From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: Re: Should 'build-expression->derivation' be used for new build
	systems?
Date: Sat, 20 Oct 2018 12:03:55 +0200
Message-ID: <87tvlhaq9g.fsf@gnu.org>
References: <87woqfcatr.fsf@gmail.com> <87muraf2vl.fsf@gnu.org>
	<87zhv9rk5o.fsf@fastmail.com>
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]:51372)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <ludo@gnu.org>) id 1gDo71-0002qQ-Hr
	for guix-devel@gnu.org; Sat, 20 Oct 2018 06:04:04 -0400
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <ludo@gnu.org>) id 1gDo6x-00056a-Ip
	for guix-devel@gnu.org; Sat, 20 Oct 2018 06:04:01 -0400
In-Reply-To: <87zhv9rk5o.fsf@fastmail.com> (Joshua Branson's message of "Fri,
	19 Oct 2018 12:11:31 -0400")
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: Joshua Branson <jbranso@fastmail.com>
Cc: guix-devel@gnu.org

Hello,

Joshua Branson <jbranso@fastmail.com> skribis:

> ludo@gnu.org (Ludovic Court=C3=A8s) writes:

[...]

>> The story of =E2=80=98build-expression->derivation=E2=80=99 is that of a=
n unfinished
>> transition to G-expressions.  :-)
>>
>> There=E2=80=99s a branch called =E2=80=98wip-build-systems-gexp=E2=80=99=
 that aims to complete
>> that transition, but I haven=E2=80=99t yet gotten around to actually fin=
ishing
>> the work.  This is one of the things I want us to complete for 1.0
>> though, so sooner rather than later.
>
> May I ask why the transition?  Just curious.

G-expressions address shortcomings of plain s-expressions when used to
write build expressions as in Guix and for code generation in general
(=E2=80=9Ccode staging=E2=80=9D); see:

  https://www.gnu.org/software/guix/manual/en/html_node/G_002dExpressions.h=
tml
  https://hal.inria.fr/hal-01580582/en

Ludo=E2=80=99.