# Copyright 2026 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=8

DESCRIPTION="Snapper snapshots around Portage transactions, snap-pac style"
HOMEPAGE="https://github.com/ursm/portage-snapper"
SRC_URI="https://github.com/ursm/${PN}/archive/refs/tags/v${PV}.tar.gz -> ${P}.tar.gz"

LICENSE="MIT"
SLOT="0"
KEYWORDS="~amd64"

RDEPEND="app-backup/snapper"

src_install() {
	emake DESTDIR="${D}" install
	einstalldocs
}

pkg_postinst() {
	# Enabling is a one-time manual step that touches nothing under
	# /etc/portage/, so only show the setup guide on a fresh install.
	# Repeating it on every upgrade would just be noise for users who
	# have already wired it up.
	if [[ -z ${REPLACING_VERSIONS} ]]; then
		elog "The scripts are installed, but /etc/portage/ is left untouched."
		elog "Enable portage-snapper manually:"
		elog
		elog "  1. Add to /etc/portage/bashrc:"
		elog "       source /usr/share/portage-snapper/hook.bash"
		elog
		elog "  2. Point /etc/portage/bin/post_emerge at it, e.g. as a symlink:"
		elog "       ln -s /usr/share/portage-snapper/post_emerge /etc/portage/bin/post_emerge"
		elog "     or call it from your own post_emerge wrapper."
		elog
		elog "Tune behavior in /etc/portage-snapper.conf. A configured snapper config"
		elog "is required (default: root)."
	fi
}