GNU bug report logs - #74654
[PATCH 0/5] Optimize 'all-packages'; add ungrafting manifest

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From: Ludovic Courtès <ludo <at> gnu.org>
To: David Elsing <david.elsing <at> posteo.net>
Cc: 74654 <at> debbugs.gnu.org
Subject: [bug#74654] [PATCH 2/5] packages: Optimize ‘all-packages’.
Date: Wed, 04 Dec 2024 17:34:01 +0100

Hello,

David Elsing <david.elsing <at> posteo.net> skribis:

> Ludovic Courtès <ludo <at> gnu.org> writes:
>
>> On my laptop, wall-clock time for (all-packages) goes from 27s to 1s.
>>
>> * gnu/packages.scm (all-packages): Use a hash table to remember visited
>> packages instead of calling ‘delete-duplicates’ on the final list.
>
> Thanks for fixing this, commit 4b5dae8 also made
> `guix graph -t reverse-package` much slower, because `delete-duplicates`
> had not been used in the old `all-packages` procedure before. I wanted
> to make a patch, but then saw your series already. :)

Yes, my bad!  I tried to take the common denominator of all the
‘all-packages’ procedures, and here’s what happens.  :-)

Ludo’.

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