complex-app {
    something="This value comes from complex-app's complex2.conf"

    # here we want a simple-lib-context unique to our app
    # which can be custom-configured. In code, we have to
    # pull out this subtree and pass it to simple-lib.
    simple-lib-context = {
        simple-lib {
            foo="This value comes from complex-app's complex2.conf in its custom simple-lib-context"
            whatever = "This value comes from complex-app's complex2.conf in its custom simple-lib-context"
        }
    }
}
