Comment # 5 on bug 979528 from Michael Andres

(In reply to Paul Clarke from comment #2)
> >   ! VERSION is NOT the version of the providing package, 
> >     it's a property of the dependency
> 
> Can you clarify "property of the dependency" and how that is distinguished
> from the version of the providing package?

Wanted to express that in a dependency like 'advance-toolchain-devel = 8.0-5',
the version(range) '= 8.0-5' is compared against the version(range) of some
other 'advance-toolchain-devel' dependency, and never against the version of
some package that happens to contain an 'advance-toolchain-devel' dependency or
happens to be named 'advance-toolchain-devel'.

>From the solvers POV 'Requires: zypper' does not select the package because
it's named 'zypper', but because it matches the implicit 'Provides: zypper =
%{version}'.

Matching is based on dependencies. 

> Pkg: Foo-5.0
>      Provides: Foo = 5.0	(implicitly)
>
> Pkg: Foo-6.0
>      Provides: Foo = 6.0	(implicitly)
>
> Pkg: Xoo-1.0
>      Provides: Xoo = 1.0	(implicitly)
>      Provides: Foo = 7.0	(explicitly)

'Requires: Foo' will consider all 3 packages.
The real package names and versions may come into play when pruning such a set
of candidates.