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 yOmiFExoeF+rTAAA0tVLHw (envelope-from ) for ; Sat, 03 Oct 2020 12:02:20 +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 qKVlEExoeF+FHgAAbx9fmQ (envelope-from ) for ; Sat, 03 Oct 2020 12:02:20 +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 C77A39403C9 for ; Sat, 3 Oct 2020 12:02:19 +0000 (UTC) Received: from localhost ([::1]:40232 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kOgEy-0001Mn-MK for larch@yhetil.org; Sat, 03 Oct 2020 08:02:16 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:57892) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kOgEk-0001MX-99 for bug-guix@gnu.org; Sat, 03 Oct 2020 08:02:02 -0400 Received: from debbugs.gnu.org ([209.51.188.43]:59768) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1kOgEj-0007Mt-Uz for bug-guix@gnu.org; Sat, 03 Oct 2020 08:02:01 -0400 Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1kOgEj-0000Ea-Sd for bug-guix@gnu.org; Sat, 03 Oct 2020 08:02:01 -0400 X-Loop: help-debbugs@gnu.org Subject: bug#43757: cuirass: Fail to fetch "guix" input. Resent-From: Ludovic =?UTF-8?Q?Court=C3=A8s?= Original-Sender: "Debbugs-submit" Resent-CC: bug-guix@gnu.org Resent-Date: Sat, 03 Oct 2020 12:02:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 43757 X-GNU-PR-Package: guix X-GNU-PR-Keywords: To: Mathieu Othacehe Received: via spool by 43757-done@debbugs.gnu.org id=D43757.1601726471840 (code D ref 43757); Sat, 03 Oct 2020 12:02:01 +0000 Received: (at 43757-done) by debbugs.gnu.org; 3 Oct 2020 12:01:11 +0000 Received: from localhost ([127.0.0.1]:43081 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1kOgDu-0000DR-Ct for submit@debbugs.gnu.org; Sat, 03 Oct 2020 08:01:11 -0400 Received: from eggs.gnu.org ([209.51.188.92]:50922) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1kOgDf-0000Cd-Nu for 43757-done@debbugs.gnu.org; Sat, 03 Oct 2020 08:01:09 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]:53122) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kOgDa-0007Ii-7R; Sat, 03 Oct 2020 08:00:50 -0400 Received: from [2a01:e0a:1d:7270:af76:b9b:ca24:c465] (port=44176 helo=ribbon) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1kOgDU-0001Nx-Nk; Sat, 03 Oct 2020 08:00:45 -0400 From: Ludovic =?UTF-8?Q?Court=C3=A8s?= References: <87v9ft6jfa.fsf@gnu.org> <87h7rbisa6.fsf@gnu.org> X-URL: http://www.fdn.fr/~lcourtes/ X-Revolutionary-Date: 12 =?UTF-8?Q?Vend=C3=A9miaire?= an 229 de la =?UTF-8?Q?R=C3=A9volution?= X-PGP-Key-ID: 0x090B11993D9AEBB5 X-PGP-Key: http://www.fdn.fr/~lcourtes/ludovic.asc X-PGP-Fingerprint: 3CE4 6455 8A84 FDC6 9DB4 0CFB 090B 1199 3D9A EBB5 X-OS: x86_64-pc-linux-gnu Date: Sat, 03 Oct 2020 14:00:42 +0200 In-Reply-To: <87h7rbisa6.fsf@gnu.org> (Mathieu Othacehe's message of "Sat, 03 Oct 2020 11:16:01 +0200") Message-ID: <87k0w7frit.fsf@gnu.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Score: 0.0 (/) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-Spam-Score: -3.3 (---) X-BeenThere: bug-guix@gnu.org List-Id: Bug reports for GNU Guix List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: 43757-done@debbugs.gnu.org, jonathan.brielmaier@web.de Errors-To: bug-guix-bounces+larch=yhetil.org@gnu.org Sender: "bug-Guix" X-Scanner: scn0 Authentication-Results: aspmx1.migadu.com; dkim=none; dmarc=pass (policy=none) header.from=gnu.org; spf=pass (aspmx1.migadu.com: domain of bug-guix-bounces@gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=bug-guix-bounces@gnu.org X-Spam-Score: -1.51 X-TUID: rbiL4hJf/FBM Hi, Mathieu Othacehe skribis: >> ERROR: In procedure make-stack: >> Attempt to suspend fiber within continuation barrier > > Turns out "par-map" call does not seem suspendable, even though I'm not > sure why. Maybe Ludo can help here :) ? =E2=80=98par-map=E2=80=99 is implemented in terms of futures, and futures u= se their own thread pool. What=E2=80=99s likely to block is =E2=80=98touch=E2=80=99: it= essentially waits on a condition variable, which Fibers cannot interrupt. I=E2=80=99d say that mixing fibers and =E2=80=98par-map=E2=80=99 is a bad i= dea. :-) If we need such a thing, I think we should implement it on top of Fibers. Implementing futures on top of fibers + channels should be easier than what (ice-9 futures) does. > This is fixed with: 761443bca6178b4ac299a8bd368d1cac4abda5f8. Why not just replace =E2=80=98par-map=E2=80=99 with =E2=80=98map=E2=80=99? = That sounds easier and I suspect it doesn=E2=80=99t change much performance-wise. (There=E2=80=99s a 2nd use of =E2=80=98par-map=E2=80=99 in that file.) Thanks, Ludo=E2=80=99.