From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: "Eric S. Raymond" Newsgroups: gmane.emacs.devel Subject: Re: DVCS design philosophy Date: Thu, 30 Oct 2014 13:41:56 -0400 Organization: Eric Conspiracy Secret Labs Message-ID: <20141030174156.GA24193@thyrsus.com> References: <20141029141216.7abbbc0d@anarchist.wooz.org> <20141029222946.GA13673@thyrsus.com> <545178BE.2050505@cs.ucla.edu> <87k33i9fgi.fsf_-_@violet.siamics.net> <20141030083156.GA2683@thyrsus.com> <20141030153304.GC12453@thyrsus.com> Reply-To: esr@thyrsus.com NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: ger.gmane.org 1414773840 21732 80.91.229.3 (31 Oct 2014 16:44:00 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 31 Oct 2014 16:44:00 +0000 (UTC) Cc: Ivan Shmakov , emacs-devel@gnu.org To: Stefan Monnier Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Fri Oct 31 17:43:53 2014 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1XkFIn-0004g6-Fk for ged-emacs-devel@m.gmane.org; Fri, 31 Oct 2014 17:43:53 +0100 Original-Received: from localhost ([::1]:39193 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XkFIn-0005uc-2j for ged-emacs-devel@m.gmane.org; Fri, 31 Oct 2014 12:43:53 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:50641) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XkEFq-0005Z7-5x for emacs-devel@gnu.org; Fri, 31 Oct 2014 11:37:30 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XjtjR-0001qP-Jz for emacs-devel@gnu.org; Thu, 30 Oct 2014 13:42:06 -0400 Original-Received: from static-71-162-243-5.phlapa.fios.verizon.net ([71.162.243.5]:40834 helo=snark.thyrsus.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XjtjR-0001p9-F8 for emacs-devel@gnu.org; Thu, 30 Oct 2014 13:41:57 -0400 Original-Received: by snark.thyrsus.com (Postfix, from userid 1000) id C71013834D9; Thu, 30 Oct 2014 13:41:56 -0400 (EDT) Content-Disposition: inline In-Reply-To: X-Eric-Conspiracy: There is no conspiracy User-Agent: Mutt/1.5.21 (2010-09-15) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 71.162.243.5 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:176084 Archived-At: Stefan Monnier : > My view on this is that we need to distinguish the tree from the ways to > get to it. So, the revision would get a hash which only depends on the > files in it and not on the commit message, nor the author, nor the > parent revisions. Then the arcs between revisions (i.e. the patches) > would have their own hash which would take into account the author, the > commit message, the date, and of course the hashes of the "from" and > "to" revisions. This sounds rather like descriptions I have read of darcs. It matches up, anyway, with the darcs line on being "patch oriented". It is too bad that project stalled out; I found their theoretical talk about patch algebra and commutativity very interesting. Alas, the FAQ suggests that they ran into a fundamental problem with the theory thst they were unable to solve. -- Eric S. Raymond