Install this version:
emerge -a =app-metrics/alertmanager-0.33.1
If this version is masked, you can unmask it using the autounmask tool or standard emerge options:
autounmask =app-metrics/alertmanager-0.33.1
Or alternatively:
emerge --autounmask-write -a =app-metrics/alertmanager-0.33.1
# Copyright 1999-2026 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
inherit go-module systemd
DESCRIPTION="Alertmanager for alerts sent by client applications such as Prometheus"
HOMEPAGE="https://github.com/prometheus/alertmanager"
SRC_URI="
https://github.com/prometheus/alertmanager/archive/v${PV}.tar.gz -> ${P}.tar.gz
https://github.com/prometheus/alertmanager/releases/download/v${PV}/${PN}-web-ui-${PV}.tar.gz
https://github.com/gentoo-golang-dist/alertmanager/releases/download/v${PV}/${P}-vendor.tar.xz
"
LICENSE="Apache-2.0 BSD BSD-2 MIT MPL-2.0"
SLOT="0"
KEYWORDS="~amd64 ~arm64"
# tests don't work due to "missing files"
RESTRICT+=" test"
BDEPEND="
>=dev-lang/go-1.25.0
dev-util/promu
"
DEPEND="
acct-group/alertmanager
acct-user/alertmanager
"
RDEPEND="${DEPEND}"
PATCHES=( "${FILESDIR}/0.33.0-promu-config.patch" )
src_prepare() {
default
# put UI assets in place
cp -a "${WORKDIR}"/dist ui/app || die
}
src_compile() {
promu build -v --prefix bin || die
}
src_install() {
dobin bin/*
dodoc {README,CHANGELOG}.md
insinto /etc/alertmanager/
newins doc/examples/simple.yml config.yml
keepdir /var/lib/alertmanager /var/log/alertmanager
systemd_dounit "${FILESDIR}"/alertmanager.service
newinitd "${FILESDIR}"/${PN}.initd ${PN}
newconfd "${FILESDIR}"/${PN}.confd ${PN}
fowners ${PN}:${PN} /etc/alertmanager /var/lib/alertmanager /var/log/alertmanager
}
acct-group/alertmanager acct-user/alertmanager
acct-group/alertmanager acct-user/alertmanager
>=dev-lang/go-1.25.0 dev-util/promu