From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: Re: [PATCH 13/14] gnu: Add SLEPc.
Date: Sun, 28 Jun 2015 22:18:26 +0200
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To: ericbavier@openmailbox.org
Cc: guix-devel@gnu.org, Eric Bavier <bavier@member.fsf.org>

ericbavier@openmailbox.org skribis:

> From: Eric Bavier <bavier@member.fsf.org>
>
> * gnu/packages/maths.scm (slepc, slepc-complex, slepc-openmpi)
>   (slepc-complex-openmpi): New variables.

[...]

> +          'install 'delete-doc
> +          ;; SLEPc installs polluting HTML documentation alongside heade=
rs in
> +          ;; $out/include.  Delete these, as users can browse them onlin=
e.

It would be best to move them to a =E2=80=9Cdoc=E2=80=9D output, so that us=
ers can have
them handy and be sure it=E2=80=99s the documentation that correspond to the
version they=E2=80=99re using.

OK with this change.

> +(define-public slepc-complex
> +  (package (inherit slepc)
> +    (name "slepc-complex")
> +    (propagated-inputs
> +     `(("petsc" ,petsc-complex)
> +       ,@(alist-delete "petsc" (package-propagated-inputs slepc))))
> +    (synopsis "Scalable library for eigenproblems (with complex scalars)=
")))
> +
> +(define-public slepc-openmpi
> +  (package (inherit slepc)
> +    (name "slepc-openmpi")
> +    (inputs
> +     `(("mpi" ,openmpi)
> +       ("arpack" ,arpack-ng-openmpi)
> +       ,@(alist-delete "arpack" (package-inputs slepc))))
> +    (propagated-inputs
> +     `(("petsc" ,petsc-openmpi)
> +       ,@(alist-delete "petsc" (package-propagated-inputs slepc))))
> +    (synopsis "Scalable library for eigenproblems (with MPI support)")))
> +
> +(define-public slepc-complex-openmpi
> +  (package (inherit slepc-openmpi)
> +    (name "slepc-complex-openmpi")
> +    (propagated-inputs
> +     `(("petsc" ,petsc-complex-openmpi)
> +       ,@(alist-delete "petsc" (package-propagated-inputs slepc-openmpi)=
)))
> +    (synopsis "Scalable library for eigenproblems (with complex scalars =
and MPI support)")))

That may call for a better system to override dependencies and build
options =C3=A0 la Spack.

OTOH, we do want common variants to be available explicitly as packages
so that they get built on Hydra and so on.

Food for thought...

Ludo=E2=80=99.