Install this version:
emerge -a =media-sound/jackminimix-0.2.1
If this version is masked, you can unmask it using the autounmask tool or standard emerge options:
autounmask =media-sound/jackminimix-0.2.1
Or alternatively:
emerge --autounmask-write -a =media-sound/jackminimix-0.2.1
# Copyright 2022 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
DESCRIPTION="a simple mixer for the Jack with an OSC control interface."
HOMEPAGE="https://www.aelius.com/njh/jackminimix/"
LICENSE="GPL-2"
SLOT="0"
KEYWORDS="~amd64 ~x86"
IUSE=""
SRC_URI="https://github.com/njh/${PN}/releases/download/${PV}/${P}.tar.gz"
RDEPEND="virtual/jack
media-libs/liblo"
DEPEND="${RDEPEND}"
DOCS=( AUTHORS COPYING NEWS README )