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Subject: |
[PATCH 0/3] Make time-machine commit check cheaper; make test effective |
Date: |
Sat, 28 Oct 2023 16:02:53 +0200 |
Hello Guix!
These changes were prompted by <https://issues.guix.gnu.org/65788>.
Feedback welcome!
Ludo'.
Ludovic Courtès (3):
tests: Make ‘guix time-machine’ test effective.
time-machine: Make target commit check cheaper.
time-machine: Warn when no command is given.
guix/inferior.scm | 58 +++++++++++-----------
guix/scripts/time-machine.scm | 91 +++++++++++++++++------------------
tests/guix-time-machine.sh | 24 +++++++--
3 files changed, 95 insertions(+), 78 deletions(-)
base-commit: ff1146fb4f7254a8f644f89d7af6b4b566528603
--
2.41.0
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--- Begin Message ---
Subject: |
Re: [bug#66793] [PATCH 2/3] time-machine: Make target commit check cheaper. |
Date: |
Sun, 05 Nov 2023 23:28:22 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) |
Hi,
Maxim Cournoyer <maxim.cournoyer@gmail.com> skribis:
> Ludovic Courtès <ludo@gnu.org> writes:
>
>> Commit 79ec651a286c71a3d4c72be33a1f80e76a560031 introduced a check to
>> error out when attempting to use ‘time-machine’ to travel to a commit
>> before ‘v1.0.0’.
>>
>> This commit fixes a performance issue with the strategy used in
>> 79ec651a286c71a3d4c72be33a1f80e76a560031 (the repository was opened,
>> updated, and traversed a second time by ‘validate-guix-channel’) as well
>> as a user interface issue (“Updating channel” messages would be printed
>> too late).
>>
>> This patch reimplements the check in terms of the existing #:validate-pull
>> mechanism, which is designed to avoid extra repository operations.
>>
>> Fixes <https://issues.guix.gnu.org/65788>.
>>
>> * guix/inferior.scm (cached-channel-instance): Change default value
>> of #:validate-channels. Remove call to VALIDATE-CHANNELS; pass it
>> as #:validate-pull to ‘latest-channel-instances’.
>> * guix/scripts/time-machine.scm (%reference-channels): New variable.
>> (validate-guix-channel): New procedure.
>> (guix-time-machine)[validate-guix-channel]: Remove.
>
> Nitpick: I'd say the proc was moved and simplified to ease traceability
> for the reader; same for %oldest-possible-commit (not mentioned in
> changelog).
Indeed; I clarified that ‘validate-guix-channel’ was moved but didn’t
write anything about ‘%oldest-possible-commit’ because it’s actually
unchanged (just moved a few lines below).
I pushed the result:
331d858e21 time-machine: Warn when no command is given.
ab13e2be69 time-machine: Make target commit check cheaper.
9f05fbb67d tests: Make ‘guix time-machine’ test effective.
Thanks for reviewing!
Ludo’.
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