I want to configure the maven publish plugin using shared logic in my buildSrc. But that would mean that I need to have the maven publish plugin in the class path of my buildSrc. How can I do that?

The maven-publish plugin comes bundled with Gradle. 🤔 It is already on the classpath when you depend on Gradle apis. Try

implementation(gradleApi())

in your dependencies if you dont have it already.

Worked, thanks! https://github.com/PaulWoitaschek/FlowPref/blob/master/buildSrc/src/main/kotlin/de/paulwoitaschek/flowpref/publish.kt