From mboxrd@z Thu Jan 1 00:00:00 1970 From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=) Subject: Re: Rollback problems Date: Fri, 25 Jan 2013 15:53:09 +0100 Message-ID: <87ip6ll3fu.fsf@gnu.org> References: <201301232148.46744.andreas@enge.fr> <87mwvzsdzt.fsf@gnu.org> <201301240017.55013.andreas@enge.fr> <87mwvystku.fsf@gnu.org> <87bocel2vo.fsf@gnu.org> <87622mhthi.fsf@karetnikov.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Return-path: Received: from eggs.gnu.org ([208.118.235.92]:42078) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Tykeb-0001Ot-Nt for bug-guix@gnu.org; Fri, 25 Jan 2013 09:53:24 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1TykeV-0000KH-FL for bug-guix@gnu.org; Fri, 25 Jan 2013 09:53:17 -0500 Received: from mail1-relais-roc.national.inria.fr ([192.134.164.82]:47247) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TykeV-0000Is-9J for bug-guix@gnu.org; Fri, 25 Jan 2013 09:53:11 -0500 In-Reply-To: <87622mhthi.fsf@karetnikov.org> (Nikita Karetnikov's message of "Thu, 24 Jan 2013 21:44:51 -0500") List-Id: Bug reports for GNU Guix List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-guix-bounces+gcggb-bug-guix=m.gmane.org@gnu.org Sender: bug-guix-bounces+gcggb-bug-guix=m.gmane.org@gnu.org To: Nikita Karetnikov Cc: bug-guix@gnu.org Nikita Karetnikov skribis: >> 3. More generally, should the history of generations be linear, or >> should it be a DAG like Git commits? > > If the latter is the case, then we can probably use a simple tree. Here > is a related link: [1]. Right, if we went for a tree, each manifest could carry some sort of a zipper that would then allow us to know how to go back from there. >> Regarding (3), it seems that a linear history not only simplifies the >> implementation, but also the user interface, while covering most >> practical use cases. > > I agree. Great. It really seems simpler to use a linear history. Thanks, Ludo=E2=80=99.