From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from eggs.gnu.org ([2001:4830:134:3::10]:53621)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <Debian-debbugs@debbugs.gnu.org>) id 1ero4N-0008Ci-Ra
	for guix-patches@gnu.org; Fri, 02 Mar 2018 12:02:08 -0500
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <Debian-debbugs@debbugs.gnu.org>) id 1ero4J-0003b9-2h
	for guix-patches@gnu.org; Fri, 02 Mar 2018 12:02:07 -0500
Received: from debbugs.gnu.org ([208.118.235.43]:33596)
	by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16)
	(Exim 4.71) (envelope-from <Debian-debbugs@debbugs.gnu.org>)
	id 1ero4I-0003ai-UX
	for guix-patches@gnu.org; Fri, 02 Mar 2018 12:02:03 -0500
Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2)
	(envelope-from <Debian-debbugs@debbugs.gnu.org>) id 1ero4I-0005h7-EQ
	for guix-patches@gnu.org; Fri, 02 Mar 2018 12:02:02 -0500
Subject: [bug#30657] Add support for file-like objects to the Prosody
	configuration
Resent-Message-ID: <handler.30657.B30657.152001006421816@debbugs.gnu.org>
From: ludo@gnu.org (Ludovic =?UTF-8?Q?Court=C3=A8s?=)
References: <877eqwhhuy.fsf@lassieur.org>
Date: Fri, 02 Mar 2018 18:00:58 +0100
In-Reply-To: <877eqwhhuy.fsf@lassieur.org> ("=?UTF-8?Q?Cl=C3=A9ment?=
	Lassieur"'s message of "Wed, 28 Feb 2018 23:25:25 +0100")
Message-ID: <87o9k6csz9.fsf@gnu.org>
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: quoted-printable
List-Id: <guix-patches.gnu.org>
List-Unsubscribe: <https://lists.gnu.org/mailman/options/guix-patches>,
	<mailto:guix-patches-request@gnu.org?subject=unsubscribe>
List-Archive: <http://lists.gnu.org/archive/html/guix-patches/>
List-Post: <mailto:guix-patches@gnu.org>
List-Help: <mailto:guix-patches-request@gnu.org?subject=help>
List-Subscribe: <https://lists.gnu.org/mailman/listinfo/guix-patches>,
	<mailto:guix-patches-request@gnu.org?subject=subscribe>
Errors-To: guix-patches-bounces+kyle=kyleam.com@gnu.org
Sender: "Guix-patches" <guix-patches-bounces+kyle=kyleam.com@gnu.org>
To: =?UTF-8?Q?Cl=C3=A9ment?= Lassieur <clement@lassieur.org>
Cc: 30657@debbugs.gnu.org

Hello,

Cl=C3=A9ment Lassieur <clement@lassieur.org> skribis:

> These patches add support for file-like objects to the Prosody service
> configuration.  The idea is to replace this mechanism (which is used
> very often):
>
>     (plain-file
>       (with-output-to-string
>          ...
>          (format #t ...)
>          ...))
>
> with this one:
>
>     (mixed-text-file
>       (flatten
>         (with-tokens-to-list
>            ...
>            (push-tokens ...)
>            ...))
>
> The point is that tokens don't have to be strings.

That=E2=80=99s a great improvement.

I=E2=80=99m wondering if we could somehow avoid building the token list in =
this
imperative manner.

We could arrange to procedure a string-value gexp, i.e.:

  #~(string-append #$a #$b #$c)

What if each =E2=80=98serialize-*=E2=80=99 procedure produce a string-value=
d gexp that
can be directly spliced in this big #~(string-append =E2=80=A6)?

That would require changing =E2=80=98serialize-*=E2=80=99 to return a value=
 (currently
their return value is ignored.)  WDYT?  Doable?  Pointless?

Thanks,
Ludo=E2=80=99.