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Re: [cross-project-issues-dev] [cbi-dev] Building SimRel with Tycho for 2021-03

On Fri, 27 Nov 2020 at 03:53, Ed Merks <ed.merks@xxxxxxxxx> wrote:

I'm not keen on the separation between where I specify the repo to use and where I specify what to include from that repo (and the absence of authoring support for that latter). Because of that separation, goodness knows if what think I contribute will really come from my repo and not some other repo.  

That is the case with b3 though. The guarantee is only as strong as what version requirement you put in the aggrcon file. If you specify an exact version in the aggrcon and another p2 repo has exactly the same version the bundle may be pulled from that repo instead. 

I also wonder too if the two different implementations (resolution algorithms) use to build the repositories really do actually produce the same repositories?    E.g., when I contribute Oomph, I do not contribute the http client bundles (as an example).  I do it that way so that I don't contribute conflicting or older versions of those things.  But what stops the Tycho resolution mechanism from grabbing potentially older the ones from the Oomph repository anyway?  Nothing I think...

The b3 implementation does not stop this case either. b3 does not limit itself to pulling from your p2 repo what you put in the aggrcon, it just guarantees that the output repo will have at least what you do specify. 


The Planning Council ought to speak out and the simrel participant opinions (if any one has one!), ought to be considered too.

I have just joined the planning council, we have a meeting on Wednesday so I'll make sure this comes up (although I expect it would have anyway :-)


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