Re: [LAU] Dell 1394 4 pin connector

On 31 December 2010 13:44, Ken Restivo <ken@email-addr-hidden> wrote:
> On Thu, Dec 30, 2010 at 03:21:44PM -0800, Kim Cascone wrote:
>> On 12/30/2010 12:57 PM, Paul Davis wrote:
>>> On Thu, Dec 30, 2010 at 2:33 PM, Kim Cascone<kim@email-addr-hidden>  wrote:
>>>
>>>> and I don't want to upgrade to Jack2 since Synaptic wants to wipe all my
>>>> audio apps with the install
>>>> not sure why this is unless none of the apps support Jack2 in which case
>>>> I'll pass on installing it
>>> apps do not support jack1 or jack2. they support jack. packaging that
>>> makes a jack client depend on specifically jack2 or jack1 is
>>> erroneous.
>>>
>> I see -- but why would installing Jack2 uninstall all my audio apps?
>> anyone hazard a guess?
>>
>
> Because your audio apps depend on JACK being present. No JACK, no audio apps, away they go.
>
> It's been a while since I dealt with packaging, but IIRC the correct way to do this is to have the JACK package and the JACK2 (jackdmp 1.92) package be "alternatives" to each other.
>
> This is, for example, how you can switch your MTA from Sendmail (eek!) to Postfix to ssmtp to whatever, without everything that depends on it being nuked.
>
> You might want to file a bug with Ubuntu. They dropped the ball on this one.

The proper way is for both to provide a 'jack', which would be a
virtual package. Your apps should stay content as long as the 'jackd'
binary exists, i.e they should never explicitly depend on a 'jack1' or
a 'jack2'.

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