Hi. Maybe this is a stupid question, but I am really confused - how do I set a multiplatform version in my lubrary? So far I’ve been using:

plugins {
    kotlin("multiplatform")
    kotlin("native.cocoapods")
    kotlin("plugin.serialization") version "1.6.10"
    id("com.android.library")
    id("maven-publish")
}

But now I need to make it explicit to use 1.9.10. I tried:

plugins {
    kotlin("multiplatform") version "1.9.10"
    kotlin("native.cocoapods")
    kotlin("plugin.serialization") version "1.6.10"
    id("com.android.library")
    id("maven-publish")
}

But this results in an error:

Error resolving plugin [id: 'org.jetbrains.kotlin.multiplatform', version: '1.9.10']
> Plugin request for plugin already on the classpath must not include a version

But I don’t specify the version anywhere else in my code. How does it figure out which version it’s using and how can I know which that is and how to change it?

I’d suspect you have defined KMP version in either root build.gradle or settings.gradle

I am getting the Xcode 15 linker issue which was supposedly fixed in 1.9.10, so I don’t think it does use the latest… I don’t see a version configured anywhere.

buildscript {
    repositories {
        gradlePluginPortal()
        google()
        mavenCentral()
    }
    dependencies {
        classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:1.6.10")
        classpath("com.android.tools.build:gradle:7.0.4")
    }
}

Would any of these dependencies have any impact on the Multiplatform version? Sorry, I’m more of an iOS developer, not really good with Gradle.

I don’t see KMP plugin in your dependencies - where are those defined?

This is in my shared folder build.gradle.kts:

import org.jetbrains.kotlin.gradle.plugin.mpp.apple.XCFramework

plugins {
    kotlin("multiplatform")
    kotlin("native.cocoapods")
    kotlin("plugin.serialization") version "1.6.10"
    id("com.android.library")
    id("maven-publish")
}

And this is your root build.gradle.kts? https://kotlinlang.slack.com/archives/C3PQML5NU/p1695986705916549?thread_ts=1695986426.880019&cid=C3PQML5NU

It looks like adding this in the main build.gradle.kts might work:

plugins {
    kotlin("multiplatform").version("1.9.10").apply(false)
}

I’m not sure because it complains about something else now that has changed .

There's a root (on project's root) build.gradle file where normally the plugins for the rest of modules are set. Setting the kmp plugin with version there will make sure rest of modules are using same version of plugin

Yeh, i can see it does it like this now. I created a new empty project and it works the way you’re describing. My project was created around 2 years ago and it looks completely different. I might just create a new project and copy over all the code.

so in your root’s

build.gradle

you can set something like:

// <https://youtrack.jetbrains.com/issue/KTIJ-19369>
@Suppress("DSL_SCOPE_VIOLATION")
plugins {
  // other plugins here
  kotlin("multiplatform").version("1.9.10").apply(false)
}

It looks like adding this:

plugins {
    kotlin("multiplatform").version("1.9.10").apply(false)
}

to the top of build.gradle.kts in the shared folder helped. Anyway, thank you.