def srcDelomboked = 'build/src-delomboked'
task delombok {
    description 'Delomboks the entire source code tree'
    def srcJava = 'src'

    inputs.files file(srcJava)
    outputs.dir file(srcDelomboked)

    doLast {
        def collection = files(configurations.compile + configurations.testCompile)
        def sumTree = collection + fileTree(dir: 'bin')

        ant.taskdef(name: 'delombok', classname: 'lombok.delombok.ant.Tasks$Delombok',
                classpath: configurations.compile.asPath +
                        configurations.testCompile.asPath)
        ant.delombok(from: srcJava, to: srcDelomboked, classpath: sumTree.asPath)
    }
}