Install this version:
emerge -a =dev-perl/SVG-Graph-0.20.0
# Copyright 1999-2021 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
DIST_AUTHOR=ALLENDAY
DIST_VERSION=0.02
inherit perl-module
DESCRIPTION="Visualize your data in Scalable Vector Graphics (SVG) format"
LICENSE="Artistic-2"
SLOT="0"
KEYWORDS="amd64 x86"
RDEPEND="
dev-perl/Math-Derivative
dev-perl/Math-Spline
>=dev-perl/Statistics-Descriptive-2.6
dev-perl/SVG
>=dev-perl/Tree-DAG_Node-1.04
"
BDEPEND="${RDEPEND}
"
dev-perl/Math-Derivative dev-perl/Math-Spline >=dev-perl/Statistics-Descriptive-2.6 dev-perl/SVG >=dev-perl/Tree-DAG_Node-1.04
dev-perl/Math-Derivative dev-perl/Math-Spline >=dev-perl/Statistics-Descriptive-2.6 dev-perl/SVG >=dev-perl/Tree-DAG_Node-1.04