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List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "Christopher Baines via Development of GNU Guix and the GNU System distribution." , Sarah Morgensen Errors-To: guix-devel-bounces+larch=yhetil.org@gnu.org Sender: "Guix-devel" X-Migadu-Flow: FLOW_IN ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=yhetil.org; s=key1; t=1630601653; h=from:from:sender:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:list-id:list-help: list-unsubscribe:list-subscribe:list-post:dkim-signature; bh=l2wh68H85wmhTjsNu3XmsqVO0nlS4VJwXVsLmp94S5E=; b=U34kzC8t6xHOKsgcagAnBalUFhK/RmWe2l3k/80ZrGDZKmSENtN5ZpIBkO8lx9PGcZyqit 0/cITDP9m/EgTbTsqFvsqosJOv/XVPpr6azt/Nyx8XTgEDGIjxD1wQdkriyTUQSxR9BYHo NhMkkhLoYTEBhxVRHN6AigI/ZHeU9Q7JxwyA/wBokfAnUeGkMu0/HKtYfz4dogCes5jVBw jnlvRFDUDiYaSKra2dlz3Mv0OPS71exhCzS2zQKWT0klVhEmEUAFYQtMjo5YQKaLk5w0P4 AavM1U+2xAdSxRsH/H0Eu2jZaTFg1XyP3svfqU+kJ+2Z61S5Ix5/D0pi/MHPsQ== ARC-Seal: i=1; s=key1; d=yhetil.org; t=1630601653; a=rsa-sha256; cv=none; b=dMs7vwzUSkb3aXrYvKCGHzbtIQ2dZNh3anzrDnHOMZwhAkrQa0+3B/bltE29h3y4fiUh7Q gWuSHB09SnYm0qgF8h95gLeNUYgQ6k+M+sBp7FitlPtiqgkWF5HtuXogYljcjxi/W4hfFM bkRsCOzwq2mdnQvq5Av7d+vqbGvx35VQTMUEX0+214LJRXzoEcE8fd0TjOvJ2WBLSSPyIt ZhhPgDEYHAbpzj3+MEipiprxKh8to3MitaKMDz4YP6INMlphpthpiJbaD6hdAEEtC7C8AB NhpzpkzcVUUo75/epUvwBjtK0cq/X3eTRFpphQFAYABtFpk+Cka7dlGJB2cCpw== ARC-Authentication-Results: i=1; aspmx1.migadu.com; dkim=fail ("headers rsa verify failed") header.d=famulari.name header.s=mesmtp header.b=bP6ljyhy; dkim=fail ("headers rsa verify failed") header.d=messagingengine.com header.s=fm3 header.b=PueNxcwg; 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-Migadu-Spam-Score: -0.42 Authentication-Results: aspmx1.migadu.com; dkim=fail ("headers rsa verify failed") header.d=famulari.name header.s=mesmtp header.b=bP6ljyhy; dkim=fail ("headers rsa verify failed") header.d=messagingengine.com header.s=fm3 header.b=PueNxcwg; 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-Migadu-Queue-Id: 7F91DDFFE X-Spam-Score: -0.42 X-Migadu-Scanner: scn1.migadu.com X-TUID: navue6+3r6DE On Wed, Sep 01, 2021 at 06:50:36PM +0200, Xinglu Chen wrote: > With the former, I can quickly see that the version is from 2021-01-31, > whereas with the latter, I would have to either find the VCS repo online > or go to my local checkout of it and browse the logs. >=20 > > Commit dates don't have a consistent meaning: are they the time of > > first revision of a commit? Final revision of a commit? Time of > > signing? Pushing? They are often useful to estimate a timeline, but > > it's common for a Git "timeline" to jump back and forth by months or a > > year due to long-running development branches being merged in, or due > > to a "commit and then polish by rebasing" workflow. >=20 > I would say the the time of the final commit would be the best option, > but I agree that it can be ambiguous. My point was that Git does not provide you a timestamp to use for this. There are multiple timestamps embedded into Git commits and none of them reflect anything meaningful.