Install this version:
emerge -a =dev-scheme/guile-json-4.7.3-r100
If this version is masked, you can unmask it using the autounmask tool or standard emerge options:
autounmask =dev-scheme/guile-json-4.7.3-r100
Or alternatively:
emerge --autounmask-write -a =dev-scheme/guile-json-4.7.3-r100
# Copyright 1999-2024 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
GUILE_COMPAT=( 2-2 3-0 )
inherit guile
DESCRIPTION="JSON module for Guile"
HOMEPAGE="https://savannah.nongnu.org/projects/guile-json/"
SRC_URI="http://download.savannah.nongnu.org/releases/guile-json/${P}.tar.gz"
LICENSE="GPL-3+"
SLOT="0"
KEYWORDS="~amd64 ~x86"
REQUIRED_USE="${GUILE_REQUIRED_USE}"
RDEPEND="${GUILE_DEPS}"
DEPEND="${RDEPEND}"