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Date: Fri, 3 Nov 2023 14:08:16 +0100
From: Tomas Volf <~@wolfsden.cz>
To: Suhail <suhail@bayesians.ca>
Cc: Simon Tournier <zimon.toutoune@gmail.com>,
 Felix Lechner via <help-guix@gnu.org>,
 Julien Lepiller <julien@lepiller.eu>,
 Felix Lechner <felix.lechner@lease-up.com>
Subject: Re: Turning off tests leads to a different store item
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On 2023-11-02 15:25:33 +0000, Suhail wrote:
> [..]
>=20
> The hypothetical test derivation leaves the build artifact unchanged,
> but does communicate some "side" information. It's like a fixed-output
> derivation carrying some metadata (further elaboration below).

I am not aware of any, but I wonder if there are test suites that actually
modify the built binary, for example by patching a bool flag `was_tested' t=
o #t.
Runtime behavior could then differ based on the flag.  Do you have some ide=
as
how to detect/deal with this?

T.
--=20
There are only two hard things in Computer Science:
cache invalidation, naming things and off-by-one errors.

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