This eclass is meant to handle vcs snapshots of golang packages coming from services like github.
Let me know what you think. William
# Copyright 1999-2013 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $
# @ECLASS: golang-vcs-snapshot.eclass
# @MAINTAINER:
# William Hubbs <willi...@gentoo.org>
# @BLURB: support eclass for unpacking VCS snapshot tarballs for
# software written in the Go programming language
# @DESCRIPTION:
# This eclass provides a convenience src_unpack() which unpacks the
# first tarball mentioned in SRC_URI to its appropriate location in
# ${S}, treating ${S} as a go workspace.
#
# The location where the tarball is extracted is defined as
# ${S}/src/${EGO_PN}.
#
# The typical use case is VCS snapshots coming from github, bitbucket
# and similar services. They have a commit hash appended to the directory name
# which makes extracting them a painful experience. But if you use a
# SRC_URI arrow to rename it (which you're likely have to do anyway),
# vcs-snapshot will just extract it into a matching directory.
#
# Please note that this eclass currently handles only tarballs
# (.tar.gz), but support for more formats may be added in the future.
#
# @EXAMPLE:
#
# @CODE
# EGO_PN=github.com/user/package
# inherit golang-vcs-snapshot
#
# SRC_URI="http://github.com/example/${PN}/tarball/v${PV} -> ${P}.tar.gz"
# @CODE
inherit golang-base
case ${EAPI:-0} in
5) ;;
*) die "${ECLASS} API in EAPI ${EAPI} not yet established."
esac
EXPORT_FUNCTIONS src_unpack
# @FUNCTION: golang-vcs-snapshot_src_unpack
# @DESCRIPTION:
# Extract the first archive from ${A} to the appropriate location for GOPATH.
golang-vcs-snapshot_src_unpack() {
local f destdir="${WORKDIR}/${P}" x
ego_pn_check
set -- ${A}
x="$1"
mkdir -p "${destdir}/src/${EGO_PN%/*}"
tar -C "${destdir}/src/${EGO_PN%/*}" -x --strip-components 1 \
-f "${DISTDIR}/${x}" || die
}
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