Setting up a multi-platform Compose library project I am just trying to set up a multi-platform Compose library project which I want to install in mavenLocal. I started with a multi-platform Kotlin (Kotlin Gradle DSL) library project template generated by IntelliJ but then I somehow failed to properly add the necessary Compose dependencies. At the moment I am only targeting JVM (desktop) and Android. Can someone show me what is necessary to go from that template to a working one with support for Compose? I am anything else but a Gradle expert.

Hi @Michael Paus, I may be able to help.

Whatever I do it does not seem to be able to resolve “org.jetbrains.compose”. I only get

Plugin [id: 'org.jetbrains.compose'] was not found in any of the following sources:

And where did you define Versions.Kotlin and Versions.Compose.GoogleAndroid?

Have you applied the compose plugin like this:

id("org.jetbrains.compose")

on the build.gradle you imported the compose dependencies, without a specific version? Usually this plugin requires an explicit version parameter, like:

id("org.jetbrains.compose") version "1.0.1"

but you can omit it by declaring a resolution strategy on `settings.gradle.kts`:

pluginManagement {
    repositories {
        google()
        gradlePluginPortal()
        mavenCentral()
        maven("<https://maven.pkg.jetbrains.space/public/p/compose/dev>") // <- is is required in all modules that use compose plugin too
    }

    resolutionStrategy {
        eachPlugin {
            if (requested.id.id == "org.jetbrains.compose") {
                useModule("org.jetbrains.compose:compose-gradle-plugin:1.0.1")
            }
        }
    }
}

This way you keep the version on all modules in sync

That was it (so far)! My whole code compiles and the library was successfully published to maven local. Now let’s see whether it actually works when I try to use it? Thanks a lot @darkmoon_uk and @Guilherme Cordeiro . The problem was the missing resolution strategy for

"org.jetbrains.compose"

I also left out the block

composeOptions {
        kotlinCompilerVersion = Versions.Kotlin // Removing this broke my compilation, despite it being @Deprecated YMMV
        kotlinCompilerExtensionVersion = Versions.Compose.GoogleAndroid
    }

and tried with the defaults and I am also wondering why Chris is using the plugin

id("com.android.library")

whereas IntelliJ generated a template with

id("com.android.application")

.