Problem with replacing packages

[Adam Majer <adamm@galacticasoftware.com>]

Hi all,

I wish to combine two packages into one:

xshipwars-common + xshipwars -> xshipwars

So I put the following into debian/control:

Package: xshipwars
Architecture: any
Depends: xshipwars-images-st (>= 1.7), ${shlibs:Depends}
Suggests: jscalibrator, xshipwars-sounds-st (>= 1.4)
Replaces: xshipwars-common
Conflicts: xshipwars-common

[prev version depends on xshipwars-common]

This fails miserably though:

# dpkg -i xshipwars_1.34.1-2_i386.deb
dpkg: considering removing xshipwars-common in favour of xshipwars ...
dpkg: no, cannot remove xshipwars-common (--auto-deconfigure will help):
 xshipwars depends on xshipwars-common (= 1.34.1-1)
  xshipwars-common is to be removed.
dpkg: regarding xshipwars_1.34.1-2_i386.deb containing xshipwars:
 xshipwars conflicts with xshipwars-common
  xshipwars-common (version 1.34.1-1) is installed.
dpkg: error processing xshipwars_1.34.1-2_i386.deb (--install):
 conflicting packages - not installing xshipwars
Errors were encountered while processing:
 xshipwars_1.34.1-2_i386.deb


Adding a "Provides: xshipwars-common" nor adding version number to
xshipwars-common does not help.


Any ideas?

- Adam

PS. Do I need a dummy package for this? This would be as bad as 
having a useless package like xshipwars-common in the first place.