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Building Xtext out of the box with maven fails on photon [message #1801630]

Wed, 23 January 2019 22:37

Duncan Krebs

Messages: 6
Registered: July 2014

Junior Member

Hello,
I am trying to do the simple task of creating a Xtext DSL project in eclipse photon using the new wizard and selecting maven as my build system but its failing out of the box. The error I am getting is below, love Xtext but hate building it, can anyone shed some light on the error and how I can get a freshly created XText project to build with maven in photon? It looks like the pom file generated is pointing to drop repository that no longer exists?

[WARNING] Failed to access p2 repository http://download.eclipse.org/tools/orbit/downloads/drops/S20180504181223/repository, use local cache. Neither http://download.eclipse.org/tools/orbit/downloads/drops/S20180504181223/repository/compositeContent.jar nor http://download.eclipse.org/tools/orbit/downloads/drops/S20180504181223/repository/compositeContent.xml found.
[ERROR] Failed to resolve target definition /Users/dkrebs/eclipse-workspace/org.xtext.example.mydsl.parent/org.xtext.example.mydsl.target/org.xtext.example.mydsl.target.target: Failed to load p2 metadata repository from location http://download.eclipse.org/tools/orbit/downloads/drops/S20180504181223/repository: Unable to read repository at http://download.eclipse.org/tools/orbit/downloads/drops/S20180504181223/repository. Artifact not found: http://download.eclipse.org/tools/orbit/downloads/drops2/S20180504181223/repository/content.xml.xz. -> [Help 1]
[ERROR]

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Re: Building Xtext out of the box with maven fails on photon [message #1801638 is a reply to message #1801630]

Thu, 24 January 2019 05:18

Christian Dietrich

Messages: 13317
Registered: July 2009

Senior Member

Welll you should replace the s repo with the release one.
Can you show the content of the target file?

It should point to https://download.eclipse.org/tools/orbit/downloads/drops/R20180606145124/repository/

For some reason this is not the case with Xtext 2.14
In newer releases the problem is already addressed

Need professional support for Xtext, Xpand, EMF?
Go to: https://www.itemis.com/en/xtext/
Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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Re: Building Xtext out of the box with maven fails on photon [message #1801656 is a reply to message #1801638]

Thu, 24 January 2019 09:28

Karsten Thoms

Messages: 715
Registered: July 2009
Location: Dortmund, Germany

Senior Member

Note that Eclipse Orbit repositories marked with "S" are so-called stable or milestone builds. They are deleted some time after a release repository is available. Sometimes these release repositories are not available at the time of an Xtext release, so we can only provide the latest stable release, which unfortunately break later. This is a chicken-egg-problem.

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