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bug#20272: Support reproducible builds
From: |
Ludovic Courtès |
Subject: |
bug#20272: Support reproducible builds |
Date: |
Wed, 14 Dec 2016 17:25:38 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/25.1 (gnu/linux) |
Hello Jan!
Jan Nieuwenhuizen <address@hidden> skribis:
> I have been building quite some versions of Guile the past week. There
> re a couple of .go files that keep giving me problems wrt
> nondeterminism:
>
> web/server/http.go
>
> (define *timer* (gettimeofday)) seemed suspect, but seems harmless.
>
> rnrs/arithmetic/fixnums.go
>
> make-implementation-restriction-violation seemed suspect, but commenting
> it out does not seem to help.
>
> After commenting out all of http.scm and fixnums.scm, yesterday I had 3
> Guix builds on two machines (GuixSD and one Ubuntu+Guix) that were
> bit-identical, but one build showed differences in
>
> system/repl/commands.go
>
> Apparently most of the time this file builds deterministicly, but some
> times it does not!? Ideas?
Did you look at these differences with diffoscope? That would be
useful.
> In the mean time, one more obviously correct and trivial patch attatched
> that removes a build time stamp.
I’ve committed something similar but that honors ‘SOURCE_DATE_EPOCH’.
So by default there’s no difference compared to the previous behavior,
but if ‘SOURCE_DATE_EPOCH’ is given, then it is used as the build date.
Thanks!
Ludo’.
- bug#20272: Support reproducible builds,
Ludovic Courtès <=