All ebuilds: LICENSE="|| ( LGPL-3 LGPL-2.1 )" What what I read, nettle used to be dual licensed under the GPLv2-or-later and LGPLv2.1 or later, but not anymore. https://www.lysator.liu.se/~nisse/nettle/nettle.html#Copyright At the top of most source files: GNU Nettle is free software: you can redistribute it and/or modify it under the terms of either: * the GNU Lesser General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. or * the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. getopt.c, getopt.h and getopt_int.h are under the LGPLv2.1-or-later Some files are licensed under pushover terms or are public domain, but those have the copyright notice in the license header. Therefore, it should be: LICENSE="|| ( GPL-2+ LGPL-3+ )"