As noted at the URL: " Since OTP 18.0, Erlang/OTP is released under Apache License 2.0. The older releases prior to 18.0 were released under Erlang Public License (EPL), a derivative work of the Mozilla Public License (MPL). An English translation of EPL can be found here. "
Fixed, thanks for the report: commit c458d4b29e4a21ec25f8303a62e843bfeb8226f6 Author: Dirkjan Ochtman <dirkjan@ochtman.nl> Date: Fri May 13 12:15:19 2016 +0200 dev-lang/erlang: update LICENSE to Apache-2.0 (fixes bug 582876) Package-Manager: portage-2.2.28