Can't publish a pre-v7 plugin on the portal

[Vampire (Björn Kautler)]

Gradle pluginBundle, gradlePlugin, and website

gradlePlugin { ... } is not part of the com.gradle.plugin-publish plugin, but part of the java-gradle-plugin which is built-in into Gradle and thus depends on the version of Gradle not of the plugin publish plugin. In Gradle 6.8.2 there is no website property in the extension of the java-gradle-plugin, that was only added in 7.6. That’s btw. also what the docs at Gradle - How do I publish my plugin? say in the Examples section: Plugin Publish plugin v1.0.0 simplifies the configuration of plug…