python26 note

[Toshio Kuratomi]

On Mon, Oct 04, 2010 at 07:46:22PM -0500, BJ Dierkes wrote:
> 
> On Oct 4, 2010, at 3:49 PM, Toshio Kuratomi wrote:
> 
> > On Mon, Oct 04, 2010 at 08:35:00PM +0200, Mathieu Baudier wrote:
> >> Hello Kevin,
> >> 
> >>> Reviewers and submitters of new packages welcome. :)
> >> 
> >> I had to rebuild the following two packages so that they are python26 modules:
> >> 
> >> python26-mod_wsgi
> >> http://elgis.argeo.org/repos/testing/5/elgis/SRPMS/repoview/python26-mod_wsgi.html
> >> 
> > mod_wsgi will need some work above and beyond simply rebuilding so that we
> > can get the python-library-it's-built-against right.  When we add mod_wsgi
> > we'd have:
> > 
> > mod_python
> > mod_wsgi
> > python26-mod_wsgi
> > 
> > I believe that a later version of mod_wsgi can also be built against
> > python-3.x so then we'd also have python3-mod_wsgi
> > 
> > In Fedora we'd probably handle this with the apache config files that check
> > whether incompatible modules are loaded and if not, then load the module.
> > 
> > In EPEL, maybe you want to allow explicit Conflicts tags to take care of
> > this case?  (It would be a difference between Fedora and EPEL packaging
> > guidelines but it may make sense.)
> 
> This same issue/question came up in my review for mod_python26:
> 
> https://bugzilla.redhat.com/show_bug.cgi?id=638362
> 
> 
> Originally I had an explicit 'Conflicts: mod_python' which was inherited from the package in IUS (based on IUS policy).  The packages conflict because they both provide python_module.  As noted in the ticket... even if mod_python26 was patched to work side-by-side with mod_python... all of the Apache directives provided by python_module and/or python26_module would still conflict.... meaning they can't be installed and run simultaneously.  The options seem to be:
> 
>  * Make the package explicitly conflict
>  * Add an IfModule check for python_module, and if it isn't already loaded then load from mod_python26
> 
> 
> To me, the first option is very clear and makes sense.  From a users perspective... if they install mod_python26 while mod_python is installed... they may be a bit confused as to why mod_python26 just "doesn't work".
> 
<nod> -- In Fedora we want to steer clear of Conflicts so we want to go with
the second option but: 1) There's less versions of python there (only
a single python2 and a single python3) and 2) EPEL has a different audience
than Fedora with different needs.  I think this is definitely something that
EPEL could ponder upon and write into the EPEL-specific Guidelines as
a difference.

-Toshio
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