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are you doing that on the settings file?

In the settings file. If I do it in the project build.gradle it works fine. But I would like to define it globally for all project (btw I tried setting it on rootproject as well)

maybe you can use other lambdas, like

gradle.beforeProject

or

gradle.projectsLoaded

unfortunately, doesn't help 😞

The easiest is, to not set it in code at all.

I was sure that was gonna help, but to my surprise the result is the same - group is accessible during sync, but empty during publishing - both project.group and rootProject.group. And the same error occurs. Even weirder - it breaks the publication for projects that worked before, but with a different error:

> Failed to publish publication 'maven' to repository 'mavenLocal'
   > Invalid publication 'maven': groupId ("com.example") is not a valid Maven identifier ([A-Za-z0-9_\-.]+).

It is a properties file, not Kotlin code

omg

😉

yeah, that helped for the second issue 😄 but still empty for the plugin project. I'm probably doing something stupid there as well...

Is it really a subproject, or is it a subbuild?

All 3 are included via include. Not via includeBuild

Do you maybe explicitly set it to empty in the plugin project?

looks like another plugin/config is overriding it to null

maybe

gradlePlugin

clause is doing sth like that...