Re: [bug#51845] [CORE-UPDATES] librsvg and rust

[Efraim Flashner <efraim@flashner.co.il>]

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On Wed, Dec 08, 2021 at 02:36:11PM +0000, Ricardo Wurmus wrote:
> 
> Ludovic Courtès <ludo@gnu.org> writes:
> 
> > Hello!
> >
> > For the record, this is a followup to Efraim’s proposal in
> > <https://issues.guix.gnu.org/51845>.
> >
> > Efraim Flashner <efraim@flashner.co.il> skribis:
> >
> >> Option 1:
> >> Track down the ~220 crates which form the dependency graph (of crates)
> >> for librsvg and pin them until the next core-updates cycle. Continue
> >> like with other packages and add newer versions (like cmake or meson) as
> >> packages need them.¹
> >
> > The advantage of this approach is that we could do it incrementally: we
> > could merge ‘core-updates-frozen’ today and just add pinned variants of
> > these 200+ crates as needed as time passes.  The downside is that it’s a
> > lot of crates to take care of, and we might still accidentally overlook
> > seemingly innocuous crate upgrades that end up causing major rebuilds.
> >
> >> Option 2:
> >> Use the bundled crates and treat it as just part of the librsvg source
> >> code.²
> >>
> >> Option 2b:
> >> Use the bundled crates for now to finish with core-updates-frozen and
> >> revisit this immediately on core-updates (not frozen).
> >
> > This option will involved a rebuild on x86_64, but the advantage is that
> > we’ll be safe going forward: we won’t accidentally cause world rebuilds
> > just because an obscure crate somewhere has been upgraded.
> >
> > [...]
> >
> >> I'm currently leaning option 2b, it'll get us past this hurdle for
> >> core-updates-frozen and let us make changes to the crates as we work to
> >> integrate them more fully into Guix.
> >
> > Same here; it’s not ideal, but it seems like the most reasonable
> > short-term option.
> >
> > If there are no objections, I’d suggest that you go ahead with this
> > plan.
> 
> I agree that 2b is the most sensible option in our current situation.

Patches pushed to core-updates-frozen. I added a TODO to fix the
situation.

Thanks for the input everyone.

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Efraim Flashner   <efraim@flashner.co.il>   רנשלפ םירפא
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