[Bug 600243] Review Request: libjpeg-turbo - MMX/SSE accelerated libjpeg

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https://bugzilla.redhat.com/show_bug.cgi?id=600243

--- Comment #33 from Kalev Lember <kalev at smartlink.ee> 2010-06-15 23:28:28 EDT ---
As soname deps are automatically handled by rpm, I bet most of the packages
which currently have manual libjpeg Requires do that because they really need
one of the tools. That's also why it's libjpeg-turbo-tools that is Obsoleting
libjpeg package, as opposed to libjpeg-turbo having the Obsoletes.

Since the libjpeg-turbo-tools package already contains Obsoletes: libjpeg, it'd
make sense to add the Provides: libjpeg also to the same libjpeg-turbo-tools
package.

Right now -tools subpackage has:
Obsoletes: libjpeg < 6b-47

To provide a clean upgrade path it should be:
Provides: libjpeg = 6b-47
Obsoletes: libjpeg < 6b-47


(In reply to comment #32)
> Also provides libjpeg in libjpeg-turbo will violate packaging guideline.    

Huh, how so? In fact, packaging guidelines [1] suggest to use the following
scheme to replace an existing package:
Provides: oldpackagename = $provEVR
Obsoletes: oldpackagename < $obsEVR

[1]
http://fedoraproject.org/wiki/PackageNamingGuidelines#Renaming.2Freplacing_existing_packages

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