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Bug 467774

Summary: Unable to explicitely downgrade a library due to problems with subslots
Product: Portage Development Reporter: Markos Chandras (RETIRED) <hwoarang>
Component: Core - DependenciesAssignee: Portage team <dev-portage>
Status: CONFIRMED ---    
Severity: normal CC: alexander, esigra, kripton, pacho, rose
Priority: Normal    
Version: unspecified   
Hardware: All   
OS: Linux   
Whiteboard:
Package list:
Runtime testing required: ---
Bug Depends on:    
Bug Blocks: 300071    

Description Markos Chandras (RETIRED) gentoo-dev 2013-04-28 18:47:25 UTC
so i emerged x11-libs/libfm-9999, then x11-misc/pcmanfm-1.1.0-r1 and then I try to downgrade x11-libs/libfm-1.1.0-r1 and I get this

helix ~ # emerge -1av =x11-libs/libfm-1.1.0-r1                                                                                                                                                                                                

These are the packages that would be merged, in order:

Calculating dependencies... done!
[ebuild     UD ] x11-libs/libfm-1.1.0-r1:0/4.1.1 [9999:0/4.0.0] USE="-debug -doc -examples -vala" 0 kB

Total: 1 package (1 downgrade), Size of downloads: 0 kB

!!! Multiple package instances within a single package slot have been pulled
!!! into the dependency graph, resulting in a slot conflict:

x11-libs/libfm:0

  (x11-libs/libfm-9999::gentoo, installed) pulled in by
    >=x11-libs/libfm-1.1.0:0/4.0.0= required by (x11-misc/pcmanfm-1.1.0-r1::gentoo, installed)

  (x11-libs/libfm-1.1.0-r1::gentoo, ebuild scheduled for merge) pulled in by
    =x11-libs/libfm-1.1.0-r1


I believe portage should allowed me to explicitly downgrade the library without marking the newest version first.
Comment 1 Zac Medico gentoo-dev 2013-04-28 19:39:29 UTC
If we translate the argument into an implicit mask for the higher unmatching versions in the same slot, then that should solve it.
Comment 2 Ben Kohler gentoo-dev 2014-03-20 18:27:01 UTC
*** Bug 500884 has been marked as a duplicate of this bug. ***
Comment 3 dE 2014-07-17 05:53:33 UTC
I would too like this behavior to be fixed.