Those are questions that are hard to answer. My guess would be if you just 
have a few "pre-reqs" (such as "just SDK and XML"), you'd be better off 
specifying those specific features (not even categories). If you have a 
large number of complicated pre-reqs, my quess is you'd be better off 
creating your repo during your build ... all three of the main ones at use 
at Eclipse projects (that I know about) have ways of "creating a 
repository" and various methods of specifying required pre-reqs. Sounds 
like you have a situation where there are lots of methods to accomplish 
what you need, and the hard part is knowing which is easiest. 

Good luck ... let us know what you learn! 




From:   Stephan Herrmann <[email protected]>
To:     [email protected], 
Date:   10/08/2013 07:22 AM
Subject:        Re: [cross-project-issues-dev] b3 aggregator can't consume 
kepler repo?
Sent by:        [email protected]



Thanks, David, for comprehensive hints!

It seems the normal solution will be to specify kepler
as a validation repo rather than as a mapped repo. Good.

In some cases, however, I have the requirement to create
a self contained repo. For that scenario I need to find
a way to specify kepler as a mapped repo with a suitable
filter so I don't get any contradictory requirements.
It seems I have two options:
- positively list contents, e.g., via categories
- define exclusion rules for all non-IDE stuff

Would excluding all of RAP and all target platforms
already do the job in this latter direction, or is
more trial and error to be expected?
Would I need to browse the full meta data for max=0,
e.g.?

thanks,
Stephan


On 10/08/2013 03:34 AM, David M Williams wrote:
> That's not a very good error message, is it.
>
> But, if I had to guess (your description is pretty high level) I suspect 
you are basically telling b3 aggregator to combine "all of
> Kepler" with your repo ... right so far?  If so, then I suspect you are 
running into the (intentional) "negative dependencies" that
> are defined for some "runtime only features", that are there to 
explicitly prevent some features from "being installed together" --
> in this case, to prevent some "runtime only" features, say, from RAP, 
from being installed into the IDE.
>
> As background on these topics, you might want to read
>
> https://bugs.eclipse.org/bugs/show_bug.cgi?id=385512
> https://bugs.eclipse.org/bugs/show_bug.cgi?id=276000
> https://bugs.eclipse.org/bugs/show_bug.cgi?id=365004#c16
> https://bugs.eclipse.org/bugs/show_bug.cgi?id=373725
> or p2 mailing list,
> http://dev.eclipse.org/mhonarc/lists/p2-dev/msg04698.html
>
> This "advanced technique" was introduced in Kepler. Previously, in Juno, 
everyone used a "fake" A.PDE.Target.Platform requirement
> which only the aggregator knew about with respect to particular 
category. With the negative requirements now in use, p2 knows about
> it too, and you can specify, for example, as RAP does, "install this 
feature, or SWT, but never both together" (or, something like
> that).
>
> Now, I could guess at what you are trying to accomplish, and offer some 
possible solutions, but then this reply would get really
> long. :)
> But, I'll give some hints ... the answer is probably in
> http://wiki.eclipse.org/Eclipse_b3/aggregator/manual#Mapped_Repository
> or
> 
http://wiki.eclipse.org/Eclipse_b3/aggregator/manual#Validation_Repository
> or, indirectly, in
> http://wiki.eclipse.org/Equinox/p2/Customizing_Metadata
>
> If not, you might try a "how do I ... " question on the eclipse.b3 
newsgroup/forum.
>
> HTH
>
>
>
>
>
> From: "Stephan Herrmann" <[email protected]>
> To: [email protected],
> Date: 10/07/2013 04:40 PM
> Subject: [cross-project-issues-dev] b3 aggregator can't consume kepler 
repo?
> Sent by: [email protected]
> 
------------------------------------------------------------------------------------------------------------------------------------
>
>
>
> I've had some fights with the b3 aggregator today and it seems to boil 
down to the fact that the aggregator cannot consume the
> kepler repository, neither releases/kepler, nor one of the children 
201306260900 or 201309270900.
>
> To witness: I have a toy aggregation (1 feature with one plugin) that 
validates OK, but as soon as I add the kepler repo the
> aggregator dies with:
>
> org.eclipse.core.runtime.CoreException: Cannot complete the install 
because some dependencies are not satisfiable
> at 
org.eclipse.b3.aggregator.engine.ValidationSetVerifier.run(ValidationSetVerifier.java:686)
> at 
org.eclipse.b3.aggregator.engine.Builder.runRepositoryVerifier(Builder.java:1704)
> at org.eclipse.b3.aggregator.engine.Builder.run(Builder.java:1635)
> at
> 
org.eclipse.b3.aggregator.presentation.AggregatorActionBarContributor$BuildAggregationAction$1.run(AggregatorActionBarContributor.java:292)
> at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53)
>
> It's the same exception as in 
https://bugs.eclipse.org/bugs/show_bug.cgi?id=321756#c11
>
> Adding the juno SR2 repo doesn't have this effect (full juno repo has a 
conflict in a modisco feature).
>
> Has anybody else seen this?
> Are those repos broken, or is it "just" b3?
>
> FWIW I tried 4.2 and 4.3 versions of b3.
>
> Stephan
> _______________________________________________
> cross-project-issues-dev mailing list
> [email protected]
> https://dev.eclipse.org/mailman/listinfo/cross-project-issues-dev
>
>
>
>
> _______________________________________________
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>

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