Gentoo Archives: gentoo-dev

From: "Michał Górny" <mgorny@g.o>
To: gentoo-dev@l.g.o
Subject: Re: [gentoo-dev] [PATCH 1/3] go-module.eclass: introduce new eclass to handle go modules
Date: Wed, 11 Sep 2019 18:31:27
Message-Id: d24cb3f8c03aed768f7205e5d7648ffc89862977.camel@gentoo.org
In Reply to: Re: [gentoo-dev] [PATCH 1/3] go-module.eclass: introduce new eclass to handle go modules by William Hubbs
On Wed, 2019-09-11 at 13:22 -0500, William Hubbs wrote:
> On Wed, Sep 11, 2019 at 07:38:17PM +0200, Michał Górny wrote: > > On Wed, 2019-09-11 at 12:21 -0500, William Hubbs wrote: > > > Copyright: Sony Interactive Entertainment Inc. > > > Signed-off-by: William Hubbs <williamh@g.o> > > > --- > > > eclass/go-module.eclass | 76 +++++++++++++++++++++++++++++++++++++++++ > > > 1 file changed, 76 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..7009fcd3beb > > > --- /dev/null > > > +++ b/eclass/go-module.eclass > > > @@ -0,0 +1,76 @@ > > > +# Copyright 1999-2015 Gentoo Foundation > > > > You need to replace your calendar. And copyright holder. > > Sure, I thought I ffixed that. > > > > +# Distributed under the terms of the GNU General Public License v2 > > > + > > > +# @ECLASS: go-module.eclass > > > > Any reason to change naming from golang-* to go-* now? > > Well, "lang" is sort of redundant, and there will be only one eclass, so > I thought I would make things a bit more simple. > > > > +# @MAINTAINER: > > > +# William Hubbs <williamh@g.o> > > > +# @SUPPORTED_EAPIS: 7 > > > +# @BLURB: basic eclass for building software written in the go > > > +# programming language that uses go modules. > > > +# @DESCRIPTION: > > > +# This eclass provides a convenience src_prepare() phase and some basic > > > +# settings needed for 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 the software you are packaging uses modules, the next question is > > > +# whether it has a directory named "vendor" at the top-level of the source tree. > > > +# > > > +# If it doesn't, you need to create a tarball of what would be in the > > > +# vendor directory and mirror it locally. This is done with the > > > +# following commands if upstream is using a git repository: > > > +# > > > +# @CODE: > > > +# > > > +# $ cd /my/clone/of/upstream > > > +# $ git checkout <release> > > > +# $ go mod vendor > > > +# $ tar cvf project-version-vendor.tar.gz vendor > > > +# > > > +# @CODE: > > > +# > > > +# Other than this, all you need to do is inherit this eclass then > > > +# make sure the exported src_prepare function is run. > > > + > > > +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" > > > + > > > +# Do not download dependencies from the internet > > > +# make build output verbose by default > > > +export GOFLAGS="-mod=vendor -v -x" > > > + > > > +# Do not complain about CFLAGS etc since go projects do not use them. > > > +QA_FLAGS_IGNORED='.*' > > > + > > > +# Upstream does not support stripping go packages > > > +RESTRICT="strip" > > > + > > > +EXPORT_FUNCTIONS src_prepare > > > > Don't you need to inherit some other eclass to make it build? > > The primary reason for all of the golang-* eclasses was the GOPATH > variable, which is not relevant when you are using modules. > > I can look at adding a src_compile to this eclass, but I haven't thought > about what it would contain yet. > > > > + > > > +# @FUNCTION: go-module_src_prepare > > > +# @DESCRIPTION: > > > +# Run a default src_prepare then move our provided vendor directory to > > > +# the appropriate spot if upstream doesn't provide a vendor directory. > > > +go-module_src_prepare() { > > > + default > > > + # Use the upstream provided vendor directory if it exists. > > > + [[ -d vendor ]] && return > > > + # If we are not providing a mirror of a vendor directory we created > > > + # manually, return since there may be nothing to vendor. > > > + [[ ! -d ../vendor ]] && return > > > + # At this point, we know we are providing a vendor mirror. > > > + mv ../vendor . || die "Unable to move ../vendor directory" > > > > Wouldn't it be much simpler to create appropriate directory structure > > in the tarball? Then you wouldn't need a new eclass at all. > > You would definitely need an eclass (see the settings and dependencies). > > Take a look at the differences in the spire and hub ebuilds in this > series. I'm not sure what you mean by adding the directory structure to > the tarball? I guess you could add something to the vendor tarball when > you create it.
I mean packing it as 'spire-1.2.3/vendor' or whatever the package directory is, so that it extracts correctly instead of making a tarball that needs to be moved afterwards.
> > What I tried to avoid was stomping on the vendor directory if it is > included upstream.
You do that anyway by moving files.
> > William > > > +} > > > + > > > +fi > > > > -- > > Best regards, > > Michał Górny > > > >
-- Best regards, Michał Górny

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