On Tue, Jun 16, 2015 at 8:35 AM, Matthias Güdemann <matthias.guedemann at googlemail.com> wrote: > ok, from reading through the archives, I came across > "builtin.unsafe_promise_unique/2" Ninja'd. :-) > > Is this the way to go? It's a workaround for the above limitation. Whether it solves your problem is a different question. Cheers, Mark.