From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: Re: Extending 'guix download'
Date: Mon, 02 Feb 2015 23:00:39 +0100
Message-ID: <871tm8t1mg.fsf@gnu.org>
References: <87pp9tjrr7.fsf@izanagi.i-did-not-set--mail-host-address--so-tickle-me>
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]:52715)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <ludo@gnu.org>) id 1YIP36-0002BS-7P
	for guix-devel@gnu.org; Mon, 02 Feb 2015 17:00:57 -0500
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <ludo@gnu.org>) id 1YIP31-0000zq-54
	for guix-devel@gnu.org; Mon, 02 Feb 2015 17:00:51 -0500
Received: from fencepost.gnu.org ([2001:4830:134:3::e]:49175)
	by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from <ludo@gnu.org>)
	id 1YIP31-0000zm-2N
	for guix-devel@gnu.org; Mon, 02 Feb 2015 17:00:47 -0500
In-Reply-To: <87pp9tjrr7.fsf@izanagi.i-did-not-set--mail-host-address--so-tickle-me>
	(David Thompson's message of "Sun, 01 Feb 2015 15:34:04 -0500")
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: David Thompson <dthompson2@worcester.edu>
Cc: guix-devel@gnu.org

David Thompson <dthompson2@worcester.edu> skribis:

> I'm looking for thoughts about what the CLI should look like for an
> improved 'guix download' that is capable of downloading git repos, svn
> repos, etc. in addition to files over HTTP.

(It handles any scheme supported by =E2=80=98url-fetch=E2=80=99, which incl=
udes
mirror:// etc.)

> There could be to be additional context-sensitive switches to specify
> details beyond a URL.  For example, git repos need a commit SHA.
>
>     guix download --method=3Dgit --commit=3D74217b9 git@gitorious.org/foo=
/foo.git
>
> Or perhaps more flags aren't needed and we can use a specific order of
> arguments:
>
>     guix download --method=3Dgit git@gitorious.org/foo/foo.git 74217b9
>
> Or we could create subcommands for each download method:
>
>     guix download git git@gitorious.org/foo/foo.git 74217b9

That would be useful.  Option #3 is too verbose IMO.  I have a slight
preference for #2.

The question is more whether the implementation could automatically map
command-line arguments to objects (=E2=80=98git-reference=E2=80=99, =E2=80=
=98svn-reference=E2=80=99,
etc.), or if we=E2=80=99d rather go for something custom.

The former might be nice but might result in a clumsy CLI; the latter is
less elegant but might allow for a nicer CLI.

WDYT?

Ludo=E2=80=99.