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 cLZ7MNIPpV+/DwAA0tVLHw (envelope-from ) for ; Fri, 06 Nov 2020 08:56:50 +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 ID5ILNIPpV+tFQAAbx9fmQ (envelope-from ) for ; Fri, 06 Nov 2020 08:56:50 +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 8B8A694036A for ; Fri, 6 Nov 2020 08:56:50 +0000 (UTC) Received: from localhost ([::1]:57898 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kaxY9-0006hS-Ei for larch@yhetil.org; Fri, 06 Nov 2020 03:56:49 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:57070) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kaxY1-0006h8-EW for guix-devel@gnu.org; Fri, 06 Nov 2020 03:56:41 -0500 Received: from fencepost.gnu.org ([2001:470:142:3::e]:49155) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kaxY0-0000FB-Qg; Fri, 06 Nov 2020 03:56:40 -0500 Received: from [2a01:e0a:1d:7270:af76:b9b:ca24:c465] (port=57144 helo=ribbon) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1kaxXy-0007Ej-FC; Fri, 06 Nov 2020 03:56:39 -0500 From: =?utf-8?Q?Ludovic_Court=C3=A8s?= To: John Soo Subject: Re: RFC: subcommand to pause/resume builds References: <87r1pbzixl.fsf@asu.edu> <87zh3yczss.fsf@gnu.org> <87ft5q4d0i.fsf@nckx> <874km6z7o5.fsf@asu.edu> X-URL: http://www.fdn.fr/~lcourtes/ X-Revolutionary-Date: 16 Brumaire 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: Fri, 06 Nov 2020 09:56:37 +0100 In-Reply-To: <874km6z7o5.fsf@asu.edu> (John Soo's message of "Tue, 03 Nov 2020 09:12:10 -0800") Message-ID: <87wnyy3ltm.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-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: , Cc: guix-devel@gnu.org Errors-To: guix-devel-bounces+larch=yhetil.org@gnu.org Sender: "Guix-devel" X-Scanner: ns3122888.ip-94-23-21.eu Authentication-Results: aspmx1.migadu.com; dkim=none; dmarc=pass (policy=none) header.from=gnu.org; 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: -1.51 X-TUID: PBMdpIdp+Nao Hi, John Soo skribis: > This feels close to little sed/awk pipelines. Which is not to be > entirely dismissive. I like the compositionality of these tools. In > fact I mentioned earlier that it might be good to send arbitrary > signals. But why not let kill (shell or scheme) do that? All we would > need is to filter and format pids in a composable way (on the scheme > side and the shell side). That has the benefits of remaining agnostic on > side effects in builds (let the user decide what they are comfortable > with) and being more composable. > > Maybe flags like this would be enough: > > guix processes --session=3D ... > > to get something like > > 5555 > 1212 > 343434 > ... You can filter by piping =E2=80=98guix processes=E2=80=99 output through = =E2=80=98recsel=E2=80=99: --8<---------------cut here---------------start------------->8--- $ sudo guix processes | recsel -p SessionPID,LockHeld -e 'LockHeld ~ "chrom= ium"' SessionPID: 31410 LockHeld: /gnu/store/kdsp1pjj6znaxzs3d0vfwdcddc436g7f-ungoogled-chromium-86= .0.4240.183-0.b68e17f.lock SessionPID: 3455 LockHeld: /gnu/store/bhy3c5damrpzx7hdp8bam1lk2rk7789r-ungoogled-chromium-86= .0.4240.183-0.b68e17f.lock --8<---------------cut here---------------end--------------->8--- HTH, Ludo=E2=80=99.