On my arm64 board I got the following warning: The following keyword changes are necessary to proceed: (see "package.accept_keywords" in the portage(5) man page for more details) # required by dev-python/setuptools-30.4.0::gentoo # required by dev-python/pyxattr-0.5.5::gentoo # required by sys-apps/portage-2.3.0::gentoo[python_targets_python2_7,xattr] # required by virtual/package-manager-0::gentoo # required by @system # required by @world (argument) =dev-python/certifi-2016.9.26 ~arm64
newer version was stabilized finally