new ebuild zfs-auto-snapshot - rev 92db087.

sys-fs/zfs-auto-snapshot/Manifest

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+AUX README.gentoo 684 BLAKE2B 7175ddfbb8dd5b209fa4fa5e5a3aeecac3fdd102e240f93b640f91bbf0204f9101801a94087383d7087bec08ae490e9769dfcf4f7f218d6daa4779087a8a0d23 SHA512 e77c3a573c2d4499df902b68909c186e4c80ba8b451b493c7e08e5e96ebe281933ce4b5fc11c201e33f27b14a02a35fd85270baf7ddece42a2fcbc6c3c421146
+DIST zfs-auto-snapshot-upstream-1.2.4.zip 18484 BLAKE2B 684bb39471a61a7725fee181125745f94dcd70363cec277bf399d287830e71b2555f85f276f4309ca27eeaa4807fb2beca0f101b9bad7501c286d1687f38a9c8 SHA512 3a3e9180888d7225826770976bd6d66614d582179700d4efeb7ee3bc392cd60c81a970ff4c94204865490a0a4f47ec7c07586a6dd47590637c263666a07c53a3
+EBUILD zfs-auto-snapshot-1.2.4-r1.ebuild 1524 BLAKE2B 97e855593ca53ad6a2f9b4ba83f79ee44e6e3a3552b7c9b7774c7cf2b177e06eb5dd0be5637792ed6b1ad8a3adee8b803017a844f33893e53b0c840f28a6a0fa SHA512 ac8cd8f74158ba08281fe082e1cbcc451321ca157a3b35bb70c4557a6b1a50373da8450b6efda7388a62380f83a4f0da7750aa4b9bc8ff586f8c3ba846ffd99f
+MISC metadata.xml 909 BLAKE2B 74eeac781ab385dfd962c316d6792c79ebdffed9084f3c7b071a13b502edb881555e4e9525a1c8c5f2fe0ca51241afbe430f7ce07fdbd4b2554c841f1837af85 SHA512 d98be1718d600b6a04af37294de1eb47e814c74ddf24d4e119d037554baf3f9b551ab43dabd1dcd70b35b65e9fb687325c04371d078757d26c07385ac72143c8

sys-fs/zfs-auto-snapshot/files/README.gentoo

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+Use com.sun:auto-snapshot attribute to enable snapshots for datasets
+the syntax is:
+
+zfs set com.sun:auto-snapshot=[true|false]
+
+or:
+
+zfs set com.sun:auto-snapshot:<frequent|hourly|daily|weekly|monthly>=[true|false]
+
+for example:
+
+# zfs set com.sun:auto-snapshot=false zroot
+Will disalbe all snapshots for zroot and all nested datasets will inherit the property.
+
+# zfs set com.sun:auto-snapshot=true zroot/ROOT/default
+Will enable all types of snapshots for given dataset.
+
+# zfs set com.sun:auto-snapshot:weekly=true pool/var
+Will enable only weekly snapshots for given dataset.
+
+for details please visit:
+https://docs.oracle.com/cd/E19120-01/open.solaris/817-2271/ghzuk/index.html

sys-fs/zfs-auto-snapshot/metadata.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="person">
+		<email>gyakovlev@gentoo.org</email>
+		<name>Georgy Yakovlev</name>
+	</maintainer>
+	<longdescription lang="en">
+		An alternative implementation of the zfs-auto-snapshot service for Linux
+		that is compatible with zfs-linux and zfs-fuse.
+
+		Automatically create, rotate, and destroy periodic ZFS snapshots. This is
+		the utility that creates the @zfs-auto-snap_frequent, @zfs-auto-snap_hourly,
+		@zfs-auto-snap_daily, @zfs-auto-snap_weekly, and @zfs-auto-snap_monthly
+		snapshots if it is installed.
+	</longdescription>
+	<use>
+		<flag name="default-exclude">Only take snapshots if dataset has com.sun:auto-snapshot=true property set</flag>
+	</use>
+
+	<upstream>
+		<remote-id type="github">zfsonlinux/zfs-auto-snapshot</remote-id>
+	</upstream>
+</pkgmetadata>

sys-fs/zfs-auto-snapshot/zfs-auto-snapshot-1.2.4-r1.ebuild

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+# Copyright 1999-2019 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+inherit readme.gentoo-r1
+
+# https://github.com/zfsonlinux/zfs-auto-snapshot/archive/92db087bb019957166ee70c88c6c967e5fd28a70.zip
+
+REV=92db087bb019957166ee70c88c6c967e5fd28a70
+if [[ ${PV} == 9999 ]]; then
+	inherit git-r3
+	EGIT_REPO_URI="https://github.com/zfsonlinux/${PN}.git"
+else
+	MY_P="${PN}-upstream-${PV}"
+	SRC_URI="https://github.com/zfsonlinux/${PN}/archive/${REV}.zip -> ${MY_P}.zip"
+	KEYWORDS="~amd64 ~ppc64"
+	S="${WORKDIR}/${PN}-${REV}"
+fi
+
+DESCRIPTION="ZFS Automatic Snapshot Service for Linux"
+HOMEPAGE="https://github.com/zfsonlinux/zfs-auto-snapshot"
+
+LICENSE="GPL-2+"
+SLOT="0"
+IUSE="+default-exclude"
+
+RDEPEND="sys-fs/zfs
+	virtual/cron"
+
+
+src_install() {
+	if use default-exclude; then
+		for cronfile in etc/"${PN}".cron.{daily,hourly,monthly,weekly}; do
+			sed -i "s/\(^exec ${PN}\)/\1 --default-exclude/" "${cronfile}" || die
+		done
+		sed -i "s/\(; ${PN}\)/\1 --default-exclude/" etc/"${PN}".cron.frequent || die
+	fi
+	readme.gentoo_create_doc
+	emake PREFIX="${EPREFIX}/usr" DESTDIR="${D}" install
+}
+
+pkg_postinst() {
+	readme.gentoo_print_elog
+
+	if ! use default-exclude; then
+		ewarn "snapshots are enabled by default for ALL zfs datasets"
+		ewarn "set com.sun:auto-snapshot=false or enable 'default-exclude' flag"
+		elog
+	fi
+
+	if has_version sys-process/fcron; then
+		ewarn "frequent snapshot may not work if you are using fcron"
+		ewarn "you should add frequent job to crontab manually"
+	fi
+}