Install this version:
emerge -a =dev-python/cxxfilt-0.3.0
If this version is masked, you can unmask it using the autounmask tool or standard emerge options:
autounmask =dev-python/cxxfilt-0.3.0
Or alternatively:
emerge --autounmask-write -a =dev-python/cxxfilt-0.3.0
# Copyright 1999-2022 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
DISTUTILS_USE_PEP517=setuptools
PYTHON_COMPAT=( python3_{10,11,12,13,14,15} )
inherit distutils-r1 pypi
DESCRIPTION="Python interface to c++filt / abi::__cxa_demangle"
HOMEPAGE="https://github.com/afq984/python-cxxfilt"
LICENSE="BSD-2"
SLOT="0"
KEYWORDS="~amd64 ~arm64 ~x86"
RESTRICT="test"
REQUIRED_USE="${PYTHON_REQUIRED_USE}"