“ The Incomer ,” Louis Paxton’s debut feature starring Domhnall Gleeson , has been picked up by Focus Features for international rights and is now also set to open this year’s Edinburgh Film Festival . The Scottish folk-comedy-drama, focussing on the clash between a pair of isolated siblings and a government worker on a remote, windswept island, premiered in Sundance, where it won the NEXT Innovator Award. Alongside Gleeson, Gayle Rankin (“House of The Dragon,” “Glow”) and Grant O’Rourke (“