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Thu, 28 Apr 2022 10:25:47 -0400 Received: from smtp.polymtl.ca ([132.207.4.11]:45488) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nk55T-0003jU-Uw for help-guix@gnu.org; Thu, 28 Apr 2022 10:25:45 -0400 Received: from localhost (modemcable094.169-200-24.mc.videotron.ca [24.200.169.94]) by smtp.polymtl.ca (8.14.7/8.14.7) with ESMTP id 23SEPZKM021955 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 28 Apr 2022 10:25:40 -0400 DKIM-Filter: OpenDKIM Filter v2.11.0 smtp.polymtl.ca 23SEPZKM021955 To: Ricardo Wurmus Cc: zimoun , Maxim Cournoyer , Olivier Dion via Subject: Re: Questions regarding substitutes with debug output In-Reply-To: <874k2d2sup.fsf@elephly.net> References: <877d7joe2w.fsf@laura> <87levx4ui1.fsf@gmail.com> <87ee1pur82.fsf@laura> <86mtg5eibr.fsf@gmail.com> <87mtg5qovg.fsf@laura> <874k2d2sup.fsf@elephly.net> Date: Thu, 28 Apr 2022 10:25:35 -0400 Message-ID: <87fslxqo80.fsf@laura> MIME-Version: 1.0 Content-Type: text/plain X-Poly-FromMTA: (modemcable094.169-200-24.mc.videotron.ca [24.200.169.94]) at Thu, 28 Apr 2022 14:25:35 +0000 Received-SPF: pass client-ip=132.207.4.11; envelope-from=olivier.dion@polymtl.ca; helo=smtp.polymtl.ca X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: help-guix@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-guix-bounces+larch=yhetil.org@gnu.org Sender: "Help-Guix" Reply-to: Olivier Dion From: Olivier Dion via X-Migadu-Flow: FLOW_IN X-Migadu-To: larch@yhetil.org X-Migadu-Country: US ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=yhetil.org; s=key1; t=1651156153; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:in-reply-to:in-reply-to: references:references:list-id:list-help:list-unsubscribe: list-subscribe:list-post; 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dkim=none; dmarc=pass (policy=none) header.from=gnu.org; spf=pass (aspmx1.migadu.com: domain of "help-guix-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="help-guix-bounces+larch=yhetil.org@gnu.org" X-Migadu-Queue-Id: 0096130D0F X-Spam-Score: -1.50 X-Migadu-Scanner: scn1.migadu.com X-TUID: 9qlXNdnqG268 On Thu, 28 Apr 2022, Ricardo Wurmus wrote: > Olivier Dion writes: > >> In my case, I prefer to avoid using package object directly. As >> mentioned in GWL' manual, the version of Guix running GWL and the >> version of Guix used by GWL (the inferior) might not be the same. Thus, >> it is not okay for reproducibility in the long term. In my case, I use >> `guix time-machine --channels` as the inferior. > > The process itself could specify channels to use for its environment. > Then it would be self-contained and reproducible without having to rely > on time-machine. Is this already supported in GWL? I'm not sure if I understand how you would do this. How would it be different from using time-machine? -- Olivier Dion oldiob.dev