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From: Leo Famulari <leo@famulari.name>
To: David Craven <david@craven.ch>
Cc: guix-devel <guix-devel@gnu.org>,
	Guix-devel <guix-devel-bounces+me=tobias.gr@gnu.org>
Subject: Re: [PATCH 4/4] environment: Add '--debug' flag.
Date: Wed, 20 Jul 2016 00:17:13 -0400	[thread overview]
Message-ID: <20160720041713.GD21435@jasmine> (raw)
In-Reply-To: <CAL1_imnO7izwehfhRmER=pWN-Ze2zEOtmEv_xqTRhCN2r8Xsyw@mail.gmail.com>

On Tue, Jul 19, 2016 at 09:02:58PM +0200, David Craven wrote:
> > 1. I'd like to use overlay fs (like docker) and create a new overlay
> > for each phase to easily revert a phase.
> 
> I think this might also help to debug build reproducibility issues, by
> finding out which phase is introducing them. (Or is it always
> obvious?)

In general, the idea of being able to move between phases like that is
really cool. I don't have any experience with overlayfs, so I can't
comment on that detail.

I wouldn't say it's ever obvious where a reproducibility bug is
introduced, but many of them are timestamps, sometimes with an English
string attached, and that code is usually easy to find.

Thankfully, the Reproducible Builds project has a useful database of
bugs they've found:

https://anonscm.debian.org/git/reproducible/notes.git

  parent reply	other threads:[~2016-07-20  4:17 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-07-19 16:49 [PATCH 0/4] Dipping my toes into guix source David Craven
2016-07-19 16:49 ` [PATCH 1/4] lint: Add packages with suffix ':bin' to 'inputs-should-be-native' David Craven
2016-07-20 10:37   ` Ludovic Courtès
2016-07-20 10:50     ` David Craven
2016-07-20 11:19       ` Efraim Flashner
2016-07-21 12:24       ` Ludovic Courtès
2016-07-21 13:22         ` Vincent Legoll
2016-07-21 16:06           ` Ludovic Courtès
2016-07-21 19:27             ` Tobias Geerinckx-Rice
2016-07-22 13:32               ` Ludovic Courtès
2016-07-22 14:07                 ` Vincent Legoll
2016-07-19 16:49 ` [PATCH 2/4] gnu: Rename 'glib' label to 'glib:bin' where appropriate David Craven
2016-07-22 12:57   ` Ludovic Courtès
2016-07-22 13:03     ` David Craven
2016-07-22 17:55       ` David Craven
2016-07-19 16:49 ` [PATCH 3/4] lint: Add 'inputs-should-be-sorted' check David Craven
2016-07-21 13:17   ` Eric Bavier
2016-07-21 16:00     ` Ludovic Courtès
2016-07-19 16:49 ` [PATCH 4/4] environment: Add '--debug' flag David Craven
2016-07-19 17:14   ` Thompson, David
2016-07-19 18:00     ` Tobias Geerinckx-Rice
2016-07-19 18:10       ` David Craven
2016-07-19 19:02         ` David Craven
2016-07-19 19:06           ` Thompson, David
2016-07-19 19:15             ` David Craven
2016-07-20  4:17           ` Leo Famulari [this message]
2016-07-20 10:35         ` Ludovic Courtès
2016-07-20 10:56           ` David Craven
2016-07-19 20:11       ` Danny Milosavljevic
2016-07-20  7:18         ` Alex Kost
2016-07-20  7:35           ` Vincent Legoll
2016-07-20  9:15           ` Pjotr Prins
2016-07-22 19:54         ` Customising linux-libre (was: [PATCH 4/4] environment: Add '--debug' flag.) Tobias Geerinckx-Rice
2016-07-22 19:58           ` Vincent Legoll
2016-07-22 20:00             ` David Craven
2016-07-22 20:03               ` Vincent Legoll
2016-07-22 20:15               ` Customising linux-libre Tobias Geerinckx-Rice
2016-07-22 20:50                 ` David Craven
2016-07-22 20:11             ` Tobias Geerinckx-Rice
2016-07-23 10:38               ` Ludovic Courtès
2016-07-21 12:22   ` [PATCH 4/4] environment: Add '--debug' flag Ludovic Courtès
2016-07-21 12:30     ` David Craven
2016-07-21 16:03       ` Ludovic Courtès
2016-07-21 16:12         ` David Craven
2016-07-21 16:38           ` Ludovic Courtès

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