From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: Re: What for 0.5?
Date: Mon, 11 Nov 2013 21:35:12 +0100
Message-ID: <87a9haisn3.fsf@gnu.org>
References: <87eh6x401c.fsf@gnu.org> <527934B3.2050106@gmail.com>
	<877gcllm0l.fsf@gnu.org> <20131111175017.GA12274@debian>
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]:45060)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <ludo@gnu.org>) id 1VfyCe-000233-5l
	for guix-devel@gnu.org; Mon, 11 Nov 2013 15:35:25 -0500
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <ludo@gnu.org>) id 1VfyCY-0007HJ-SX
	for guix-devel@gnu.org; Mon, 11 Nov 2013 15:35:20 -0500
Received: from mail3-relais-sop.national.inria.fr ([192.134.164.104]:10663)
	by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from <ludo@gnu.org>)
	id 1VfyCY-0007Gl-MA
	for guix-devel@gnu.org; Mon, 11 Nov 2013 15:35:14 -0500
In-Reply-To: <20131111175017.GA12274@debian> (Andreas Enge's message of "Mon,
	11 Nov 2013 18:50:17 +0100")
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-bounces+gcggd-guix-devel=m.gmane.org@gnu.org
To: Andreas Enge <andreas@enge.fr>
Cc: guix-devel@gnu.org

Andreas Enge <andreas@enge.fr> skribis:

> On Wed, Nov 06, 2013 at 02:04:10PM +0100, Ludovic Court=C3=A8s wrote:
>>   =E2=80=A2 Use a hack like that of Nixpkgs, which systematically copies=
 and
>>     rebuilds (with glib-compile-schemas) the =E2=80=9Cstandard=E2=80=9D =
schemas: see
>>     =E2=80=98doCompileSchemas=E2=80=99 at
>>     <https://github.com/NixOS/nixpkgs/blob/master/pkgs/desktops/gnome-3/=
core/gsettings-desktop-schemas/default.nix>
>>     and its use at
>>     <https://github.com/NixOS/nixpkgs/blob/master/pkgs/desktops/gnome-3/=
core/evince/default.nix>.
>>=20
>> The latter seems reasonable, and fairly easy to do.
>
> Could you elaborate on what is happening there? It looks rather mysterious
> to me.

There=E2=80=99s this snippet:

--8<---------------cut here---------------start------------->8---
doCompileSchemas =3D ''=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
  for pkg in "${gsettings_desktop_schemas}" "${gtk3}"; do=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
    cp -s $pkg/share/glib-2.0/schemas/*.gschema.xml $out/share/glib-2.0/sch=
emas/
  done=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20
  ${glib}/bin/glib-compile-schemas $out/share/glib-2.0/schemas/=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20
'';=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20
--8<---------------cut here---------------end--------------->8---

that gets inserted in the post-install phase of Evince and similar
programs.

In addition, Evince & co. have their $XDG_DATA_DIRS that refers to those
schemas:

--8<---------------cut here---------------start------------->8---
     wrapProgram "$out/bin/evince" \=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20
       --prefix XDG_DATA_DIRS : "${shared_mime_info}/share:$out/share"=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20
--8<---------------cut here---------------end--------------->8---

In effect, it makes sure that all the standard schemas are available
along with each application that needs it.

Ludo=E2=80=99.