Is the process of publishing a MPP library that supports both macOS and Windows documented somewhere? I know its something kotlinx.coroutines does, but the gradle setup there is quite complicated to me, plus I'm less and less familiar with Groovy based gradle as I use almost only Gradle Kotlin DSL since last year. I'd like to ensure my multiplatform publication can resolve using gradle metadata in the consumer projects dependeing on the targets, but I can't run the usual publishing task since I won't be able to compile for Windows on my Mac. A clear guidance or an example I can test with a dummy bintray repo, would be helpful.

How can I use protobuf generated java code in JVM target in multiplatform ?

I'm trying to use kotlin

Result

in my K/Mpp project and I'm facing a lot of

Result cannot be used as a return type

warnings.

freeCompilerArgs = ["-Xallow-result-return-type"]

makes it so it can compile just fine, but the warnings are still there which is pretty annoying. Am I missing some other flag which would me allow to get rid of these IDE warnings?

what is the current state of the new multiplatform plugin. is it possible to have several JVM modules (say jvm, jdk8, jdk11) and share some code?

does anyone have an example of an MPP (not an app project) w/ an android library target?

let's say you wanted to create an iOS module with some UI that is built upon a kotlin MPP. and let's say you needed to integrate that module with an iOS app that already integrates a kotlin MPP. any thoughts on how to achieve something like that?

Hey guys, if I wanted to call some kotlin-native compiled libraries from kotlin-jvm, is JNA still the best way to do it?

What would be the build.gradle.kts equivalent of

androidMain {
            dependencies {
                implementation kotlin("stdlib")
            }
        }

?

Using inline classes with expect doesn’t let me use

val

with “Inline class cannot have properties with backing fields”, even if all implementations provide getters. Is there a way to do this? Next step is to try the vals as extensions.

Anyone know what happened to KotlinxSerializer in Ktor 1.2.2? Previously I could do:

HttpClient {
      install(JsonFeature) {
           serializer = KotlinxSerializer()

But after updating the KotlinxSerializer class is not found

Has anyone already written a multiplatform, flow-based sharedpreferences/userdefaults?

How? Error is here:

...
  iosX64("ios") {
        binaries {
            framework {
                freeCompilerArgs.add("-Xobjc-generics")
            }
        }
    }
    sourceSets {
        commonMain {
            dependencies {
...

Running into a "Cyclic dependency in library graph" error while compiling, even though it does not appear to be a cyclic dep. I have lib A and lib B. Both are published KMP artifacts. B depends on A. My project depends on A & B. The cyclic dep error happens for lib B. Only happens for native. JVM compiles fine. Any ideas?

Friends. Collecting multiplatform. I do everything on this link: https://kotlinlang.org/docs/reference/native/cocoapods.html In principle, all the rules, the library was assembled, POD was exported. But when it connected to the Xcode project - I see errors:

Undefined symbols for architecture x86_64:
  "_sqlite3_bind_text16", referenced from:
      _SQLiter_SQLiteStatement_nativeBindString in app(combined.o)
  "_sqlite3_bind_int64", referenced from:
.....

Solved🎉

Quick question, is there any K/Mp implementation of WeakReference?

Any way to use inline classes from Swift? I'm thinking about using inline classes for SQLDelight's primary key. However, it looks like inline classes are not visible from Swift, and are converted to Any if it appears as a method parameter. So my first idea is to use interface, but according to the Kotlin document, inline classes remain wrapped if it is represented as interface.

kotlin
// all API surface uses this interface
interface SomeId

inline class SomeIdImpl(val value: String): SomeId

I'm wondering if I should stick to primitives.

Friends help me please. When I build application to iOS emulator then all correct and work. But if build for device then build failed with error that all my classes unresolved.

...
Unresolved reference: HttpClient
Unresolved reference: Job
Unresolved reference: HttpRequestBuilder
Unresolved reference: io
...
> Task :app:linkDebugFrameworkIos_32 FAILED
FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:linkDebugFrameworkIos_32'.
> Process 'command '/Library/Java/JavaVirtualMachines/jdk1.8.0_121.jdk/Contents/Home/bin/java'' finished with non-zero exit value 1

What wrong? Solved 🎉

Hi. anyone has solved the problem of swift having mutation errors when using kotlin objects?

is it documented anywhere which iOS SDK classes there are built-in bindings for?

so based on this: https://github.com/JetBrains/kotlin-native/blob/master/platformLibs/src/platform/ios/UIKit.def, in theory it should be possible to assemble a simple UIViewController in an iOS source set?

anyone dealt with "Could not build Objective-C module 'shared'" in iOS project? shared is my kotlin module. Have the framework added and get this when I try to import the module. I get this error in common.h:

Cannot find protocol declaration for 'CommonKotlinCoroutineContextElement'; did you mean 'CommonKotlinCoroutineContextKey'?

has anyone figured out how to

apply plugin: 'kotlin-android'

in a MPP library?

Anyone have success with the kotlin xcode plugin? I install it and load the bundle, then xcode immediately closes. It does not seem to be loaded when I reopen. There is no syntax highlighting/ breakpoints.

Are there best practices on when to use expect/actual or sometimes we can just use interfaces?

Hi friends! Why breakpoints not working in inline functions? function "subscribe" worked but not stopped. In first picture breakpoint not worked. At next picture not worked too

I may have found a bug with kotlin native. I have the following:

type alias Bar = (String) -> Any
fun test(foo: Any) {
    if (foo is Function<*>) {
         (foo as Bar)("test")
    }
}

On JVM the conditional will be true when passing in a function. On Native it is false.

For Kotlin multiplatform projects, what's the correct way to access test resources from a test class? The working directory seems to most of the time be the project directory, although that doesn't seem to be the case when running via drone.io. I tried javaClass.getResource methods but that seems to only list class directories, not resource directories.

I'm trying to parse a Json in a backthread on native using kotlinx.serializer, but it fails with InvalidMutability exception. it used to work just fine with kotlin 1.3.30 and serialization 10.0 but fails at 1.3.41/11.1. Do you guys know if anything important changed in serialization between these two versions?