From mboxrd@z Thu Jan 1 00:00:00 1970 From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=) Subject: Re: reproducibility Date: Sun, 10 Jan 2016 21:49:27 +0100 Message-ID: <874mel2m94.fsf@gnu.org> References: Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Return-path: Received: from eggs.gnu.org ([2001:4830:134:3::10]:48967) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aIMvc-0003OG-Rr for guix-devel@gnu.org; Sun, 10 Jan 2016 15:49:33 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aIMvZ-0005Jt-Mx for guix-devel@gnu.org; Sun, 10 Jan 2016 15:49:32 -0500 In-Reply-To: (Federico Beffa's message of "Sat, 9 Jan 2016 11:53:27 +0100") 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: Federico Beffa Cc: Guix-devel Federico Beffa skribis: > I've noticed that a derivation is a function of the order of the > inputs. As an example, the following two input orders give rise to two > distinct derivations: > > A) > > (inputs > `(("texlive" ,texlive) > ("texinfo" ,texinfo) > ("m4" ,m4) > ("libx11" ,libx11)) > > B) > (inputs > `(("texinfo" ,texinfo) > ("texlive" ,texlive) > ("m4" ,m4) > ("libx11" ,libx11)) > > Is this intentional? Yes. There are several places where order matters, most importantly search paths, and these are computed from the input lists. Ludo=E2=80=99.