[bug#74882] [PATCH] scripts: substitute: Refine 'updating substitutes' message.

[Maxim Cournoyer <maxim.cournoyer@gmail.com>]

Hi Felix,

Felix Lechner <felix.lechner@lease-up.com> writes:

> Hi,
>
> On Wed, Dec 18 2024, Maxim Cournoyer wrote:
>
>> Done, see commit 3607e4cb0c.
>
> Thanks for all the hard work.  Changing the message, however, does not
> address my concern.
>
> My issue is that substitute servers are queried too often---and possibly
> for the same packages after they were already found somewhere else.
>
> I have a lot of substitute servers because I run a custom version of
> Eudev, which in turn rebuilds much of Guix.  Since I cannot, in general,
> rely on the official substitute network, I cross-publish my stores
> locally to minimize the local build effort.
>
> Many system updates spend more than half the time on querying substitute
> servers.  Changing the message does not address that issue.  Thanks!

Did you open an issue for it in the bug tracker?  It'd be nice to have
the full context preserved.  This is a probably tricky issue to
reproduce (due to setup) and debug, so I don't expect it to be resolved
in a 5 min debug session; documenting it is key, especially if you know
of a relatively simple way to reproduce it.

Note there are various reports of problems with substitute, e.g. #51472.
You may want to search the open issues to cross-reference your problem.

Thank you!

-- 
Maxim