Update references to Gentoo

Gentoo has officially merged the ebuild into portage as of:
https://github.com/gentoo/gentoo/pull/9925

Let's update the readme and get rid of the `contrib/gentoo-bees`
directory, so we have no potentially outdated information in the future.

Signed-off-by: Kai Krakow <kai@kaishome.de>

README.md

@@ -367,16 +367,25 @@ Bees is available in Arch Linux AUR. Install with:
 
 `$ pacaur -S bees-git`
 
-Gentoo ebuild
+Gentoo package
--------------
+--------------
 
-Bees is available as a Gentoo ebuild. Just copy `bees-9999.ebuild` from
+Bees is officially available in Gentoo Portage. Just emerge a stable
-`contrib/gentoo` including the `files` subdirectory to your local
+version:
-overlay category `sys-fs`.
 
-You can copy the ebuild to match a Bees version number, and it will
+`$ emerge --ask bees`
-build that tagged version. It is partly supported since v0.5,
+
-previous versions won't work.
+or build a live version from git master:
+
+`$ emerge --ask =bees-9999`
+
+You can opt-out of building the support tools with
+
+`USE="-tools" emerge ...`
+
+If you want to start hacking on bees and contribute changes, just emerge
+the live version which automatically pulls in all required development
+packages.
 
 Build from source
 -----------------
@@ -400,7 +409,10 @@ Packaging
 ---------
 
 See 'Dependencies' below. Package maintainers can pick ideas for building and
-configuring the source package from the Gentoo ebuild in `contrib/gentoo`.
+configuring the source package from the Gentoo ebuild:
+
+https://github.com/gentoo/gentoo/tree/master/sys-fs/bees
+
 You can configure some build options by creating a file `localconf` and
 adjust settings for your distribution environment there.
 

contrib/gentoo-bees/metadata/layout.conf

@@ -1,18 +0,0 @@
-# manifest-hashes specify hashes used for new/updated entries
-# the current set went live on 2017-11-21, per 2017-11-12 Council meeting
-# https://archives.gentoo.org/gentoo-dev/message/ba2e5d9666ebd7e1bff1143485a37856
-manifest-hashes = BLAKE2B SHA512
-
-# The following hashes are required on all Manifest entries. If any
-# of them are missing, repoman will refetch and rehash old distfiles.
-# Otherwise, old distfiles will keep using their current hash set.
-manifest-required-hashes = BLAKE2B
-
-# No more old ChangeLogs in Git
-update-changelog = false
-
-# Sign Git commits, and NOT Manifests
-sign-commits = true
-sign-manifests = false
-
-masters = gentoo

contrib/gentoo-bees/profiles/repo_name

@@ -1 +0,0 @@
-bees

contrib/gentoo-bees/sys-fs/bees/Manifest

@@ -1,2 +0,0 @@
-EBUILD bees-9999.ebuild 2001 BLAKE2B 7fa1c9d043a4334579dfad3560d1593717e548c0d31695cf8ccf8ffe45f2347584c7da43b47cad873745f3c843207433c6b892a0469c5618f107c68f78fd5fe2 SHA512 d49266e007895c049e1c9f7e28ec2f649b386a6441eccba02ee411f14ad395925eecdaa8a747962ccc526f9e1d3aba9fd68f4452a1d276d4e5b7d48c80102cd8
-MISC metadata.xml 479 BLAKE2B ef5e110ba8d88f0188dbc0d12bec2ad45c51abf707656f6fe4e0fa498d933fe9c32c5dc4c9b446402ec686084459f9f075e52f33402810962c1ac6b149fb70c8 SHA512 3fcc136ed4c55323cac4f8cf542210eb77f73e2a80f95fcce2d688bc645f6e5126404776536dedc938b18287b54abbc264610cc2f587a42a3a8e6d7bf8415aaa

contrib/gentoo-bees/sys-fs/bees/bees-9999.ebuild

@@ -1,66 +0,0 @@
-# Copyright 1999-2018 Gentoo Foundation
-# Distributed under the terms of the GNU General Public License v2
-
-EAPI=7
-
-inherit linux-info
-
-DESCRIPTION="Best-Effort Extent-Same, a btrfs dedup agent"
-HOMEPAGE="https://github.com/Zygo/bees"
-
-if [[ ${PV} == "9999" ]] ; then
-	EGIT_REPO_URI="https://github.com/Zygo/bees.git"
-	inherit git-r3
-else
-	SRC_URI="https://github.com/Zygo/bees/archive/v${PV}.tar.gz -> ${P}.tar.gz"
-	KEYWORDS="~amd64"
-fi
-
-LICENSE="GPL-3"
-SLOT="0"
-IUSE="tools"
-
-DEPEND="
-	>=sys-apps/util-linux-2.30.2
-	>=sys-fs/btrfs-progs-4.1
-"
-RDEPEND="${DEPEND}"
-
-CONFIG_CHECK="~BTRFS_FS"
-ERROR_BTRFS_FS="CONFIG_BTRFS_FS: bees does currently only work with btrfs"
-
-pkg_pretend() {
-	if [[ ${MERGE_TYPE} != buildonly ]]; then
-		if kernel_is -lt 4 4 3; then
-			ewarn "Kernel versions below 4.4.3 lack critical features needed for bees to"
-			ewarn "properly operate, so it won't work. It's recommended to run at least"
-			ewarn "kernel version 4.11 for best performance and reliability."
-			ewarn
-		elif kernel_is -lt 4 11; then
-			ewarn "With kernel versions below 4.11, bees may severely degrade system performance"
-			ewarn "and responsiveness. Especially, the kernel may deadlock while bees is"
-			ewarn "running, it's recommended to run at least kernel 4.11."
-			ewarn
-		elif kernel_is -lt 4 14 29; then
-			ewarn "With kernel versions below 4.14.29, bees may generate a lot of bogus WARN_ON()"
-			ewarn "messages in the kernel log. These messages can be ignored and this is fixed"
-			ewarn "with more recent kernels:"
-			ewarn "# WARNING: CPU: 3 PID: 18172 at fs/btrfs/backref.c:1391 find_parent_nodes+0xc41/0x14e0"
-			ewarn
-		fi
-		elog "Bees recommends to run the latest current kernel for performance and"
-		elog "reliability reasons, see README.md."
-	fi
-}
-
-src_configure() {
-	cat >localconf <<-EOF || die
-		LIBEXEC_PREFIX=/usr/libexec
-		PREFIX=/usr
-		LIBDIR=$(get_libdir)
-		DEFAULT_MAKE_TARGET=all
-	EOF
-	if use tools; then
-		echo OPTIONAL_INSTALL_TARGETS=install_tools >>localconf || die
-	fi
-}

contrib/gentoo-bees/sys-fs/bees/metadata.xml

@@ -1,15 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
-<pkgmetadata>
-<maintainer type="person">
-	<email>hurikhan77+bgo@gmail.com</email>
-	<name>Kai Krakow</name>
-</maintainer>
-<use>
-	<flag name="tools">Build extra tools useful for debugging (fiemap, feiwalk, beestop)</flag>
-</use>
-<upstream>
-	<bugs-to>https://github.com/Zygo/bees/issues</bugs-to>
-	<remote-id type="github">Zygo/bees</remote-id>
-</upstream>
-</pkgmetadata>