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Re: [Fedora-packaging] Packaging guidelines for rubygems



On Mon, 2009-03-02 at 17:07 +0900, Mamoru Tasaka wrote:
> David Lutterkort wrote, at 03/02/2009 03:08 PM +9:00:
> > On Thu, 2009-02-26 at 17:41 +0100, Jeroen van Meeuwen wrote:
> >> I find patching rubygems (for CVEs) a pain in the ass because of the 
> >> packaging guideline requirement to have the rubygem package's Source0 be 
> >> the actual gem.
> >>
> >> I'd much rather work from tarballs.
> > 
> > I think the real culprit is that nothing is done until %install in basic
> > rubygem packages. 
> > 
> > Maybe we should move to a scheme where we 'install' the rubygem into the
> > source dir during %prep, and then copy files from there to
> > %{buildroot}%{gemdir} during %install.
> > 
> > David
> 
> I think you are saying "into the build dir" (i.e. %_builddir). Then:

Yeah, that's what I meant.

> As you know for rubygems containing C codes I suggested to install
> them first under %_builddir, compile C codes there and copy all files
> into %buildroot and this was already accepted by FPC/FESCo.
>
> So I think suggesting to install _all_ rubygems under %_builddir first
> can also be accepted.

I would hope so, too.

> What I am wondering currently is at what stage we should install rubygems
> into %_builddir, whether %prep or %build.
> Current "rubygem with C code" (proposed by me) is
> - to create "empty" directory first by "%setup -q -c -T" at %prep
> - then install rubygems under %_builddir at %build (then some compilation
>   is done in %build)
> - then copy all needed files at %install
> However if we want to use "%patch0 -p1 -b .foo", for example, for files
> installed under %_builddir, rubygems must be installed under %_builddir
> at %prep, because rpm does not accept %patch? method at %build like:

Since the main motiviation for a change is to enable the workflow that
RPM maintainers are used to, we do want the various sections to have
their 'usual' meanings, i.e.
  %prep  - unpack sources, apply patches
  %build - compile/generate files from sources
  %install - put files into their 'right' place

So the main deviation from what the guidelines for binary rubygems
suggest right now is that we'd run 'gem install' in %prep - for
Ruby-only gems not a big deal, but for binary gems, it's stupid, since
we'd need to recompile the gem in %build after patches have been
applied.

Unfortunately, rubygems don't have a way to split building them into
unpack/compile/install the same way as rpm's do.

David



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