From mboxrd@z Thu Jan  1 00:00:00 1970
From: =?utf-8?B?5a6L5paH5q2m?= <iyzsong@gmail.com>
Subject: Re: Reproducible profiles
Date: Sat, 16 May 2015 19:35:18 +0800
Message-ID: <87a8x4dabt.fsf@gmail.com>
References: <87pp62iqmn.fsf@fsf.org> <87egmgu609.fsf@gnu.org>
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]:55741)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <iyzsong@gmail.com>) id 1YtaMd-0006gz-3u
	for guix-devel@gnu.org; Sat, 16 May 2015 07:34:43 -0400
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <iyzsong@gmail.com>) id 1YtaMc-0000P4-69
	for guix-devel@gnu.org; Sat, 16 May 2015 07:34:43 -0400
In-Reply-To: <87egmgu609.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: <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: Ludovic =?utf-8?Q?Court=C3=A8s?= <ludo@gnu.org>, David Thompson <dthompson2@worcester.edu>
Cc: guix-devel@gnu.org

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

> David Thompson <dthompson2@worcester.edu> skribis:
>
>> Lately I've been wanting to version control the list of packages that I
>> install in my user profile so that I can sync it amongst many machines.
>> So, I took a stab at adding a new '--apply' option to 'guix package'
>> that reads in a package list from a Scheme file and creates a new
>> generation of the profile with only those packages are installed.
>> Here's an example configuration:
>>
>>     (use-modules (gnu))
>>     (use-package-modules base less guile emacs admin ruby mail pumpio ma=
n)
>>=20=20=20=20=20
>>     (list ruby
>>           coreutils
>>           less
>>           man-db
>>           notmuch
>>           guile-2.0
>>           emacs
>>           dmd
>>           offlineimap
>>           pumpa)
>
> Yes, that sounds very useful.
>
> As usual though, there=E2=80=99s the issue of multiple-output packages.  =
The
> above snippet is nice, but doesn=E2=80=99t allow you to specify a particu=
lar
> output of a package.
>
> What about instead requiring people to return a manifest:
>
>   (use-modules (guix profiles))
>   (use-package-modules base emacs guile)
>
>   (manifest (cons (package->manifest-entry gcc-toolchain "debug")
>                   (map package->entry
>                        (list gcc-toolchain emacs guile-2.0))))
>
> That means we=E2=80=99ll have to document (guix profiles).
>
> It=E2=80=99s more verbose than what you suggest, though.  If you insist ;=
-), we
> could allow a list of packages instead of a manifest, though I=E2=80=99d =
prefer
> not to do that.
>
> WDYT?
>
+1 for return 'manifest', in a same way as 'operating-system'.
And how about use specification instead of package, so I can:

  (manifest
    (map package-specification->manifest-entry
         '("emacs"
           "font-adobe-source-han-sans:cn")))