question about versioned dependencies in debian/control

[Harald Dunkel <harald.dunkel@aixigo.de>]

Hi folks,

I am building local git packages for Wheezy derived from the
official source package. Problem with debian/control:

:
Package: git
Architecture: any
Multi-Arch: foreign
Depends: ${shlibs:Depends}, perl-modules, liberror-perl,
 git-man (>> ${source:Upstream-Version}), git-man (<< ${source:Upstream-Version}-.)
:

If the top changelog line says

	git (1:2.1.2-0~xgo70+1) unstable; urgency=low

then I get an unresolvable conflict for the git-man package.
Using

	git (1:2.1.2-1~xgo70+1) unstable; urgency=low
	            ^^^

there is no such problem.

How comes? Both git and git-man are built from the same
source package.


Every helpful comment is highly appreciated.
Harri