diff --git a/sys-fs/btrfs-progs/Manifest b/sys-fs/btrfs-progs/Manifest
index 1d4704c3a2990..018f260f8ccee 100644
--- a/sys-fs/btrfs-progs/Manifest
+++ b/sys-fs/btrfs-progs/Manifest
@@ -12,6 +12,7 @@ DIST btrfs-progs-v4.13.2.tar.xz 1673732 BLAKE2B 995c364a594d075dff088247cc8f745a
 DIST btrfs-progs-v4.13.3.tar.xz 1674084 BLAKE2B 1ce0747e776253a8e93613705e4aa3bc704367b54939e010e2dc69a114760041b5d85b6a7370f6919010f694792dda280a1891c9f6193ad95c98317b5730784b SHA512 6db18197ab48a43da5212ead2fdd4a6d0c9eb035cd5ce40fdb5e6e39a69dd118aa0112246df8cb4a339665c20c39479d630e03ccc1ffea3017646695e1c5f833
 DIST btrfs-progs-v4.14.1.tar.xz 1926492 BLAKE2B 35575946c1de9cb81f1aed2a5be2433149b6aae5e8602cef4c892f7e5fa1160e4b8bbed354bf36c90d3a6a4d6856b57cb10e632a9fba47b1f0b312098a6393da SHA512 e01a52a84bc0de81e7173fda46c12fbd451b5117014008033e16c7bf48165065c6362d812a95ade17c01f62f66755b4c7ab11dd22804eb3bdfc56346a161e2a6
 DIST btrfs-progs-v4.14.tar.xz 1697584 BLAKE2B 8d5aeb251ab6ede72507db926fb21afddbfc87a9a25d330bcaa933971fc19831b9c9f452bfead836bfaeb0cdf21b0d09d8eb6f98e5be0424566f0d7b4c190937 SHA512 11171e6730f4aa102bdb4cd405da2d4c55e2c102fec4cc6d3135df516c78af1c34fede722a1677bd9c638b47e77085e005b29333ae70b98771501e32628890f7
+DIST btrfs-progs-v4.15-rc1.tar.xz 1929368 BLAKE2B a3372ac7389bfc820a389a5f9d324121b788b133e6e59cc336ed07222a4d312acb30176ed611fab33a7131852048f984a980cdc999e818ee82241c9a2efe37a5 SHA512 a6072fc9f60962ca94474450339de15dcc7dbf7329fbd6b66406c55275132f5cc9c98bf274529d12ebcb38838e778714804735750c9e787a971026b86caa0473
 DIST btrfs-progs-v4.2.2.tar.xz 1143760 BLAKE2B 4a4aa9c55e03548e361308682dd24da96d98f32a5867fb1f15112f91f9911d59a7d5b4386f7585a1ade59b95a45bc149c0566746dbd7c4503c25bd55983dac3d SHA512 2ad23546b3bb421faad1f67da37566b6ae1887c5340c0f1d06ca59fc0cd0fb1060d92e74e36ba7bfd85b0aff30811525654cd03b7d3570b0b51c2d8e2d6d9a76
 DIST btrfs-progs-v4.3.1.tar.xz 1184416 BLAKE2B 395fd772a757f9f8de96ff0f3df991678b560c88f120b51d612fcaef79f760a347c94c66d0156724d79e2aaad0312119d3cdece22c4f50a89566e664ea5b9d01 SHA512 661c7c05ee3527cc34f3aa08e88e252e6e836a86752f7e607e3f6dc0a9a861d3bc645a6fa0a5af5f6abfe4f3f2f7e193cffc2bb1c53595e0b7f99c3ff59daeff
 DIST btrfs-progs-v4.4.1.tar.xz 1173248 BLAKE2B 8bf07a3bc3d24a3f641c2dc7a6353f186ebd98f7a633bdbc2689359e6204b3f1db76accee3e648634f319e26b57e6376c13fa31d39413908d0b2308e0ae28d0e SHA512 3086e2e0385d9e14edcfa25e1aee1ed98087dd5b91a66aa450786c932d79841b5c4ee3f9a40b8fdecee0ba1e386196b89679d28e58e4924ce66cd78c5e3c0d4a
diff --git a/sys-fs/btrfs-progs/btrfs-progs-4.15_rc1.ebuild b/sys-fs/btrfs-progs/btrfs-progs-4.15_rc1.ebuild
new file mode 100644
index 0000000000000..0b955eb22a02f
--- /dev/null
+++ b/sys-fs/btrfs-progs/btrfs-progs-4.15_rc1.ebuild
@@ -0,0 +1,104 @@
+# Copyright 1999-2018 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+inherit bash-completion-r1
+
+libbtrfs_soname=0
+
+if [[ ${PV} != 9999 ]]; then
+	MY_PV="v${PV/_/-}"
+	[[ "${PV}" = *_rc* ]] || \
+	KEYWORDS="~amd64 ~arm ~arm64 ~ia64 ~mips ~ppc ~ppc64 ~sparc ~x86"
+	SRC_URI="https://www.kernel.org/pub/linux/kernel/people/kdave/${PN}/${PN}-${MY_PV}.tar.xz"
+	S="${WORKDIR}"/${PN}-${MY_PV}
+else
+	WANT_LIBTOOL=none
+	inherit autotools git-r3
+	EGIT_REPO_URI="https://github.com/kdave/btrfs-progs.git"
+	EGIT_BRANCH="devel"
+fi
+
+DESCRIPTION="Btrfs filesystem utilities"
+HOMEPAGE="https://btrfs.wiki.kernel.org"
+
+LICENSE="GPL-2"
+SLOT="0/${libbtrfs_soname}"
+IUSE="+convert reiserfs static static-libs +zstd"
+
+RESTRICT=test # tries to mount repared filesystems
+
+RDEPEND="
+	dev-libs/lzo:2=
+	sys-apps/util-linux:0=[static-libs(+)?]
+	sys-libs/zlib:0=
+	convert? (
+		sys-fs/e2fsprogs:0=
+		sys-libs/e2fsprogs-libs:0=
+		reiserfs? (
+			>=sys-fs/reiserfsprogs-3.6.27
+		)
+	)
+	zstd? ( app-arch/zstd:0= )
+"
+DEPEND="${RDEPEND}
+	convert? ( sys-apps/acl )
+	>=app-text/asciidoc-8.6.0
+	app-text/docbook-xml-dtd:4.5
+	app-text/xmlto
+	static? (
+		dev-libs/lzo:2[static-libs(+)]
+		sys-apps/util-linux:0[static-libs(+)]
+		sys-libs/zlib:0[static-libs(+)]
+		convert? (
+			sys-fs/e2fsprogs:0[static-libs(+)]
+			sys-libs/e2fsprogs-libs:0[static-libs(+)]
+			reiserfs? (
+				>=sys-fs/reiserfsprogs-3.6.27[static-libs(+)]
+			)
+		)
+		zstd? ( app-arch/zstd:0[static-libs(+)] )
+	)
+"
+
+if [[ ${PV} == 9999 ]]; then
+	DEPEND+=" sys-devel/gnuconfig"
+fi
+
+src_prepare() {
+	default
+	if [[ ${PV} == 9999 ]]; then
+		AT_M4DIR=m4 eautoreconf
+		mkdir config || die
+		local automakedir="$(autotools_run_tool --at-output automake --print-libdir)"
+		[[ -e ${automakedir} ]] || die "Could not locate automake directory"
+		ln -s "${automakedir}"/install-sh config/install-sh || die
+		ln -s "${EPREFIX}"/usr/share/gnuconfig/config.guess config/config.guess || die
+		ln -s "${EPREFIX}"/usr/share/gnuconfig/config.sub config/config.sub || die
+	fi
+}
+
+src_configure() {
+	local myeconfargs=(
+		--bindir="${EPREFIX}"/sbin
+		$(use_enable convert)
+		$(use_enable elibc_glibc backtrace)
+		$(use_enable zstd)
+		--with-convert=ext2$(usex reiserfs ',reiserfs' '')
+	)
+	econf "${myeconfargs[@]}"
+}
+
+src_compile() {
+	emake V=1 all $(usev static)
+}
+
+src_install() {
+	local makeargs=(
+		$(usex static-libs '' 'libs_static=')
+		$(usex static install-static '')
+	)
+	emake V=1 DESTDIR="${D}" install "${makeargs[@]}"
+	newbashcomp btrfs-completion btrfs
+}