From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: Re: [PATCH] Add pyusb.
Date: Thu, 07 Apr 2016 22:49:22 +0200
Message-ID: <874mbdb0vh.fsf@gnu.org>
References: <87r3etoj7j.fsf@elephly.net>
	<20160329212748.7741d2be@openmailbox.org> <87h9foo41b.fsf@elephly.net>
Mime-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: quoted-printable
Return-path: <guix-devel-bounces+gcggd-guix-devel=m.gmane.org@gnu.org>
Received: from eggs.gnu.org ([2001:4830:134:3::10]:42590)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <ludo@gnu.org>) id 1aoGro-0000kZ-Jq
	for guix-devel@gnu.org; Thu, 07 Apr 2016 16:49:29 -0400
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <ludo@gnu.org>) id 1aoGrl-0004iI-D2
	for guix-devel@gnu.org; Thu, 07 Apr 2016 16:49:28 -0400
In-Reply-To: <87h9foo41b.fsf@elephly.net> (Ricardo Wurmus's message of "Wed,
	30 Mar 2016 08:47:44 +0200")
List-Id: "Development of GNU Guix and the GNU System distribution."
	<guix-devel.gnu.org>
List-Unsubscribe: <https://lists.gnu.org/mailman/options/guix-devel>,
	<mailto:guix-devel-request@gnu.org?subject=unsubscribe>
List-Archive: <http://lists.gnu.org/archive/html/guix-devel/>
List-Post: <mailto:guix-devel@gnu.org>
List-Help: <mailto:guix-devel-request@gnu.org?subject=help>
List-Subscribe: <https://lists.gnu.org/mailman/listinfo/guix-devel>,
	<mailto:guix-devel-request@gnu.org?subject=subscribe>
Errors-To: guix-devel-bounces+gcggd-guix-devel=m.gmane.org@gnu.org
Sender: "Guix-devel" <guix-devel-bounces+gcggd-guix-devel=m.gmane.org@gnu.org>
To: Ricardo Wurmus <rekado@elephly.net>
Cc: guix-devel <guix-devel@gnu.org>

Ricardo Wurmus <rekado@elephly.net> skribis:

> From 2f190da0d812501a4ab3db94a99ac8f7c6698cbc Mon Sep 17 00:00:00 2001
> From: Ricardo Wurmus <rekado@elephly.net>
> Date: Tue, 29 Mar 2016 09:06:09 +0200
> Subject: [PATCH] gnu: Add python-pyusb.
>
> * gnu/packages/libusb.scm (python-pyusb, python2-pyusb): New variables.

[...]

> +           (lambda* (#:key inputs #:allow-other-keys)
> +             (substitute* "usb/libloader.py"
> +               (("lib =3D locate_library\\(candidates, find_library\\)")
> +                (string-append
> +                 "lib =3D \""
> +                 (car (find-files (assoc-ref inputs "libusb")
> +                                  (lambda (file stat)
> +                                    (and ((file-name-predicate
> +                                           "^libusb-.*\\.so\\..*") file =
stat)
> +                                         (not (symbolic-link? file))))))

Maybe (with SRFI-1):

  (find (negate symbolic-link?)
        (find-files (assoc-ref inputs "libusb")
                    "^libusb-.*\\.so\\..*"))

But really this is nitpicking, the patch should go in.  :-)

Ludo=E2=80=99.