how to get version of package 'x' when installing package 'y'

[Jos Vos]

On Wed, Nov 18, 2009 at 03:52:59PM -0500, Fulko Hew wrote:

> Here's my dilemma (maybe I'm taking the wrong approach)...
> 
> In the spec file for 'mypackage', I want to have a shell script as part of
> the %post
> that does something based on the version of _another_ of my (already
> installed) packages
> 
> in pseudo code:
> 
> %post
> 
> VER=`rpm -q other_package --queryformat'%{VERSION}'
> if VER > 1.2 then
>    do something
> else
>    do something different
> fi

Use %trigger scripts.  In your mypackage spec file, add:


%triggerin -- other_package > 1.2
do something

%triggerin -- other_package <= 1.2
do something different


This will execute the scripts every time other_package is installed/updated
and also when your package is installed/upgraded and other_package was
already installed.

-- 
--    Jos Vos <jos at xos.nl>
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