[yocto] How to interpret the "Recipes reporting system" (e.g. for Python3 3.4, 3.5, 3.6)

[Anibal Limon]

On 03/23/2017 02:52 PM, Paul Eggleton wrote:
> Hi Alain,
> 
> On Friday, 24 March 2017 4:50:39 AM NZDT Alain Achkar wrote:
>> Is there any brief README or documentation about the "Recipe reporting
>> system" ?
>>
>> For example: http://recipes.yoctoproject.org/rrs/recipedetail/297/
>>
>> Is it automatically generated or manually maintained? (If you look at the
>> field Source URI, it points to Python-3.4.3.tar.xz but the Recipe file
>> points to python3_3.5.3.bb which contains:
>>
>> SRC_URI = "http://www.python.org/ftp/python/${PV}/Python-${PV}.tar.xz \
> 
> Something is wrong there - the SRC_URI field must not be being updated. For 
> the most part the RRS is automatically populated. Anibal, any ideas?

There is a known issue in updating the SRC_URI [1], i guess there is
something wrong in the layerindex_update.py script may be we need to
make a full reload of the recipe database records..

I didn't have time to look into the bug but is targeted to fix pior 2.4
release.

	Anibal

[1] https://bugzilla.yoctoproject.org/show_bug.cgi?id=10899

> 
>> I am trying to understand how/if I can use it. For example, if I am using
>> Jethro and I want Python 3.5 or 3.6, how can I use the "Recipe reporting
>> system" to achieve this? (I don't want to upgrade to Krogoth or Morty)
>>
>> In Jethro, I have:
>>
>>
>> *poky/meta/recipes-devtools/python/python3_3.4.3.bb
>> <http://python3_3.4.3.bb>*
>>
>> which of course builds Python 3.4
>>
>> I know that if I download Morty, I get:
>>
>> *poky/meta/recipes-devtools/python/python3_3.5.2.bb
>> <http://python3_3.5.2.bb>*
>>
>> so, I tried copying this recipe into my Jethro source tree (at the same
>> location) but I got too many errors (I think there are several patches that
>> are needed).
> 
> Backporting will require changes, definitely. You'll have to work through them 
> - you may be able to use the migration information in the reference manual (in 
> reverse, of course) to provide hints - the 2.2 (morty) and 2.1 (krogoth) 
> sections would be appropriate for your situation:
> 
> http://www.yoctoproject.org/docs/current/ref-manual/ref-manual.html#migration
> 
> You may also find the git history for the recipes in question to be 
> instructive in terms of what changes were made to bring them to their current 
> state in master.
> 
>> So, is it possible to use the "Recipe reporting system" to see changes in
>> another branch and bring them in to my branch?
> 
> You'd do that by checking out the branch in git and copying the entire 
> directory, the RRS is just a reporting tool.
> 
>> Moreover, if Python 3.6 is not available in Morty, how can I make a recipe
>> for it?
> 
> Since 3.6 isn't in master, there aren't any shortcuts I'm afraid, you would 
> have to try manually updating it - probably the safest thing to do would be to 
> copy the existing directory into your own custom layer and modify it there. I 
> suspect starting at 3.5.2 is going to be fastest, but of course you'll need to 
> backport that to jethro first.
> 
> Cheers,
> Paul
> 

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