[gentoo-dev] [PATCH 1/2] go-module.eclass: new eclass for go modules

[William Hubbs <williamh@gentoo.org>]

This eclass includes the basic settings and a pkg_postinst function for
go modules.

Signed-off-by: William Hubbs <williamh@gentoo.org>
---
 eclass/go-module.eclass | 79 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 79 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..0c2e072bd78
--- /dev/null
+++ b/eclass/go-module.eclass
@@ -0,0 +1,79 @@
+# Copyright 2019 gentoo authors
+# Distributed under the terms of the GNU General Public License v2
+
+# @ECLASS: go-module.eclass
+# @MAINTAINER:
+# William Hubbs <williamh@gentoo.org>
+# @SUPPORTED_EAPIS: 7
+# @BLURB: basic eclass for building software written in the go
+# programming language that uses go modules.
+# @DESCRIPTION:
+# This eclass provides some basic settings and a pkg_postinst function
+# 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 two files and a directory named vendor at the top
+# level, your ebuild should inherit this eclass since upstream is vendoring
+# their dependencies. If it does not have a vendor directory, your ebuild
+# should inherit the go-module-vendor eclass.
+#
+# 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
+#
+# @CODE
+
+case ${EAPI:-0} in
+	7) ;;
+	*) die "${ECLASS} API in EAPI ${EAPI} not yet established."
+esac
+
+if [[ -z ${_GO_MODULE} ]]; then
+
+_GO_MODULE_=1
+
+BDEPEND=">=dev-lang/go-1.12"
+
+# Force go to build in module mode.
+# In this mode the GOPATH environment variable is ignored.
+# this will become the default in the future.
+export GO111MODULE=on
+
+# The following go flags should be used for all builds.
+# -mod=vendor stopps downloading of dependencies from the internet.
+# -v prints the names of packages as they are compiled
+# -x prints commands as they are executed
+export GOFLAGS="-mod=vendor -v -x"
+
+# Do not complain about CFLAGS etc since go projects do not use them.
+QA_FLAGS_IGNORED='.*'
+
+# Go packages should not be stripped with strip(1).
+RESTRICT="strip"
+
+EXPORT_FUNCTIONS pkg_postinst
+
+# @FUNCTION: go-module_pkg_postinst
+# @DESCRIPTION:
+# Display a warning about security updates for Go programs.
+go-module_pkg_postinst() {
+	ewarn "${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