In my Decompose library, I see that starting from Kotlin version

1.4.20

the

maven-publish

plugin uploads

jar

files for root packages (named without any a suffix). But there is no

sources.jar

uploaded. As a result I can't enable JCenter sync, since sources are mandatory for packages with

jars

. E.g. this package has a

jar

file but does not have

sources.jar

file: https://dl.bintray.com/arkivanov/maven/com/arkivanov/decompose/decompose/0.1.4/ But e.g. this coroutines package has everything: https://jcenter.bintray.com/org/jetbrains/kotlinx/kotlinx-coroutines-core/1.4.2/ Questions: 1. Why there is no

jar

files uploaded for this package prior to Kotlin 1.4.20? (e.g. here). If there is no

jar

then it's ok to not have

sources.jar

. 2. Why there is no

sources.jar

uploaded in this case. Sources are uploaded fine for other non-root packages, e.g. the decompose-jvm.

I believe no sources jar is a bug with kotlin multiplatform & kotlin 1.4.21. I was able to include the sources jar manually to my common target by appending the artifact generated by

metadataSourceJar

gradle task in the publishing config

val kotlinMultiplatform by getting {
    artifactId = "project-id"
    artifact(tasks.getByName("metadataSourcesJar")) {
        classifier = "sources"
    }
}

Thanks! Looks like this helps.