[tycho-user] Build a feature patch for org.eclipse.jdt.core

[Felix Dorner <felix.dorner@xxxxxxxxx>]

Hi,

I have no prior experience with maven nor tycho, please be nice.

I am trying to help the groovy-eclipse project by investigating a better 
way to maintain their jdt feature patch. The goal is to build a feature 
patch that includes a single patched plugin: org.eclipse.jdt.core. I 
have forked org.eclipse.jdt.core and applied the groovy patches. I am 
able to build this patched org.eclipse.jdt.core bundle with the 
instructions in 
https://wiki.eclipse.org/Platform-releng/Platform_Build#Building_Selected_Projects: 
When I execute 'mvn -Pbuild-individual-bundles clean install', my 
patched bundle is installed into the local repository (With a -SNAPSHOT 
qualifier)

Now for the feature patch: Since the org.eclipse.jdt.core repo only 
contains bundles and no features, I have also cloned org.eclipse.jdt to 
see how they build the org.eclipse.jdt feature. Here, I have added a 
'module' that contains the groovy feature patch, using the 
org.eclipse.jdt feature pom as a template. The pom and feature.xml for 
the patch are pasted below.

Here I execute 'mvn -Pbuild-individual-bundles clean verify' to build 
the feature patch. My current problem is that the resulting feature 
references the latest org.eclipse.jdt.core milestone build from the 
target definition in the aggregator parent build, rather than the 
locally available SNAPSHOT build. (I am not sure how -SNAPSHOT would 
become a timestamped build which I'd guess need to happen here also..)

Now, I will for sure have follow up questions, but for now just this: 
How can I make the build to use the snapshot build instead?

Thanks for any help,
Felix


Here is the pom.xml of the feature patch:

<project xmlns="http://maven.apache.org/POM/4.0.0"; 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; 
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 
http://maven.apache.org/xsd/maven-4.0.0.xsd";>
  <modelVersion>4.0.0</modelVersion>
  <parent>
    <artifactId>eclipse.jdt</artifactId>
    <groupId>eclipse.jdt</groupId>
    <version>4.6.0-SNAPSHOT</version>
  </parent>
  <groupId>groovy-eclipse</groupId>
  <artifactId>org.codehaus.groovy.jdt.patch</artifactId>
  <version>3.12.0-SNAPSHOT</version>
  <packaging>eclipse-feature</packaging>
</project>

And feature.xml:
<?xml version="1.0" encoding="UTF-8"?>

<feature
      id="org.codehaus.groovy.jdt.patch"
      label="%featureName"
      version="3.12.0.qualifier"
      provider-name="%providerName"
      plugin="org.codehaus.groovy.eclipse">

[...]

   <requires>
      <import feature="org.eclipse.jdt" patch="true"/>
   </requires>

   <plugin
         id="org.eclipse.jdt.core"
         download-size="0"
         install-size="0"
         version="0.0.0"
         unpack="false"/>

</feature>