Can't we use Java's ZipOutputStream?

This comes from shadow jar dependency, because it is using in transform interface functions

This looks wrong to me. Can you explain what's your goal here? There should be a more a robust solution.

There was problem with publication, because publish task doesnt wait grease tasks, so grease task will be executed after publication and final aar will be incorrect. Therefore i made publish task to execute after grease task for common cases

The main problem is that people should be able to rely on bundle AAR task in all scenarios, without tricks like this one which only solves the publication use-case. We can fix this later though, I'll open an issue with some ideas without using finalizedBy.

Another problem is that code above may crash at component.get(). You can do component.getOrNull() but then it may be added later and you don't catch that.

Maybe it'd be better to iterate over components?

project.components.matching { it.name == creationConfig.name }.all {
    tasks.matching { it.name == "generate${creationConfig.name.capitalize()}PomFileForPublication" }.configureEach {
        mustRunAfter(greaseShadowTask)
    }
}

Maybe, but there is so many publish tasks and we can skip one of them. Also we are configuring grease after evaluation so i think everything should be good