[maemo-developers] Dealing with fcam-drivers and different kernels

[From: Attila Csipa]

On Monday 02 August 2010 20:38:11 Eino-Ville Talvala wrote:
> With the idea that fcam-drivers is preferred since it's a real package,
> and fcam-power-drivers only used in case fcam-drivers conflicts?
>
> Any advice would be appreciated!

Off the top of my head, I would do something like:

 fcam-stock-drivers:
   Provides: fcam-drivers
   Conflicts: kernel-power, fcam-drivers
   Replaces: fcam-drivers

 fcam-power-drivers:
   Provides: fcam-drivers
   Depends: kernel-power (= exact-version)
   Conflicts: fcam-drivers
   Replaces: fcam-drivers

 Then FCam applications would use:
    Depends: fcam-drivers

In plain English - make fcam-drivers a virtual package and indicate with 
"Replaces:" what package needs to be considered for removal in case of a 
conflict. Why depend on the flasher ? You can have kernel-power without the 
flasher. I think it is wrong (but probably safer) that kernel-power does not 
conflict with kernel. Also, I would be adding some versioning to the kernels as 
doing modules without depending on EXACT versions of kernels is just asking 
for trouble (for stock you can count it to be stable between PRs, but kernel-
power can change fairly often, with no guarantee of compatibility).

And last but least - if you can get the maintainer of kernel-power to include 
your modules, that would be the simplest solution of them all, then you would 
have fcam-drivers as is, but kernel-power would have to incorporate:

  Provides: fcam-drivers
  Replaces: fcam-drivers
  Conflicts: fcam-drivers

Best regards,
Attila