From mboxrd@z Thu Jan 1 00:00:00 1970 From: Leo Famulari Subject: Re: [v3] Erlang Date: Mon, 4 Apr 2016 12:50:12 -0400 Message-ID: <20160404165012.GA11014@jasmine> References: <20160401081911.GA16368@thebird.nl> <20160402022054.GA17152@jasmine> <8737r2bcyv.fsf@gnu.org> <20160404033924.GA28101@jasmine> <20160404082802.GA29212@thebird.nl> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from eggs.gnu.org ([2001:4830:134:3::10]:53486) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1an7hn-0006C0-Se for guix-devel@gnu.org; Mon, 04 Apr 2016 12:50:25 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1an7hi-0004Q7-9l for guix-devel@gnu.org; Mon, 04 Apr 2016 12:50:23 -0400 Received: from out5-smtp.messagingengine.com ([66.111.4.29]:59614) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1an7hi-0004Pn-6Q for guix-devel@gnu.org; Mon, 04 Apr 2016 12:50:18 -0400 Content-Disposition: inline In-Reply-To: <20160404082802.GA29212@thebird.nl> List-Id: "Development of GNU Guix and the GNU System distribution." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-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: Pjotr Prins Cc: guix-devel@gnu.org On Mon, Apr 04, 2016 at 10:28:02AM +0200, Pjotr Prins wrote: > On Sun, Apr 03, 2016 at 11:39:24PM -0400, Leo Famulari wrote: > > Debian's package exhibits this problem. The timestamps are generated in > > the following places in the source code. I don't know how to approach > > this problem. > > > > lib/kernel/test/global_SUITE_data/global_trace.erl: io:format("The trace was generated at ~p~n", [EndTime]), > > lib/reltool/bin/reltool.escript: lists:flatten(io_lib:format("%% ~s generated at ~w ~w\n~p.\n\n", > > lib/reltool/src/reltool_server.erl: IoList = io_lib:format("%% config generated at ~w ~w\n~p.\n\n", > > lib/reltool/src/reltool_target.erl: RelIoList = io_lib:format("%% rel generated at ~w ~w\n~p.\n\n", > > lib/reltool/src/reltool_target.erl: ScriptIoList = io_lib:format("%% script generated at ~w ~w\n~p.\n\n", > > lib/reltool/src/reltool_target.erl: AppIoList = io_lib:format("%% app generated at ~w ~w\n~p.\n\n", > > lib/reltool/src/reltool_target.erl: AppIoList = io_lib:format("%% app generated at ~w ~w\n~p.\n\n", > > lib/runtime_tools/src/erts_alloc_config.erl: "generated at ~w-~2..0w-~2..0w ~2..0w:~2..0w.~2..0w by " > > lib/sasl/src/systools_make.erl: io:format(Fd, "%% script generated at ~w ~w\n~p.\n", > > lib/wx/src/gen/gl.erl:%% The program object's information log is updated and the program is generated at the time > > If there is no easy work around I suggest simply patching them. Fortunately > the Erlang compiler does not change much at this level. The ideal solution would be to use the value of the environment variable SOURCE_DATE_EPOCH if it is set, and else to behave as it does now. > We can also contact Joe Armstrong, the author of Erlang, to discuss > this point. He appears to be approachable. I am sure he is open to > the idea of deterministic builds in a deterministic build system ;) I could go to the Erlang IRC channel or forums (whatever they use) and ask for advice. Since you are actually using Erlang, I think you would be the better person to contact Joe Armstrong himself, if we decide to do that.