Unable to publish .aar when jvm publication is included in Kotlin Multiplatform library

[y9vad9]

Versions

Kotlin version: 1.9.20 – 2.0.0-Beta2
Publish plugin version: 0.25.3 – 0.26.0
Gradle version: 8.5

Description

I'm trying to publish my library with three targets: js, jvm and android, but android target is not publishing while jvm is included. When I remove jvm from the build, android target seems to be publishing normally.

build.gradle.kts

import org.jetbrains.kotlin.gradle.dsl.ExplicitApiMode

plugins {
    kotlin("multiplatform")
    id("com.android.library")
    id("com.vanniktech.maven.publish")
}

kotlin {
    jvm {
        testRuns.named("test") {
            executionTask.configure {
                useJUnitPlatform()
            }
        }
    }

    androidTarget()

    js {
        browser {
            commonWebpackConfig {
                cssSupport {
                    enabled.set(true)
                }
            }
        }
    }
    jvmToolchain(11)

    explicitApi = ExplicitApiMode.Strict
}


android {
    compileSdk = libs.versions.android.compile.sdk.get().toInt()
    namespace = "io.timemates.credentials"

    defaultConfig {
        minSdk = libs.versions.android.min.sdk.get().toInt()
    }
    compileOptions {
        sourceCompatibility = JavaVersion.VERSION_11
        targetCompatibility = JavaVersion.VERSION_11
    }
}

mavenPublishing {
    coordinates(
        groupId = "io.timemates.credentials",
        artifactId = "credentials-manager",
        version = System.getenv("LIB_VERSION") ?: return@mavenPublishing,
    )

    pom {
       // ommited
    }
}

publishing {
    repositories {
        maven {
            name = "TimeMates"

            url = uri(
                "sftp://${System.getenv("SSH_HOST")}:22/${System.getenv("SSH_DEPLOY_PATH")}"
            )

            credentials {
                username = System.getenv("SSH_USER")
                password = System.getenv("SSH_PASSWORD")
            }
        }
    }
}

Steps to reproduce

1. Open project from sources.
2. Run publishToMavenLocal/ publishAllPublicationsTo.. / publish (but needs configuration, result is the same)
3. Check maven local folder for .aar

---

4. Remove jvm from build as a target
5. Publish again and check maven local folder

[gabrielittner]

You need to enable publishing for the Android target inside the Kotlin DSL: https://kotlinlang.org/docs/multiplatform-publish-lib.html#publish-an-android-library

We can add this directly to the plugin though so that it won't be needed anymore in the future.

[y9vad9]

You need to enable publishing for the Android target inside the Kotlin DSL: https://kotlinlang.org/docs/multiplatform-publish-lib.html#publish-an-android-library

We can add this directly to the plugin though so that it won't be needed anymore in the future.

Oh, thanks. But yet no answer why does it work without jvm subsystem included 👀.

Anyway, would be great to have it by default

[gabrielittner]

Maybe the Kotlin Multiplatform plugin automatically enables the Android publishing if there is no jvm target. Either way I'll add this in the next release so that it'll always work by default