From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ludovic =?UTF-8?Q?Court=C3=A8s?= <ludo@gnu.org>
Subject: bug#35683: wishlist: addessing statefulness of .cache(s)
Date: Tue, 14 May 2019 09:47:55 +0200
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	<20190512113242.583f9229@scratchpost.org>
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To: Danny Milosavljevic <dannym@scratchpost.org>
Cc: 35683@debbugs.gnu.org

Hi Danny,

Danny Milosavljevic <dannym@scratchpost.org> skribis:

> Better would be if the cache directory contained a "cache-protocol-versio=
n"
> file or something and make the client program heed it and make it clear t=
he
> cache if it's the wrong version, without any Guix special case (the probl=
em
> is not not Guix-specific anyway).

I=E2=80=99d be surprised if applications and libraries using ~/.cache such =
as
Mesa didn=E2=80=99t have some versioning mechanism allowing them to detect =
stale
cache files.  Overall, Guix isn=E2=80=99t special in that respect.

The problem we experienced with Mesa shader caches are probably not
Guix-specific.  I think we should try to gather more info about the
stale .cache files that trigger a Mesa crash so that we can make a
useful bug report to the Mesa developers.

(I=E2=80=99m saying this as someone who did not experience the crash, heheh=
.  :-))

Thoughts?

Thanks,
Ludo=E2=80=99.