gem2rpm and upgrades of existing rpms

[Achilleas Pipinellis]

On 06/23/2014 09:58 PM, Joe Rafaniello wrote:
> 
> 
> If gem2rpm could handle both initial and updates to the spec, we can cleanly separate the responsibilities and just delegate to gem2rpm for all or some of that work.
> I would be happy to have polisher be the wrapper around gem2rpm for larger "workflows."
> 
> I have only glanced at the gem2rpm code and don't know how much effort it is to handle "updates", this is just a curiosity at this point.
> 
> For example, I'm curious how are changes in packaging conventions currently handled?  
> Through new gem2rpm templates?

Yes. By default is uses this template[0] which was recently updated to
reflect new ruby 2.1 changes.

> Is there a migration path for updating an existing rpm spec from an old template to a new template?
> Is this all done manually currently?  Are there tools to enforce/verify packaging conventions?

Vit, has written a set of scripts which update the specs to current
guidelines[1], I don't know if some edge cases are missed though. You
can follow a previous discussion[2].

And to chime in the discussion, changing only the sections you mentioned
should not be that big a deal.

- version is easy to be fetched from rubygems.org
- Changelog is also easy
- Requires are not needed for fc21 and above (could use a different
template for other branches)
- BR could be tricky, since current implementation [3] (correct me if
I'm wring) checks development deps from gemspec and eg. tools needed for
the test suites might not be in that list. So, you can't avoid manual
intervention after all.

As Josef wrote, ideally what we need is some sort of a web app that
checks/builds every time a new version is out.


[0]
https://github.com/lutter/gem2rpm/blob/master/templates/fedora-21-rawhide.spec.erb
[1] https://github.com/voxik/fermig
[2]
https://lists.fedoraproject.org/pipermail/ruby-sig/2014-April/001537.html
[3]
https://github.com/lutter/gem2rpm/blob/master/templates/fedora-21-rawhide.spec.erb#L21

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