[elrepo] Installation of acroread will pull in the ATI graphics driver from ELRepo

[Florian La Roche]

On Wed, Mar 16, 2011 at 01:43:46AM +0200, Manuel Wolfshant wrote:
> On 03/16/2011 01:36 AM, Phil Perry wrote:
> > On 15/03/11 23:25, Phil Perry wrote:
> >> On 15/03/11 20:30, Phil Schaffner wrote:
> >>> Akemi Yagi wrote on 03/15/2011 04:02 PM:
> >>>> Hi all,
> >>>>
> >>>> This issue was first reported in the CentOS forum:
> >>>>
> >>>> http://www.centos.org/modules/newbb/viewtopic.php?topic_id=30539&forum=14
> >>>>
> >>>> On RHEL-6 (or SL-6), if you run 'yum install acroread' with elrepo
> >>>> enabled, that would pull in kmod-fglrx and fglrx-x11-drv.
> >>> This will not happen if mesa-libGL is already installed, at least with
> >>> the Adobe AdobeReader_enu package.
> >>>
> >> $ rpm -qp --requires AdbeRdr9.4.2-1_i486linux_enu.rpm | grep libGL
> >> libGL.so.1
> >>
> >> The issue is that both mesa-libGL and fglrx-x11-drv(-32bit) provide
> >> libGL.so.1.
> >>
> >> When elrepo is installed (and enabled), it appears to take priority over
> >> packages from RHN for satisfying dependencies.
> >>
> > Interestingly, the nvidia packages also satisfy that dependency in
> > providing libGL.so.1, so I wonder why yum picks the fglrx package over
> > any of the nvidia packages? Perhaps it's just alphabetical in the case
> > of many packages meeting an uninstalled dependency, all other things
> > being equal.
> yum has a complex algorithm, but you are right, in some of  the cases 
> it's pure alphabetical. try yum provides MTA or server(smtp), smtpd, 
> smtpdaemon

Sometimes "shortest name wins" is also implemented.

best regards,

Florian La Roche