kde-apps/akonadi-config: new package, add 0

Essentially split out of kde-apps/akonadi.

This is now responsible for setting up default akonadiserverrc, with
some basic instructions for how to migrate from other backends.

In terms of optional RDEPEND IUSE, we can treat this like a metapackage
ensuring appropriate runtime dependencies.

Signed-off-by: Andreas Sturmlechner <[email protected]>

kde-apps/akonadi-config/akonadi-config-0.ebuild

@@ -0,0 +1,78 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit optfeature
+
+DESCRIPTION="Default Akonadi storage backend configuration"
+HOMEPAGE="https://userbase.kde.org/Tutorials/Shared_Database#Akonadi"
+S=${WORKDIR}
+
+LICENSE="public-domain"
+SLOT="0"
+KEYWORDS="~amd64 ~arm64"
+IUSE="+mysql postgres sqlite"
+
+REQUIRED_USE="|| ( mysql postgres sqlite )"
+
+RDEPEND="
+	!<kde-apps/akonadi-24.11.80
+	dev-qt/qtbase:6[mysql?,postgres?,sqlite?]
+	mysql? ( virtual/mysql )
+	postgres? ( dev-db/postgresql )
+"
+
+pkg_pretend() {
+	if [[ -n "${REPLACING_VERSIONS}" ]] || ! has_version "kde-apps/akonadi"; then
+		return
+	fi
+	for backend in sqlite postgres mysql; do
+		if ! use ${backend} && has_version "kde-apps/akonadi[${backend}]"; then
+			ewarn "Potential upgrade issue detected!"
+			ewarn "Previously: kde-apps/akonadi[${backend}] *** enabled ***"
+			ewarn "Now: kde-apps/akonadi-config[${backend}] *** disabled ***"
+			ewarn "Make sure any Akonadi user storage backends in ~/.config/akonadi/akonadiserverrc"
+			ewarn "have been migrated accordingly. To migrate an existing backend to a different"
+			ewarn "driver, run \`akonadi-db-migrator --newengine sqlite|mysql|postgres\`"
+			ewarn "To succeed, both drivers need to be enabled in dev-qt/qtbase USE - it is *not*"
+			ewarn "necessary to downgrade kde-apps/akonadi if you learn about this after upgrading."
+		fi
+	done
+}
+
+pkg_setup() {
+	# Set default storage backend in order: MySQL, SQLite, PostgreSQL
+	# reverse driver check to keep the order
+	use postgres && DRIVER="QPSQL"
+	use sqlite && DRIVER="QSQLITE"
+	use mysql && DRIVER="QMYSQL"
+}
+
+src_unpack() { :; }
+src_configure() { :; }
+src_compile() { :; }
+
+src_install() {
+	# Who knows, maybe it accidentally fixes our permission issues
+	cat <<-EOF > "${T}"/akonadiserverrc || die
+		[%General]
+		Driver=${DRIVER}
+	EOF
+	insinto /usr/share/config/akonadi
+	doins "${T}"/akonadiserverrc
+}
+
+pkg_postinst() {
+	elog "You can select the storage backend in ~/.config/akonadi/akonadiserverrc."
+	elog "Available drivers (by enabled USE flags) are:"
+	use mysql && elog "  QMYSQL"
+	use sqlite && elog "  QSQLITE"
+	use postgres && elog "  QPSQL"
+	elog "${DRIVER} has been set as your default akonadi storage backend."
+	elog
+	optfeature_header "The following optional database backends exist:"
+	optfeature "SQLite backend support" "${CATEGORY}/${PN}[sqlite]"
+	optfeature "MySQL backend support" "${CATEGORY}/${PN}[mysql]"
+	optfeature "PostgreSQL backend support" "${CATEGORY}/${PN}[postgres]"
+}

kde-apps/akonadi-config/metadata.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="project">
+		<email>[email protected]</email>
+		<name>Gentoo KDE Project</name>
+	</maintainer>
+</pkgmetadata>