GNU logs - #39575, boring messages

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Subject: bug#39575: guix time-machine fails when a tarball was modified in-place
Resent-From: Jan Nieuwenhuizen <janneke@HIDDEN>
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Date: Wed, 12 Feb 2020 14:40:24 +0100
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Hi,

Trying to travel back to Sun Apr 7 22:07:14 2019 +0200 (commit
56e95d54d209c2428f970d65d9b27ae4168449ad) to re-create mcrl2-minimal by
doing

--8<---------------cut here---------------start------------->8---
guix time-machine --commit=3D56e95d54d209c2428f970d65d9b27ae4168449ad -- en=
vironment --ad-hoc mcrl2-minimal
--8<---------------cut here---------------end--------------->8---

fails with

--8<---------------cut here---------------start------------->8---
building /gnu/store/cjim33x0q1bv1ppkv3qijvr1pvsn4y0q-harfbuzz-2.4.0.tar.bz2=
.drv...
downloading from https://www.freedesktop.org/software/harfbuzz/release/harf=
buzz-2.4.0.tar.bz2...
|offloading build of /gnu/store/6fgg1irkcvqyb4f9f8n0nzi5gknyqhfn-gcc-mesboo=
t1-4.7.4.drv to 'kluit.dezyne.org'
- 'build' phasesha256 hash mismatch for /gnu/store/b4cdp9sp44848348lrpzbfaf=
hmjqf8nr-harfbuzz-2.4.0.tar.bz2:
  expected hash: 1mpah6kwqid1kxsj4rwqsniivqbrx231j65v51yncx6s0dch0dch
  actual hash:   0vrkvdlmihdg62a4c6h5kx27khc33xmb95l50zgnwnavvpwyyw5l
hash mismatch for store item '/gnu/store/b4cdp9sp44848348lrpzbfafhmjqf8nr-h=
arfbuzz-2.4.0.tar.bz2'
build of /gnu/store/cjim33x0q1bv1ppkv3qijvr1pvsn4y0q-harfbuzz-2.4.0.tar.bz2=
.drv failed
View build log at '/var/log/guix/drvs/cj/im33x0q1bv1ppkv3qijvr1pvsn4y0q-har=
fbuzz-2.4.0.tar.bz2.drv.bz2'.
cannot build derivation `/gnu/store/p6gfcdacjcqf2br0zwsyzx1chfvg9gxi-harfbu=
zz-2.4.0.drv': 1 dependencies couldn't be built
killing process 5083
--8<---------------cut here---------------end--------------->8---

The recipe for harfbuzz has a sha256 that used to be valid in April, but
hasn't been valid anymore since May, as this fix

--8<---------------cut here---------------start------------->8---
commit a8bb8fccd82a10a46f127b2235675b4f6cbaaf98
Author: Marius Bakke <mbakke@HIDDEN>
Date:   Sat May 4 18:01:12 2019 +0200

    gnu: harfbuzz: Update source hash.
=20=20=20=20
    The previous tarball was modified in-place; see
    <https://github.com/harfbuzz/harfbuzz/issues/1641>.
=20=20=20=20
    * gnu/packages/gtk.scm (harfbuzz)[source](sha256): Update.
--8<---------------cut here---------------end--------------->8---

shows.  Thoughts?

Greetings,
janneke


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

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From: help-debbugs@HIDDEN (GNU bug Tracking System)
To: Jan Nieuwenhuizen <janneke@HIDDEN>
Subject: bug#39575: Acknowledgement (guix time-machine fails when a
 tarball was modified in-place)
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Date: Wed, 12 Feb 2020 13:41:02 +0000

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Message sent to bug-guix@HIDDEN:

Subject: bug#39575: guix time-machine fails when a tarball was modified in-place
Resent-From: zimoun <zimon.toutoune@HIDDEN>
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Date: Wed, 12 Feb 2020 15:55:27 +0100
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Hi,


On Wed, 12 Feb 2020 at 14:44, Jan Nieuwenhuizen <janneke@HIDDEN> wrote:

> Trying to travel back to Sun Apr 7 22:07:14 2019 +0200 (commit
> 56e95d54d209c2428f970d65d9b27ae4168449ad) to re-create mcrl2-minimal by
> doing
>
> --8<---------------cut here---------------start------------->8---
> guix time-machine --commit=56e95d54d209c2428f970d65d9b27ae4168449ad -- environment --ad-hoc mcrl2-minimal
> --8<---------------cut here---------------end--------------->8---

Even the simple:

--8<---------------cut here---------------start------------->8---
guix time-machine --commit=56e95d54d209c2428f970d65d9b27ae4168449ad -- help
--8<---------------cut here---------------end--------------->8---

> fails with
>
> --8<---------------cut here---------------start------------->8---
> building /gnu/store/cjim33x0q1bv1ppkv3qijvr1pvsn4y0q-harfbuzz-2.4.0.tar.bz2.drv...
> downloading from https://www.freedesktop.org/software/harfbuzz/release/harfbuzz-2.4.0.tar.bz2...
> |offloading build of /gnu/store/6fgg1irkcvqyb4f9f8n0nzi5gknyqhfn-gcc-mesboot1-4.7.4.drv to 'kluit.dezyne.org'
> - 'build' phasesha256 hash mismatch for /gnu/store/b4cdp9sp44848348lrpzbfafhmjqf8nr-harfbuzz-2.4.0.tar.bz2:
>   expected hash: 1mpah6kwqid1kxsj4rwqsniivqbrx231j65v51yncx6s0dch0dch
>   actual hash:   0vrkvdlmihdg62a4c6h5kx27khc33xmb95l50zgnwnavvpwyyw5l
> hash mismatch for store item '/gnu/store/b4cdp9sp44848348lrpzbfafhmjqf8nr-harfbuzz-2.4.0.tar.bz2'
> build of /gnu/store/cjim33x0q1bv1ppkv3qijvr1pvsn4y0q-harfbuzz-2.4.0.tar.bz2.drv failed
> View build log at '/var/log/guix/drvs/cj/im33x0q1bv1ppkv3qijvr1pvsn4y0q-harfbuzz-2.4.0.tar.bz2.drv.bz2'.
> cannot build derivation `/gnu/store/p6gfcdacjcqf2br0zwsyzx1chfvg9gxi-harfbuzz-2.4.0.drv': 1 dependencies couldn't be built
> killing process 5083
> --8<---------------cut here---------------end--------------->8---

same for e.g., this commit:

--8<---------------cut here---------------start------------->8---
 guix time-machine --commit=ae528aaf19f3828d3d7d204b15570800e1bbf100 -- help
--8<---------------cut here---------------end--------------->8---


> The recipe for harfbuzz has a sha256 that used to be valid in April, but
> hasn't been valid anymore since May, as this fix
>
> --8<---------------cut here---------------start------------->8---
> commit a8bb8fccd82a10a46f127b2235675b4f6cbaaf98
> Author: Marius Bakke <mbakke@HIDDEN>
> Date:   Sat May 4 18:01:12 2019 +0200
>
>     gnu: harfbuzz: Update source hash.
>
>     The previous tarball was modified in-place; see
>     <https://github.com/harfbuzz/harfbuzz/issues/1641>.
>
>     * gnu/packages/gtk.scm (harfbuzz)[source](sha256): Update.
> --8<---------------cut here---------------end--------------->8---
>
> shows.  Thoughts?

Therefore, all the commits between the introduction of harfbuzz with
the old sha256 (commit 2da9b81837fd1e6f08a10952784d3358be982855) and
the commit updating to the new sha256 should be broken.
Roughly speaking, all the commits between April, 7th and the May, 4th;
i.e., 1100+ commits, isn't it?


Well, this ask an interesting question: how Guix can fallback when
upstream is doing wrong?


Considering this 'harbuzz' issue, is it possible to rebuild the old
tarball and push it to SoftWare Heritage? Then when a sha mismatch
happens, fallback and try to fetch it from SWH?


WDYT?

Cheers,
simon

Message sent to bug-guix@HIDDEN:

Subject: bug#39575: guix time-machine fails when a tarball was modified in-place
Resent-From: Ludovic =?UTF-8?Q?Court=C3=A8s?= <ludo@HIDDEN>
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To: Jan Nieuwenhuizen <janneke@HIDDEN>
Cc: 39575 <at> debbugs.gnu.org, zimoun <zimon.toutoune@HIDDEN>
From: Ludovic =?UTF-8?Q?Court=C3=A8s?= <ludo@HIDDEN>
References: <87y2t7j54n.fsf@HIDDEN>
Date: Thu, 13 Feb 2020 22:34:21 +0100
In-Reply-To: <87y2t7j54n.fsf@HIDDEN> (Jan Nieuwenhuizen's message of "Wed, 12
 Feb 2020 14:40:24 +0100")
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Hi,

Jan Nieuwenhuizen <janneke@HIDDEN> skribis:

> building /gnu/store/cjim33x0q1bv1ppkv3qijvr1pvsn4y0q-harfbuzz-2.4.0.tar.b=
z2.drv...
> downloading from https://www.freedesktop.org/software/harfbuzz/release/ha=
rfbuzz-2.4.0.tar.bz2...
> |offloading build of /gnu/store/6fgg1irkcvqyb4f9f8n0nzi5gknyqhfn-gcc-mesb=
oot1-4.7.4.drv to 'kluit.dezyne.org'
> - 'build' phasesha256 hash mismatch for /gnu/store/b4cdp9sp44848348lrpzbf=
afhmjqf8nr-harfbuzz-2.4.0.tar.bz2:
>   expected hash: 1mpah6kwqid1kxsj4rwqsniivqbrx231j65v51yncx6s0dch0dch
>   actual hash:   0vrkvdlmihdg62a4c6h5kx27khc33xmb95l50zgnwnavvpwyyw5l
> hash mismatch for store item '/gnu/store/b4cdp9sp44848348lrpzbfafhmjqf8nr=
-harfbuzz-2.4.0.tar.bz2'

The problem here is really that we fall back to content-addressed
mirrors instead of using them directly:

  https://issues.guix.gnu.org/issue/28659

The file itself is still available on our machines though, and you can
get it with:

  guix download -o harfbuzz-2.4.0.tar.bz2 \
  https://ci.guix.gnu.org/file/harfbuzz-2.4.0.tar.bz2/sha256/0vrkvdlmihdg62=
a4c6h5kx27khc33xmb95l50zgnwnavvpwyyw5l

  guix download file://$PWD/harfbuzz-2.4.0.tar.bz2

After that, re-running =E2=80=98guix time-machine=E2=80=99 should work.

Using ci.guix.gnu.org for substitutes should have the same effect.

HTH,
Ludo=E2=80=99.

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Hi Ludo,

On Thu, 13 Feb 2020 at 22:34, Ludovic Court=C3=A8s <ludo@HIDDEN> wrote:

> The problem here is really that we fall back to content-addressed
> mirrors instead of using them directly:
>
>   https://issues.guix.gnu.org/issue/28659

Thank you for the pointer. Good to see that the problem is almost addressed=
.
I will try to understand the discussion and see what is the status of
the proposed patch.


> The file itself is still available on our machines though, and you can
> get it with:

It is an half cooked solution because the Guix project cannot archive
all; for example in term of store resources.

The content-addressed mirror should be SWH, IMHO.

Well, once sources.json will be up, it should be almost done for the future=
.
But we still need to push all the correct sources that are on
ci.guix.gnu.org; at least all the url based source of package.

Do you have suggestion for a plan?


>   guix download -o harfbuzz-2.4.0.tar.bz2 \
>   https://ci.guix.gnu.org/file/harfbuzz-2.4.0.tar.bz2/sha256/0vrkvdlmihdg=
62a4c6h5kx27khc33xmb95l50zgnwnavvpwyyw5l
>
>   guix download file://$PWD/harfbuzz-2.4.0.tar.bz2
>
> After that, re-running =E2=80=98guix time-machine=E2=80=99 should work.

Thank you. This should fix the harfbuzz mismatch issue. Cool! :-)


> Using ci.guix.gnu.org for substitutes should have the same effect.

Hum? I thought that I used ci.guix.gnu.org as substitutes... soI need to ch=
eck.


Cheers,
simon

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Hello Ludo'

Ludovic Court=C3=A8s <ludo@HIDDEN> writes:

[...]

> The problem here is really that we fall back to content-addressed
> mirrors instead of using them directly:
>
>   https://issues.guix.gnu.org/issue/28659

Given the natute (AFAIU) of this issue is the very same of the bug you
mention, shouldn't this bug be merged (forcemerged?) whith #28659?

If you agree and have no time, I can try doing this

> The file itself is still available on our machines though, and you can
> get it with:
>
>   guix download -o harfbuzz-2.4.0.tar.bz2 \
>   https://ci.guix.gnu.org/file/harfbuzz-2.4.0.tar.bz2/sha256/0vrkvdlmihdg=
62a4c6h5kx27khc33xmb95l50zgnwnavvpwyyw5l
>
>   guix download file://$PWD/harfbuzz-2.4.0.tar.bz2
>
> After that, re-running =E2=80=98guix time-machine=E2=80=99 should work.

Does make it sense to make this workaround more general and add this as
a Cookbook or blog entry? If the patch you propose in #28659 solve any
issue and is ready to be merget of course it's not worth the effort

[...]

Thanks! Gio'

=2D-=20
Giovanni Biscuolo

Xelera IT Infrastructures

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Hi Ludo,

On Thu, 13 Feb 2020 at 22:34, Ludovic Court=C3=A8s <ludo@HIDDEN> wrote:
>
> Hi,
>
> Jan Nieuwenhuizen <janneke@HIDDEN> skribis:
>
> > building /gnu/store/cjim33x0q1bv1ppkv3qijvr1pvsn4y0q-harfbuzz-2.4.0.tar=
.bz2.drv...
> > downloading from https://www.freedesktop.org/software/harfbuzz/release/=
harfbuzz-2.4.0.tar.bz2...
> > |offloading build of /gnu/store/6fgg1irkcvqyb4f9f8n0nzi5gknyqhfn-gcc-me=
sboot1-4.7.4.drv to 'kluit.dezyne.org'
> > - 'build' phasesha256 hash mismatch for /gnu/store/b4cdp9sp44848348lrpz=
bfafhmjqf8nr-harfbuzz-2.4.0.tar.bz2:
> >   expected hash: 1mpah6kwqid1kxsj4rwqsniivqbrx231j65v51yncx6s0dch0dch
> >   actual hash:   0vrkvdlmihdg62a4c6h5kx27khc33xmb95l50zgnwnavvpwyyw5l
> > hash mismatch for store item '/gnu/store/b4cdp9sp44848348lrpzbfafhmjqf8=
nr-harfbuzz-2.4.0.tar.bz2'
>
> The file itself is still available on our machines though, and you can
> get it with:
>
>   guix download -o harfbuzz-2.4.0.tar.bz2 \
>   https://ci.guix.gnu.org/file/harfbuzz-2.4.0.tar.bz2/sha256/0vrkvdlmihdg=
62a4c6h5kx27khc33xmb95l50zgnwnavvpwyyw5l

Maybe I miss a point, but the file we need is the old one, not the new
one, i.e., the one with the expected hash
1mpah6kwqid1kxsj4rwqsniivqbrx231j65v51yncx6s0dch0dch. And I should do
wrong but ci.guix.gnu.org does not have this file -- otherwise it will
find it because of substitutes mechanism.

--8<---------------cut here---------------start------------->8---
 $ guix download -o /tmp/harfbuzz-old.tar.bz2 \
 https://ci.guix.gnu.org/file/harfbuzz-2.4.0.tar.bz2/sha256/1mpah6kwqid1kxs=
j4rwqsniivqbrx231j65v51yncx6s0dch0dch

Starting download of /tmp/harfbuzz-old.tar.bz2
From https://ci.guix.gnu.org/file/harfbuzz-2.4.0.tar.bz2/sha256/1mpah6kwqid=
1kxsj4rwqsniivqbrx231j65v51yncx6s0dch0dch...
download failed
"https://ci.guix.gnu.org/file/harfbuzz-2.4.0.tar.bz2/sha256/1mpah6kwqid1kxs=
j4rwqsniivqbrx231j65v51yncx6s0dch0dch"
404 "Not Found"
failed to download "/tmp/harfbuzz-old.tar.bz2" from
"https://ci.guix.gnu.org/file/harfbuzz-2.4.0.tar.bz2/sha256/1mpah6kwqid1kxs=
j4rwqsniivqbrx231j65v51yncx6s0dch0dch"
guix download: error: open-file: No such file or directory:
"/tmp/harfbuzz-old.tar.bz2"
--8<---------------cut here---------------end--------------->8---



Cheers,
simon

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Hi Giovanni,

On Fri, 14 Feb 2020 at 11:07, Giovanni Biscuolo <g@HIDDEN> wrote:
> Ludovic Court=C3=A8s <ludo@HIDDEN> writes:

> > The problem here is really that we fall back to content-addressed
> > mirrors instead of using them directly:
> >
> >   https://issues.guix.gnu.org/issue/28659
>
> Given the natute (AFAIU) of this issue is the very same of the bug you
> mention, shouldn't this bug be merged (forcemerged?) whith #28659?

AFAIU, there is 2 issues:
 1. how to do with the particular case of harfbuzz -- bug#39575
 2. how to solve the general case of unreliable sources -- bug#28659

So instead of merging the bugs (case 2.), I would like to solve 1.,
mark it as done and report to bug#28659. It will ease to follow
because the thread in bug#28659 is already heavy. :-)



All the best,
simon

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From: Ludovic =?UTF-8?Q?Court=C3=A8s?= <ludo@HIDDEN>
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Hi,

zimoun <zimon.toutoune@HIDDEN> skribis:

> On Thu, 13 Feb 2020 at 22:34, Ludovic Court=C3=A8s <ludo@HIDDEN> wrote:
>>
>> Hi,
>>
>> Jan Nieuwenhuizen <janneke@HIDDEN> skribis:
>>
>> > building /gnu/store/cjim33x0q1bv1ppkv3qijvr1pvsn4y0q-harfbuzz-2.4.0.ta=
r.bz2.drv...
>> > downloading from https://www.freedesktop.org/software/harfbuzz/release=
/harfbuzz-2.4.0.tar.bz2...
>> > |offloading build of /gnu/store/6fgg1irkcvqyb4f9f8n0nzi5gknyqhfn-gcc-m=
esboot1-4.7.4.drv to 'kluit.dezyne.org'
>> > - 'build' phasesha256 hash mismatch for /gnu/store/b4cdp9sp44848348lrp=
zbfafhmjqf8nr-harfbuzz-2.4.0.tar.bz2:
>> >   expected hash: 1mpah6kwqid1kxsj4rwqsniivqbrx231j65v51yncx6s0dch0dch
>> >   actual hash:   0vrkvdlmihdg62a4c6h5kx27khc33xmb95l50zgnwnavvpwyyw5l
>> > hash mismatch for store item '/gnu/store/b4cdp9sp44848348lrpzbfafhmjqf=
8nr-harfbuzz-2.4.0.tar.bz2'
>>
>> The file itself is still available on our machines though, and you can
>> get it with:
>>
>>   guix download -o harfbuzz-2.4.0.tar.bz2 \
>>   https://ci.guix.gnu.org/file/harfbuzz-2.4.0.tar.bz2/sha256/0vrkvdlmihd=
g62a4c6h5kx27khc33xmb95l50zgnwnavvpwyyw5l
>
> Maybe I miss a point, but the file we need is the old one, not the new
> one, i.e., the one with the expected hash
> 1mpah6kwqid1kxsj4rwqsniivqbrx231j65v51yncx6s0dch0dch.

Oops, my bad.

> And I should do wrong but ci.guix.gnu.org does not have this file --
> otherwise it will find it because of substitutes mechanism.
>
>  $ guix download -o /tmp/harfbuzz-old.tar.bz2 \
>  https://ci.guix.gnu.org/file/harfbuzz-2.4.0.tar.bz2/sha256/1mpah6kwqid1k=
xsj4rwqsniivqbrx231j65v51yncx6s0dch0dch

I checked on a bunch of machines and couldn=E2=80=99t find it.

Everyone, please check whether you have
/gnu/store/b4cdp9sp44848348lrpzbfafhmjqf8nr-harfbuzz-2.4.0.tar.bz2 and
so share!

Ludo=E2=80=99.

Last modified: Fri, 14 Feb 2020 12:30:02 UTC

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