[SCM] jnoise/master: Add JACK-session support.

[Jonas Smedegaard]

On Wed, Jan 19, 2011 at 01:18:47AM +0100, Alessio Treglia wrote:
>something goes wrong:

> -> Considering build-dep libjack-dev-session
>   -> Trying to add libjack-dev-session
>   -> Loop detected, last APT error was: ======
>Reading package lists...
>Building dependency tree...
>Reading state information...
>Package libjack-dev-session is a virtual package provided by:
>E: Package 'libjack-dev-session' has no installation candidate
>   -> =========================================
>   -> (not adding  to libjack-dev-session)
>       -> Cannot install libjack-dev-session; apt errors follow:


>It installs libjack-dev but fails to build anyway.
>Any hint?

Possibly the problem is that the build-dependency on a virtual package 
which is provided by multiple real packages.

binary dependencies are enforced by Policy to always be on real packages 
first, only as fallback on a virtual package.  This is not enforced for 
build-dependencies but the underlying problem of undeterministic 
behaviour in case of multiple solutions is similar.

...or perhaps (and hopefully!) it is simply lack of updating the package 
cache in the build environment.  What is it?  cowbuilder with sid + 
experimental suites?


  - Jonas

-- 
  * Jonas Smedegaard - idealist & Internet-arkitekt
  * Tlf.: +45 40843136  Website: http://dr.jones.dk/

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