Re: [tycho-user] please test stages tycho and tycho-extras build 0.15.0

[Igor Fedorenko <igor@xxxxxxxxxxxxxx>]

I believe this *appears* worse than it actually is.

The problem is triggered when both <0.15 and 0.15+ projects have shared
artifacts in local repository and 0.15+ projects either produce or
specifically consume packed artifacts. The problem won't appear in all
other cases, so I don't expect to see it too often even on large CI
servers like hudson.eclipse.org

Any project with at least some level of development activity should be
able to migrate to a new Tycho version or use a separate local repo,
which is literally single configuration toggle in Hudson. I believe this
applies both to current "master" branch and maintenance branches.

The problem is caused by a bug in Tycho <0.15. We could change metadata
format used by 0.15+ as a workaround, but I don't see why we should
perpetuate old bugs, especially at the cost of more complicated metadata
structure and the code needed to maintain it going forward.


--
Regards,
Igor

On 12-05-27 3:15 AM, Alex Blewitt wrote:
> https://bugs.eclipse.org/bugs/show_bug.cgi?id=380027 seems like a
> pretty big problem to me.
>
> The TL;DR is that running 0.15 on a box will cause subsequent 0.14
> builds to fail. This is a show stopper for organisations with lots of
> builds as not everyone can update their build dependencies at the
> same time. In fact, I wouldn't be surprised if it impacts at least
> some Eclipse projects once 0.15 is released.
>
> This can be avoided by building with a clean cache each time but
> there are some places where this doesn't happen. Fixing with a 0.14.2
> release suffers the same problem that people don't update versions at
> the same time.
>
> Finally there are often requirements to go back and fix/patch older
> releases (eg Eclipse 3.7.2 was released way after 3.8 was in
> development). When you go back you use the older took chain at the
> time and you don't want your adoption of a newer version to cause
> problems in creating patches.
>
> Alex
>
> Sent from my iPhone 4S >
> On 27 May 2012, at 03:38, Igor Fedorenko<igor@xxxxxxxxxxxxxx>  wrote:
>
> > I've staged tycho and tycho-extras build 0.15.0 and plan to promote it
> > to Central repository some time next week, provided no serious
> > regressions are reported, of course. Please test this new build and
> > report any problems you find either here or through bugzilla.
> >
> > List of solved problems and new features:
> > https://bugs.eclipse.org/bugs/buglist.cgi?list_id=1749726;query_format=advanced;target_milestone=0.15.0;product=Tycho
> >
> > Staging repo:
> > https://oss.sonatype.org/content/repositories/orgeclipsetycho-255/
> >
> > --
> > Regards,
> > Igor
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