Is there someone who knows how to release Kotlin m...

# multiplatform

[addamsson]

Is there someone who knows how to release Kotlin multiplatform projects to Maven Central using the new kotlin-multiplatform plugin?

[thevery]

Doesn't work out of the box for Android now, see https://youtrack.jetbrains.com/issue/KT-27535

[addamsson]

I'm not programming for Android

[addamsson]

I just want to release for jvm and js platforms

[addamsson]

I'm working on a library

[hallvard]

The matter was discussed further up in this group earlier today. I publish to a maven repo from my mpp using the maven-publish plugin, thus:

plugins {
    id 'kotlin-multiplatform' version '1.3.0'
//    id 'maven-publish' // cf. underneath
}

group("com.sannsyn")
version("2.0.0-SNAPSHOT")

// this line cannot appear *before* the group and version lines above ...
apply plugin: 'maven-publish'

... and further down in the gradle file:

publishing {
    publications {
        maven(MavenPublication) {
            groupId project.group
            artifactId project.name
        }
    }
...
}

[josephivie]

I'll have to do that too - I'll let you know when I figure it out. As far as I can tell, you can just apply the 'maven-publish' plugin and it will add completely working tasks like publishToMavenLocal. I don't know in particular how to configure it for Maven Central, but you might be able to do Bintray using the Bintray plugin.

[hallvard]

Actually, the complete publishing clause that I use looks like this:

publishing {
    publications {
        maven(MavenPublication) {
            groupId project.group
            artifactId project.name
        }
    }
    repositories {
        maven {
            credentials {
                username "usernameHere"
                password "somethingSecret"
            }
            def releasesRepoUrl = "<https://mvn.host.com/repository/releases/>"
            def snapshotsRepoUrl = "<https://mvn.host.com/repository/snapshots/>"
            url = version.endsWith('SNAPSHOT') ? snapshotsRepoUrl : releasesRepoUrl
        }
    }
}

[hallvard]

So maybe it's just a matter of defining the correct maven central?

[addamsson]

this is not enough

[addamsson]

for maven central you need javadoc and sources as well

[addamsson]

and you can't use javadoc in a common project

[addamsson]

you also need a lot of other stuff like signing, scm url, etc

[addamsson]

https://central.sonatype.org/pages/gradle.html

[addamsson]

This is the docs on it

[addamsson]

but it doesn't work

[addamsson]

I have a multiplatform project which uses the old model

[addamsson]

and I had to hack around it to be able to publish to maven cetnral

[addamsson]

but with the new plugin it is not working at all

[addamsson]

I'll take another stab at it later with the maven-publish plugin

[hallvard]

I'm just publishing to my own Sonatype server, so I need no javadocs. Maybe that's why it works.

[addamsson]

yep

[addamsson]

but maven central won't accept artifacts without sources and javadoc

[addamsson]

do you know someone who publishes kotlin multiplatform projects to maven central?

[hallvard]

Sorry, no. You'll have to ask in public ...

[addamsson]

where do you think I should ask?

[addamsson]

I thought this Slack channel is the place to ask 😞

[hallvard]

Yes, thats what I meant.

[hallvard]

I know that. But did you specify the javadoc demands (apart from within this thread)? Gradle can be told to generate javadoc as well. But I'm not the right person to ask about this. In your place, I'd ask in #multiplatform again, with as much detail as possible.

[addamsson]

I see

[addamsson]

thanks, anyway!