On 03/19/2015 03:34 AM, John Pilkington wrote:
> I had been under the impression that it was likely to be safe to use 'epel'
> packages, so, wishing to provide feedback, I installed a new version of
> qtwebkit from epel-testing.  No hint of problems during installation, but
> programs using it failed.  I now have them apparently working after installing
> glib2 from SL7rolling in place of the earlier build in SL7x, but I'm less than
> happy about such cherry-picking.
> 
> I'm told that epel packages support the current upstream release, 7.1, so it
> seems to me that systems based on the recommended SL7x and using epel will be
> at risk.
> 
> https://bugzilla.redhat.com/show_bug.cgi?id=1202735

The ultimate cause of this issue was an upgrade of glib2 by RedHat in RHEL
7.1.  And because the glib2 library does not use symbol versioning, rpm cannot
automatically add the proper requires/provides to avoid installing
incompatible libraries.  So, this has nothing to do with EPEL, per se, but
just normal issues that can occur with any update to RHEL.

Thanks for the heads up though.  I suspect many other glib2 using libraries
may be affected as more epel updates come out.

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Orion Poplawski
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