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[bug#39588] gnu: Add mpich, scalapack-mpich, mumps-mpich, pt-scotch-mpic

From: Ludovic Courtès
Subject: [bug#39588] gnu: Add mpich, scalapack-mpich, mumps-mpich, pt-scotch-mpich, python-mpi4py-mpich
Date: Mon, 17 Feb 2020 18:26:05 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/26.3 (gnu/linux)

Hi Maurice,

Thanks for the patches!  We like to have one patch per package, so I
started with MPICH:

Maurice Brémond <address@hidden> skribis:

> +(define-public mpich
> +   (package
> +     (name "mpich")
> +     (version "3.4a2")
> +     (source (origin
> +               (method git-fetch)
> +               (uri (git-reference
> +                     (url "";)
> +                     (commit "644051d13dc20aecd460ba3db088756659c3dad3") ; 
> tag v3.4a2
> +                     (recursive? #t)))
> +               (sha256
> +                (base32
> +                 "02ildr7wh40q1qaq5k8npb6vw6kv9szmrm3lspr6skqa5csmrrxw"))))

I ended up modifying the package:

  • To use 3.3 instead of 3.4a, the latter being listed as “alpha”;

  • To build from an official tarball rather than from a Git checkout,
    so that the GNU build system is already bootstrapped;

  • To ensure that the bundled copies of hwloc and ucx are not used.

I pushed the result here:

Let me know if I broke something.

As for the “-mpich” packages: they look good to me, though I’m not
entirely sure whether we should create “-mpich” variants for each of
them.  Ideally ‘--with-inputs’ would be enough, but I don’t know.  At
the same time, those variants don’t cost us much, so if they’re useful,
why not.

Thoughts, HPC folks?


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