From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gentoo-user+bounces-184617-garchives=archives.gentoo.org@lists.gentoo.org>
Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80])
	(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
	(No client certificate requested)
	by finch.gentoo.org (Postfix) with ESMTPS id 8B6BA138334
	for <garchives@archives.gentoo.org>; Fri, 10 Aug 2018 15:00:42 +0000 (UTC)
Received: from pigeon.gentoo.org (localhost [127.0.0.1])
	by pigeon.gentoo.org (Postfix) with SMTP id 68C0DE08C8;
	Fri, 10 Aug 2018 15:00:35 +0000 (UTC)
Received: from blaine.gmane.org (unknown [195.159.176.226])
	(using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits))
	(No client certificate requested)
	by pigeon.gentoo.org (Postfix) with ESMTPS id E7645E087E
	for <gentoo-user@lists.gentoo.org>; Fri, 10 Aug 2018 15:00:34 +0000 (UTC)
Received: from list by blaine.gmane.org with local (Exim 4.84_2)
	(envelope-from <lnx-gentoo-user@m.gmane.org>)
	id 1fo8rt-0002hP-Qk
	for gentoo-user@lists.gentoo.org; Fri, 10 Aug 2018 16:58:21 +0200
X-Injected-Via-Gmane: http://gmane.org/
To: gentoo-user@lists.gentoo.org
From: Nikos Chantziaras <realnc@gmail.com>
Subject: [gentoo-user] Re: --depclean and sys-devel/gcc
Date: Fri, 10 Aug 2018 18:00:31 +0300
Message-ID: <pkk967$9nb$1@blaine.gmane.org>
References: <87r2j7szp8.fsf@nyu.edu>
 <a9926d88-272a-0073-2728-909f685c4ff9@gentoo.org> <87bmaaiamy.fsf@nyu.edu>
Precedence: bulk
List-Post: <mailto:gentoo-user@lists.gentoo.org>
List-Help: <mailto:gentoo-user+help@lists.gentoo.org>
List-Unsubscribe: <mailto:gentoo-user+unsubscribe@lists.gentoo.org>
List-Subscribe: <mailto:gentoo-user+subscribe@lists.gentoo.org>
List-Id: Gentoo Linux mail <gentoo-user.gentoo.org>
X-BeenThere: gentoo-user@lists.gentoo.org
Reply-to: gentoo-user@lists.gentoo.org
Mime-Version: 1.0
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding: 7bit
X-Complaints-To: usenet@blaine.gmane.org
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101
 Thunderbird/52.9.1
In-Reply-To: <87bmaaiamy.fsf@nyu.edu>
Content-Language: en-US
X-Archives-Salt: 361766c6-fe42-466f-98ed-74169937a8ab
X-Archives-Hash: 006a39c216c86abb98533000922c15fc

On 10/08/18 17:01, allan gottlieb wrote:
> If I now upgrade with
> 
>      gcc-config x86_64-pc-linux-gnu-7.3.0
>      env-update && source /etc/profile
>      emerge --ask --oneshot sys-devel/libtool
> 
> must I do a world update --emptytree as when converting to the 13.0
> profile.

It's recommended, but not something you have to do immediately. It's 
best to do it when you don't need the machine (like overnight), but if 
you happen to be using it while the world rebuild is going on, use these 
in your make.conf:

PORTAGE_NICENESS=19
PORTAGE_IONICE_COMMAND="sh -c \"schedtool -D \${PID}; ionice -c 3 -p 
\${PID}\""

(Make sure sys-process/schedtool is installed.)

This makes sure the emerge process does not slow down your normal use of 
the machine.