From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: Re: import pypi: undefined symbol __gmpn_cnd_sub_n
Date: Wed, 25 Mar 2015 21:42:12 +0100
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To: Alexandre =?utf-8?B?SMOpYXVtw6k=?= <aheaume@gmail.com>
Cc: guix-devel@gnu.org

Alexandre H=C3=A9aum=C3=A9 <aheaume@gmail.com> skribis:

> Ludovic Court=C3=A8s <ludo@gnu.org> wrote:
>
>> It=E2=80=99s unclear to me how libhogweed.so gets loaded (nothing here d=
epends
>> on Nettle, AFAIK.)  But it looks like the problem is that /usr/bin/guile
>> (which comes from the host distro) is trying to dlopen stuff that is
>> built with Guix.  This usually won=E2=80=99t work notably because that w=
ould try
>> to load different copies of libc.so, libgmp.so, etc.
>
> Makes sense. The guile-gnutls package in ubuntu depends on libhogweed,
> so that's where it comes from.

Oh right, I forgot this one.

> Is it possible that the guile-gnutls bindings from guix are chosen
> over the host bindings, or something along these lines?

Yes, it seems to be the case.  When using Guile from the host distro,
you must use guile-gnutls from the host distro as well.

>> If it does, could you run, from Guix=E2=80=99s top-level build tree:
>>
>>   ./pre-inst-env guile -c '(use-modules (json) (guix pk-crypto))'

[...]

> ERROR: In procedure dynamic-link:
> ERROR: In procedure dynamic-link: file: "libgcrypt", message: "file not f=
ound"

Weird, did ./configure even pass?  You can run:

  ./configure --with-libgcrypt-prefix=3D/usr/whatever/

to make sure it picks libgcrypt.so from the host distro.

HTH,
Ludo=E2=80=99.