Install this version:
emerge -a =dev-perl/Set-IntSpan-1.190.0# Copyright 1999-2022 Gentoo Authors # Distributed under the terms of the GNU General Public License v2 EAPI=8 DIST_AUTHOR=SWMCD DIST_VERSION=1.19 inherit perl-module DESCRIPTION="Manages sets of integers" SLOT="0" KEYWORDS="~alpha amd64 ~arm64 ~hppa ~ppc ~riscv x86"