Install this version:
emerge -a =dev-ruby/rex-2.0.13
If this version is masked, you can unmask it using the autounmask tool or standard emerge options:
autounmask =dev-ruby/rex-2.0.13
Or alternatively:
emerge --autounmask-write -a =dev-ruby/rex-2.0.13
# Copyright 1999-2020 Gentoo Authors # Distributed under the terms of the GNU General Public License v2 EAPI=8 USE_RUBY="ruby32 ruby33" #RUBY_FAKEGEM_RECIPE_TEST="rspec3" #RUBY_FAKEGEM_TASK_DOC="" #RUBY_FAKEGEM_BINWRAP="" inherit ruby-fakegem DESCRIPTION="A variety of classes useful for security testing and exploit development" HOMEPAGE="https://github.com/rapid7/rex/" LICENSE="BSD" SLOT="0" KEYWORDS="~amd64 ~arm ~x86" IUSE="" # doesn't seem to actually run any tests, fails without disabling RESTRICT=test ruby_add_bdepend "dev-ruby/filesize dev-ruby/jsobfu dev-ruby/json:2 =dev-ruby/metasm-1* =dev-ruby/nokogiri-1* dev-ruby/rb-readline"