prebuilt pacakages

prebuilt pacakages

[Todd Cooper]

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Is there any way to make Yocto try to get prebuilt packages from known repositories rather than trying to rebuild the world?

-Todd

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Re: prebuilt pacakages

[Richard Purdie]

On Thu, 2011-08-04 at 07:42 -0700, Todd Cooper wrote:
> Is there any way to make Yocto try to get prebuilt packages from known
> repositories rather than trying to rebuild the world?

The system supports a cache of prebuilt objects in the form of the
sstate data to accelerate build times if nothing changes. It doesn't
directly support using prebuilt packages directly though as its a much
harder problem to solve than you first realise.

A an example, given a package feed, its very hard to work out library
provision within that package feed or dependency naming.

Cheers,

Richard

Re: prebuilt pacakages

[Todd Cooper]

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Would this be worth putting on the list of items wished for in the future?  

It sounds like the problem is difficult, but not impossible.




>________________________________
>From: Richard Purdie <richard.purdie@linuxfoundation.org>
>To: Todd Cooper <todd_cooper@yahoo.com>
>Cc: "yocto@yoctoproject.org" <yocto@yoctoproject.org>
>Sent: Thursday, August 4, 2011 10:59 AM
>Subject: Re: [yocto] prebuilt pacakages
>
>On Thu, 2011-08-04 at 07:42 -0700, Todd Cooper wrote:
>> Is there any way to make Yocto try to get prebuilt packages from known
>> repositories rather than trying to rebuild the world?
>
>The system supports a cache of prebuilt objects in the form of the
>sstate data to accelerate build times if nothing changes. It doesn't
>directly support using prebuilt packages directly though as its a much
>harder problem to solve than you first realise.
>
>A an example, given a package feed, its very hard to work out library
>provision within that package feed or dependency naming.
>
>Cheers,
>
>Richard
>
>
>
>
>
>
>

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Re: prebuilt pacakages

[Richard Purdie]

On Thu, 2011-08-04 at 10:50 -0700, Todd Cooper wrote:
> Would this be worth putting on the list of items wished for in the
> future?  
> 
> It sounds like the problem is difficult, but not impossible.

Most things are possible :).

The implementation isn't hard, maintaining some kind of translation
table for the dependencies, shared library provision lists and so on is
a *lot* of work though.

It would really take someone with a specific use case to step forward
along with manpower for it to have a chance of happening. Even then it
would work for a specific set of packages and wouldn't translate to any
other package feed.

Cheers,

Richard

> 
>         
>         ______________________________________________________________
>         From: Richard Purdie <richard.purdie@linuxfoundation.org>
>         To: Todd Cooper <todd_cooper@yahoo.com>
>         Cc: "yocto@yoctoproject.org" <yocto@yoctoproject.org>
>         Sent: Thursday, August 4, 2011 10:59 AM
>         Subject: Re: [yocto] prebuilt pacakages
>         
>         On Thu, 2011-08-04 at 07:42 -0700, Todd Cooper wrote:
>         > Is there any way to make Yocto try to get prebuilt packages
>         from known
>         > repositories rather than trying to rebuild the world?
>         
>         The system supports a cache of prebuilt objects in the form of
>         the
>         sstate data to accelerate build times if nothing changes. It
>         doesn't
>         directly support using prebuilt packages directly though as
>         its a much
>         harder problem to solve than you first realise.
>         
>         A an example, given a package feed, its very hard to work out
>         library
>         provision within that package feed or dependency naming.
>         
>         Cheers,
>         
>         Richard
>         
>         
>         
>         
>         
>         
>         

> 

Re: prebuilt pacakages

[Todd Cooper]

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Can I suggest that Yocto put it on the futures list, but with a lower priority?




>________________________________
>From: Richard Purdie <richard.purdie@linuxfoundation.org>
>To: Todd Cooper <todd_cooper@yahoo.com>
>Cc: "yocto@yoctoproject.org" <yocto@yoctoproject.org>
>Sent: Thursday, August 4, 2011 6:43 PM
>Subject: Re: [yocto] prebuilt pacakages
>
>On Thu, 2011-08-04 at 10:50 -0700, Todd Cooper wrote:
>> Would this be worth putting on the list of items wished for in the
>> future?  
>> 
>> It sounds like the problem is difficult, but not impossible.
>
>Most things are possible :).
>
>The implementation isn't hard, maintaining some kind of translation
>table for the dependencies, shared library provision lists and so on is
>a *lot* of work though.
>
>It would really take someone with a specific use case to step forward
>along with manpower for it to have a chance of happening. Even then it
>would work for a specific set of packages and wouldn't translate to any
>other package feed.
>
>Cheers,
>
>Richard
>
>> 
>>        
>>         ______________________________________________________________
>>         From: Richard Purdie <richard.purdie@linuxfoundation.org>
>>         To: Todd Cooper <todd_cooper@yahoo.com>
>>         Cc: "yocto@yoctoproject.org" <yocto@yoctoproject.org>
>>         Sent: Thursday, August 4, 2011 10:59 AM
>>         Subject: Re: [yocto] prebuilt pacakages
>>        
>>         On Thu, 2011-08-04 at 07:42 -0700, Todd Cooper wrote:
>>         > Is there any way to make Yocto try to get prebuilt packages
>>         from known
>>         > repositories rather than trying to rebuild the world?
>>        
>>         The system supports a cache of prebuilt objects in the form of
>>         the
>>         sstate data to accelerate build times if nothing changes. It
>>         doesn't
>>         directly support using prebuilt packages directly though as
>>         its a much
>>         harder problem to solve than you first realise.
>>        
>>         A an example, given a package feed, its very hard to work out
>>         library
>>         provision within that package feed or dependency naming.
>>        
>>         Cheers,
>>        
>>         Richard
>>        
>>        
>>        
>>        
>>        
>>        
>>        
>
>> 
>
>
>
>
>

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Re: prebuilt pacakages

[Richard Purdie]

On Thu, 2011-08-04 at 18:37 -0700, Todd Cooper wrote:
> Can I suggest that Yocto put it on the futures list, but with a lower
> priority?

You can add it to the list on the wiki.

Which known set of prebuilt packages are you thinking we should be able
to build against?

Cheers,

Richard

Re: prebuilt pacakages

[Ourada, Paul]

I'm no expert, but would the use of something like Puppet make this job a lot easier? A consultant is suggesting that we consider that tool for this purpose. Define a particular set of packages in Puppet, and you can play around in your sandbox to your heart's content. When you want to get back to a particular configuration, let Puppet do that for you. It may be a little heavyweight for some projects, but I'd think that any project which needs stricter control could use this.

http://www.puppetlabs.com

Paul E. Ourada
Sr. Principal Software Engineer
Covidien, Energy-based Devices
5920 Longbow Drive
Boulder, CO 80301
paul.ourada@covidien.com
www.covidien.com
Main: 303-530-2300
Ofc: 303-581-6940
Fax: 303-581-6741

-----Original Message-----
From: yocto-bounces@yoctoproject.org [mailto:yocto-bounces@yoctoproject.org] On Behalf Of Richard Purdie
Sent: Friday, August 05, 2011 2:13 AM
To: Todd Cooper
Cc: "yocto@yoctoproject.org"
Subject: Re: [yocto] prebuilt pacakages

On Thu, 2011-08-04 at 18:37 -0700, Todd Cooper wrote:
> Can I suggest that Yocto put it on the futures list, but with a lower
> priority?

You can add it to the list on the wiki.

Which known set of prebuilt packages are you thinking we should be able
to build against?

Cheers,

Richard




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