[jbosstools-issues] [JBoss JIRA] (ERT-419) Issue in dep resolution with Neon.1 RC3 [EBZ#501222]

[Friendly Jira Robot (JIRA)]

Friendly Jira Robot created ERT-419:
---------------------------------------

             Summary: Issue in dep resolution with Neon.1 RC3 [EBZ#501222]
                 Key: ERT-419
                 URL: https://issues.jboss.org/browse/ERT-419
             Project: Eclipse Release Train
          Issue Type: Task
          Components: Equinox
            Reporter: Friendly Jira Robot
            Priority: Critical


We're testing JBoss Tools (built against Neon.0) on Neon.1 RC3 and get an issue that could be a p2 bug. Here is the error message:
```
Cannot complete the install because of a conflicting dependency.
  Software being installed: JBoss WebServices Tools 1.9.1.v20160608-0648 (org.jboss.tools.ws.feature.feature.group 1.9.1.v20160608-0648)
  Software currently installed: Eclipse XML Editors and Tools 3.8.0.v201608061842 (org.eclipse.wst.xml_ui.feature.feature.group 3.8.0.v201608061842)
  Only one of the following can be installed at once: 
    Eclipse XML Editors and Tools 3.8.0.v201608061842 (org.eclipse.wst.xml_ui.feature.feature.jar 3.8.0.v201608061842)
    Eclipse XML Editors and Tools 3.8.0.v201605120129 (org.eclipse.wst.xml_ui.feature.feature.jar 3.8.0.v201605120129)
  Cannot satisfy dependency:
    From: Eclipse Web Developer Tools 3.8.0.v201606030549 (org.eclipse.wst.web_ui.feature.feature.group 3.8.0.v201606030549)
    To: org.eclipse.wst.xml_ui.feature.feature.group [3.8.0.v201605120129]
  Cannot satisfy dependency:
    From: Eclipse XML Editors and Tools 3.8.0.v201605120129 (org.eclipse.wst.xml_ui.feature.feature.group 3.8.0.v201605120129)
    To: org.eclipse.wst.xml_ui.feature.feature.jar [3.8.0.v201605120129]
  Cannot satisfy dependency:
    From: Eclipse XML Editors and Tools 3.8.0.v201608061842 (org.eclipse.wst.xml_ui.feature.feature.group 3.8.0.v201608061842)
    To: org.eclipse.wst.xml_ui.feature.feature.jar [3.8.0.v201608061842]
  Cannot satisfy dependency:
    From: JBoss WebServices Tools 1.9.1.v20160608-0648 (org.jboss.tools.ws.feature.feature.group 1.9.1.v20160608-0648)
    To: org.eclipse.wst.web_ui.feature.feature.group [3.3.2,4.0.0)
```

As you can see on the last lines of this error, the org.jboss.tools.ws.feature.feature.group depends on a wide version range. And the product we're testing is the JS EPP package, which includes version 3.8.1.v201609011813 of this feature (in the range).
I don't really understand what could be another reason for this error, out of a p2 bug. So any hint would be welcome!

Steps to reproduce:
* Get some Neon.1 RC3 package from https://hudson.eclipse.org/packaging/job/neon.epp-tycho-build/ (I use the JS one, but it happens also with the Java and Java EE ones)
* Help > Install New Software > http://download.jboss.org/jbosstools/neon/staging/updates/ > select only "JBoss WebServices Tools"
* Keep "Contact all update sites" ticked to improve probabily of happy installation
* Finish
EXPECTED: installation goes fine
GOT: Error message above that seems inconsistent with my installation



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