From Magazine HD:

“Room and The Childhood of a Leader, destribuídos by NOS, will compete in LEFFEST as part of the official selection. … The Childhood of a Leader , in turn, is the first feature film signed by Brady Corbet and with the participation of Robert Pattinson and Bérénice Bejo.”

Hopefully NOS will also distribute the film in Portugal some time in 2016 *fingerscrossed*.  Recently they’ve distributed “Life” and “Maps to the Stars”, so clearly they are big Rob fans.