From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hartmut Goebel Subject: Specifying and build output separately? Date: Sat, 15 Oct 2016 10:06:34 +0200 Message-ID: <118ccdd8-3b7f-2b35-5f5e-69375c1a4565@crazy-compilers.com> 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]:49127) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bvJzR-0006Yx-67 for guix-devel@gnu.org; Sat, 15 Oct 2016 04:06:46 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bvJzM-0001Pk-Uq for guix-devel@gnu.org; Sat, 15 Oct 2016 04:06:44 -0400 Received: from mail-out.m-online.net ([212.18.0.10]:35661) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1bvJzM-0001PN-On for guix-devel@gnu.org; Sat, 15 Oct 2016 04:06:40 -0400 Received: from frontend01.mail.m-online.net (unknown [192.168.8.182]) by mail-out.m-online.net (Postfix) with ESMTP id 3swxrD4wCXz3hk1x for ; Sat, 15 Oct 2016 10:06:36 +0200 (CEST) Received: from localhost (dynscan1.mnet-online.de [192.168.6.68]) by mail.m-online.net (Postfix) with ESMTP id 3swxrD3tQxzvkpl for ; Sat, 15 Oct 2016 10:06:36 +0200 (CEST) Received: from mail.mnet-online.de ([192.168.8.182]) by localhost (dynscan1.mail.m-online.net [192.168.6.68]) (amavisd-new, port 10024) with ESMTP id nz9dFk-DKmdB for ; Sat, 15 Oct 2016 10:06:35 +0200 (CEST) Received: from hermia.goebel-consult.de (ppp-188-174-156-155.dynamic.mnet-online.de [188.174.156.155]) (using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) by mail.mnet-online.de (Postfix) with ESMTPS for ; Sat, 15 Oct 2016 10:06:35 +0200 (CEST) Received: from thisbe.goebel-consult.de (hermia.goebel-consult.de [192.168.110.7]) by hermia.goebel-consult.de (Postfix) with ESMTP id 07A4560375 for ; Sat, 15 Oct 2016 10:06:35 +0200 (CEST) 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" To: Guix-devel Hi, we have several cyclic dependencies due to e.g. packages depending on each other only for building the documentation. Examples are numpy and matpltlib. So I wonder it it would be possible to to something like this: (define-public numpy:doc (inherit numpy) (name "numpy:doc") (outputs "doc") (inputs =E2=80=A6 matplotlib =E2=80=A6) (=E2=80=A6 modify-phases =E2=80=A6)) This would at least help breaking cycles where only specific the documentation is effected. It will still not solve more complex situation we have for python--tk--libxck--python, i assume. But maybe this could be generalized. --=20 Regards Hartmut Goebel | Hartmut Goebel | h.goebel@crazy-compilers.com | | www.crazy-compilers.com | compilers which you thought are impossible |