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

[Mickael Istria <mistria@xxxxxxxxxx>]

On Fri, Nov 27, 2020 at 9:54 AM Ed Merks <ed.merks@xxxxxxxxx> wrote:

There is a big size difference between the *.jar versus the *.xml.xz, especially for the content.jar/content.xml.xz:
https://download.eclipse.org/justj/?file=releases/2020-12/202011271000
We'd not want to lose that I think, because this has a significant impact on the server traffic...

OK, I'll investigate that. I'm confident we can easily have .xz back in a way or another.

Because of that separation, goodness knows if what think I contribute will really come from my repo and not some other repo. [...] 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.

If I'm not mistaken, current aggregator has never guaranteed anything about provenance and does some dependency resolution against *all* repos already. I'll work on an example to prove me wrong or false and report the results and example. That will either strengthen or invalidate this argument.

But what stops the Tycho resolution mechanism from grabbing potentially older the ones from the Oomph repository anyway?  Nothing I think...

Nothing indeed, unless some other requirements enforces a specific version of the artifact in its dependency chain. But as mentioned, I believe it's the same for current aggregator already. More details to come next week.

I also wonder too if the two different implementations (resolution algorithms) use to build the repositories really do actually produce the same repositories?

 They're both relying on p2 director so there shouldn't be a too big difference; but we'll diff the output.

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

I agree. However, I think there are still technical questions that need an answer before we require Planning Council to voice an opinion.