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Bug 1073406 - Yum depsolver doesn't compare versions of virtual provides
Summary: Yum depsolver doesn't compare versions of virtual provides
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: yum
Version: 6.5
Hardware: x86_64
OS: Linux
high
high
Target Milestone: rc
: ---
Assignee: Packaging Maintenance Team
QA Contact: Karel Srot
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2014-03-06 11:43 UTC by Karel Srot
Modified: 2014-10-14 04:37 UTC (History)
3 users (show)

Fixed In Version: yum-3.2.29-51.el6
Doc Type: Bug Fix
Doc Text:
Cause: have several packages providing different versions of a virtual provides and install a package which requires that provides Consequence: yum's depsolver doesn't select the package with the highest version of virtual provides Fix: patch Result: yum's depsolver respects versions of virtual provides
Clone Of: 998707
Environment:
Last Closed: 2014-10-14 04:37:22 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2014:1410 0 normal SHIPPED_LIVE yum bug fix update 2014-10-14 00:54:51 UTC

Description Karel Srot 2014-03-06 11:43:12 UTC 
confirmed on RHEL-6 with yum yum-3.2.29-40.el6

+++ This bug was initially created as a clone of Bug #998707 +++

Description of problem:
When installing a package with a Requires: on a virtual provides, the version provided by the virtual provides: has no impact on the resolution and the depsolver ends up falling back on further techniques (such as fewest additional dependencies or shortest package name) to select the package to resolve.

How reproducible:
Every time

Steps to Reproduce:
I discovered this today while debugging an issue with OpenLMI.

We added a virtual "Provides: cim-server" to the packages sblim-sfcb (giving cim-server a version of 0) and tog-pegasus (giving cim-server a version of 1).

The expectation is that installing "openlmi-providers" which "Requires: cim-server" would automatically select tog-pegasus, since it provided the highest version of cim-server (unless sblim-sfcb was also manually provided on the yum command-line).

Actual results:
The yum resolver skipped this version comparison and fell back on using the number of additional dependent packages (1 for Pegasus vs. 0 for SFCB) and selected SFCB instead.

Expected results:
When only "Requires: cim-server" is provided, we would expect it to select the higher version unless sblim-sfcb was already installed or provided on the command-line.
Comment 6 errata-xmlrpc 2014-10-14 04:37:22 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHBA-2014-1410.html
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