gradle - how do I build a jar with a lib dir with other jars in it ?

Question

In gradle - how can I embed jars inside my build output jar in the lib directory (specifially the lib/enttoolkit.jar and lib/mail.jar)?

Answer 1

Lifted verbatim from: http://docs.codehaus.org/display/GRADLE/Cookbook#Cookbook-Creatingafatjar

Gradle 0.9:

jar {
    from configurations.compile.collect { it.isDirectory() ? it : zipTree(it) }
}

Gradle 0.8:

jar.doFirst {
    for(file in configurations.compile) {
        jar.merge(file)
    }
}

The above snippets will only include the compile dependencies for that project, not any transitive runtime dependencies. If you also want to merge those, replace configurations.compile with configurations.runtime.

EDIT: only choosing jars you need

Make a new configuration, releaseJars maybe

configurations {
    releaseJars
}

Add the jars you want to that configuration

dependencies {
    releaseJars group: 'javax.mail', name: 'mail', version: '1.4'
    //etc
}

then use that configuration in the jar task outlined above.