Install this version:
emerge -a =dev-perl/Linux-Distribution-0.230.0
If this version is masked, you can unmask it using the autounmask tool or standard emerge options:
autounmask =dev-perl/Linux-Distribution-0.230.0
Or alternatively:
emerge --autounmask-write -a =dev-perl/Linux-Distribution-0.230.0
# Copyright 1999-2021 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
DIST_AUTHOR=CHORNY
DIST_VERSION=0.23
inherit perl-module
DESCRIPTION="Perl extension to detect on which Linux distribution we are running"
SLOT="0"
KEYWORDS="~amd64 ~x86"
RDEPEND=""
BDEPEND="${RDEPEND}
dev-perl/Module-Build
test? ( virtual/perl-Test-Simple )
"