[oe] Regarding layers and their versioning.

[Martin Jansa]

On Mon, Oct 21, 2013 at 09:29:27AM +0100, Anders Darander wrote:
> 
> 
> "Søren Holm" <sgh at sgh.dk> wrote:
> >Hello
> >
> >What is the best way to manage a private repo with recipes as well as
> >meta-oe, 
> >meta-core and meta-angstrom.
> 
> >Currently I have a private repo that has the layers attached as
> >submodules. Is 
> >that a crazy setup or what?
> 
> We're doing the same internally at ChargeStorm. One benefit is that we're having our "master" repo keeping track of all the layers that we're using and which revision of those layers. 
> 
> Other people / projects just use a shell script checking out the desired layers. Some people combines layers into one huge repo (though I'd personally not recommend that approach). (That'd be similar to how Poky is being managed). 
> 
> Yet other people / projects use repo. 
> 
> It's up to what you're comfortable with in the end. 

I was using Makefile to checkout correct set of layers with correct
revisions for SHR before and then changed it to use layerman script
very similar to script used in angstrom-setup-scripts, because
layers.txt is more "declarative" and easier to update than what I had
in Makefile.

For webos-ports project I use the same.

For webos we recently switched from repo with submodules to repository
with similar script (mcf - this time in python). Mostly because repos
with submodules don't work well when replicating from gerrit to github.

I think that biggest advantage of solution with some script, is that
layers are still standalone checkouts, which developers can use as any
other project (easier to submit patches upstream etc).

And the script
can be more clever than git pull --rebase in repo with submodules, e.g.
for jenkins builds I want to automatically update build configuration in
non-interactive way (because jenkins shouldn't ever keep some local
changes), but for local build I want to preserve developer's local.conf
changes and e.g. extra layers added in bblayers.conf etc.

-- 
Martin 'JaMa' Jansa     jabber: Martin.Jansa at gmail.com
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