GNU bug report logs - #48373
vice: processor dependency?

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Message #11 received at 48373 <at> debbugs.gnu.org (full text, mbox):

From: Brendan Tildesley <btild <at> mailbox.org>
To: "48373 <at> debbugs.gnu.org" <48373 <at> debbugs.gnu.org>
Cc: Christopher Howard <christopher <at> librehacker.com>
Subject: Re: vice: processor dependency
Date: Wed, 12 May 2021 17:08:06 +0200 (CEST)

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I'm curious the guix version would also build differently on your computer.
You can run for example

guix build vice --no-grafts --check

to build it from source and check the difference. if its different, something like

guix gc -D $(guix build --no-grafts vice); guix build --no-substitutes vice

should delete it and built it from source without using the prebuilt binary.
If it's different then its a reproducibility bug. Some packages are actually
intended to be that way, like atlas, and have substitutable? #f set so that
they are always built and tuned to the cpu it's used on.

On my computer, AMD 5700X, the built is identical to the substitute:

b <at> jiu ~/code/guix [env]$ guix challenge vice

1 store items were analyzed:
- 1 (100.0%) were identical
- 0 (0.0%) differed
- 0 (0.0%) were inconclusive

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