From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jan Nieuwenhuizen <janneke@gnu.org>
Subject: bug#28659: v0.13: guix pull fails;
	libgit2-0.26.0 and 0.25.1 content hashes fail
Date: Mon, 02 Oct 2017 22:22:33 +0200
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	<20171002182208.GB10773@jasmine.lan> <878tgt721q.fsf@gnu.org>
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In-Reply-To: <878tgt721q.fsf@gnu.org> ("Ludovic
	\=\?utf-8\?Q\?Court\=C3\=A8s\=22'\?\=
	\=\?utf-8\?Q\?s\?\= message of "Mon, 02 Oct 2017 22:00:33 +0200")
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To: Ludovic =?UTF-8?Q?Court=C3=A8s?= <ludo@gnu.org>
Cc: 28659@debbugs.gnu.org

Ludovic Court=C3=A8s writes:

> Right.  Jan suggested checking the content-addressed mirrors *before*
> the real upstream address.  That would address the problem of upstream
> sources modified in-place, but at the cost of privacy/self-sufficiency
> as you note.  (Though it=E2=80=99s not really making =E2=80=9Cprivacy=E2=
=80=9D any worse in this
> case: it=E2=80=99s gnu.org vs. github.com.)

Yes, that may not preferrable in general without override.

> Perhaps we should make content-addressed mirrors configurable in a way
> that=E2=80=99s orthogonal to derivations, something similar in spirit to
> --substitute-urls?  The difficulty is that content-addressed mirrors are
> not just URLs; see (guix download).

Hmm.  I'm not sure what problem we are solving.  Should we only do this
for github(-like) tarballs?  Do we see this problem with other sources,
should we prevent it?  Possibly github will never do something like this
again.  Or we could banish github/gitlab(?) auto-generated tarballs and
go for git checkouts+commits?

janneke

--=20
Jan Nieuwenhuizen <janneke@gnu.org> | GNU LilyPond http://lilypond.org
Freelance IT http://JoyofSource.com | Avatar=C2=AE http://AvatarAcademy.com