RFC: Putting a "compatible" flag into the Control file and using it

Tick Chen tick at openmoko.com
Thu Aug 7 09:29:26 CEST 2008

Hi Holger, 
  I think it's a very good idea. It will solve a lot of problems for many

If we want to add this feature, I want to raise some questions first. 

Do you have any idea that if we think distribution A can upgrade to B
but cannot updrade to C.  How do we control this stuff. 

Should this information put into Package file or .ipk/.opk file?
What if a repository does not provide any distribution info?
What if a ipk file is suit for multiple distributions?


On Sun, Aug 03, 2008 at 01:11:27PM +0200, Holger Freyther wrote:
> Hey Tick, Rob,
> I see constant breakage with people attempting an upgrade from 
> org.openmoko.dev to org.openmoko.asu.stable. While such an upgrade might 
> work, it might completely fail and break things. In my Opie past I even saw 
> people "upgrading" to an eight year old Qtopia snapshot and messing up their 
> system badly.
> I would propose the following and then do the patches:
> 	- Add "Compatible-Distribution" to the Control file and Packages index
> 	- Opkg gets an option for compatible distributions in "opkg.conf"
> 	- Opkg will only see packages from compatible distributions (on update)
> 	- Opkg will only install packages from compatible distributions
> 	- Opkg will ignore both on -force-any-distribution
> 	- Make the compatible distribution default
> Reasoning:
> 	I have seen a lot of breakage with such "upgrades" and even if it is obvious 
> for us that this feed should not be used or might not be compatible, for many 
> non developers they look perfectly fine. People knowing that asu.stable is 
> compatible with a certain version of Poky or Angstrom, or want to install a 
> debian package can use the -force-any-distribution to get their packages 
> installed.
> comments?
> z.
> _______________________________________________
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> opkg-devel at lists.openmoko.org
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