GNU logs - #33276, boring messages

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Subject: bug#33276: guix still building when substitute is available (or is guix pull not reproducible)
Resent-From: Pjotr Prins <pjotr.public12@HIDDEN>
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Date: Mon, 5 Nov 2018 17:26:51 +0100
From: Pjotr Prins <pjotr.public12@HIDDEN>
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I have a guix-publish server and I am building the packages with the
exact same checkout of 'guix pull'. Even though the client sees the
substitutes with --dry-run it still builds them.

On build host (check version first)

	penguin2:~$ ~/.config/guix/current/bin/guix --version
	guix (GNU Guix) ff349415b27cc764fd7168ef35ca76c3b8b05889

	Copyright (C) 2018 the Guix authors

	penguin2:~$ ~/.config/guix/current/bin/guix package -i perl mosh --substitute-urls="https://berlin.guixsd.org" --fallback

	building /gnu/store/ih5liw094mkjg1n4qakipfdgmrhvpj68-protobuf-3.5.1.drv...
	building /gnu/store/bhrgmk0xax0yl50whb8faankknw4z254-mosh-1.3.2.drv...
	The following packages will be installed:
		 perl 5.26.1  /gnu/store/7ifc22sh86zblnzamqimgmv06idyx69v-perl-5.26.1
		 mosh 1.3.2   /gnu/store/5qanifm23gqxhg2bh587dzah0mf79fp0-mosh-1.3.2

On client (check version first)

	monza:~$ ~/.config/guix/current/bin/guix --version
	guix (GNU Guix) ff349415b27cc764fd7168ef35ca76c3b8b05889

	Copyright (C) 2018 the Guix authors

	monza:~$ ~/.config/guix/current/bin/guix package -i perl mosh --substitute-urls="http://guix.genenetwork.org https://berlin.guixsd.org" --dry-run
	The following packages would be installed:
		 perl 5.26.1  /gnu/store/6zz27h4l21b8f2mifrk9sidvib9cns2i-perl-5.26.1
		 mosh 1.3.2   /gnu/store/dkpkd7ajh3kvpzfdfacqg50x49i78x5y-mosh-1.3.2

Strangely the hash values differ but it still wants to fetch them. But when I do an actual install it rebuilds:

	monza:~$ ~/.config/guix/current/bin/guix package -i perl mosh --substitute-urls="http://guix.genenetwork.org https://berlin.guixsd.org"
	building /gnu/store/ih5liw094mkjg1n4qakipfdgmrhvpj68-protobuf-3.5.1.drv...

What is causing the difference? Should the guix pull not be identical
when it is the same checkout? Or am I missing something.

Obviously this does not work for my deployment purposes. Or at least
it is limited in use if I can't use a 'guix publish' server. Showing
the faulty substitutes is also interesting behaviour...

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From: help-debbugs@HIDDEN (GNU bug Tracking System)
To: Pjotr Prins <pjotr.public12@HIDDEN>
Subject: bug#33276: Acknowledgement (guix still building when substitute
 is available (or is guix pull not reproducible))
Message-ID: <handler.33276.B.154143523419073.ack <at> debbugs.gnu.org>
References: <20181105162651.wss2ex6msdbzrwir@HIDDEN>
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Date: Mon, 05 Nov 2018 16:28:02 +0000

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Subject: bug#33276: guix still building when substitute is available (or is guix pull not reproducible)
Resent-From: ludo@HIDDEN (Ludovic =?UTF-8?Q?Court=C3=A8s?=)
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Resent-Date: Tue, 06 Nov 2018 14:22:01 +0000
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To: Pjotr Prins <pjotr.public12@HIDDEN>
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From: ludo@HIDDEN (Ludovic =?UTF-8?Q?Court=C3=A8s?=)
References: <20181105162651.wss2ex6msdbzrwir@HIDDEN>
Date: Tue, 06 Nov 2018 15:21:29 +0100
In-Reply-To: <20181105162651.wss2ex6msdbzrwir@HIDDEN> (Pjotr Prins's
 message of "Mon, 5 Nov 2018 17:26:51 +0100")
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Hello,

Pjotr Prins <pjotr.public12@HIDDEN> skribis:

> I have a guix-publish server and I am building the packages with the
> exact same checkout of 'guix pull'. Even though the client sees the
> substitutes with --dry-run it still builds them.
>
> On build host (check version first)
>
> 	penguin2:~$ ~/.config/guix/current/bin/guix --version
> 	guix (GNU Guix) ff349415b27cc764fd7168ef35ca76c3b8b05889
>
> 	Copyright (C) 2018 the Guix authors
>
> 	penguin2:~$ ~/.config/guix/current/bin/guix package -i perl mosh --subst=
itute-urls=3D"https://berlin.guixsd.org" --fallback
>
> 	building /gnu/store/ih5liw094mkjg1n4qakipfdgmrhvpj68-protobuf-3.5.1.drv.=
..
> 	building /gnu/store/bhrgmk0xax0yl50whb8faankknw4z254-mosh-1.3.2.drv...
> 	The following packages will be installed:
> 		 perl 5.26.1  /gnu/store/7ifc22sh86zblnzamqimgmv06idyx69v-perl-5.26.1
> 		 mosh 1.3.2   /gnu/store/5qanifm23gqxhg2bh587dzah0mf79fp0-mosh-1.3.2
>
> On client (check version first)
>
> 	monza:~$ ~/.config/guix/current/bin/guix --version
> 	guix (GNU Guix) ff349415b27cc764fd7168ef35ca76c3b8b05889
>
> 	Copyright (C) 2018 the Guix authors
>
> 	monza:~$ ~/.config/guix/current/bin/guix package -i perl mosh --substitu=
te-urls=3D"http://guix.genenetwork.org https://berlin.guixsd.org" --dry-run
> 	The following packages would be installed:
> 		 perl 5.26.1  /gnu/store/6zz27h4l21b8f2mifrk9sidvib9cns2i-perl-5.26.1
> 		 mosh 1.3.2   /gnu/store/dkpkd7ajh3kvpzfdfacqg50x49i78x5y-mosh-1.3.2
>
> Strangely the hash values differ but it still wants to fetch them. But wh=
en I do an actual install it rebuilds:

When you=E2=80=99re using --dry-run, what gets displayed is the file names =
of
the ungrafted packages.  That=E2=80=99s why you see different file names in=
 the
first case.

As to why you=E2=80=99re not getting substitutes, it could be missing
authorization, etc.  What does =E2=80=98guix publish=E2=80=99 display?

Thanks,
Ludo=E2=80=99.

Message sent to bug-guix@HIDDEN:

Subject: bug#33276: guix still building when substitute is available (or is guix pull not reproducible)
Resent-From: Pjotr Prins <pjotr.public12@HIDDEN>
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Resent-Date: Thu, 08 Nov 2018 18:31:01 +0000
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To: Ludovic =?UTF-8?Q?Court=C3=A8s?= <ludo@HIDDEN>
Cc: 33276 <at> debbugs.gnu.org, Pjotr Prins <pjotr.public12@HIDDEN>
Date: Thu, 8 Nov 2018 19:30:39 +0100
From: Pjotr Prins <pjotr.public12@HIDDEN>
Message-ID: <20181108183039.a6drroqcswwd7rl5@HIDDEN>
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 <877ehq1e3a.fsf@HIDDEN>
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On Tue, Nov 06, 2018 at 03:21:29PM +0100, Ludovic Courtès wrote:
> As to why you’re not getting substitutes, it could be missing
> authorization, etc.  What does ‘guix publish’ display?

Substitutes work fine for normal package install. No problem with the
setup. No, this is specific to guix pull with a commit flag.

Did you try this yourself? It is reproducible as a problem.

Could it theoretically be possible that guix pull with a specific
commit set done at different time points leads to a different build?
I.e., is the underlying build system not a variable (bootstrap and all
that)?

When I have time I'll try that guix pull twice. See what happens.

Pj.

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