Revert "dev-db/clickhouse: remove last-rited pkg"

This reverts commit 9d5b201c76a925aaf2bd56c57a116a20ff226806.

This got potentially new maintainer

Signed-off-by: Mikle Kolyada <zlogene@gentoo.org>

14 files changed, 1704 insertions, 0 deletions

diff --git a/dev-db/clickhouse/Manifest b/dev-db/clickhouse/Manifest
new file mode 100644
index 000000000000..4c1396c38ae9
--- /dev/null
+++ b/dev-db/clickhouse/Manifest
@@ -0,0 +1,8 @@
+DIST cctz-4f9776a.tar.gz 290009 BLAKE2B 532eb7d590f9814c05cc7fdd3c75efe0a6b3f81d85201b14163a9600dd858c4fbac592270d0afccd7d5eef0080d7e70e9d716023bdb60d55479585e2cd3d3f59 SHA512 ba0dfc404cc70f03ef2be29fa3b0c70ea881c92a92525ea4ba1b5bcfc9e45df1b62a5eec180f498293e64bdd5cb9b41f97361cbb7e8baf299dcfdcd1557ca205
+DIST clickhouse-18.10.3.tar.gz 6136661 BLAKE2B 5564bbe85f4ca43f18df702148af0e4e5b5a8826994d90f29beb3a37cdbeb36f9d3ec77d9c7bc6f843e7586e5441aeb0937548eb5eb61d27cecc5790d8c21a5b SHA512 c78386922388cf910a995b569724eb22fc41ab60e765a4d3644c4a48d8b9a67ef28b7e375186b2eb00c43b4f06e90783084f4ac4d3789f1b6e4251ee30e8833c
+DIST clickhouse-18.12.17.tar.gz 6495521 BLAKE2B 00dfb823b9e36923beb50a88bee88af3918bedc7b20079785699a42e36e52f32739f786bd78c5b350f58ae59251e3846da6202d04e24e9a750c92e16065cc395 SHA512 876c5fb6011c65b8ec201126678dad6f5de3430b7d320316ced5c6d22e8086ce337d20b73badbd053bf141097b8fe6cd94910ed607b4bbedb681cfa7921d1fb6
+DIST clickhouse-18.6.0.tar.gz 5852534 BLAKE2B 5634fd26907b21d4a35cff3ed816696205be4aff1cdd1acfe222e24214b1842eb18a4e499e888b0d92b78f5c3023c2962a385af2c0ea889055e473dfa0198bf5 SHA512 e8ea2d4457122513cad47b1cdb2a58dd2ffaec77a7a08bf82179aca12a369d39970520a995bb5db2e5ea4b0939da827b7d4b1f3929cf71c149c965438ebb3633
+DIST clickhouse-19.13.1.11.zip 11502726 BLAKE2B c2788702a2c27c995abc072a94f3945ed6f9039fe0c7840312a86987faf52d2f7801d531e89a02848fa8ee1319247c41de0f3ad0c0cb51c1df1dbcfca3bd3b0a SHA512 095a0e63eff6989ea1f70fac593069e1cdb6ea207a99d8cfd610c4eb8f3f7411a784d9f100c9fc899898e68dd88dd54bec3c136764793c8cae986d920a651f8c
+DIST clickhouse-19.15.2.2.zip 11425217 BLAKE2B 3a2288d771cd92dc283713a44df84df8c3c946ef92efd781d7619c8ffc0d7a3884f1a988c81f1703a7d373e78e413bdaea0fd100cebf7090be9bba16779209ff SHA512 029376b9d540c592d30a32457deb9e605d512fc448eb3dc6896b0ca48a5e92f390ef2dc3a4ea63ce19c264a8b2810ff952e95a6c7a8d4506f733ac6253c079d3
+DIST clickhouse-19.5.3.8.zip 11247905 BLAKE2B f72289f55bddf9b3ad2e16a4d1fc6e4f7681477e742eda3694c3c16975820c93affc01c70b194c5992226d79bee714f706c04402c62bd0ed3d1701a16fb22192 SHA512 f578abbd43c3ccf721e079ce2bafac22be0c5d619388be192c59a2053ae1cf1e7f0a025e0323f0f8f004f879990a88c0ca0cd4d135606de51c576619fe0172b8
+DIST clickhouse-19.9.5.36.zip 11708002 BLAKE2B 075f9b1556c5ee207a608047fa559cec7a0b1f044236e412189ae6dabe25aa04abf881726e4ffa17d4aad6937250c704f050935e61470994b57eaa1ac9ea07e4 SHA512 b0aa04a1c0f7c15316c83a2711f9b64f8235e664956f933530a9f2dc26fcb8b817adb8ca43c96db1cad498e06f4291ce13c0bb259726039c5caa52ae523fa4ab
diff --git a/dev-db/clickhouse/clickhouse-18.10.3-r1.ebuild b/dev-db/clickhouse/clickhouse-18.10.3-r1.ebuild
new file mode 100644
index 000000000000..9ac11b623afc
--- /dev/null
+++ b/dev-db/clickhouse/clickhouse-18.10.3-r1.ebuild
@@ -0,0 +1,200 @@
+# Copyright 1999-2019 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+CMAKE_MAKEFILE_GENERATOR="ninja"
+
+inherit cmake-utils systemd toolchain-funcs user
+
+DESCRIPTION="An OSS column-oriented database management system for real-time data analysis"
+HOMEPAGE="https://clickhouse.yandex"
+LICENSE="Apache-2.0"
+
+MY_PN="ClickHouse"
+TYPE="stable"
+
+CCTZ_COMMIT="4f9776a"
+SRC_URI="https://github.com/yandex/${MY_PN}/archive/v${PV}-${TYPE}.tar.gz -> ${P}.tar.gz
+	https://github.com/google/cctz/archive/${CCTZ_COMMIT}.tar.gz -> cctz-${CCTZ_COMMIT}.tar.gz
+"
+
+SLOT="0/${TYPE}"
+IUSE="+client cpu_flags_x86_sse4_2 +server debug doc kafka mongodb mysql static test tools zookeeper"
+RESTRICT="!test? ( test )"
+KEYWORDS="~amd64"
+
+REQUIRED_USE="
+	server? ( cpu_flags_x86_sse4_2 )
+	static? ( client server tools )
+"
+
+RDEPEND="
+	dev-libs/re2:0=
+	!static? (
+		>=app-arch/lz4-1.8.0:=
+		>=app-arch/zstd-1.3.4:=
+		client? (
+			sys-libs/ncurses:0=
+			sys-libs/readline:0=
+		)
+
+		dev-libs/double-conversion
+		dev-libs/capnproto
+		dev-libs/libltdl:0
+		sys-libs/libunwind:7
+		sys-libs/zlib
+		|| (
+			dev-db/unixODBC
+			dev-libs/poco[odbc]
+		)
+		dev-libs/icu:=
+		dev-libs/glib
+		>=dev-libs/boost-1.65.0:=
+		dev-libs/openssl:0=
+		dev-libs/zookeeper-c
+		kafka? ( dev-libs/librdkafka:= )
+		mysql? ( dev-db/mysql-connector-c:= )
+	)
+
+	>=dev-libs/poco-1.9.0
+	dev-libs/libpcre
+"
+
+DEPEND="${RDEPEND}
+	doc? ( >=dev-python/mkdocs-1.0.1 )
+	static? (
+		>=app-arch/lz4-1.8.0[static-libs]
+		>=app-arch/zstd-1.3.4[static-libs]
+		client? (
+			sys-libs/ncurses:0=[static-libs]
+			sys-libs/readline:0=[static-libs]
+		)
+		dev-libs/capnproto[static-libs]
+		dev-libs/libltdl[static-libs]
+		sys-libs/libunwind:7[static-libs]
+		sys-libs/zlib[static-libs]
+		|| (
+			dev-db/unixODBC[static-libs]
+			dev-libs/poco[odbc]
+		)
+		dev-libs/icu[static-libs]
+		dev-libs/glib[static-libs]
+		>=dev-libs/boost-1.65.0[static-libs]
+		dev-libs/openssl[static-libs]
+		dev-libs/zookeeper-c[static-libs]
+		dev-db/mysql-connector-c[static-libs]
+		kafka? ( dev-libs/librdkafka[static-libs] )
+	)
+
+	sys-libs/libtermcap-compat
+	dev-util/patchelf
+	>=sys-devel/lld-6.0.0
+	|| (
+		>=sys-devel/gcc-7.0
+		>=sys-devel/clang-6.0
+	)
+"
+
+S="${WORKDIR}/${MY_PN}-${PV}-${TYPE}"
+
+_clang_fullversion() {
+	local ver="$1"; shift
+	set -- $($(tc-getCPP "$@") -E -P - <<<"__clang_major__ __clang_minor__ __clang_patchlevel__")
+	eval echo "$ver"
+}
+
+clang-fullversion() {
+	_clang_fullversion '$1.$2.$3' "$@"
+}
+
+clang-version() {
+	_clang_fullversion '$1.$2' "$@"
+}
+
+clang-major-version() {
+	_clang_fullversion '$1' "$@"
+}
+
+clang-minor-version() {
+	_clang_fullversion '$2' "$@"
+}
+
+clang-micro-version() {
+	_clang_fullversion '$3' "$@"
+}
+
+pkg_pretend() {
+	if [[ $(tc-getCC) == clang ]]; then
+		if [[ $(clang-major-version) -lt 6 ]]; then
+			eerror "Compilation with clang older than 6.0 is not supported"
+			die "Too old clang found"
+		fi
+		:
+	elif [[ $(gcc-major-version) -lt 7 ]] && [[$(gcc-minor-version) -lt 2 ]]; then
+		eerror "Compilation with gcc older than 7.2 is not supported"
+		die "Too old gcc found"
+	fi
+}
+
+src_unpack() {
+	default_src_unpack
+	[[ ${PV} == 9999 ]] && return 0
+	cd "${S}/contrib" || die "failed to cd to contrib"
+	mkdir -p cctz zookeeper zstd || die "failed to create directories"
+	tar --strip-components=1 -C cctz -xf "${DISTDIR}/cctz-${CCTZ_COMMIT}.tar.gz" || die "failed to unpack cctz"
+}
+
+src_configure() {
+	local mycmakeargs=(
+		-DENABLE_POCO_MONGODB="$(usex mongodb)"
+		-DENABLE_RDKAFKA="$(usex kafka)"
+		-DENABLE_TESTS="$(usex test)"
+		-DUSE_STATIC_LIBRARIES="$(usex static)"
+		-DMAKE_STATIC_LIBRARIES="$(usex static)"
+		-DUSE_MYSQL="$(usex mysql)"
+		-DENABLE_CLICKHOUSE_SERVER="$(usex server)"
+		-DENABLE_CLICKHOUSE_CLIENT="$(usex client)"
+		-DENABLE_CLICKHOUSE_LOCAL="$(usex tools)"
+		-DENABLE_CLICKHOUSE_BENCHMARK="$(usex tools)"
+		-DENABLE_CLICKHOUSE_PERFORMANCE="$(usex tools)"
+		-DENABLE_CLICKHOUSE_EXTRACT_FROM_CONFIG="$(usex tools)"
+		-DENABLE_CLICKHOUSE_COMPRESSOR="$(usex tools)"
+		-DENABLE_CLICKHOUSE_COPIER="$(usex tools)"
+		-DENABLE_CLICKHOUSE_COPIER="$(usex tools)"
+		-DENABLE_CLICKHOUSE_ALL=OFF
+		-DUSE_INTERNAL_SSL_LIBRARY=False
+		-DUSE_INTERNAL_CITYHASH_LIBRARY=ON # Clickhouse explicitly requires bundled patched cityhash
+		-DUNBUNDLED=ON
+	)
+
+	cmake-utils_src_configure
+}
+
+src_install() {
+	cmake-utils_src_install
+
+	if ! use test; then
+		rm -rf "${D}/usr/share/clickhouse-test" || die "failed to remove tests"
+	fi
+
+	if use doc; then
+		pushd "${S}/docs/tools" || die "Failed to enter docs build directory"
+		./build.py || die "Failed to build docs"
+		popd || die "Failed to exit docs build directory"
+
+		dodoc -r "${S}/docs/build"
+	fi
+
+	if use server; then
+		newinitd "${FILESDIR}"/clickhouse-server.initd clickhouse-server
+		systemd_dounit "${FILESDIR}"/clickhouse-server.service
+	fi
+}
+
+pkg_preinst() {
+	if use server; then
+		enewgroup clickhouse
+		enewuser clickhouse -1 -1 /var/lib/clickhouse clickhouse
+	fi
+}
diff --git a/dev-db/clickhouse/clickhouse-18.12.17-r1.ebuild b/dev-db/clickhouse/clickhouse-18.12.17-r1.ebuild
new file mode 100644
index 000000000000..8608b4a58fcc
--- /dev/null
+++ b/dev-db/clickhouse/clickhouse-18.12.17-r1.ebuild
@@ -0,0 +1,200 @@
+# Copyright 1999-2019 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+CMAKE_MAKEFILE_GENERATOR="ninja"
+
+inherit cmake-utils systemd toolchain-funcs user
+
+DESCRIPTION="An OSS column-oriented database management system for real-time data analysis"
+HOMEPAGE="https://clickhouse.yandex"
+LICENSE="Apache-2.0"
+
+MY_PN="ClickHouse"
+TYPE="stable"
+
+CCTZ_COMMIT="4f9776a"
+SRC_URI="https://github.com/yandex/${MY_PN}/archive/v${PV}-${TYPE}.tar.gz -> ${P}.tar.gz
+	https://github.com/google/cctz/archive/${CCTZ_COMMIT}.tar.gz -> cctz-${CCTZ_COMMIT}.tar.gz
+"
+
+SLOT="0/${TYPE}"
+IUSE="+client cpu_flags_x86_sse4_2 +server debug doc kafka mongodb mysql static test tools"
+RESTRICT="!test? ( test )"
+KEYWORDS="~amd64"
+
+REQUIRED_USE="
+	server? ( cpu_flags_x86_sse4_2 )
+	static? ( client server tools )
+"
+
+RDEPEND="
+	dev-libs/re2:0=
+	!static? (
+		>=app-arch/lz4-1.8.0:=
+		>=app-arch/zstd-1.3.4:=
+		client? (
+			sys-libs/ncurses:0=
+			sys-libs/readline:0=
+		)
+
+		dev-libs/double-conversion
+		dev-libs/capnproto
+		dev-libs/libltdl:0
+		sys-libs/libunwind:7
+		sys-libs/zlib
+		|| (
+			dev-db/unixODBC
+			dev-libs/poco[odbc]
+		)
+		dev-libs/icu:=
+		dev-libs/glib
+		>=dev-libs/boost-1.65.0:=
+		dev-libs/openssl:0=
+		kafka? ( dev-libs/librdkafka:= )
+		mysql? ( dev-db/mysql-connector-c:= )
+	)
+
+	>=dev-libs/poco-1.9.0
+	dev-libs/libpcre
+"
+
+DEPEND="${RDEPEND}
+	doc? ( >=dev-python/mkdocs-1.0.1 )
+	static? (
+		>=app-arch/lz4-1.8.0[static-libs]
+		>=app-arch/zstd-1.3.4[static-libs]
+		client? (
+			sys-libs/ncurses:0=[static-libs]
+			sys-libs/readline:0=[static-libs]
+		)
+		dev-libs/capnproto[static-libs]
+		dev-libs/libltdl[static-libs]
+		sys-libs/libunwind:7[static-libs]
+		sys-libs/zlib[static-libs]
+		|| (
+			dev-db/unixODBC[static-libs]
+			dev-libs/poco[odbc]
+		)
+		dev-libs/icu[static-libs]
+		dev-libs/glib[static-libs]
+		>=dev-libs/boost-1.65.0[static-libs]
+		dev-libs/openssl[static-libs]
+		dev-db/mysql-connector-c[static-libs]
+		kafka? ( dev-libs/librdkafka[static-libs] )
+	)
+
+	sys-libs/libtermcap-compat
+	dev-util/patchelf
+	>=sys-devel/lld-6.0.0
+	|| (
+		>=sys-devel/gcc-7.0
+		>=sys-devel/clang-6.0
+	)
+"
+
+S="${WORKDIR}/${MY_PN}-${PV}-${TYPE}"
+
+_clang_fullversion() {
+	local ver="$1"; shift
+	set -- $($(tc-getCPP "$@") -E -P - <<<"__clang_major__ __clang_minor__ __clang_patchlevel__")
+	eval echo "$ver"
+}
+
+clang-fullversion() {
+	_clang_fullversion '$1.$2.$3' "$@"
+}
+
+clang-version() {
+	_clang_fullversion '$1.$2' "$@"
+}
+
+clang-major-version() {
+	_clang_fullversion '$1' "$@"
+}
+
+clang-minor-version() {
+	_clang_fullversion '$2' "$@"
+}
+
+clang-micro-version() {
+	_clang_fullversion '$3' "$@"
+}
+
+pkg_pretend() {
+	if [[ $(tc-getCC) == clang ]]; then
+		if [[ $(clang-major-version) -lt 6 ]]; then
+			eerror "Compilation with clang older than 6.0 is not supported"
+			die "Too old clang found"
+		fi
+		:
+	elif [[ $(gcc-major-version) -lt 7 ]] && [[$(gcc-minor-version) -lt 2 ]]; then
+		eerror "Compilation with gcc older than 7.2 is not supported"
+		die "Too old gcc found"
+	fi
+}
+
+src_unpack() {
+	default_src_unpack
+	[[ ${PV} == 9999 ]] && return 0
+	cd "${S}/contrib" || die "failed to cd to contrib"
+	mkdir -p cctz zstd || die "failed to create directories"
+	tar --strip-components=1 -C cctz -xf "${DISTDIR}/cctz-${CCTZ_COMMIT}.tar.gz" || die "failed to unpack cctz"
+}
+
+src_configure() {
+	local mycmakeargs=(
+		-DENABLE_POCO_MONGODB="$(usex mongodb)"
+		-DENABLE_RDKAFKA="$(usex kafka)"
+		-DENABLE_TESTS="$(usex test)"
+		-DUSE_STATIC_LIBRARIES="$(usex static)"
+		-DMAKE_STATIC_LIBRARIES="$(usex static)"
+		-DUSE_MYSQL="$(usex mysql)"
+		-DENABLE_CLICKHOUSE_SERVER="$(usex server)"
+		-DENABLE_CLICKHOUSE_CLIENT="$(usex client)"
+		-DENABLE_CLICKHOUSE_LOCAL="$(usex tools)"
+		-DENABLE_CLICKHOUSE_BENCHMARK="$(usex tools)"
+		-DENABLE_CLICKHOUSE_PERFORMANCE="$(usex tools)"
+		-DENABLE_CLICKHOUSE_EXTRACT_FROM_CONFIG="$(usex tools)"
+		-DENABLE_CLICKHOUSE_COMPRESSOR="$(usex tools)"
+		-DENABLE_CLICKHOUSE_COPIER="$(usex tools)"
+		# As of now, clickhouse fails to build if odbc is disabled
+		-DENABLE_ODBC=True
+		-DENABLE_CLICKHOUSE_ODBC_BRIDGE=True
+		-DENABLE_CLICKHOUSE_ALL=OFF
+		-DUSE_INTERNAL_SSL_LIBRARY=False
+		-DUSE_INTERNAL_CITYHASH_LIBRARY=ON # Clickhouse explicitly requires bundled patched cityhash
+		-DUNBUNDLED=ON
+	)
+
+	cmake-utils_src_configure
+}
+
+src_install() {
+	cmake-utils_src_install
+
+	if ! use test; then
+		rm -rf "${D}/usr/share/clickhouse-test" || die "failed to remove tests"
+	fi
+
+	if use doc; then
+		pushd "${S}/docs/tools" || die "Failed to enter docs build directory"
+		./build.py || die "Failed to build docs"
+		popd || die "Failed to exit docs build directory"
+
+		dodoc -r "${S}/docs/build"
+	fi
+
+	if use server; then
+		newinitd "${FILESDIR}"/clickhouse-server.initd clickhouse-server
+		systemd_dounit "${FILESDIR}"/clickhouse-server.service
+	fi
+}
+
+pkg_preinst() {
+	if use server; then
+		enewgroup clickhouse
+		enewuser clickhouse -1 -1 /var/lib/clickhouse clickhouse
+	fi
+}
diff --git a/dev-db/clickhouse/clickhouse-18.6.0-r1.ebuild b/dev-db/clickhouse/clickhouse-18.6.0-r1.ebuild
new file mode 100644
index 000000000000..c476203de699
--- /dev/null
+++ b/dev-db/clickhouse/clickhouse-18.6.0-r1.ebuild
@@ -0,0 +1,200 @@
+# Copyright 1999-2019 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+CMAKE_MAKEFILE_GENERATOR="ninja"
+
+inherit cmake-utils systemd toolchain-funcs user
+
+DESCRIPTION="An OSS column-oriented database management system for real-time data analysis"
+HOMEPAGE="https://clickhouse.yandex"
+LICENSE="Apache-2.0"
+
+MY_PN="ClickHouse"
+TYPE="stable"
+
+CCTZ_COMMIT="4f9776a"
+ZSTD_COMMIT="2555975"
+SRC_URI="https://github.com/yandex/${MY_PN}/archive/v${PV}-${TYPE}.tar.gz -> ${P}.tar.gz
+	https://github.com/google/cctz/archive/${CCTZ_COMMIT}.tar.gz -> cctz-${CCTZ_COMMIT}.tar.gz
+"
+
+SLOT="0/${TYPE}"
+IUSE="+client cpu_flags_x86_sse4_2 +server debug doc kafka mongodb mysql static test tools zookeeper"
+RESTRICT="!test? ( test )"
+KEYWORDS="~amd64"
+
+REQUIRED_USE="
+	server? ( cpu_flags_x86_sse4_2 )
+	static? ( client server tools )
+"
+
+RDEPEND="
+	dev-libs/re2:0=
+	!static? (
+		>=app-arch/lz4-1.8.0:=
+		>=app-arch/zstd-1.3.4:=
+		client? (
+			sys-libs/ncurses:0=
+			sys-libs/readline:0=
+		)
+
+		dev-libs/double-conversion
+		dev-libs/capnproto
+		dev-libs/libltdl:0
+		sys-libs/libunwind:7
+		sys-libs/zlib
+		|| (
+			dev-db/unixODBC
+			dev-libs/poco[odbc]
+		)
+		dev-libs/icu:=
+		dev-libs/glib
+		>=dev-libs/boost-1.65.0:=
+		dev-libs/openssl:0=
+		dev-libs/zookeeper-c
+		kafka? ( dev-libs/librdkafka:= )
+		mysql? ( dev-db/mysql-connector-c:= )
+	)
+
+	>=dev-libs/poco-1.9.0
+	dev-libs/libpcre
+"
+
+DEPEND="${RDEPEND}
+	doc? ( >=dev-python/mkdocs-0.17.3 )
+	static? (
+		>=app-arch/lz4-1.8.0[static-libs]
+		>=app-arch/zstd-1.3.4[static-libs]
+		client? (
+			sys-libs/ncurses:0=[static-libs]
+			sys-libs/readline:0=[static-libs]
+		)
+		dev-libs/capnproto[static-libs]
+		dev-libs/libltdl[static-libs]
+		sys-libs/libunwind:7[static-libs]
+		sys-libs/zlib[static-libs]
+		|| (
+			dev-db/unixODBC[static-libs]
+			dev-libs/poco[odbc]
+		)
+		dev-libs/icu[static-libs]
+		dev-libs/glib[static-libs]
+		>=dev-libs/boost-1.65.0[static-libs]
+		dev-libs/openssl[static-libs]
+		dev-libs/zookeeper-c[static-libs]
+		dev-db/mysql-connector-c[static-libs]
+		kafka? ( dev-libs/librdkafka[static-libs] )
+	)
+
+	sys-libs/libtermcap-compat
+	dev-util/patchelf
+	>=sys-devel/lld-6.0.0
+	|| (
+		>=sys-devel/gcc-7.0
+		>=sys-devel/clang-6.0
+	)
+"
+
+S="${WORKDIR}/${MY_PN}-${PV}-${TYPE}"
+
+_clang_fullversion() {
+	local ver="$1"; shift
+	set -- $($(tc-getCPP "$@") -E -P - <<<"__clang_major__ __clang_minor__ __clang_patchlevel__")
+	eval echo "$ver"
+}
+
+clang-fullversion() {
+	_clang_fullversion '$1.$2.$3' "$@"
+}
+
+clang-version() {
+	_clang_fullversion '$1.$2' "$@"
+}
+
+clang-major-version() {
+	_clang_fullversion '$1' "$@"
+}
+
+clang-minor-version() {
+	_clang_fullversion '$2' "$@"
+}
+
+clang-micro-version() {
+	_clang_fullversion '$3' "$@"
+}
+
+pkg_pretend() {
+	if [[ $(tc-getCC) == clang ]]; then
+		if [[ $(clang-major-version) -lt 6 ]]; then
+			eerror "Compilation with clang older than 6.0 is not supported"
+			die "Too old clang found"
+		fi
+		:
+	elif [[ $(gcc-major-version) -lt 7 ]] && [[$(gcc-minor-version) -lt 2 ]]; then
+		eerror "Compilation with gcc older than 7.2 is not supported"
+		die "Too old gcc found"
+	fi
+}
+
+src_unpack() {
+	default_src_unpack
+	[[ ${PV} == 9999 ]] && return 0
+	cd "${S}/contrib" || die "failed to cd to contrib"
+	mkdir -p cctz zookeeper zstd || die "failed to create directories"
+	tar --strip-components=1 -C cctz -xf "${DISTDIR}/cctz-${CCTZ_COMMIT}.tar.gz" || die "failed to unpack cctz"
+}
+
+src_configure() {
+	local mycmakeargs=(
+		-DENABLE_POCO_MONGODB="$(usex mongodb)"
+		-DENABLE_RDKAFKA="$(usex kafka)"
+		-DENABLE_TESTS="$(usex test)"
+		-DUSE_STATIC_LIBRARIES="$(usex static)"
+		-DMAKE_STATIC_LIBRARIES="$(usex static)"
+		-DUSE_MYSQL="$(usex mysql)"
+		-DENABLE_CLICKHOUSE_SERVER="$(usex server)"
+		-DENABLE_CLICKHOUSE_CLIENT="$(usex client)"
+		-DENABLE_CLICKHOUSE_LOCAL="$(usex tools)"
+		-DENABLE_CLICKHOUSE_BENCHMARK="$(usex tools)"
+		-DENABLE_CLICKHOUSE_PERFORMANCE="$(usex tools)"
+		-DENABLE_CLICKHOUSE_EXTRACT_FROM_CONFIG="$(usex tools)"
+		-DENABLE_CLICKHOUSE_COMPRESSOR="$(usex tools)"
+		-DENABLE_CLICKHOUSE_COPIER="$(usex tools)"
+		-DENABLE_CLICKHOUSE_COPIER="$(usex tools)"
+		-DENABLE_CLICKHOUSE_ALL=OFF
+		-DUSE_INTERNAL_CITYHASH_LIBRARY=ON # Clickhouse explicitly requires bundled patched cityhash
+		-DUNBUNDLED=ON
+	)
+
+	cmake-utils_src_configure
+}
+
+src_install() {
+	cmake-utils_src_install
+
+	if ! use test; then
+		rm -rf "${D}/usr/share/clickhouse-test" || die "failed to remove tests"
+	fi
+
+	if use doc; then
+		pushd "${S}/docs/tools" || die "Failed to enter docs build directory"
+		./build.py || die "Failed to build docs"
+		popd || die "Failed to exit docs build directory"
+
+		dodoc -r "${S}/docs/build"
+	fi
+
+	if use server; then
+		newinitd "${FILESDIR}"/clickhouse-server.initd clickhouse-server
+		systemd_dounit "${FILESDIR}"/clickhouse-server.service
+	fi
+}
+
+pkg_preinst() {
+	if use server; then
+		enewgroup clickhouse
+		enewuser clickhouse -1 -1 /var/lib/clickhouse clickhouse
+	fi
+}
diff --git a/dev-db/clickhouse/clickhouse-19.13.1.11-r2.ebuild b/dev-db/clickhouse/clickhouse-19.13.1.11-r2.ebuild
new file mode 100644
index 000000000000..e4848a05976a
--- /dev/null
+++ b/dev-db/clickhouse/clickhouse-19.13.1.11-r2.ebuild
@@ -0,0 +1,204 @@
+# Copyright 1999-2019 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+CMAKE_MAKEFILE_GENERATOR="ninja"
+
+inherit cmake-utils systemd toolchain-funcs user
+
+DESCRIPTION="An OSS column-oriented database management system for real-time data analysis"
+HOMEPAGE="https://clickhouse.yandex"
+LICENSE="Apache-2.0"
+
+MY_PN="ClickHouse"
+TYPE="stable"
+
+CCTZ_COMMIT="4f9776a"
+SRC_URI="https://github.com/yandex/${MY_PN}/archive/v${PV}-${TYPE}.zip -> ${P}.zip
+	https://github.com/google/cctz/archive/${CCTZ_COMMIT}.tar.gz -> cctz-${CCTZ_COMMIT}.tar.gz
+"
+
+SLOT="0/${TYPE}"
+IUSE="+client cpu_flags_x86_sse4_2 +server debug doc kafka mongodb mysql static test tools"
+RESTRICT="!test? ( test )"
+KEYWORDS="~amd64"
+
+REQUIRED_USE="
+	server? ( cpu_flags_x86_sse4_2 )
+	static? ( client server tools )
+"
+
+RDEPEND="
+	dev-libs/re2:0=
+	!static? (
+		>=app-arch/lz4-1.8.0:=
+		>=app-arch/zstd-1.3.4:=
+		client? (
+			sys-libs/ncurses:0=
+			sys-libs/readline:0=
+		)
+
+		dev-libs/double-conversion
+		dev-libs/capnproto
+		dev-libs/libltdl:0
+		sys-libs/libunwind:7
+		sys-libs/zlib
+		dev-libs/poco[odbc]
+		dev-libs/icu:=
+		dev-libs/glib
+		>=dev-libs/boost-1.65.0:=
+		dev-libs/openssl:0=
+		kafka? ( dev-libs/librdkafka:= )
+		mysql? ( dev-db/mysql-connector-c:= )
+	)
+
+	>=dev-libs/poco-1.9.0
+	dev-libs/libpcre
+	dev-libs/jemalloc
+	dev-libs/protobuf
+"
+
+DEPEND="${RDEPEND}
+	doc? ( >=dev-python/mkdocs-1.0.1 )
+	static? (
+		>=app-arch/lz4-1.8.0[static-libs]
+		>=app-arch/zstd-1.3.4[static-libs]
+		client? (
+			sys-libs/ncurses:0=[static-libs]
+			sys-libs/readline:0=[static-libs]
+		)
+		dev-libs/capnproto[static-libs]
+		dev-libs/libltdl[static-libs]
+		sys-libs/libunwind:7[static-libs]
+		sys-libs/zlib[static-libs]
+		|| (
+			dev-db/unixODBC[static-libs]
+			dev-libs/poco[odbc]
+		)
+		dev-libs/icu[static-libs]
+		dev-libs/glib[static-libs]
+		>=dev-libs/boost-1.65.0[static-libs]
+		dev-libs/openssl[static-libs]
+		dev-db/mysql-connector-c[static-libs]
+		kafka? ( dev-libs/librdkafka[static-libs] )
+	)
+
+	sys-libs/libtermcap-compat
+	dev-util/patchelf
+	>=sys-devel/lld-6.0.0
+	>=sys-devel/gcc-7.0
+	>=sys-devel/clang-6.0
+"
+
+S="${WORKDIR}/${MY_PN}-${PV}-${TYPE}"
+
+_clang_fullversion() {
+	local ver="$1"; shift
+	set -- $($(tc-getCPP "$@") -E -P - <<<"__clang_major__ __clang_minor__ __clang_patchlevel__")
+	eval echo "$ver"
+}
+
+clang-fullversion() {
+	_clang_fullversion '$1.$2.$3' "$@"
+}
+
+clang-version() {
+	_clang_fullversion '$1.$2' "$@"
+}
+
+clang-major-version() {
+	_clang_fullversion '$1' "$@"
+}
+
+clang-minor-version() {
+	_clang_fullversion '$2' "$@"
+}
+
+clang-micro-version() {
+	_clang_fullversion '$3' "$@"
+}
+
+pkg_pretend() {
+	if [[ $(tc-getCC) == clang ]]; then
+		if [[ $(clang-major-version) -lt 6 ]]; then
+			eerror "Compilation with clang older than 6.0 is not supported"
+			die "Too old clang found"
+		fi
+		:
+	elif [[ $(gcc-major-version) -lt 7 ]] && [[$(gcc-minor-version) -lt 2 ]]; then
+		eerror "Compilation with gcc older than 7.2 is not supported"
+		die "Too old gcc found"
+	fi
+}
+
+src_unpack() {
+	default_src_unpack
+	[[ ${PV} == 9999 ]] && return 0
+	cd "${S}/contrib" || die "failed to cd to contrib"
+	mkdir -p cctz zstd || die "failed to create directories"
+	tar --strip-components=1 -C cctz -xf "${DISTDIR}/cctz-${CCTZ_COMMIT}.tar.gz" || die "failed to unpack cctz"
+}
+
+src_prepare() {
+	eapply_user
+	cmake-utils_src_prepare
+}
+src_configure() {
+	local mycmakeargs=(
+		-DENABLE_POCO_MONGODB="$(usex mongodb)"
+		-DENABLE_RDKAFKA="$(usex kafka)"
+		-DENABLE_TESTS="$(usex test)"
+		-DUSE_STATIC_LIBRARIES="$(usex static)"
+		-DMAKE_STATIC_LIBRARIES="$(usex static)"
+		-DUSE_MYSQL="$(usex mysql)"
+		-DENABLE_CLICKHOUSE_SERVER="$(usex server)"
+		-DENABLE_CLICKHOUSE_CLIENT="$(usex client)"
+		-DENABLE_CLICKHOUSE_LOCAL="$(usex tools)"
+		-DENABLE_CLICKHOUSE_BENCHMARK="$(usex tools)"
+		-DENABLE_CLICKHOUSE_PERFORMANCE="$(usex tools)"
+		-DENABLE_CLICKHOUSE_EXTRACT_FROM_CONFIG="$(usex tools)"
+		-DENABLE_CLICKHOUSE_COMPRESSOR="$(usex tools)"
+		-DENABLE_CLICKHOUSE_COPIER="$(usex tools)"
+		# As of now, clickhouse fails to build if odbc is disabled
+		-DENABLE_ODBC=True
+		-DENABLE_CLICKHOUSE_ODBC_BRIDGE=True
+		-DENABLE_CLICKHOUSE_ALL=OFF
+		-DUSE_INTERNAL_SSL_LIBRARY=False
+		-DUSE_INTERNAL_CITYHASH_LIBRARY=ON # Clickhouse explicitly requires bundled patched cityhash
+		-DUNBUNDLED=ON
+	)
+
+	cmake-utils_src_configure
+}
+
+src_install() {
+	cmake-utils_src_install
+
+	if ! use test; then
+		rm -rf "${D}/usr/share/clickhouse-test" || die "failed to remove tests"
+	fi
+
+	if use doc; then
+		pushd "${S}/docs/tools" || die "Failed to enter docs build directory"
+		./build.py || die "Failed to build docs"
+		popd || die "Failed to exit docs build directory"
+
+		dodoc -r "${S}/docs/build"
+	fi
+
+	if use server; then
+		newinitd "${FILESDIR}"/clickhouse-server.initd clickhouse-server
+		systemd_dounit "${FILESDIR}"/clickhouse-server.service
+	fi
+
+	keepdir /var/log/clickhouse-server
+	chown clickhouse:clickhouse "${D}"/var/log/clickhouse-server
+}
+
+pkg_preinst() {
+	if use server; then
+		enewgroup clickhouse
+		enewuser clickhouse -1 -1 /var/lib/clickhouse clickhouse
+	fi
+}
diff --git a/dev-db/clickhouse/clickhouse-19.13.1.11-r3.ebuild b/dev-db/clickhouse/clickhouse-19.13.1.11-r3.ebuild
new file mode 100644
index 000000000000..08e3db756d30
--- /dev/null
+++ b/dev-db/clickhouse/clickhouse-19.13.1.11-r3.ebuild
@@ -0,0 +1,205 @@
+# Copyright 1999-2019 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+CMAKE_MAKEFILE_GENERATOR="ninja"
+
+inherit cmake-utils systemd toolchain-funcs user
+
+DESCRIPTION="An OSS column-oriented database management system for real-time data analysis"
+HOMEPAGE="https://clickhouse.yandex"
+LICENSE="Apache-2.0"
+
+MY_PN="ClickHouse"
+TYPE="stable"
+
+CCTZ_COMMIT="4f9776a"
+SRC_URI="https://github.com/yandex/${MY_PN}/archive/v${PV}-${TYPE}.zip -> ${P}.zip
+	https://github.com/google/cctz/archive/${CCTZ_COMMIT}.tar.gz -> cctz-${CCTZ_COMMIT}.tar.gz
+"
+
+SLOT="0/${TYPE}"
+IUSE="+client cpu_flags_x86_sse4_2 +server debug doc kafka mongodb mysql static test tools"
+RESTRICT="!test? ( test )"
+KEYWORDS="~amd64"
+
+REQUIRED_USE="
+	server? ( cpu_flags_x86_sse4_2 )
+	static? ( client server tools )
+"
+
+RDEPEND="
+	dev-libs/re2:0=
+	!static? (
+		>=app-arch/lz4-1.8.0:=
+		>=app-arch/zstd-1.3.4:=
+		client? (
+			sys-libs/ncurses:0=
+			sys-libs/readline:0=
+		)
+
+		dev-libs/double-conversion
+		dev-libs/capnproto
+		dev-libs/libltdl:0
+		sys-libs/libunwind:7
+		sys-libs/zlib
+		dev-libs/poco[odbc]
+		dev-libs/icu:=
+		dev-libs/glib
+		>=dev-libs/boost-1.65.0:=
+		dev-libs/openssl:0=
+		kafka? ( dev-libs/librdkafka:= )
+		mysql? ( dev-db/mysql-connector-c:= )
+	)
+
+	>=dev-libs/poco-1.9.0
+	dev-libs/libpcre
+	dev-libs/jemalloc
+	dev-libs/protobuf
+"
+
+DEPEND="${RDEPEND}
+	doc? ( >=dev-python/mkdocs-1.0.1 )
+	static? (
+		>=app-arch/lz4-1.8.0[static-libs]
+		>=app-arch/zstd-1.3.4[static-libs]
+		client? (
+			sys-libs/ncurses:0=[static-libs]
+			sys-libs/readline:0=[static-libs]
+		)
+		dev-libs/capnproto[static-libs]
+		dev-libs/libltdl[static-libs]
+		sys-libs/libunwind:7[static-libs]
+		sys-libs/zlib[static-libs]
+		|| (
+			dev-db/unixODBC[static-libs]
+			dev-libs/poco[odbc]
+		)
+		dev-libs/icu[static-libs]
+		dev-libs/glib[static-libs]
+		>=dev-libs/boost-1.65.0[static-libs]
+		dev-libs/openssl[static-libs]
+		dev-db/mysql-connector-c[static-libs]
+		kafka? ( dev-libs/librdkafka[static-libs] )
+	)
+	=dev-cpp/gtest-1.8*
+	sys-libs/libtermcap-compat
+	dev-util/patchelf
+	>=sys-devel/lld-6.0.0
+	>=sys-devel/gcc-7.0
+	>=sys-devel/clang-6.0
+"
+
+S="${WORKDIR}/${MY_PN}-${PV}-${TYPE}"
+
+_clang_fullversion() {
+	local ver="$1"; shift
+	set -- $($(tc-getCPP "$@") -E -P - <<<"__clang_major__ __clang_minor__ __clang_patchlevel__")
+	eval echo "$ver"
+}
+
+clang-fullversion() {
+	_clang_fullversion '$1.$2.$3' "$@"
+}
+
+clang-version() {
+	_clang_fullversion '$1.$2' "$@"
+}
+
+clang-major-version() {
+	_clang_fullversion '$1' "$@"
+}
+
+clang-minor-version() {
+	_clang_fullversion '$2' "$@"
+}
+
+clang-micro-version() {
+	_clang_fullversion '$3' "$@"
+}
+
+pkg_pretend() {
+	if [[ $(tc-getCC) == clang ]]; then
+		if [[ $(clang-major-version) -lt 6 ]]; then
+			eerror "Compilation with clang older than 6.0 is not supported"
+			die "Too old clang found"
+		fi
+		:
+	elif [[ $(gcc-major-version) -lt 7 ]] && [[$(gcc-minor-version) -lt 2 ]]; then
+		eerror "Compilation with gcc older than 7.2 is not supported"
+		die "Too old gcc found"
+	fi
+}
+
+src_unpack() {
+	default_src_unpack
+	[[ ${PV} == 9999 ]] && return 0
+	cd "${S}/contrib" || die "failed to cd to contrib"
+	mkdir -p cctz zstd || die "failed to create directories"
+	tar --strip-components=1 -C cctz -xf "${DISTDIR}/cctz-${CCTZ_COMMIT}.tar.gz" || die "failed to unpack cctz"
+}
+
+src_prepare() {
+	eapply_user
+	cmake-utils_src_prepare
+}
+src_configure() {
+	local mycmakeargs=(
+		-DENABLE_POCO_MONGODB="$(usex mongodb)"
+		-DENABLE_RDKAFKA="$(usex kafka)"
+		-DENABLE_TESTS="$(usex test)"
+		-DUSE_STATIC_LIBRARIES="$(usex static)"
+		-DMAKE_STATIC_LIBRARIES="$(usex static)"
+		-DUSE_MYSQL="$(usex mysql)"
+		-DENABLE_CLICKHOUSE_SERVER="$(usex server)"
+		-DENABLE_CLICKHOUSE_CLIENT="$(usex client)"
+		-DENABLE_CLICKHOUSE_LOCAL="$(usex tools)"
+		-DENABLE_CLICKHOUSE_BENCHMARK="$(usex tools)"
+		-DENABLE_CLICKHOUSE_PERFORMANCE="$(usex tools)"
+		-DENABLE_CLICKHOUSE_EXTRACT_FROM_CONFIG="$(usex tools)"
+		-DENABLE_CLICKHOUSE_COMPRESSOR="$(usex tools)"
+		-DENABLE_CLICKHOUSE_COPIER="$(usex tools)"
+		# As of now, clickhouse fails to build if odbc is disabled
+		-DENABLE_ODBC=True
+		-DENABLE_CLICKHOUSE_ODBC_BRIDGE=True
+		-DENABLE_CLICKHOUSE_ALL=OFF
+		-DUSE_INTERNAL_SSL_LIBRARY=False
+		-DUSE_INTERNAL_CITYHASH_LIBRARY=ON # Clickhouse explicitly requires bundled patched cityhash
+		-DUNBUNDLED=ON
+	)
+
+	cmake-utils_src_configure
+}
+
+src_install() {
+	cmake-utils_src_install
+
+	if ! use test; then
+		rm -rf "${D}/usr/share/clickhouse-test" || die "failed to remove tests"
+	fi
+
+	if use doc; then
+		pushd "${S}/docs/tools" || die "Failed to enter docs build directory"
+		./build.py || die "Failed to build docs"
+		popd || die "Failed to exit docs build directory"
+
+		dodoc -r "${S}/docs/build"
+	fi
+
+	if use server; then
+		newinitd "${FILESDIR}"/clickhouse-server.initd-r1 clickhouse-server
+		newconfd "${FILESDIR}"/clickhouse-server.confd clickhouse-server
+		systemd_dounit "${FILESDIR}"/clickhouse-server.service
+	fi
+
+	keepdir /var/log/clickhouse-server
+	chown clickhouse:clickhouse "${D}"/var/log/clickhouse-server
+}
+
+pkg_preinst() {
+	if use server; then
+		enewgroup clickhouse
+		enewuser clickhouse -1 -1 /var/lib/clickhouse clickhouse
+	fi
+}
diff --git a/dev-db/clickhouse/clickhouse-19.15.2.2.ebuild b/dev-db/clickhouse/clickhouse-19.15.2.2.ebuild
new file mode 100644
index 000000000000..dec501ea572e
--- /dev/null
+++ b/dev-db/clickhouse/clickhouse-19.15.2.2.ebuild
@@ -0,0 +1,207 @@
+# Copyright 1999-2019 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+CMAKE_MAKEFILE_GENERATOR="ninja"
+
+inherit cmake-utils systemd toolchain-funcs user
+
+DESCRIPTION="An OSS column-oriented database management system for real-time data analysis"
+HOMEPAGE="https://clickhouse.yandex"
+LICENSE="Apache-2.0"
+
+MY_PN="ClickHouse"
+TYPE="stable"
+
+CCTZ_COMMIT="4f9776a"
+SRC_URI="https://github.com/yandex/${MY_PN}/archive/v${PV}-${TYPE}.zip -> ${P}.zip
+	https://github.com/google/cctz/archive/${CCTZ_COMMIT}.tar.gz -> cctz-${CCTZ_COMMIT}.tar.gz
+"
+
+SLOT="0/${TYPE}"
+IUSE="+client cpu_flags_x86_sse4_2 +server debug doc kafka mongodb mysql static test tools"
+RESTRICT="!test? ( test )"
+KEYWORDS="~amd64"
+
+REQUIRED_USE="
+	server? ( cpu_flags_x86_sse4_2 )
+	static? ( client server tools )
+"
+
+RDEPEND="
+	dev-libs/re2:0=
+	!static? (
+		>=app-arch/lz4-1.8.0:=
+		>=app-arch/zstd-1.3.4:=
+		client? (
+			sys-libs/ncurses:0=
+			sys-libs/readline:0=
+		)
+
+		dev-libs/double-conversion
+		dev-libs/capnproto
+		dev-libs/libltdl:0
+		sys-libs/libunwind:7
+		sys-libs/zlib
+		dev-libs/poco[odbc]
+		dev-libs/icu:=
+		dev-libs/glib
+		>=dev-libs/boost-1.65.0:=
+		dev-libs/openssl:0=
+		kafka? ( dev-libs/librdkafka:= )
+		mysql? ( dev-db/mysql-connector-c:= )
+	)
+
+	>=dev-libs/poco-1.9.0
+	dev-libs/libpcre
+	dev-libs/jemalloc
+	dev-libs/protobuf
+	dev-cpp/sparsehash
+"
+
+DEPEND="${RDEPEND}
+	doc? ( >=dev-python/mkdocs-1.0.1 )
+	static? (
+		>=app-arch/lz4-1.8.0[static-libs]
+		>=app-arch/zstd-1.3.4[static-libs]
+		client? (
+			sys-libs/ncurses:0=[static-libs]
+			sys-libs/readline:0=[static-libs]
+		)
+		dev-libs/capnproto[static-libs]
+		dev-libs/libltdl[static-libs]
+		sys-libs/libunwind:7[static-libs]
+		sys-libs/zlib[static-libs]
+		|| (
+			dev-db/unixODBC[static-libs]
+			dev-libs/poco[odbc]
+		)
+		dev-libs/icu[static-libs]
+		dev-libs/glib[static-libs]
+		>=dev-libs/boost-1.65.0[static-libs]
+		dev-libs/openssl[static-libs]
+		dev-db/mysql-connector-c[static-libs]
+		kafka? ( dev-libs/librdkafka[static-libs] )
+	)
+	=dev-cpp/gtest-1.8*
+	sys-libs/libtermcap-compat
+	dev-util/patchelf
+	>=sys-devel/lld-6.0.0
+	>=sys-devel/gcc-7.0
+	>=sys-devel/clang-6.0
+"
+
+S="${WORKDIR}/${MY_PN}-${PV}-${TYPE}"
+
+_clang_fullversion() {
+	local ver="$1"; shift
+	set -- $($(tc-getCPP "$@") -E -P - <<<"__clang_major__ __clang_minor__ __clang_patchlevel__")
+	eval echo "$ver"
+}
+
+clang-fullversion() {
+	_clang_fullversion '$1.$2.$3' "$@"
+}
+
+clang-version() {
+	_clang_fullversion '$1.$2' "$@"
+}
+
+clang-major-version() {
+	_clang_fullversion '$1' "$@"
+}
+
+clang-minor-version() {
+	_clang_fullversion '$2' "$@"
+}
+
+clang-micro-version() {
+	_clang_fullversion '$3' "$@"
+}
+
+pkg_pretend() {
+	if [[ $(tc-getCC) == clang ]]; then
+		if [[ $(clang-major-version) -lt 6 ]]; then
+			eerror "Compilation with clang older than 6.0 is not supported"
+			die "Too old clang found"
+		fi
+		:
+	elif [[ $(gcc-major-version) -lt 7 ]] && [[$(gcc-minor-version) -lt 2 ]]; then
+		eerror "Compilation with gcc older than 7.2 is not supported"
+		die "Too old gcc found"
+	fi
+}
+
+src_unpack() {
+	default_src_unpack
+	[[ ${PV} == 9999 ]] && return 0
+	cd "${S}/contrib" || die "failed to cd to contrib"
+	mkdir -p cctz zstd || die "failed to create directories"
+	tar --strip-components=1 -C cctz -xf "${DISTDIR}/cctz-${CCTZ_COMMIT}.tar.gz" || die "failed to unpack cctz"
+}
+
+src_prepare() {
+	sed -i -e 's~add_subdirectory(contrib/libunwind-cmake)~~' cmake/find/unwind.cmake || die "Failed to succeed"
+	eapply_user
+	cmake-utils_src_prepare
+}
+src_configure() {
+	local mycmakeargs=(
+		-DENABLE_POCO_MONGODB="$(usex mongodb)"
+		-DENABLE_RDKAFKA="$(usex kafka)"
+		-DENABLE_TESTS="$(usex test)"
+		-DUSE_STATIC_LIBRARIES="$(usex static)"
+		-DMAKE_STATIC_LIBRARIES="$(usex static)"
+		-DUSE_MYSQL="$(usex mysql)"
+		-DENABLE_CLICKHOUSE_SERVER="$(usex server)"
+		-DENABLE_CLICKHOUSE_CLIENT="$(usex client)"
+		-DENABLE_CLICKHOUSE_LOCAL="$(usex tools)"
+		-DENABLE_CLICKHOUSE_BENCHMARK="$(usex tools)"
+		-DENABLE_CLICKHOUSE_PERFORMANCE="$(usex tools)"
+		-DENABLE_CLICKHOUSE_EXTRACT_FROM_CONFIG="$(usex tools)"
+		-DENABLE_CLICKHOUSE_COMPRESSOR="$(usex tools)"
+		-DENABLE_CLICKHOUSE_COPIER="$(usex tools)"
+		# As of now, clickhouse fails to build if odbc is disabled
+		-DENABLE_ODBC=True
+		-DENABLE_CLICKHOUSE_ODBC_BRIDGE=True
+		-DENABLE_CLICKHOUSE_ALL=OFF
+		-DUSE_INTERNAL_SSL_LIBRARY=False
+		-DUSE_INTERNAL_CITYHASH_LIBRARY=ON # Clickhouse explicitly requires bundled patched cityhash
+		-DUNBUNDLED=ON
+	)
+
+	cmake-utils_src_configure
+}
+
+src_install() {
+	cmake-utils_src_install
+
+	if ! use test; then
+		rm -rf "${D}/usr/share/clickhouse-test" || die "failed to remove tests"
+	fi
+
+	if use doc; then
+		pushd "${S}/docs/tools" || die "Failed to enter docs build directory"
+		./build.py || die "Failed to build docs"
+		popd || die "Failed to exit docs build directory"
+
+		dodoc -r "${S}/docs/build"
+	fi
+
+	if use server; then
+		newinitd "${FILESDIR}"/clickhouse-server.initd-r1 clickhouse-server
+		newconfd "${FILESDIR}"/clickhouse-server.confd clickhouse-server
+		systemd_dounit "${FILESDIR}"/clickhouse-server.service
+	fi
+
+	keepdir /var/log/clickhouse-server
+	chown clickhouse:clickhouse "${D}"/var/log/clickhouse-server
+}
+
+pkg_preinst() {
+	if use server; then
+		enewgroup clickhouse
+		enewuser clickhouse -1 -1 /var/lib/clickhouse clickhouse
+	fi
+}
diff --git a/dev-db/clickhouse/clickhouse-19.5.3.8-r1.ebuild b/dev-db/clickhouse/clickhouse-19.5.3.8-r1.ebuild
new file mode 100644
index 000000000000..92f6800a614a
--- /dev/null
+++ b/dev-db/clickhouse/clickhouse-19.5.3.8-r1.ebuild
@@ -0,0 +1,203 @@
+# Copyright 1999-2019 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+CMAKE_MAKEFILE_GENERATOR="ninja"
+
+inherit cmake-utils systemd toolchain-funcs user
+
+DESCRIPTION="An OSS column-oriented database management system for real-time data analysis"
+HOMEPAGE="https://clickhouse.yandex"
+LICENSE="Apache-2.0"
+
+MY_PN="ClickHouse"
+TYPE="stable"
+
+CCTZ_COMMIT="4f9776a"
+SRC_URI="https://github.com/yandex/${MY_PN}/archive/v${PV}-${TYPE}.zip -> ${P}.zip
+	https://github.com/google/cctz/archive/${CCTZ_COMMIT}.tar.gz -> cctz-${CCTZ_COMMIT}.tar.gz
+"
+
+SLOT="0/${TYPE}"
+IUSE="+client cpu_flags_x86_sse4_2 +server debug doc kafka mongodb mysql static test tools"
+RESTRICT="!test? ( test )"
+KEYWORDS="~amd64"
+
+REQUIRED_USE="
+	server? ( cpu_flags_x86_sse4_2 )
+	static? ( client server tools )
+"
+
+RDEPEND="
+	dev-libs/re2:0=
+	!static? (
+		>=app-arch/lz4-1.8.0:=
+		>=app-arch/zstd-1.3.4:=
+		client? (
+			sys-libs/ncurses:0=
+			sys-libs/readline:0=
+		)
+
+		dev-libs/double-conversion
+		dev-libs/capnproto
+		dev-libs/libltdl:0
+		sys-libs/libunwind:7
+		sys-libs/zlib
+		dev-libs/poco[odbc]
+		dev-libs/icu:=
+		dev-libs/glib
+		>=dev-libs/boost-1.65.0:=
+		dev-libs/openssl:0=
+		kafka? ( dev-libs/librdkafka:= )
+		mysql? ( dev-db/mysql-connector-c:= )
+	)
+
+	>=dev-libs/poco-1.9.0
+	dev-libs/libpcre
+	dev-libs/jemalloc
+"
+
+DEPEND="${RDEPEND}
+	doc? ( >=dev-python/mkdocs-1.0.1 )
+	static? (
+		>=app-arch/lz4-1.8.0[static-libs]
+		>=app-arch/zstd-1.3.4[static-libs]
+		client? (
+			sys-libs/ncurses:0=[static-libs]
+			sys-libs/readline:0=[static-libs]
+		)
+		dev-libs/capnproto[static-libs]
+		dev-libs/libltdl[static-libs]
+		sys-libs/libunwind:7[static-libs]
+		sys-libs/zlib[static-libs]
+		|| (
+			dev-db/unixODBC[static-libs]
+			dev-libs/poco[odbc]
+		)
+		dev-libs/icu[static-libs]
+		dev-libs/glib[static-libs]
+		>=dev-libs/boost-1.65.0[static-libs]
+		dev-libs/openssl[static-libs]
+		dev-db/mysql-connector-c[static-libs]
+		kafka? ( dev-libs/librdkafka[static-libs] )
+	)
+
+	sys-libs/libtermcap-compat
+	dev-util/patchelf
+	>=sys-devel/lld-6.0.0
+	>=sys-devel/gcc-7.0
+	>=sys-devel/clang-6.0
+"
+
+S="${WORKDIR}/${MY_PN}-${PV}-${TYPE}"
+
+_clang_fullversion() {
+	local ver="$1"; shift
+	set -- $($(tc-getCPP "$@") -E -P - <<<"__clang_major__ __clang_minor__ __clang_patchlevel__")
+	eval echo "$ver"
+}
+
+clang-fullversion() {
+	_clang_fullversion '$1.$2.$3' "$@"
+}
+
+clang-version() {
+	_clang_fullversion '$1.$2' "$@"
+}
+
+clang-major-version() {
+	_clang_fullversion '$1' "$@"
+}
+
+clang-minor-version() {
+	_clang_fullversion '$2' "$@"
+}
+
+clang-micro-version() {
+	_clang_fullversion '$3' "$@"
+}
+
+pkg_pretend() {
+	if [[ $(tc-getCC) == clang ]]; then
+		if [[ $(clang-major-version) -lt 6 ]]; then
+			eerror "Compilation with clang older than 6.0 is not supported"
+			die "Too old clang found"
+		fi
+		:
+	elif [[ $(gcc-major-version) -lt 7 ]] && [[$(gcc-minor-version) -lt 2 ]]; then
+		eerror "Compilation with gcc older than 7.2 is not supported"
+		die "Too old gcc found"
+	fi
+}
+
+src_unpack() {
+	default_src_unpack
+	[[ ${PV} == 9999 ]] && return 0
+	cd "${S}/contrib" || die "failed to cd to contrib"
+	mkdir -p cctz zstd || die "failed to create directories"
+	tar --strip-components=1 -C cctz -xf "${DISTDIR}/cctz-${CCTZ_COMMIT}.tar.gz" || die "failed to unpack cctz"
+}
+
+src_prepare() {
+	eapply_user
+	cmake-utils_src_prepare
+}
+src_configure() {
+	local mycmakeargs=(
+		-DENABLE_POCO_MONGODB="$(usex mongodb)"
+		-DENABLE_RDKAFKA="$(usex kafka)"
+		-DENABLE_TESTS="$(usex test)"
+		-DUSE_STATIC_LIBRARIES="$(usex static)"
+		-DMAKE_STATIC_LIBRARIES="$(usex static)"
+		-DUSE_MYSQL="$(usex mysql)"
+		-DENABLE_CLICKHOUSE_SERVER="$(usex server)"
+		-DENABLE_CLICKHOUSE_CLIENT="$(usex client)"
+		-DENABLE_CLICKHOUSE_LOCAL="$(usex tools)"
+		-DENABLE_CLICKHOUSE_BENCHMARK="$(usex tools)"
+		-DENABLE_CLICKHOUSE_PERFORMANCE="$(usex tools)"
+		-DENABLE_CLICKHOUSE_EXTRACT_FROM_CONFIG="$(usex tools)"
+		-DENABLE_CLICKHOUSE_COMPRESSOR="$(usex tools)"
+		-DENABLE_CLICKHOUSE_COPIER="$(usex tools)"
+		# As of now, clickhouse fails to build if odbc is disabled
+		-DENABLE_ODBC=True
+		-DENABLE_CLICKHOUSE_ODBC_BRIDGE=True
+		-DENABLE_CLICKHOUSE_ALL=OFF
+		-DUSE_INTERNAL_SSL_LIBRARY=False
+		-DUSE_INTERNAL_CITYHASH_LIBRARY=ON # Clickhouse explicitly requires bundled patched cityhash
+		-DUNBUNDLED=ON
+	)
+
+	cmake-utils_src_configure
+}
+
+src_install() {
+	cmake-utils_src_install
+
+	if ! use test; then
+		rm -rf "${D}/usr/share/clickhouse-test" || die "failed to remove tests"
+	fi
+
+	if use doc; then
+		pushd "${S}/docs/tools" || die "Failed to enter docs build directory"
+		./build.py || die "Failed to build docs"
+		popd || die "Failed to exit docs build directory"
+
+		dodoc -r "${S}/docs/build"
+	fi
+
+	if use server; then
+		newinitd "${FILESDIR}"/clickhouse-server.initd clickhouse-server
+		systemd_dounit "${FILESDIR}"/clickhouse-server.service
+	fi
+
+	keepdir /var/log/clickhouse-server
+	chown clickhouse:clickhouse "${D}"/var/log/clickhouse-server
+}
+
+pkg_preinst() {
+	if use server; then
+		enewgroup clickhouse
+		enewuser clickhouse -1 -1 /var/lib/clickhouse clickhouse
+	fi
+}
diff --git a/dev-db/clickhouse/clickhouse-19.9.5.36-r1.ebuild b/dev-db/clickhouse/clickhouse-19.9.5.36-r1.ebuild
new file mode 100644
index 000000000000..92f6800a614a
--- /dev/null
+++ b/dev-db/clickhouse/clickhouse-19.9.5.36-r1.ebuild
@@ -0,0 +1,203 @@
+# Copyright 1999-2019 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+CMAKE_MAKEFILE_GENERATOR="ninja"
+
+inherit cmake-utils systemd toolchain-funcs user
+
+DESCRIPTION="An OSS column-oriented database management system for real-time data analysis"
+HOMEPAGE="https://clickhouse.yandex"
+LICENSE="Apache-2.0"
+
+MY_PN="ClickHouse"
+TYPE="stable"
+
+CCTZ_COMMIT="4f9776a"
+SRC_URI="https://github.com/yandex/${MY_PN}/archive/v${PV}-${TYPE}.zip -> ${P}.zip
+	https://github.com/google/cctz/archive/${CCTZ_COMMIT}.tar.gz -> cctz-${CCTZ_COMMIT}.tar.gz
+"
+
+SLOT="0/${TYPE}"
+IUSE="+client cpu_flags_x86_sse4_2 +server debug doc kafka mongodb mysql static test tools"
+RESTRICT="!test? ( test )"
+KEYWORDS="~amd64"
+
+REQUIRED_USE="
+	server? ( cpu_flags_x86_sse4_2 )
+	static? ( client server tools )
+"
+
+RDEPEND="
+	dev-libs/re2:0=
+	!static? (
+		>=app-arch/lz4-1.8.0:=
+		>=app-arch/zstd-1.3.4:=
+		client? (
+			sys-libs/ncurses:0=
+			sys-libs/readline:0=
+		)
+
+		dev-libs/double-conversion
+		dev-libs/capnproto
+		dev-libs/libltdl:0
+		sys-libs/libunwind:7
+		sys-libs/zlib
+		dev-libs/poco[odbc]
+		dev-libs/icu:=
+		dev-libs/glib
+		>=dev-libs/boost-1.65.0:=
+		dev-libs/openssl:0=
+		kafka? ( dev-libs/librdkafka:= )
+		mysql? ( dev-db/mysql-connector-c:= )
+	)
+
+	>=dev-libs/poco-1.9.0
+	dev-libs/libpcre
+	dev-libs/jemalloc
+"
+
+DEPEND="${RDEPEND}
+	doc? ( >=dev-python/mkdocs-1.0.1 )
+	static? (
+		>=app-arch/lz4-1.8.0[static-libs]
+		>=app-arch/zstd-1.3.4[static-libs]
+		client? (
+			sys-libs/ncurses:0=[static-libs]
+			sys-libs/readline:0=[static-libs]
+		)
+		dev-libs/capnproto[static-libs]
+		dev-libs/libltdl[static-libs]
+		sys-libs/libunwind:7[static-libs]
+		sys-libs/zlib[static-libs]
+		|| (
+			dev-db/unixODBC[static-libs]
+			dev-libs/poco[odbc]
+		)
+		dev-libs/icu[static-libs]
+		dev-libs/glib[static-libs]
+		>=dev-libs/boost-1.65.0[static-libs]
+		dev-libs/openssl[static-libs]
+		dev-db/mysql-connector-c[static-libs]
+		kafka? ( dev-libs/librdkafka[static-libs] )
+	)
+
+	sys-libs/libtermcap-compat
+	dev-util/patchelf
+	>=sys-devel/lld-6.0.0
+	>=sys-devel/gcc-7.0
+	>=sys-devel/clang-6.0
+"
+
+S="${WORKDIR}/${MY_PN}-${PV}-${TYPE}"
+
+_clang_fullversion() {
+	local ver="$1"; shift
+	set -- $($(tc-getCPP "$@") -E -P - <<<"__clang_major__ __clang_minor__ __clang_patchlevel__")
+	eval echo "$ver"
+}
+
+clang-fullversion() {
+	_clang_fullversion '$1.$2.$3' "$@"
+}
+
+clang-version() {
+	_clang_fullversion '$1.$2' "$@"
+}
+
+clang-major-version() {
+	_clang_fullversion '$1' "$@"
+}
+
+clang-minor-version() {
+	_clang_fullversion '$2' "$@"
+}
+
+clang-micro-version() {
+	_clang_fullversion '$3' "$@"
+}
+
+pkg_pretend() {
+	if [[ $(tc-getCC) == clang ]]; then
+		if [[ $(clang-major-version) -lt 6 ]]; then
+			eerror "Compilation with clang older than 6.0 is not supported"
+			die "Too old clang found"
+		fi
+		:
+	elif [[ $(gcc-major-version) -lt 7 ]] && [[$(gcc-minor-version) -lt 2 ]]; then
+		eerror "Compilation with gcc older than 7.2 is not supported"
+		die "Too old gcc found"
+	fi
+}
+
+src_unpack() {
+	default_src_unpack
+	[[ ${PV} == 9999 ]] && return 0
+	cd "${S}/contrib" || die "failed to cd to contrib"
+	mkdir -p cctz zstd || die "failed to create directories"
+	tar --strip-components=1 -C cctz -xf "${DISTDIR}/cctz-${CCTZ_COMMIT}.tar.gz" || die "failed to unpack cctz"
+}
+
+src_prepare() {
+	eapply_user
+	cmake-utils_src_prepare
+}
+src_configure() {
+	local mycmakeargs=(
+		-DENABLE_POCO_MONGODB="$(usex mongodb)"
+		-DENABLE_RDKAFKA="$(usex kafka)"
+		-DENABLE_TESTS="$(usex test)"
+		-DUSE_STATIC_LIBRARIES="$(usex static)"
+		-DMAKE_STATIC_LIBRARIES="$(usex static)"
+		-DUSE_MYSQL="$(usex mysql)"
+		-DENABLE_CLICKHOUSE_SERVER="$(usex server)"
+		-DENABLE_CLICKHOUSE_CLIENT="$(usex client)"
+		-DENABLE_CLICKHOUSE_LOCAL="$(usex tools)"
+		-DENABLE_CLICKHOUSE_BENCHMARK="$(usex tools)"
+		-DENABLE_CLICKHOUSE_PERFORMANCE="$(usex tools)"
+		-DENABLE_CLICKHOUSE_EXTRACT_FROM_CONFIG="$(usex tools)"
+		-DENABLE_CLICKHOUSE_COMPRESSOR="$(usex tools)"
+		-DENABLE_CLICKHOUSE_COPIER="$(usex tools)"
+		# As of now, clickhouse fails to build if odbc is disabled
+		-DENABLE_ODBC=True
+		-DENABLE_CLICKHOUSE_ODBC_BRIDGE=True
+		-DENABLE_CLICKHOUSE_ALL=OFF
+		-DUSE_INTERNAL_SSL_LIBRARY=False
+		-DUSE_INTERNAL_CITYHASH_LIBRARY=ON # Clickhouse explicitly requires bundled patched cityhash
+		-DUNBUNDLED=ON
+	)
+
+	cmake-utils_src_configure
+}
+
+src_install() {
+	cmake-utils_src_install
+
+	if ! use test; then
+		rm -rf "${D}/usr/share/clickhouse-test" || die "failed to remove tests"
+	fi
+
+	if use doc; then
+		pushd "${S}/docs/tools" || die "Failed to enter docs build directory"
+		./build.py || die "Failed to build docs"
+		popd || die "Failed to exit docs build directory"
+
+		dodoc -r "${S}/docs/build"
+	fi
+
+	if use server; then
+		newinitd "${FILESDIR}"/clickhouse-server.initd clickhouse-server
+		systemd_dounit "${FILESDIR}"/clickhouse-server.service
+	fi
+
+	keepdir /var/log/clickhouse-server
+	chown clickhouse:clickhouse "${D}"/var/log/clickhouse-server
+}
+
+pkg_preinst() {
+	if use server; then
+		enewgroup clickhouse
+		enewuser clickhouse -1 -1 /var/lib/clickhouse clickhouse
+	fi
+}
diff --git a/dev-db/clickhouse/files/clickhouse-server.confd b/dev-db/clickhouse/files/clickhouse-server.confd
new file mode 100644
index 000000000000..0e7344672b4b
--- /dev/null
+++ b/dev-db/clickhouse/files/clickhouse-server.confd
@@ -0,0 +1,4 @@
+user="clickhouse"
+group="clickhouse"
+logdir="/var/log/clickhouse-server"
+
diff --git a/dev-db/clickhouse/files/clickhouse-server.initd b/dev-db/clickhouse/files/clickhouse-server.initd
new file mode 100644
index 000000000000..5e787c0c1fa6
--- /dev/null
+++ b/dev-db/clickhouse/files/clickhouse-server.initd
@@ -0,0 +1,16 @@
+#!/sbin/openrc-run
+# Copyright 1999-2018 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+pidfile="/run/clickhouse-server.pid"
+command_background=1
+command="/usr/bin/clickhouse-server"
+start_stop_daemon_args="--user clickhouse --group clickhouse \
+	--chdir /etc/clickhouse-server \
+	-1 /var/log/clickhouse-server/stdout.log \
+	-2 /var/log/clickhouse-server/stderr.log"
+
+depend() {
+	need net
+	after mongodb
+}
diff --git a/dev-db/clickhouse/files/clickhouse-server.initd-r1 b/dev-db/clickhouse/files/clickhouse-server.initd-r1
new file mode 100644
index 000000000000..efc11f5e54c0
--- /dev/null
+++ b/dev-db/clickhouse/files/clickhouse-server.initd-r1
@@ -0,0 +1,23 @@
+#!/sbin/openrc-run
+# Copyright 1999-2019 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+user="clickhouse"
+group="clickhouse"
+logdir="/var/log/clickhouse-server"
+pidfile="/run/clickhouse-server.pid"
+command_background=1
+command="/usr/bin/clickhouse-server"
+start_stop_daemon_args="--user ${user} --group ${group} \
+	--chdir /etc/clickhouse-server \
+	-1 ${logdir}/stdout.log \
+	-2 ${logdir}/stderr.log"
+
+depend() {
+	need net
+	after mongodb
+}
+
+start_pre() {
+    checkpath -m 0755 -o "${user}:${group}" -d "${logdir}"
+}
diff --git a/dev-db/clickhouse/files/clickhouse-server.service b/dev-db/clickhouse/files/clickhouse-server.service
new file mode 100644
index 000000000000..64d2cbacf6ec
--- /dev/null
+++ b/dev-db/clickhouse/files/clickhouse-server.service
@@ -0,0 +1,15 @@
+[Unit]
+Description=ClickHouse Server (analytic DBMS for big data)
+
+[Service]
+Type=simple
+User=clickhouse
+Group=clickhouse
+Restart=always
+RestartSec=30
+ExecStart=/usr/bin/clickhouse-server --config=/etc/clickhouse-server/config.xml
+LimitCORE=infinity
+LimitNOFILE=500000
+
+[Install]
+WantedBy=multi-user.target
diff --git a/dev-db/clickhouse/metadata.xml b/dev-db/clickhouse/metadata.xml
new file mode 100644
index 000000000000..bb224e97f7c5
--- /dev/null
+++ b/dev-db/clickhouse/metadata.xml
@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<!-- maintainer-needed -->
+	<upstream>
+		<remote-id type="github">yandex/Clickhouse</remote-id>
+	</upstream>
+	<use>
+		<flag name="client">Build CLI client.</flag>
+		<flag name="server">Build server.</flag>
+		<flag name="kafka">Enables support for kafka consumer.</flag>
+		<flag name="mongodb">Enabled support for MongoDB-based dictionaries</flag>
+		<flag name="tools">Build various tools, like benchmark, copier, etc.</flag>
+		<flag name="zookeeper">Enable support for clustering (based on Zookeeper).</flag>
+	</use>
+</pkgmetadata>