From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mp1 ([2001:41d0:2:4a6f::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by ms11 with LMTPS id 2LQRDMe78F49ZQAA0tVLHw (envelope-from ) for ; Mon, 22 Jun 2020 14:10:15 +0000 Received: from aspmx1.migadu.com ([2001:41d0:2:4a6f::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by mp1 with LMTPS id oAPSB8e78F6VSQAAbx9fmQ (envelope-from ) for ; Mon, 22 Jun 2020 14:10:15 +0000 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by aspmx1.migadu.com (Postfix) with ESMTPS id AD7A89402A2 for ; Mon, 22 Jun 2020 14:10:14 +0000 (UTC) Received: from localhost ([::1]:45284 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jnN9J-0006ww-IJ for larch@yhetil.org; Mon, 22 Jun 2020 10:10:13 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:33132) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jnN7I-00041n-MM for guix-devel@gnu.org; Mon, 22 Jun 2020 10:08:08 -0400 Received: from mail-out.m-online.net ([212.18.0.9]:44108) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jnN7G-0001Ui-Df for guix-devel@gnu.org; Mon, 22 Jun 2020 10:08:08 -0400 Received: from frontend01.mail.m-online.net (unknown [192.168.8.182]) by mail-out.m-online.net (Postfix) with ESMTP id 49rB820jfyz1qrfY for ; Mon, 22 Jun 2020 16:08:02 +0200 (CEST) Received: from localhost (dynscan1.mnet-online.de [192.168.6.70]) by mail.m-online.net (Postfix) with ESMTP id 49rB820db8z1qqlF for ; Mon, 22 Jun 2020 16:08:02 +0200 (CEST) X-Virus-Scanned: amavisd-new at mnet-online.de Received: from mail.mnet-online.de ([192.168.8.182]) by localhost (dynscan1.mail.m-online.net [192.168.6.70]) (amavisd-new, port 10024) with ESMTP id SUZ_V3IM_5lD for ; Mon, 22 Jun 2020 16:08:00 +0200 (CEST) Received: from hermia.goebel-consult.de (ppp-188-174-63-16.dynamic.mnet-online.de [188.174.63.16]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.mnet-online.de (Postfix) with ESMTPS for ; Mon, 22 Jun 2020 16:08:00 +0200 (CEST) Received: from lenashee.goebel-consult.de (lenashee.goebel-consult.de [192.168.110.2]) by hermia.goebel-consult.de (Postfix) with ESMTP id B54DE601D1 for ; Mon, 22 Jun 2020 16:08:00 +0200 (CEST) To: guix-devel From: Hartmut Goebel Subject: Derivation is missing output Organization: crazy-compilers.com Message-ID: <97123365-9ebd-c7dd-a48b-97e5f041d454@crazy-compilers.com> Date: Mon, 22 Jun 2020 16:07:58 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.8.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Content-Language: en-US Received-SPF: none client-ip=212.18.0.9; envelope-from=h.goebel@crazy-compilers.com; helo=mail-out.m-online.net X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/22 10:08:02 X-ACL-Warn: Detected OS = Linux 3.11 and newer X-Spam_score_int: -25 X-Spam_score: -2.6 X-Spam_bar: -- X-Spam_report: (-2.6 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_NONE=0.001, URIBL_BLOCKED=0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: guix-devel@gnu.org X-Mailman-Version: 2.1.23 Precedence: list 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+larch=yhetil.org@gnu.org Sender: "Guix-devel" X-Scanner: scn0 Authentication-Results: aspmx1.migadu.com; dkim=none; dmarc=none; spf=pass (aspmx1.migadu.com: domain of guix-devel-bounces@gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=guix-devel-bounces@gnu.org X-Spam-Score: -1.01 X-TUID: iCGbJwrSenay Hi, I'm still working on the download and importer for hex.pm and the rebar3 build-system for Erlang. So far I made good progress, but now I stepped over a curious issue: The downloader is modeled like the one for git, bzr and hg, creating a fixed script controlled by environment variables. The script is created as expected. But the script is never run. After some debugging, I discovered that the source package's .drv file does not define any output: Derivce([],[…inputs…]) What can be the reason for this? Some background (the whole source can be found at https://gitlab.digitalcourage.de/htgoebel/guix/-/tree/HG-rebar-build-system):     (source      (origin        (method hexpm-fetch)        (uri "https://repo.hex.pm/tarballs/getopt-1.0.1.tar")        (sha256         (base32 "1fhqnn4dvcil12cmqmzkmlk14lq5rn7ingld2380i6nl8v2dvm48")))) and hexpm-fetch returns   (mlet %store-monad ((guile (package->derivation guile system)))     (gexp->derivation (pk (or name file-name)) build                        … more arguments)) -- Regards Hartmut Goebel | Hartmut Goebel | h.goebel@crazy-compilers.com | | www.crazy-compilers.com | compilers which you thought are impossible |