How to configure NDK with Android Gradle plugin 0.7

The new Android gradle plugin (0.7) seems to include new support for the NDK, but in the documentation there is little to no mention of it (the only reference I found is a test called ndkSanAngeles).

It looks like gradle is looking for the NDK, which I have included in my PATH. However, building the project fails with

• What went wrong: Execution failed for task ':OGLTests:compileDefaultFlavorDebugNdk'. NDK not configured

How can I configure the NDK in gradle?

My current build.gradle looks like this:

task nativeLibsToJar(type: Zip, description: 'create a jar with native libs') {
    destinationDir file("$buildDir/native-libs")
    baseName 'native-libs'
    extension 'jar'
    from fileTree(dir: 'src/main/libs', include: '**/*.so')
    from fileTree(dir: 'src/main/libs', include: '**/gdb*')
    into 'lib/'
}

tasks.withType(JavaCompile) {
    compileTask -> compileTask.dependsOn nativeLibsToJar
}

dependencies {
    compile fileTree(dir: "$buildDir/native-libs", include: '*.jar')
}

android {
    compileSdkVersion 19
    buildToolsVersion '19.0.0'

    defaultConfig {
        minSdkVersion 14
        targetSdkVersion 19
        versionCode 1
        versionName "0.1"

    }
    buildTypes {
        release {
            runProguard false
        }
        debug {
           // jniDebugBuild true
            runProguard false
            debuggable true
        }
    }
    productFlavors {
        defaultFlavor {
            proguardFile 'proguard-rules.txt'
        }
    }
}

Thanks.