I did the third option for CDT and just made up a new group id for the features 
that conflicted. Worked fine.

From: [email protected] 
[mailto:[email protected]] On Behalf Of Oberhuber, 
Martin
Sent: Tuesday, December 13, 2011 7:04 AM
To: Cross project issues ([email protected])
Subject: [cross-project-issues-dev] Tycho and FeatureID == BundleID

Hi all,

As our TM/RSE project is starting migration to Tycho, we're running into the 
Tycho limitation that some of our features include a branding plugin with the 
same name; and featureID == bundleID needs to be treated specially for 
Maven/Tycho. From what I've seen so far,


-          New / incubating projects typically rename their features e.g. by 
appending a ".feature" postfix, e.g. "org.eclipse.rse.feature"

-          But this is a breaking change for consumers including features, so 
some projects rename the branding plugin instead (e.g. appending a ".core" 
postfix)

-          But this is a breaking change for consumers which depend on the 
bundle, so some (particularly older) projects use a special Maven groupID for 
the features as per https://bugs.eclipse.org/bugs/show_bug.cgi?id=353384#c7

I'm leaning towards the 3rd option (special Maven GroupID for features) since I 
don't want to break existing adopters. I've seen comments saying that two 
groupID's in one project is confusing when cleaning a repo, but on the other 
hand I understand that the groupID translates into a directory hierarchy in 
Maven. So appending a ".features" to the groupID ends up as a subdirectory 
which seems OK to me.

Any comments on the approach ?
What have others done ?

Regarding the groupID itself, there was discussion 
[1]<https://bugs.eclipse.org/bugs/show_bug.cgi?id=288644> between "org.eclipse" 
flat for all, or "org.eclipse.(3rdBundleSegment)", or "org.eclipse.(projectID)" 
... we have never officially resolved the original question, but it seems to me 
that the de-facto trend goes towards the 2nd option with very few exceptions. 
So it looks like in TM/RSE we're going to get 5 groupIDs in total:

-          org.eclipse.dstore

-          org.eclipse.rse

-          org.eclipse.rse.features

-          org.eclipse.tm

-          org.eclipse.tm.features

Does that sound acceptable, or should we rather fold the .dstore groupID into 
the .rse namespace ?

[1] https://bugs.eclipse.org/bugs/show_bug.cgi?id=288644

Thanks,
Martin
--
Martin Oberhuber, SMTS / Product Architect - Development Tools, Wind River
direct +43.662.457915.85  fax +43.662.457915.6

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