[wpkg-users] Breaking package inheritance

[Jon Rhoades]

It actually just occurred to me how to do this... 

In the application you want all users to get unless they have the full/better version, simply check to see if the other version is installed and ensure that priority is set so the better version installs first. 

For example I want all users to have Adobe reader, except if they have Acrobat, so in the adobe reader package.xml I have: 

<package id="adobereader9" 
name="Adobe Reader 9" 
revision="9410" 
priority="50"> 
<check type="logical" condition="or"> 
<check type="uninstall" condition="exists" path="Adobe Reader 9.4.1" /> 
<check type="uninstall" condition="exists" path="Adobe Acrobat 9 Pro" /> 
</check> 

Hence it won't install if Acrobat is installed. 

It's a bit of a hack, and introduces a dependency on another file which I don't like, but I can live with it! 

Regards Jon 



From: "Jon Rhoades" <jrhoades at svi.edu.au> 
To: wpkg-users at lists.wpkg.org 
Sent: Friday, December 17, 2010 9:57:21 AM 
Subject: [wpkg-users] Breaking package inheritance 


Hi, 

Just wondering if there was a way to break the inheritance of packages when another package supersedes it. For instance all of our Profiles depend on a "basic" profile which contains Firefox, Adobe Reader, Flash and a few housekeeping packages. However some of our PCs use a profile with Adobe Acrobat - it would be nice if a PC getting Acrobat doesn't get Adobe Reader. 

I appreciate that I could just not have the profile depend upon the basic, but the beauty of WPKG for us is the chaining of profiles, a typical PC may get a unique profile, depending on a group profile, depending on an organisation profile, depending on a default profile depending on a basic profile... 

Hence, it would be great to be able in the package tag for Acrobat to have a tag along the lines of dont-install="reader". 

Reagrds Jon 

-- 
Jon Rhoades 
Research Information Systems 
St Vincent's Academic Centre 
(Incorporating The University of Melbourne Departments of Medicine, Surgery and Clinical School (St.Vincent's), St Vincent's Institute and O'Brien Institute) 

St Vincent's Institute 
9 Princes St Fitzroy Vic 3065 
p: 03 9288 2480 | x: 2399 | f: 03 9416 2676 

www.stv.unimelb.edu.au 
www.svi.edu.au 


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