From mboxrd@z Thu Jan  1 00:00:00 1970
From: Pierre Neidhardt <mail@ambrevar.xyz>
Subject: Re: Parameterized packages
Date: Mon, 20 Jan 2020 10:08:41 +0100
Message-ID: <87tv4qjy06.fsf@ambrevar.xyz>
References: <8736ldq74z.fsf@netris.org> <20190719202906.lbanx5puk7t6q4cr@cf0>
 <87a7753boq.fsf@ambrevar.xyz> <87h813wah0.fsf@gnu.org>
 <87v9piut40.fsf@ambrevar.xyz>
 <CAJ3okZ3W85av6SPkY9yjH9XwLa+L_rysGFSCREYvhzcTXqQGCw@mail.gmail.com>
 <87o8v5ukgb.fsf@ambrevar.xyz>
 <CAJ3okZ1DLnh-aFoR3CiyiL8iF040s8iZ8B1iGotZ4dKx6ea4AA@mail.gmail.com>
 <87d0blhr9s.fsf@ambrevar.xyz>
 <CAJ3okZ2bU4FDrU6rUXtcYWv+GUbTM76rpDXZSYnbRuNvZqZvnA@mail.gmail.com>
 <20200116190644.uytvzvypuvdwh2iq@n0>
 <CAJ3okZ23X5Y10XN+gReoiyM+766BUMNW4BqCWQqHHpMr6piMRA@mail.gmail.com>
 <87d0bfrxr1.fsf@gnu.org>
Mime-Version: 1.0
Content-Type: multipart/signed; boundary="=-=-=";
 micalg=pgp-sha256; protocol="application/pgp-signature"
Return-path: <guix-devel-bounces+gcggd-guix-devel=m.gmane-mx.org@gnu.org>
Received: from eggs.gnu.org ([2001:470:142:3::10]:53712)
 by lists.gnu.org with esmtp (Exim 4.90_1)
 (envelope-from <mail@ambrevar.xyz>) id 1itT3B-00005h-BD
 for guix-devel@gnu.org; Mon, 20 Jan 2020 04:08:53 -0500
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
 (envelope-from <mail@ambrevar.xyz>) id 1itT37-0001rJ-7u
 for guix-devel@gnu.org; Mon, 20 Jan 2020 04:08:48 -0500
In-Reply-To: <87d0bfrxr1.fsf@gnu.org>
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: <https://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-mx.org@gnu.org
Sender: "Guix-devel"
 <guix-devel-bounces+gcggd-guix-devel=m.gmane-mx.org@gnu.org>
To: Ludovic =?utf-8?Q?Court=C3=A8s?= <ludo@gnu.org>, zimoun <zimon.toutoune@gmail.com>
Cc: Guix Devel <guix-devel@gnu.org>

--=-=-=
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: quoted-printable

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

> I agree.  =E2=80=98package-input-rewriting=E2=80=99 gives us almost what =
you want, with
> the limitation that implicit inputs are ignored (which is a good thing
> sometimes, and a problem in cases where you want to experiment with
> toolchains, as you write).
>
> What we=E2=80=99d need is a variant of =E2=80=98package-input-rewriting=
=E2=80=99 that somehow
> walks through implicit dependencies.  It could do that by changing the
> build system, I guess.

To clarify, this does not cover the extent of what "parameters" could
do, since parameters are not just about input rewriting.

What do you think of my other answer on using parameters to tweak the
`arguments' field?  (E.g. the "python" argument for the python-build-system=
.)

=2D-=20
Pierre Neidhardt
https://ambrevar.xyz/

--=-=-=
Content-Type: application/pgp-signature; name="signature.asc"

-----BEGIN PGP SIGNATURE-----

iQEzBAEBCAAdFiEEUPM+LlsMPZAEJKvom9z0l6S7zH8FAl4lbhkACgkQm9z0l6S7
zH9Qpwf+N+MnmJAWJlKGS33+TQnqVlpjkj/H46lt0K+2fbaG37wHMyULeSDc+UK8
oftTNpsjdy6XKbV2J3G2nIFVGceIyjT/HJSF10j06KGa/+UrJRZlZ2zJV2lRQ7X5
Z6NMfYo9bK2whNfU6zDntmYgg+M/+tcgbOatUsyOatzU9FwElSicw0Vpb6QOddoB
GIKBwxhveGA1V39XLalZjLiOLIAk9+kWLnHJ8Sjf6h3NMBUnVpLNJacA1DAdFkf5
IQbqnY1eUyh0dJE4StaqQI05vhfdMeAh906Td9xCU87TNK1Ywd85tYiaFBXHGCkM
4DK79xV7ZtEH31yTt1T5G5IqFzXRFw==
=crpp
-----END PGP SIGNATURE-----
--=-=-=--