Enabling Groovy invokedynamic ("indy") support in a Gradle build

build.gradle

compileJava {
    sourceCompatibility = 1.7
    targetCompatibility = 1.7
}
 
compileGroovy {
    groovyOptions.optimizationOptions.indy = true
}
 
dependencies {
    compile 'org.codehaus.groovy:groovy-all:2.2.2:indy'
}

UsesGroovyShell.groovy

// ....

def compilerConfig = new CompilerConfiguration()
compilerConfig.optimizationOptions.indy = true
 
def shell = new GroovyShell(compilerConfig)