        let task = URLSession.shared.dataTask(with: request) { data, response, error in
            // error happens here on completion handler
            let str = String(decoding: data!, as: UTF8.self)
            completion(.success(str))

        }
        task.resume()
    }