Makefile and Gentoo ebuild created.

pkgs/gentoo/app-admin/gentoo-upgrade/Manifest

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+EBUILD gentoo-upgrade-9999.ebuild 825 RMD160 92209f5d2eecb5450a002f26b83b0ba288f8c221 SHA1 76408e285b45414a4dd2c43e3d7ff3f5755ddd9e SHA256 0f13eb577c6af3955eaf7054762ecbcd27e8f8281f874ff7604adf32b4d3f57c

pkgs/gentoo/app-admin/gentoo-upgrade/gentoo-upgrade-9999.ebuild

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+# Copyright 1999-2011 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Header: $
+
+EAPI=4
+
+inherit eutils
+
+if [[ ${PV} == "9999" ]] ; then
+	EGIT_REPO_URI=${EGIT_REPO_URI:-"git://github.com/backbone/gentoo-upgrade.git"}
+	inherit git-2
+	KEYWORDS=""
+else
+	SRC_URI="ftp://backbone.ws/projects/gentoo-upgrade/${P}.tar.bz2"
+	KEYWORDS="-* ~x86 ~amd64"
+fi
+
+DESCRIPTION="Automated Gentoo upgrading"
+
+HOMEPAGE="https://chili.backbone.ws/projects/gentoo-upgrade"
+
+SLOT="0"
+
+LICENSE="GPL-3"
+
+IUSE=""
+
+DEPEND=""
+
+RDEPEND="${DEPEND}"
+
+src_prepare() {
+	if [[ ${PV} == "9999" ]] ; then
+		# Allow user patches to be applied without modifying the ebuild
+		epatch_user
+	fi
+}
+
+src_install() {
+	if [[ ${PV} == "9999" ]] ; then
+		emake install DESTDIR="${D}"
+	else
+		emake install DESTDIR="${D}" || die
+	fi
+}