[Yum] multilib system installation

[James Antill]

Piotr Romanus <piotr.romanus at gmail.com> writes:

> On Thu, Jun 25, 2009 at 7:26 PM, James Antill <james-yum at and.org> wrote:
>>
>
>>  Yeh, that's not how it works. If you have foo.i386 and foo.x86_64
>> installed, and you need to update foo.i386 for a dep. then yum will
>> update both ... but it doesn't install things that aren't needed.
>
> Not sure I understand what you mean by "aren't needed". foo.i386 has
> the same set of "Requires" statements as foo.x86_64

 Unless by "the same set" you mean in the source, which is using
%{_isa} and you have an rpmbuild which fills those in ... then
explicit requires statements are exactly what I mean.

 If you have pkgA which has:

Requires: pkgB
BuildRequires: pkgC-devel

...then the first line is satisfied by either pkgB.i386 or
pkgB.x86_64, dito. the second line (but with pkgC-devel.*). So if you
install both pkgA.i386 _and_ pkgA.x86_64 ... yum will do what you
asked and only install pkgB.x86_64.

> Besides I performed a small experiment: I checked my diskless partition to
> see how many bzip2 packages I had installed (chrooted to the dikless partition
> before executing this):

 bzip2 has different deps. for different arches, exactly because
bzip2.i386 can't use bzip2-libs.x86_64:

 bzip2.x86_64 requires libbz2.so.1()(64bit)
 bzip2.i386   requires libbz2.so.1

-- 
James Antill -- james at and.org