[jira] [Assigned] (MNG-7395) Support system-properties in extension.xml

["Michael Osipov (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MNG-7395?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael Osipov reassigned MNG-7395:
-----------------------------------

    Assignee: Michael Osipov

> Support system-properties in extension.xml
> ------------------------------------------
>
>                 Key: MNG-7395
>                 URL: https://issues.apache.org/jira/browse/MNG-7395
>             Project: Maven
>          Issue Type: Improvement
>            Reporter: Christoph Läubrich
>            Assignee: Michael Osipov
>            Priority: Major
>
> Currently an entry has to be the following form:
> {code:xml}
> <extension>
> 	<groupId>org.eclipse.tycho</groupId>
> 	<artifactId>tycho-build</artifactId>
> 	<version>2.7.0-SNAPSHOT</version>
> </extension>
> {code}
> This has the drawback that I always need to edit the extension.xml file and there is no way to specify it on the commandline.
> The proposal is to allow the follwoing:
> {code:xml}
> <extension>
> 	<groupId>org.eclipse.tycho</groupId>
> 	<artifactId>tycho-build</artifactId>
> 	<version>${tycho-version|2.6.0}</version>
> </extension>
> {code}
> I would then expect the following:
> # If no systemproperty with name 'tycho-version' exits, the value after the | is used as a default
> # If a systemproperty with name 'tycho-version' exits it is used as a version
> That way I can call mvn -Dtycho-version=2.7.0-SNAPSHOT clean install to override the default version.



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