[ http://jira.codehaus.org/browse/MNG-379?page=comments#action_41295 ] 

John Casey commented on MNG-379:
--------------------------------

What is the required logic for merging global and user plugin update policies? 
I've rethought about this, and I'm going to do a shallow merge for now - that 
is, add from the global if the user-level update isn't present...otherwise, 
ignore the global version. I'm not sure this is good for situations where 
you're trying to maintain a homogenous maven build across multiple developers 
on a single server/network sharing the same globals. In this case, it makes 
more sense to make the globals authoritative (though maybe not for the entirety 
of the global settings.xml), since one developer who uses a different plugin 
version than the rest could lead to a broken build.

Perhaps we need to add some sort of mergeAdvice to the pluginUpdate, to give a 
hint on how to merge the globals and the user-level??

> more control over plugin updates
> --------------------------------
>
>          Key: MNG-379
>          URL: http://jira.codehaus.org/browse/MNG-379
>      Project: Maven 2
>         Type: Improvement
>     Reporter: Brett Porter
>     Assignee: John Casey
>      Fix For: 2.0-alpha-3

>
>
> currently, plugin updates are checked daily (or whatever the plugin 
> repository's snapshot policy is), and new versions downloaded automatically.
> The user needs more control:
> - prompting for updates
> - ability to stick to a particular version
> - ability to check on different intervals than snapshots (probably default to 
> never, and use a --update-plugins clie or something)

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