Yes, Gradle doesn't know about those 4.0.27 changes yet. Feel free to pester them to add that in an upcoming Gradle release.
For now, you can create a custom groovy task, sort of like where Grails is possibly headed: https://github.com/apache/grails-core/blob/groovydoc-tool-rewrite/buildSrc/src/main/groovy/org/apache/grails/internal/build/GrailsGroovydocWorker.groovy Or, just call the commandline or Ant task making sure that Groovy 4.0.27 (groovy, groovy-groovydoc, groovy-ant if using ant) is on the classpath: tasks.register('runGroovyDoc', JavaExec) { classpath = sourceSets.main.runtimeClasspath mainClass = 'org.codehaus.groovy.tools.groovydoc.Main' args = ['-d', 'build/groovydoc', '-sourcepath', sourceSets.main.groovy.srcDirs.join(':'), '-javaVersion', 'JAVA_17', '.'] } tasks.register('runGroovyDocAnt') { doLast { ant.taskdef(name: 'groovydoc', classname: 'org.codehaus.groovy.ant.Groovydoc', classpath: sourceSets.main.runtimeClasspath.asPath) ant.groovydoc( destdir: 'build/groovydocant', sourcepath: sourceSets.main.groovy.srcDirs.join(':'), packagenames: '*', javaVersion: 'JAVA_17') { } } } Cheers, Paul. On Thu, May 29, 2025 at 5:07 AM Per Nyfelt <p...@alipsa.se> wrote: > > Hi, > > I am keen to use the new javaVersion property added to GroovyDoc in 4.0.27 > but cannot figure it out. According to the gradle documentation, "The version > of the Groovydoc that is used, is the one from the Groovy dependency defined > in the build script." so i did this: > > add implementation `"org.apache.groovy:groovy-ant:4.0.27"` to dependencies > > add a groovydoc config > > groovydoc { > docTitle = "${project.name} ${project.version}" > windowTitle = "${project.name} ${project.version}" > link 'https://docs.oracle.com/en/java/javase/21/docs/api/', 'java.' > javaVersion = 'JAVA_21' > } > > But gradle is unhappy with this: > > > Could not set unknown property 'javaVersion' for task > > ':matrix-spreadsheet:groovydoc' of type > > org.gradle.api.tasks.javadoc.Groovydoc. > > Has anyone got this to work and could share some insights? > >