From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from pigeon.gentoo.org ([208.92.234.80] helo=lists.gentoo.org)
	by finch.gentoo.org with esmtp (Exim 4.60)
	(envelope-from <gentoo-science+bounces-1200-garchives=archives.gentoo.org@lists.gentoo.org>)
	id 1Olkll-0003Oq-5w
	for garchives@archives.gentoo.org; Wed, 18 Aug 2010 15:41:37 +0000
Received: from pigeon.gentoo.org (localhost [127.0.0.1])
	by pigeon.gentoo.org (Postfix) with SMTP id BB11DE066B;
	Wed, 18 Aug 2010 15:41:00 +0000 (UTC)
Received: from fsm1.ukr.net (fsm1.ukr.net [195.214.192.23])
	by pigeon.gentoo.org (Postfix) with ESMTP id 89FD4E066B
	for <gentoo-science@lists.gentoo.org>; Wed, 18 Aug 2010 15:41:00 +0000 (UTC)
Received: from [79.135.196.121] (helo=Ganymede)
	by fsm1.ukr.net with esmtpsa ID 1Olkl9-000LYa-Ig
	; Wed, 18 Aug 2010 18:40:59 +0300
Date: Wed, 18 Aug 2010 18:42:08 +0300
From: v_2e@ukr.net
To: gentoo-science@lists.gentoo.org
Subject: Re: [gentoo-science] [sage-on-gentoo] Sage-4.5.2 build problem and
 a "run-time" errors.
Message-Id: <20100818184208.9b25afb0.v_2e@ukr.net>
In-Reply-To: <201008180831.11158.cschwan@students.uni-mainz.de>
References: <20100811091847.69233077.v_2e@ukr.net>
	<201008110946.07612.cschwan@students.uni-mainz.de>
	<20100818083311.f2671421.v_2e@ukr.net>
	<201008180831.11158.cschwan@students.uni-mainz.de>
X-Mailer: Sylpheed 3.0.3 (GTK+ 2.20.1; x86_64-pc-linux-gnu)
Precedence: bulk
List-Post: <mailto:gentoo-science@lists.gentoo.org>
List-Help: <mailto:gentoo-science+help@lists.gentoo.org>
List-Unsubscribe: <mailto:gentoo-science+unsubscribe@lists.gentoo.org>
List-Subscribe: <mailto:gentoo-science+subscribe@lists.gentoo.org>
List-Id: Gentoo Linux mail <gentoo-science.gentoo.org>
X-BeenThere: gentoo-science@lists.gentoo.org
Reply-to: gentoo-science@lists.gentoo.org
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
X-Archives-Salt: 66be4739-121b-4cd3-8156-0d638b28d784
X-Archives-Hash: e184313700d61cb77e691fa66f789490

Hello again!

On Wed, 18 Aug 2010 08:31:11 +0200
Christopher Schwan <cschwan@students.uni-mainz.de> wrote:
> 
> Thats _really_ strange, but one exclamation mark should work, too. 
  It actually does with ONE exclamation mark, but not with two.
>I have fixed 
> that in my recent commit, but still would like to know why it doesnt work with 
> two exclamation marks. 
  I know almost nothing about writing ebuilds (I have written just few
of them), but maybe two exclamation marks mean "ouble logical "not" (NOT
NOT), inverting the meaning of this blocker?
For example, I can read that string as follows:
       DEPEND="!<sci-mathematics/sage-4.5.2"
       "sage-baselayout-4.5.2 depends on (NOT less than
sci-mathematics/sage-4.5.2)"
With two exclamation marks I could read this string different:
"sage-baselayout-4.5.2 depends on (NOT (NOT less than
sci-mathematics/sage-4.5.2))". The last one is equivalent to
"<sci-mathematics/sage-4.5.2" from this point of view.
  But maybe I'm wrong and all this is a complete nonsense. :)

> Anyway, with 4.5.3 I am going to remove the blockers so we 
> do not have to worry about them ;)
> 
  In such case we definitely have nothing to worry about.

Regards,
Vladimir.

----- 
 <v_2e@ukr.net>