GNU bug report logs - #48008
guix time-machine: error: Git error: the requested type does not match the type in the ODB

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Package: guix; Reported by: Oleg Pykhalov <go.wigust@HIDDEN>; dated Sat, 24 Apr 2021 21:18:01 UTC; Maintainer for guix is bug-guix@HIDDEN.

Message received at 48008 <at> debbugs.gnu.org:


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From: =?utf-8?Q?Ludovic_Court=C3=A8s?= <ludo@HIDDEN>
To: Oleg Pykhalov <go.wigust@HIDDEN>
Subject: Re: bug#48008: guix time-machine: error: Git error: the requested
 type does not match the type in the ODB
References: <87h7jv2xi7.fsf@HIDDEN>
Date: Fri, 30 Apr 2021 17:53:35 +0200
In-Reply-To: <87h7jv2xi7.fsf@HIDDEN> (Oleg Pykhalov's message of "Sun, 25
 Apr 2021 00:17:20 +0300")
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Hi Oleg,

Oleg Pykhalov <go.wigust@HIDDEN> skribis:

> guix time-machine fails for 5b7a1cb0 (doesn't fail for the parent commit
> baab87ac).
>
> $ mv ~/.cache/guix/checkouts  ~/.cache/guix/checkouts.1
>
> $ guix time-machine --commit=3D5b7a1cb077931a020c0b7e3b12f12a7bda221d96 -=
- build hello
> Updating channel 'guix' from Git repository at 'https://git.savannah.gnu.=
org/git/guix.git'...
> guix time-machine: error: Git error: the requested type does not match th=
e type in the ODB

What =E2=80=98guix=E2=80=99 is trying to tell us is that
5b7a1cb077931a020c0b7e3b12f12a7bda221d96 is not a =E2=80=9Ccommit=E2=80=9D =
object: it=E2=80=99s
a =E2=80=9Ctag=E2=80=9D (or =E2=80=9Cannotated tag=E2=80=9D) object.

Instead, you should run:

  guix time-machine --commit=3Dd68de958b60426798ed62797ff7c96c327a672ac -- \
    build hello=20

=E2=80=A6 where d68de958b60426798ed62797ff7c96c327a672ac is the commit this=
 tag
points to (v1.0.1).

That said, as a user, one certainly doesn=E2=80=99t care about this subtlet=
y.
It would be nice if (guix git) could automatically dereference annotated
tags, though it doesn=E2=80=99t seem to be that simple (there are places wh=
ere
we explicitly ask for a commit object and we need to keep some sort of
=E2=80=9Ctype checks=E2=80=9D on Git objects).

Thanks,
Ludo=E2=80=99.




Information forwarded to bug-guix@HIDDEN:
bug#48008; Package guix. Full text available.

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From: Oleg Pykhalov <go.wigust@HIDDEN>
To: bug-guix <bug-guix@HIDDEN>
Subject: guix time-machine: error: Git error: the requested type does not
 match the type in the ODB
Date: Sun, 25 Apr 2021 00:17:20 +0300
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--=-=-=
Content-Type: text/plain

guix time-machine fails for 5b7a1cb0 (doesn't fail for the parent commit
baab87ac).

$ mv ~/.cache/guix/checkouts  ~/.cache/guix/checkouts.1

$ guix time-machine --commit=5b7a1cb077931a020c0b7e3b12f12a7bda221d96 -- build hello
Updating channel 'guix' from Git repository at 'https://git.savannah.gnu.org/git/guix.git'...
guix time-machine: error: Git error: the requested type does not match the type in the ODB

--=-=-=
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--=-=-=--




Acknowledgement sent to Oleg Pykhalov <go.wigust@HIDDEN>:
New bug report received and forwarded. Copy sent to bug-guix@HIDDEN. Full text available.
Report forwarded to bug-guix@HIDDEN:
bug#48008; Package guix. Full text available.
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Last modified: Fri, 30 Apr 2021 16:00:02 UTC

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