Mailinglist Archive: zypp-devel (102 mails)

[Jan Kupec <jkupec@xxxxxxx>]

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Stefan Schubert wrote:
> Hi,
> apart from the solver call "resolvePool" ( collect all transactions from
> the pool, solving this transactions and
> writing the result back to pool) the solver can work off a given request
> queue too:
>
>     /**
>      * Resolve package dependencies:
>      *
>      * The solver works off the given queue and writes back the solution
>      * to pool.
>      *
>      * Returns "true" on success (i.e., if there were no problems that
>      * need user interaction) and "false" if there were problems.  In
>      * the latter case, use problems() and later applySolutions()
>      * below.
>      **/
>     bool resolveQueue (solver::detail::SolverQueueItemList & queue);    

Can resolveQueue and resolvePool be used together? I mean, if i use a
few addRequires(), then a collect a few QueueItems, then call
resolveQueue() and then resolvePool()? Should pose no problem, or?

> The queue can have elements which are described in the following classes:
>
> base class: SolverQueueItem.h
>
> SolverQueueItemDelete.h  SolverQueueItemInstall.h      
> SolverQueueItemLock.h
> SolverQueueItemInstallOneOf.h  SolverQueueItemUpdate.h
>
> Known problems:
> - The update and InstallOneOf request does not work correctly.
> - The error messages are too abstract now for the user.

Is this corrected by now? Esp. the update :O)

> (Jano, you can start implementation now :-) )

Ouch, almost one year passed from 'now' :O)

- -------------
BTW: apart from this, we will need even more rich solve API, e.g.
something to:
- - install specific name AND version (AND arch, AND from specific repo)
- - install specific capability with specific arch, repo (version we
  already handle).
- - plus some more - i'll try to get together a complete list.

Currently zypper handles this by itself, but it's bug-prone, as things
in libzypp change (e.g. priorities introduced), and the code is not
shared this way.

- --
cheers,
jano


 Ján Kupec
 YaST team
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