F20 System Wide Change: Perl 5.18

[Adam Williamson]

On Thu, 2013-06-13 at 11:10 -0600, Kevin Fenzi wrote:
> On Thu, 13 Jun 2013 13:23:51 +0000 (UTC)
> Petr Pisar <ppisar at redhat.com> wrote:
> 
> > On 2013-06-12, Kevin Fenzi <kevin at scrye.com> wrote:
> > > So, there's nothing preventing the side tag and rebuild anytime now
> > > right? 5.18.0 is out, so we could start that work in rawhide?=20
> > >
> > Currently 5.18.0 does not pass one test when running in mock and koji.
> > (It's because of the terminal usage in tested perl debugger.) We think
> > we could have solved this issue in a few days.
> 
> Cool. 
> 
> > Could you explain how the side tag inheritance works? It inherits
> > everything from rawhide, even builds made after the side tag creation,
> 
> yes. 
> 
> > except packages whose builds have been already made in the side tag.
> > Am I right? That means we still get fresh third-party dependencies
> > from rawhide.
> 
> yes. However, there's are several downsides: 
> 
> - Each side tag adds newrepo tasks which increases load a lot. 
> - If you rebuild perl-foo-1.0-1 in the side tag against the new perl,
>   then the maintainer has to fix something in rawhide, they would build
>   perl-foo-1.0-2 in rawhide and when the side tag was merged back over
>   either everyone would get the older one with the bug, or the newer
>   one against the old perl. So, it's really important to not take a
>   long time using a side tag to avoid this problem as much as possible. 

Seems like this one came true in practice. It seems like a 5.18 rebuild
run was done in a side tag and then merged back into Rawhide.
Unfortunately, quite a lot of the 5.18 rebuilds seem to have been done
prior to the general F20 mass rebuild - so the mass rebuild won out, and
effectively squelched the perl rebuild.

I'm rebuilding the packages I have installed locally that seem to have
been affected by this, but I'm sure there are others...
-- 
Adam Williamson
Fedora QA Community Monkey
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