[Rpm-maint] OR'ed dependency check

[Panu Matilainen]

On Thu, 28 Feb 2008, Alex Lobanovsky wrote:

> Thank you!
> The link to the manual is great!
>
> I understood the idea of these "virtual provides". It works fine unless you
> have no sources of the packages you would require.
> Then I'm completely dependent on sanity and common sense of other developers
> - if they add _common_ "provides" strings.
>
> In my case, I need to
> Requires: wine OR wine-core AND wine-ldap
> Unfortunately, wine, wine-core and wine-ldap do no share same provide
> strings (except for huge list of various .so's, but I don't think it's a
> good idea to rely on list of libraries).

If we're talking about wine as packaged in Fedora, you just need to depend 
on wine-ldap. wine-ldap will bring in wine-core through it's dependencies 
if not installed already, and if you have wine (which is just a 
metapackage requiring all the subpackages) then you already have wine-ldap 
and wine-core installed.

BTW using common filenames as "virtual provides" is perfectly valid 
approach too - obviously doesn't work if the OR-packages don't share 
common paths, but it's not rare that they do.

 	- Panu -