Handy Gradle build file snippet for creating a Scala project layout

build.gradle

// Based on http://mrhaki.blogspot.co.uk/2009/11/using-gradle-for-mixed-java-and-groovy.html
// Updated for Gradle 1.0
// Thanks Mr Haki!!

apply plugin: 'scala'

task initProject(description: 'Initialize project directory structure.') << {
    // Default package to be created in each src dir.
    def defaultPackage = 'com/robbyp/project'
    
    ['java', 'scala', 'resources'].each {
        // convention.sourceSets contains the directory structure
        // for our Scala project. So we use this struture
        // and make a directory for each node.
        sourceSets*."${it}".srcDirs*.each { dir ->
            def newDir = new File(dir, defaultPackage)
            logger.info "Creating directory $newDir"  // gradle -i shows this message.
            newDir.mkdirs()  // Create dir.
        }
    }
}