[yocto] Layer input

[Rifenbark, Scott M]

For Paul.

>-----Original Message-----
>From: Paul Eggleton [mailto:paul.eggleton at linux.intel.com]
>Sent: Friday, June 28, 2013 4:08 AM
>To: Rifenbark, Scott M
>Cc: Philip Balister; yocto at yoctoproject.org
>Subject: Re: [yocto] Layer input
>
>On Friday 28 June 2013 10:50:01 Rifenbark, Scott M wrote:
>> Here is the story on the relationship between the YP Metadata Layers
>as
>> listed in the YP Source Repositories and the OpenEmbedded Metadata
>Index.
>> Functionally, the YP layers are a subset of the OE layers.  However,
>the YP
>> layers are not a true subset of the OE layers.  The YP layers have
>many
>> layers that do not appear in the OE index for one reason or another.
>
>I wouldn't say many, there are just a few exceptions. The way to look at
>it is
>the OE layer index is a central directory of layers that should be
>advertised,
>whereas what you see on git.yoctoproject.org is simply a listing of all
>of the
>repositories on git.yoctoproject.org, of which a subset are layers and a
>subset of those are current, maintained and should be promoted for
>people to
>use (and all of the latter should be in the OE layer index).

I count eight meta-* layers in the YP repositories that don't exist in the OE area.  I understand what you are saying though and I can word it that way to dampen the existence of the "many" differences :)

>
>> Some YP layers are deprecated (e.g. meta-dlna), some should not be
>there and
>> are being actively worked for removal or movement (e.g. poky-extras
>and
>> yocto-docs).  Some are experimental layers (e.g. any layer that starts
>with
>> "experimental"). And one is a contribution layer used by the Yocto
>Team
>> (e.g. meta-intel-contrib).
>
>FWIW, like the other contrib repos I think the latter is open access,
>anyone
>can get commit rights to facilitate sending pull requests.

I can explain the contrib areas as you suggest.

>
>> The text I create supporting this "layer" figure will describe this
>> relationship so people will know from where existing layers originate.
>>
>> I am deciding against adding more boxes to the already large figure
>and am
>> going to retain just the large "Layers" box.  It will have supporting
>text
>> that describes how a layer could be user-created, could originate from
>the
>> YP Metadata Layers list, or could originate from the OpenEmbedded
>Metadata
>> Index of layers.
>
>Looking over the most recent version of this figure I'd suggest:
>
>* conf/bblayers.conf in the distro layer shouldn't be there.

Ok - I removed this.

>
>* The recipes-kernel in the distro layer should be dropped. I know we
>include
>linux-libc-headers-yocto in Poky but that is not typical.

Ok - I removed it.

>
>* I think maybe like the other diagrams it would help if there were a
>different
>emphasis for items that are mandatory and items that are optional (e.g.
>bolding mandatory items or greying out optional items).

I don't know what is mandatory and what is not.  Can you provide some guidance here? Thanks.

>
>* Replace <mod_name> with <recipe>
>
>* Replace <machine*> with <machine>

Ok - I fixed the above two items.

>
>Cheers,
>Paul
>
>
>
>--
>
>Paul Eggleton
>Intel Open Source Technology Centre
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