Re: [gentoo-user] "X11 forwarding" so to say ... but for audio

[Fernando Rodriguez <cyklonite@gmail.com>]

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On 07/19/2016 08:17 AM, Neil Bothwick wrote:
> On Tue, 19 Jul 2016 07:21:33 -0400, Fernando Rodriguez wrote:
> 
>>>>   The following REQUIRED_USE flag constraints are unsatisfied:
>>>>     client? ( x264? ( dec_av2 ) x265? ( dec_av2 ) )  
>>>
>>> It means that if you have client you need x264 and x265 and those both
>>> require dec_av2, which is the one you don't have set.
>>>
>>>   
>>
>> I thought it meant that if you have client AND (x264 OR x265) then you
>> need dec_av2. client doesn't require x264 or x265 by itself.
> 
> Doesn't that use || ? Anyway, he has client and x264, so dec_av2 is
> needed.
> 

No, || means "any of", see [1]. And I believe in that case portage will translate
it to "any-of" or something like that. These are just nested conditionals. It can
be confusing even for someone with programming background. I suppose portage
could translate that into a more human friendly form but with many nesting levels
it will get ugly any way you put it.

And yes, dec_av2 is what he needs (unless he doesn't need x264 and x265 support).
I was just clearing the point about the meaning of the message.

[1] https://devmanual.gentoo.org/general-concepts/dependencies/

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