From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by finch.gentoo.org (Postfix) with ESMTPS id AD280138334 for ; Thu, 26 Sep 2019 00:26:06 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 8D163E0933; Thu, 26 Sep 2019 00:26:03 +0000 (UTC) Received: from smtp.gentoo.org (smtp.gentoo.org [140.211.166.183]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id 0978FE08FF for ; Thu, 26 Sep 2019 00:26:03 +0000 (UTC) Received: from whubbs1.gaikai.biz (unknown [100.42.103.5]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: williamh) by smtp.gentoo.org (Postfix) with ESMTPSA id 9131A34B59E; Thu, 26 Sep 2019 00:25:59 +0000 (UTC) Received: (nullmailer pid 5169 invoked by uid 1000); Thu, 26 Sep 2019 00:25:15 -0000 From: William Hubbs To: gentoo-dev@lists.gentoo.org Cc: William Hubbs Subject: [gentoo-dev] [PATCH v2 1/1] go-module.eclass: new eclass for go modules Date: Wed, 25 Sep 2019 19:24:43 -0500 Message-Id: <20190926002443.5117-2-williamh@gentoo.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190926002443.5117-1-williamh@gentoo.org> References: <20190926002443.5117-1-williamh@gentoo.org> Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-dev@lists.gentoo.org Reply-to: gentoo-dev@lists.gentoo.org X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Archives-Salt: a722a1ab-59ca-4a4d-a683-e928ded75d76 X-Archives-Hash: 6e489696479856a1cd31dc7119e826d8 This eclass includes the basic settings and src_unpack/pkg_postinst functions for Go modules. Signed-off-by: William Hubbs --- eclass/go-module.eclass | 176 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 176 insertions(+) create mode 100644 eclass/go-module.eclass diff --git a/eclass/go-module.eclass b/eclass/go-module.eclass new file mode 100644 index 00000000000..f920457f3ab --- /dev/null +++ b/eclass/go-module.eclass @@ -0,0 +1,176 @@ +# Copyright 2019 Gentoo authors +# Distributed under the terms of the GNU General Public License v2 + +# @ECLASS: go-module.eclass +# @MAINTAINER: +# William Hubbs +# @SUPPORTED_EAPIS: 7 +# @BLURB: basic eclass for building software written as go modules +# @DESCRIPTION: +# This eclass provides basic settings and functions +# needed by all software written in the go programming language that uses +# go modules. +# +# You will know the software you are packaging uses modules because +# it will have files named go.sum and go.mod in its top-level source +# directory. If it does not have these files, use the golang-* eclasses. +# +# If it has these files and a directory named vendor in its top-level +# source directory, you only need to inherit the eclass since upstream +# is vendoring the dependencies. +# +# If it does not have a vendor directory, you should use the EGO_VENDOR +# variable and the go-module_vendor_uris function as shown in the +# example below to handle dependencies. +# +# Since Go programs are statically linked, it is important that your ebuild's +# LICENSE= setting includes the licenses of all statically linked +# dependencies. So please make sure it is accurate. +# +# @EXAMPLE: +# +# @CODE +# +# inherit go-module +# +# EGO_VENDOR=( +# "github.com/xenolf/lego 6cac0ea7d8b28c889f709ec7fa92e92b82f490dd" +# "golang.org/x/crypto 453249f01cfeb54c3d549ddb75ff152ca243f9d8 github.com/golang/crypto" +# ) +# +# SRC_URI="https://github.com/example/${PN}/archive/v${PV}.tar.gz -> ${P}.tar.gz +# $(go-module_vendor_uris)" +# +# @CODE + +case ${EAPI:-0} in + 7) ;; + *) die "${ECLASS} API in EAPI ${EAPI} not yet established." +esac + +if [[ -z ${_GO_MODULE} ]]; then + +_GO_MODULE=1 + +BDEPEND=">=dev-lang/go-1.12" + +# Force go to build in module mode. +# In this mode the GOPATH environment variable is ignored. +# this will become the default in the future. +export GO111MODULE=on + +# The following go flags should be used for all builds. +# -mod=vendor stopps downloading of dependencies from the internet. +# -v prints the names of packages as they are compiled +# -x prints commands as they are executed +export GOFLAGS="-mod=vendor -v -x" + +# Do not complain about CFLAGS etc since go projects do not use them. +QA_FLAGS_IGNORED='.*' + +# Go packages should not be stripped with strip(1). +RESTRICT="strip" + +EXPORT_FUNCTIONS src_unpack pkg_postinst + +# @ECLASS-VARIABLE: EGO_VENDOR +# @DESCRIPTION: +# This variable contains a list of vendored packages. +# The items of this array are strings that contain the +# import path and the git commit hash for a vendored package. +# If the import path does not start with github.com, the third argument +# can be used to point to a github repository. + +# @FUNCTION: go-module_vendor_uris +# @DESCRIPTION: +# Convert the information in EGO_VENDOR to a format suitable for +# SRC_URI. +# A call to this function should be added to SRC_URI in your ebuild if +# the upstream package does not include vendored dependencies. +go-module_vendor_uris() { + local hash import line repo _ + for line in "${EGO_VENDOR[@]}"; do + read -r import hash repo _ <<< "${line}" + if [[ "$_" ]]; then + eerror "Trailing information in EGO_VENDOR in ${P}.ebuild" + eerror "${line}" + die "Invalid EGO_VENDOR format" + fi + : "${repo:=${import}}" + echo "https://${repo}/archive/${hash}.tar.gz -> ${repo//\//-}-${hash}.tar.gz" + done +} + +# @FUNCTION: go-module_src_unpack +# @DESCRIPTION: +# Extract all archives in ${a} which are not nentioned in ${EGO_VENDOR} +# to their usual locations then extract all archives mentioned in +# ${EGO_VENDOR} to ${S}/vendor. +go-module_src_unpack() { + debug-print-function ${FUNCNAME} "$@" + local f hash import line repo tarball vendor_tarballs _ + vendor_tarballs= + for line in "${EGO_VENDOR[@]}"; do + read -r import hash repo _ <<< "${line}" + if [[ "$_" ]]; then + eerror "Trailing information in EGO_VENDOR in ${P}.ebuild" + eerror "${line}" + die "Invalid EGO_VENDOR format" + fi + : "${repo:=${import}}" + tarball=${repo//\//-}-${hash}.tar.gz + vendor_tarballs+=" ${tarball}" + done + for f in $A; do + [[ -n "${vendor_tarballs}" ]] && has $f $vendor_tarballs && continue + unpack $f + done + + [[ -z "${vendor_tarballs}" ]] && return + ebegin "Vendoring dependencies" + for line in "${EGO_VENDOR[@]}"; do + read -r import hash repo _ <<< "${line}" + : "${repo:=${import}}" + tarball=${repo//\//-}-${hash}.tar.gz + einfo "Vendoring ${import} ${tarball}" + rm -fr "${S}/vendor/${import}" || die + mkdir -p "${S}/vendor/${import}" || die + tar -C "${S}/vendor/${import}" -x --strip-components 1 \ + -f "${DISTDIR}/${tarball}" || die + done + eend +} + +# @FUNCTION: go-module_live_vendor +# @DESCRIPTION: +# This function is used in live ebuilds to vendor the dependencies when +# upstream doesn't vendor them. +go-module_live_vendor() { + debug-print-function ${FUNCNAME} "$@" + + has live ${PROPERTIES} || + die "${FUNCNAME} only allowed in live ebuilds" + [[ "${EBUILD_PHASE}" == unpack ]] || + die "${FUNCNAME} only allowed in src_unpack" + [[ -d "${S}"/vendor ]] || + die "${FUNCNAME} only allowed when upstream isn't vendoring" + + cd "${S}" || die + go mod vendor || die +} + +# @FUNCTION: go-module_pkg_postinst +# @DESCRIPTION: +# Display a warning about security updates for Go programs. +go-module_pkg_postinst() { + debug-print-function ${FUNCNAME} "$@" + ewarn "${PN} is written in the Go programming language." + ewarn "Since this language is statically linked, security" + ewarn "updates will be handled in individual packages and will be" + ewarn "difficult for us to track as a distribution." + ewarn "For this reason, please update any go packages asap when new" + ewarn "versions enter the tree or go stable if you are running the" + ewarn "stable tree." +} + +fi -- 2.21.0