Install this version:
emerge -a =dev-perl/XML-Simple-DTDReader-0.40.0# Copyright 1999-2021 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
DIST_AUTHOR=ALEXMV
DIST_VERSION=0.04
inherit perl-module
DESCRIPTION="Simple XML file reading based on their DTDs"
SLOT="0"
KEYWORDS="~amd64 x86"
RDEPEND="
>=dev-perl/XML-Parser-2.340.0
"
BDEPEND="${RDEPEND}
"