[Yum] Yum Dependency Resolution algorithm

[seth vidal]

On Wed, 2006-05-24 at 22:20 +0200, Pauwel Coppieters wrote:
> Hello,
> 
> I have some trouble understanding how dependency resolution works in
> yum (2.6.1).
> 
> There is on my system an old version of transcode I would like to
> update. A newer version from RPMForge has a dependency on
> libpostproc.so.0.0.1
> 
> >
> > $ yum deplist transcode
> > Finding dependencies: 
> > Setting up repositories
> > rpmforge                                                             
> > updates-released                                                     
> > base                                                                 
> > extras                                                               
> > Reading repository metadata in from local files
> > package: transcode.i386 1.0.2-7.fc4.rf
> >   dependency: libpostproc.so.0.0.1
> >    Unsatisfied dependency
> > 
> 
> There is no package that provides libpostproc.so.0.0.1. However a
> local package is installed that provides libpostproc.so.0.0.1
> 
> > 
> > $ yum whatprovides libpostproc.so.0.0.1
> > Searching Packages: 
> > Setting up repositories
> > rpmforge                                                             
> > updates-released                                                     
> > base                                                                 
> > extras                                                               
> > Reading repository metadata in from local files
> > Importing additional filelist information
> > 
> > 
> > libpostproc.i386               1.0-0.14.pre6a.1.fc3.f
> installed             
> > Matched from:
> > /usr/lib/libpostproc.so.0.0.1
> > 
> 
> Eventually, yum fails to update transcode (see below). Is this
> intended behaviour, or should this work. If so, any directions as
> where to change in the source ?
> 
> Greetings
> 
> Pauwel Coppieters
> 
> 
> > 
> > # yum  update transcode
> > Setting up Update Process
> > Setting up repositories
> > rpmforge                                                           
> > updates-released                                                    
> > base                                                                 
> > extras                                                               
> > Reading repository metadata in from local files
> > Resolving Dependencies
> > --> Populating transaction set with selected packages. Please wait.
> > ---> Package transcode.i386 0:1.0.2-7.fc4.rf set to be updated
> > --> Running transaction check
> > --> Processing Dependency: libmpeg2convert.so.0 for package: transcode
> > --> Processing Dependency: libpostproc.so.0.0.1 for package: transcode
> > --> Processing Dependency: libmpeg2.so.0 for package: transcode
> > --> Restarting Dependency Resolution with new changes.
> > --> Populating transaction set with selected packages. Please wait.
> > ---> Package mpeg2dec.i386 0:0.4.0-8b.fc4.rf set to be updated
> > --> Running transaction check
> > --> Processing Dependency: libpostproc.so.0.0.1 for package: transcode
> > --> Finished Dependency Resolution
> > Error: Missing Dependency: libpostproc.so.0.0.1 is needed by package
> transcode
> >

run this:

yum list updates

and

yum list transcode\*

thanks

-sv