Strange behaviour of ati-x11-drv

[Dario Castellarin]

Hello,
 today I noticed a strange behaviour of ati-x11-drv on FC6 x86_64:

[root at localhost ~]# yum install wine-core
Loading "installonlyn" plugin
Setting up Install Process
Setting up repositories
Reading repository metadata in from local files
Parsing package install arguments
Resolving Dependencies
--> Populating transaction set with selected packages. Please wait.
---> Downloading header for wine-core to pack into transaction set.
wine-core-0.9.32-1.fc6.i3 100% |=========================|  67 kB    
00:00    
---> Package wine-core.i386 0:0.9.32-1.fc6 set to be updated
--> Running transaction check
--> Processing Dependency: libGLU.so.1 for package: wine-core
--> Restarting Dependency Resolution with new changes.
--> Populating transaction set with selected packages. Please wait.
---> Downloading header for mesa-libGLU to pack into transaction set.
mesa-libGLU-6.5.1-9.fc6.i 100% |=========================|  17 kB    
00:00    
---> Package mesa-libGLU.i386 0:6.5.1-9.fc6 set to be updated
--> Running transaction check

Dependencies Resolved

=============================================================================
 Package                 Arch       Version          Repository        Size
=============================================================================
Installing:
 wine-core               i386       0.9.32-1.fc6     extras            8.9 M
Installing for dependencies:
 mesa-libGLU             i386       6.5.1-9.fc6      updates           227 k

Transaction Summary
=============================================================================
Install      2 Package(s)        
Update       0 Package(s)        
Remove       0 Package(s)        

Total download size: 9.1 M
Is this ok [y/N]: y
Downloading Packages:
(1/2): wine-core-0.9.32-1 100% |=========================| 8.9 MB    
00:41    
(2/2): mesa-libGLU-6.5.1- 100% |=========================| 227 kB    
00:04    
Running Transaction Test
Finished Transaction Test
Transaction Test Succeeded
Running Transaction
  Installing: mesa-libGLU                  ######################### [1/2]
  Installing: wine-core                    ######################### [2/2]

Installed: wine-core.i386 0:0.9.32-1.fc6
Dependency Installed: mesa-libGLU.i386 0:6.5.1-9.fc6
Complete!
[root at localhost ~]# yum remove ati-x11-drv
Loading "installonlyn" plugin
Setting up Remove Process
Resolving Dependencies
--> Populating transaction set with selected packages. Please wait.
---> Package ati-x11-drv.x86_64 0:8.34.8-2.fc6 set to be erased
--> Running transaction check
Setting up repositories
core                      100% |=========================| 1.1 kB    
00:00    
dell-software             100% |=========================|  951 B    
00:00    
fwupdate                  100% |=========================|  951 B    
00:00    
updates                   100% |=========================| 1.2 kB    
00:00    
freshrpms                 100% |=========================|  951 B    
00:00    
extras                    100% |=========================| 1.1 kB    
00:00    
Reading repository metadata in from local files
--> Processing Dependency: libGL.so.1 for package: wine-core
--> Processing Dependency: libGL.so.1 for package: mesa-libGLU
--> Restarting Dependency Resolution with new changes.
--> Populating transaction set with selected packages. Please wait.
---> Package wine-core.i386 0:0.9.32-1.fc6 set to be erased
---> Package mesa-libGLU.i386 0:6.5.1-9.fc6 set to be erased
--> Running transaction check

Dependencies Resolved

=============================================================================
 Package                 Arch       Version          Repository        Size
=============================================================================
Removing:
 ati-x11-drv             x86_64     8.34.8-2.fc6     installed          21 M
Removing for dependencies:
 mesa-libGLU             i386       6.5.1-9.fc6      installed         512 k
 wine-core               i386       0.9.32-1.fc6     installed          39 M

Transaction Summary
=============================================================================
Install      0 Package(s)        
Update       0 Package(s)        
Remove       3 Package(s)        

Is this ok [y/N]:

why does wine depends on the 32bit libGL.so.1 library provided by 
ati-x11-drv?

Dario