[gentoo-commits] proj/lisp:master commit in: eclass/

[Ulrich Müller]

commit:     789ec9a122f5d86578693be4c35ec99a9aa09da7
Author:     Ulrich Müller <ulm <AT> gentoo <DOT> org>
AuthorDate: Tue Feb 11 21:25:04 2020 +0000
Commit:     Ulrich Müller <ulm <AT> gentoo <DOT> org>
CommitDate: Tue Feb 11 21:25:04 2020 +0000
URL:        https://gitweb.gentoo.org/proj/lisp.git/commit/?id=789ec9a1

git-2.eclass: Copied from Gentoo repository.

Signed-off-by: Ulrich Müller <ulm <AT> gentoo.org>

 eclass/git-2.eclass | 610 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 610 insertions(+)

diff --git a/eclass/git-2.eclass b/eclass/git-2.eclass
new file mode 100644
index 00000000..91716329
--- /dev/null
+++ b/eclass/git-2.eclass
@@ -0,0 +1,610 @@
+# Copyright 1999-2019 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+# @ECLASS: git-2.eclass
+# @MAINTAINER:
+# maintainer-needed@g.o
+# @SUPPORTED_EAPIS: 0 1 2 3 4 5
+# @BLURB: Eclass for fetching and unpacking git repositories.
+# @DESCRIPTION:
+# Eclass for easing maintenance of live ebuilds using git as remote repository.
+# Eclass support working with git submodules and branching.
+#
+# This eclass is DEPRECATED. Please use git-r3 instead.
+
+case ${EAPI:-0} in
+	0|1|2|3|4|5) ;;
+	*) die "${ECLASS}.eclass is banned in EAPI ${EAPI}";;
+esac
+
+# This eclass support all EAPIs.
+EXPORT_FUNCTIONS src_unpack
+
+PROPERTIES+=" live"
+
+DEPEND="dev-vcs/git"
+
+# @ECLASS-VARIABLE: EGIT_SOURCEDIR
+# @DESCRIPTION:
+# This variable specifies destination where the cloned
+# data are copied to.
+#
+# EGIT_SOURCEDIR="${S}"
+
+# @ECLASS-VARIABLE: EGIT_STORE_DIR
+# @DESCRIPTION:
+# Storage directory for git sources.
+#
+# EGIT_STORE_DIR="${DISTDIR}/egit-src"
+
+# @ECLASS-VARIABLE: EGIT_HAS_SUBMODULES
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# If non-empty this variable enables support for git submodules in our
+# checkout. Also this makes the checkout to be non-bare for now.
+
+# @ECLASS-VARIABLE: EGIT_OPTIONS
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# Variable specifying additional options for fetch command.
+
+# @ECLASS-VARIABLE: EGIT_MASTER
+# @DESCRIPTION:
+# Variable for specifying master branch.
+# Useful when upstream don't have master branch or name it differently.
+#
+# EGIT_MASTER="master"
+
+# @ECLASS-VARIABLE: EGIT_PROJECT
+# @DESCRIPTION:
+# Variable specifying name for the folder where we check out the git
+# repository. Value of this variable should be unique in the
+# EGIT_STORE_DIR as otherwise you would override another repository.
+#
+# EGIT_PROJECT="${EGIT_REPO_URI##*/}"
+
+# @ECLASS-VARIABLE: EGIT_DIR
+# @DESCRIPTION:
+# Directory where we want to store the git data.
+# This variable should not be overridden.
+#
+# EGIT_DIR="${EGIT_STORE_DIR}/${EGIT_PROJECT}"
+
+# @ECLASS-VARIABLE: EGIT_REPO_URI
+# @REQUIRED
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# URI for the repository
+# e.g. http://foo, git://bar
+#
+# It can be overridden via env using packagename_LIVE_REPO
+# variable.
+#
+# Support multiple values:
+# EGIT_REPO_URI="git://a/b.git http://c/d.git"
+
+# @ECLASS-VARIABLE: EVCS_OFFLINE
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# If non-empty this variable prevents performance of any online
+# operations.
+
+# @ECLASS-VARIABLE: EGIT_BRANCH
+# @DESCRIPTION:
+# Variable containing branch name we want to check out.
+# It can be overridden via env using packagename_LIVE_BRANCH
+# variable.
+#
+# EGIT_BRANCH="${EGIT_MASTER}"
+
+# @ECLASS-VARIABLE: EGIT_COMMIT
+# @DESCRIPTION:
+# Variable containing commit hash/tag we want to check out.
+# It can be overridden via env using packagename_LIVE_COMMIT
+# variable.
+#
+# EGIT_COMMIT="${EGIT_BRANCH}"
+
+# @ECLASS-VARIABLE: EGIT_REPACK
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# If non-empty this variable specifies that repository will be repacked to
+# save space. However this can take a REALLY LONG time with VERY big
+# repositories.
+
+# @ECLASS-VARIABLE: EGIT_PRUNE
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# If non-empty this variable enables pruning all loose objects on each fetch.
+# This is useful if upstream rewinds and rebases branches often.
+
+# @ECLASS-VARIABLE: EGIT_NONBARE
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# If non-empty this variable specifies that all checkouts will be done using
+# non bare repositories. This is useful if you can't operate with bare
+# checkouts for some reason.
+
+# @ECLASS-VARIABLE: EGIT_NOUNPACK
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# If non-empty this variable bans unpacking of ${A} content into the srcdir.
+# Default behavior is to unpack ${A} content.
+
+# @FUNCTION: git-2_init_variables
+# @INTERNAL
+# @DESCRIPTION:
+# Internal function initializing all git variables.
+# We define it in function scope so user can define
+# all the variables before and after inherit.
+git-2_init_variables() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	local esc_pn liverepo livebranch livecommit
+	esc_pn=${PN//[-+]/_}
+
+	: ${EGIT_SOURCEDIR="${S}"}
+
+	: ${EGIT_STORE_DIR:="${PORTAGE_ACTUAL_DISTDIR-${DISTDIR}}/egit-src"}
+
+	: ${EGIT_HAS_SUBMODULES:=}
+
+	: ${EGIT_OPTIONS:=}
+
+	: ${EGIT_MASTER:=master}
+
+	liverepo=${esc_pn}_LIVE_REPO
+	EGIT_REPO_URI=${!liverepo:-${EGIT_REPO_URI}}
+	[[ ${EGIT_REPO_URI} ]] || die "EGIT_REPO_URI must have some value"
+
+	: ${EVCS_OFFLINE:=}
+
+	livebranch=${esc_pn}_LIVE_BRANCH
+	[[ ${!livebranch} ]] && ewarn "QA: using \"${esc_pn}_LIVE_BRANCH\" variable, you won't get any support"
+	EGIT_BRANCH=${!livebranch:-${EGIT_BRANCH:-${EGIT_MASTER}}}
+
+	livecommit=${esc_pn}_LIVE_COMMIT
+	[[ ${!livecommit} ]] && ewarn "QA: using \"${esc_pn}_LIVE_COMMIT\" variable, you won't get any support"
+	EGIT_COMMIT=${!livecommit:-${EGIT_COMMIT:-${EGIT_BRANCH}}}
+
+	: ${EGIT_REPACK:=}
+
+	: ${EGIT_PRUNE:=}
+}
+
+# @FUNCTION: git-2_submodules
+# @INTERNAL
+# @DESCRIPTION:
+# Internal function wrapping the submodule initialisation and update.
+git-2_submodules() {
+	debug-print-function ${FUNCNAME} "$@"
+	if [[ ${EGIT_HAS_SUBMODULES} ]]; then
+		if [[ ${EVCS_OFFLINE} ]]; then
+			# for submodules operations we need to be online
+			debug-print "${FUNCNAME}: not updating submodules in offline mode"
+			return 1
+		fi
+
+		debug-print "${FUNCNAME}: working in \"${1}\""
+		pushd "${EGIT_DIR}" > /dev/null || die
+
+		debug-print "${FUNCNAME}: git submodule init"
+		git submodule init || die
+		debug-print "${FUNCNAME}: git submodule sync"
+		git submodule sync || die
+		debug-print "${FUNCNAME}: git submodule update"
+		git submodule update || die
+
+		popd > /dev/null || die
+	fi
+}
+
+# @FUNCTION: git-2_branch
+# @INTERNAL
+# @DESCRIPTION:
+# Internal function that changes branch for the repo based on EGIT_COMMIT and
+# EGIT_BRANCH variables.
+git-2_branch() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	local branchname src
+
+	debug-print "${FUNCNAME}: working in \"${EGIT_SOURCEDIR}\""
+	pushd "${EGIT_SOURCEDIR}" > /dev/null || die
+
+	local branchname=branch-${EGIT_BRANCH} src=origin/${EGIT_BRANCH}
+	if [[ ${EGIT_COMMIT} != ${EGIT_BRANCH} ]]; then
+		branchname=tree-${EGIT_COMMIT}
+		src=${EGIT_COMMIT}
+	fi
+	debug-print "${FUNCNAME}: git checkout -b ${branchname} ${src}"
+	git checkout -b ${branchname} ${src} \
+		|| die "${FUNCNAME}: changing the branch failed"
+
+	popd > /dev/null || die
+}
+
+# @FUNCTION: git-2_gc
+# @INTERNAL
+# @DESCRIPTION:
+# Internal function running garbage collector on checked out tree.
+git-2_gc() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	local args
+
+	if [[ ${EGIT_REPACK} || ${EGIT_PRUNE} ]]; then
+		pushd "${EGIT_DIR}" > /dev/null || die
+		ebegin "Garbage collecting the repository"
+		[[ ${EGIT_PRUNE} ]] && args='--prune'
+		debug-print "${FUNCNAME}: git gc ${args}"
+		git gc ${args}
+		eend $?
+		popd > /dev/null || die
+	fi
+}
+
+# @FUNCTION: git-2_prepare_storedir
+# @INTERNAL
+# @DESCRIPTION:
+# Internal function preparing directory where we are going to store SCM
+# repository.
+git-2_prepare_storedir() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	local clone_dir
+
+	# initial clone, we have to create master git storage directory and play
+	# nicely with sandbox
+	if [[ ! -d ${EGIT_STORE_DIR} ]]; then
+		debug-print "${FUNCNAME}: Creating git main storage directory"
+		addwrite /
+		mkdir -m 775 -p "${EGIT_STORE_DIR}" \
+			|| die "${FUNCNAME}: can't mkdir \"${EGIT_STORE_DIR}\""
+	fi
+
+	# allow writing into EGIT_STORE_DIR
+	addwrite "${EGIT_STORE_DIR}"
+
+	# calculate git.eclass store dir for data
+	# We will try to clone the old repository,
+	# and we will remove it if we don't need it anymore.
+	EGIT_OLD_CLONE=
+	if [[ ${EGIT_STORE_DIR} == */egit-src ]]; then
+		local old_store_dir=${EGIT_STORE_DIR/%egit-src/git-src}
+		local old_location=${old_store_dir}/${EGIT_PROJECT:-${PN}}
+
+		if [[ -d ${old_location} ]]; then
+			EGIT_OLD_CLONE=${old_location}
+			# required to remove the old clone
+			addwrite "${old_store_dir}"
+		fi
+	fi
+
+	# calculate the proper store dir for data
+	# If user didn't specify the EGIT_DIR, we check if he did specify
+	# the EGIT_PROJECT or get the folder name from EGIT_REPO_URI.
+	EGIT_REPO_URI=${EGIT_REPO_URI%/}
+	if [[ ! ${EGIT_DIR} ]]; then
+		if [[ ${EGIT_PROJECT} ]]; then
+			clone_dir=${EGIT_PROJECT}
+		else
+			local strippeduri=${EGIT_REPO_URI%/.git}
+			clone_dir=${strippeduri##*/}
+		fi
+		EGIT_DIR=${EGIT_STORE_DIR}/${clone_dir}
+
+		if [[ ${EGIT_OLD_CLONE} && ! -d ${EGIT_DIR} ]]; then
+			elog "${FUNCNAME}: ${CATEGORY}/${PF} will be cloned from old location."
+			elog "It will be necessary to rebuild the package to fetch updates."
+			EGIT_REPO_URI="${EGIT_OLD_CLONE} ${EGIT_REPO_URI}"
+		fi
+	fi
+	export EGIT_DIR=${EGIT_DIR}
+	debug-print "${FUNCNAME}: Storing the repo into \"${EGIT_DIR}\"."
+}
+
+# @FUNCTION: git-2_move_source
+# @INTERNAL
+# @DESCRIPTION:
+# Internal function moving sources from the EGIT_DIR to EGIT_SOURCEDIR dir.
+git-2_move_source() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	debug-print "${FUNCNAME}: ${MOVE_COMMAND} \"${EGIT_DIR}\" \"${EGIT_SOURCEDIR}\""
+	pushd "${EGIT_DIR}" > /dev/null || die
+	mkdir -p "${EGIT_SOURCEDIR}" \
+		|| die "${FUNCNAME}: failed to create ${EGIT_SOURCEDIR}"
+	${MOVE_COMMAND} "${EGIT_SOURCEDIR}" \
+		|| die "${FUNCNAME}: sync to \"${EGIT_SOURCEDIR}\" failed"
+	popd > /dev/null || die
+}
+
+# @FUNCTION: git-2_initial_clone
+# @INTERNAL
+# @DESCRIPTION:
+# Internal function running initial clone on specified repo_uri.
+git-2_initial_clone() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	local repo_uri
+
+	EGIT_REPO_URI_SELECTED=""
+	for repo_uri in ${EGIT_REPO_URI}; do
+		debug-print "${FUNCNAME}: git clone ${EGIT_LOCAL_OPTIONS} \"${repo_uri}\" \"${EGIT_DIR}\""
+		if git clone ${EGIT_LOCAL_OPTIONS} "${repo_uri}" "${EGIT_DIR}"; then
+			# global variable containing the repo_name we will be using
+			debug-print "${FUNCNAME}: EGIT_REPO_URI_SELECTED=\"${repo_uri}\""
+			EGIT_REPO_URI_SELECTED="${repo_uri}"
+			break
+		fi
+	done
+
+	[[ ${EGIT_REPO_URI_SELECTED} ]] \
+		|| die "${FUNCNAME}: can't fetch from ${EGIT_REPO_URI}"
+}
+
+# @FUNCTION: git-2_update_repo
+# @INTERNAL
+# @DESCRIPTION:
+# Internal function running update command on specified repo_uri.
+git-2_update_repo() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	local repo_uri
+
+	if [[ ${EGIT_LOCAL_NONBARE} ]]; then
+		# checkout master branch and drop all other local branches
+		git checkout ${EGIT_MASTER} || die "${FUNCNAME}: can't checkout master branch ${EGIT_MASTER}"
+		for x in $(git branch | grep -v "* ${EGIT_MASTER}" | tr '\n' ' '); do
+			debug-print "${FUNCNAME}: git branch -D ${x}"
+			git branch -D ${x} > /dev/null
+		done
+	fi
+
+	EGIT_REPO_URI_SELECTED=""
+	for repo_uri in ${EGIT_REPO_URI}; do
+		# git urls might change, so reset it
+		git config remote.origin.url "${repo_uri}"
+
+		debug-print "${EGIT_UPDATE_CMD}"
+		if ${EGIT_UPDATE_CMD} > /dev/null; then
+			# global variable containing the repo_name we will be using
+			debug-print "${FUNCNAME}: EGIT_REPO_URI_SELECTED=\"${repo_uri}\""
+			EGIT_REPO_URI_SELECTED="${repo_uri}"
+			break
+		fi
+	done
+
+	[[ ${EGIT_REPO_URI_SELECTED} ]] \
+		|| die "${FUNCNAME}: can't update from ${EGIT_REPO_URI}"
+}
+
+# @FUNCTION: git-2_fetch
+# @INTERNAL
+# @DESCRIPTION:
+# Internal function fetching repository from EGIT_REPO_URI and storing it in
+# specified EGIT_STORE_DIR.
+git-2_fetch() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	local oldsha cursha repo_type
+
+	[[ ${EGIT_LOCAL_NONBARE} ]] && repo_type="non-bare repository" || repo_type="bare repository"
+
+	if [[ ! -d ${EGIT_DIR} ]]; then
+		git-2_initial_clone
+		pushd "${EGIT_DIR}" > /dev/null || die
+		cursha=$(git rev-parse ${UPSTREAM_BRANCH})
+		echo "GIT NEW clone -->"
+		echo "   repository:               ${EGIT_REPO_URI_SELECTED}"
+		echo "   at the commit:            ${cursha}"
+
+		popd > /dev/null || die
+	elif [[ ${EVCS_OFFLINE} ]]; then
+		pushd "${EGIT_DIR}" > /dev/null || die
+		cursha=$(git rev-parse ${UPSTREAM_BRANCH})
+		echo "GIT offline update -->"
+		echo "   repository:               $(git config remote.origin.url)"
+		echo "   at the commit:            ${cursha}"
+		popd > /dev/null || die
+	else
+		pushd "${EGIT_DIR}" > /dev/null || die
+		oldsha=$(git rev-parse ${UPSTREAM_BRANCH})
+		git-2_update_repo
+		cursha=$(git rev-parse ${UPSTREAM_BRANCH})
+
+		# fetch updates
+		echo "GIT update -->"
+		echo "   repository:               ${EGIT_REPO_URI_SELECTED}"
+		# write out message based on the revisions
+		if [[ "${oldsha}" != "${cursha}" ]]; then
+			echo "   updating from commit:     ${oldsha}"
+			echo "   to commit:                ${cursha}"
+		else
+			echo "   at the commit:            ${cursha}"
+		fi
+
+		# print nice statistic of what was changed
+		git --no-pager diff --stat ${oldsha}..${UPSTREAM_BRANCH}
+		popd > /dev/null || die
+	fi
+	# export the version the repository is at
+	export EGIT_VERSION="${cursha}"
+	# log the repo state
+	[[ ${EGIT_COMMIT} != ${EGIT_BRANCH} ]] \
+		&& echo "   commit:                   ${EGIT_COMMIT}"
+	echo "   branch:                   ${EGIT_BRANCH}"
+	echo "   storage directory:        \"${EGIT_DIR}\""
+	echo "   checkout type:            ${repo_type}"
+
+	# Cleanup after git.eclass
+	if [[ ${EGIT_OLD_CLONE} ]]; then
+		einfo "${FUNCNAME}: removing old clone in ${EGIT_OLD_CLONE}."
+		rm -rf "${EGIT_OLD_CLONE}"
+	fi
+}
+
+# @FUNCTION: git_bootstrap
+# @INTERNAL
+# @DESCRIPTION:
+# Internal function that runs bootstrap command on unpacked source.
+git-2_bootstrap() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	# @ECLASS-VARIABLE: EGIT_BOOTSTRAP
+	# @DESCRIPTION:
+	# Command to be executed after checkout and clone of the specified
+	# repository.
+	# enviroment the package will fail if there is no update, thus in
+	# combination with --keep-going it would lead in not-updating
+	# pakcages that are up-to-date.
+	if [[ ${EGIT_BOOTSTRAP} ]]; then
+		pushd "${EGIT_SOURCEDIR}" > /dev/null || die
+		einfo "Starting bootstrap"
+
+		if [[ -f ${EGIT_BOOTSTRAP} ]]; then
+			# we have file in the repo which we should execute
+			debug-print "${FUNCNAME}: bootstraping with file \"${EGIT_BOOTSTRAP}\""
+
+			if [[ -x ${EGIT_BOOTSTRAP} ]]; then
+				eval "./${EGIT_BOOTSTRAP}" \
+					|| die "${FUNCNAME}: bootstrap script failed"
+			else
+				eerror "\"${EGIT_BOOTSTRAP}\" is not executable."
+				eerror "Report upstream, or bug ebuild maintainer to remove bootstrap command."
+				die "\"${EGIT_BOOTSTRAP}\" is not executable"
+			fi
+		else
+			# we execute some system command
+			debug-print "${FUNCNAME}: bootstraping with commands \"${EGIT_BOOTSTRAP}\""
+
+			eval "${EGIT_BOOTSTRAP}" \
+				|| die "${FUNCNAME}: bootstrap commands failed"
+		fi
+
+		einfo "Bootstrap finished"
+		popd > /dev/null || die
+	fi
+}
+
+# @FUNCTION: git-2_migrate_repository
+# @INTERNAL
+# @DESCRIPTION:
+# Internal function migrating between bare and normal checkout repository.
+# This is based on usage of EGIT_SUBMODULES, at least until they
+# start to work with bare checkouts sanely.
+# This function also set some global variables that differ between
+# bare and non-bare checkout.
+git-2_migrate_repository() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	local bare returnstate
+
+	# first find out if we have submodules
+	# or user explicitly wants us to use non-bare clones
+	if ! [[ ${EGIT_HAS_SUBMODULES} || ${EGIT_NONBARE} ]]; then
+		bare=1
+	fi
+
+	# test if we already have some repo and if so find out if we have
+	# to migrate the data
+	if [[ -d ${EGIT_DIR} ]]; then
+		if [[ ${bare} && -d ${EGIT_DIR}/.git ]]; then
+			debug-print "${FUNCNAME}: converting \"${EGIT_DIR}\" to bare copy"
+
+			ebegin "Converting \"${EGIT_DIR}\" from non-bare to bare copy"
+			mv "${EGIT_DIR}/.git" "${EGIT_DIR}.bare"
+			export GIT_DIR="${EGIT_DIR}.bare"
+			git config core.bare true > /dev/null
+			returnstate=$?
+			unset GIT_DIR
+			rm -rf "${EGIT_DIR}"
+			mv "${EGIT_DIR}.bare" "${EGIT_DIR}"
+			eend ${returnstate}
+		elif [[ ! ${bare} && ! -d ${EGIT_DIR}/.git ]]; then
+			debug-print "${FUNCNAME}: converting \"${EGIT_DIR}\" to non-bare copy"
+
+			ebegin "Converting \"${EGIT_DIR}\" from bare to non-bare copy"
+			git clone -l "${EGIT_DIR}" "${EGIT_DIR}.nonbare" > /dev/null
+			returnstate=$?
+			rm -rf "${EGIT_DIR}"
+			mv "${EGIT_DIR}.nonbare" "${EGIT_DIR}"
+			eend ${returnstate}
+		fi
+	fi
+	if [[ ${returnstate} -ne 0 ]]; then
+		debug-print "${FUNCNAME}: converting \"${EGIT_DIR}\" failed, removing to start from scratch"
+
+		# migration failed, remove the EGIT_DIR to play it safe
+		einfo "Migration failed, removing \"${EGIT_DIR}\" to start from scratch."
+		rm -rf "${EGIT_DIR}"
+	fi
+
+	# set various options to work with both targets
+	if [[ ${bare} ]]; then
+		debug-print "${FUNCNAME}: working in bare repository for \"${EGIT_DIR}\""
+		EGIT_LOCAL_OPTIONS+="${EGIT_OPTIONS} --bare"
+		MOVE_COMMAND="git clone -l -s -n ${EGIT_DIR// /\\ }"
+		EGIT_UPDATE_CMD="git fetch -t -f -u origin ${EGIT_BRANCH}:${EGIT_BRANCH}"
+		UPSTREAM_BRANCH="${EGIT_BRANCH}"
+		EGIT_LOCAL_NONBARE=
+	else
+		debug-print "${FUNCNAME}: working in bare repository for non-bare \"${EGIT_DIR}\""
+		MOVE_COMMAND="cp -pPR ."
+		EGIT_LOCAL_OPTIONS="${EGIT_OPTIONS}"
+		EGIT_UPDATE_CMD="git pull -f -u ${EGIT_OPTIONS}"
+		UPSTREAM_BRANCH="origin/${EGIT_BRANCH}"
+		EGIT_LOCAL_NONBARE="true"
+	fi
+}
+
+# @FUNCTION: git-2_cleanup
+# @INTERNAL
+# @DESCRIPTION:
+# Internal function cleaning up all the global variables
+# that are not required after the unpack has been done.
+git-2_cleanup() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	# Here we can unset only variables that are GLOBAL
+	# defined by the eclass, BUT NOT subject to change
+	# by user (like EGIT_PROJECT).
+	# If ebuild writer polutes his environment it is
+	# his problem only.
+	unset EGIT_DIR
+	unset MOVE_COMMAND
+	unset EGIT_LOCAL_OPTIONS
+	unset EGIT_UPDATE_CMD
+	unset UPSTREAM_BRANCH
+	unset EGIT_LOCAL_NONBARE
+}
+
+# @FUNCTION: git-2_src_unpack
+# @DESCRIPTION:
+# Default git src_unpack function.
+git-2_src_unpack() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	git-2_init_variables
+	git-2_prepare_storedir
+	git-2_migrate_repository
+	git-2_fetch "$@"
+	git-2_gc
+	git-2_submodules
+	git-2_move_source
+	git-2_branch
+	git-2_bootstrap
+	git-2_cleanup
+	echo ">>> Unpacked to ${EGIT_SOURCEDIR}"
+
+	# Users can specify some SRC_URI and we should
+	# unpack the files too.
+	if [[ ! ${EGIT_NOUNPACK} ]]; then
+		if has ${EAPI:-0} 0 1; then
+			[[ ${A} ]] && unpack ${A}
+		else
+			default_src_unpack
+		fi
+	fi
+}