So groovy doc uses javaparser which has a way to set the language level. If you specify groovydoc to a newer version, is there a way to set the language level for the java parser? This is typically done with

StaticJavaParser.getConfiguration().setLanguageLevel(ParserConfiguration.LanguageLevel.JAVA_17)

but i'm not sure how to do this with gradle's groovydoc task. Is this a groovydoc change or a gradle change?

I'd say both. Looking at https://docs.groovy-lang.org/docs/next/html/documentation/groovydoc.html#Groovydoc-Ant I don't see a way to set the language level, so Gradle also cannot set it, as it uses that task.

I'm working with Paul from Groovy already to fix reproducibility of groovydoc, so I'll first have a conversation with him on this. thank you!