[bug#69581] [PATCH 07/11] gnu: rust: Add tuning information.

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

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On Thu, Mar 07, 2024 at 10:38:06PM +0100, Ludovic Courtès wrote:
> Efraim Flashner <efraim@flashner.co.il> skribis:
> 
> > On Wed, Mar 06, 2024 at 07:10:54PM +0100, Ludovic Courtès wrote:
> >> Efraim Flashner <efraim@flashner.co.il> skribis:
> >> 
> >> > +      (properties `(`(append
> >> > +                       ,(alist-delete 'hidden? (package-properties base-rust))
> >> > +                       ,@(clang-properties "15"))))
> >> 
> >> Just realized that we cannot really call ‘clang-properties’ from here
> >> because ‘properties’ is not a thunked field, so this would lead to a
> >> top-level circular dependency…  You might need to duplicate the info.
> >
> > We also use the list for zig.
> >
> > Considering we're only supporting one version for rust duplicating the
> > information wouldn't be the worst thing but it'd be better to only have
> > it declared in one spot.
> 
> Then it should be declared in a module that’s not in a cycle with its
> users (that’s annoying!).  Maybe a separate ‘llvm-meta.scm’?

How about moving it into (guix cpu) together with the ones from gcc?
There are apparently some CPUs that are identical but have different
names that we could map together and would allow us to make any changes
to them in one place.  We've already pretty much done that with the
search paths.

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