[MNG-7395] Support interpolation in extensions.xml

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.8.5, 4.0.0-alpha-2, 4.0.0
• Assignee: Michael Osipov
• Reporter: Christoph Läubrich
• Created: 24/Jan/22 12:14
• Updated: 20/Oct/22 08:11
• Resolved: 19/Feb/22 21:04

Description

Currently an entry has to be the following form:

<extension>
	<groupId>org.eclipse.tycho</groupId>
	<artifactId>tycho-build</artifactId>
	<version>2.7.0-SNAPSHOT</version>
</extension>

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:

<extension>
	<groupId>org.eclipse.tycho</groupId>
	<artifactId>tycho-build</artifactId>
	<version>${tycho-version|2.6.0}</version>
</extension>

I would then expect the following:

1. If no systemproperty with name 'tycho-version' exits, the value after the | is used as a default
2. 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.

Issue Links

• links to: GitHub Pull Request #136
• links to: GitHub Pull Request #665
• links to: GitHub Pull Request #673