Bug#1147469: reproducible-builds: must not set 'nocheck' on only one build

[Holger Levsen]

hi Thorsten,

On Sat, Sep 12, 2026 at 06:39:18AM +0200, Thorsten Glaser wrote:
> I’ve recently found out that reproducible-builds nowadays fails
> packages which produce different output when 'nocheck' is set vs.
> unset.

just to be clear, are you talking about https://reproduce.debian.net/
or https://tests.reproducible-builds.org/debian/ ?

(the diff is explained on top of https://reproduce.debian.net/)
 
> This is wrong.
> 
> If (if!) a 'nocheck' build *profile* is supported by the package,
> then, if that build *profile* is set, the binary packages may not
> differ.
> 
> But the 'nocheck' build option *is* allowed to have binary
> differences, and this is something important for various corner
> cases.

i'm not sure you are correct here (you might well be!), so i'm 
wondering: where is this documented?
 
> So, please add it to DEB_BUILD_OPTIONS on either no or all builds,
> and investigate into setting the 'nocheck' build *profile* on only
> one build *iff* the package supports it. I’m not exactly sure how
> to actually test for that, but if it only gets added to the variable
> DEB_BUILD_PROFILES but not DEB_BUILD_OPTIONS, then it can just be
> ignored by packages not supporting the 'nocheck' *profile*.

ack.


-- 
cheers,
	Holger

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