From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ludovic =?UTF-8?Q?Court=C3=A8s?= <ludo@gnu.org>
Subject: bug#21803: guitarix non-reproducible hard to reproduce
Date: Sat, 16 Nov 2019 17:12:18 +0100
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 (zimoun's message of "Fri, 15 Nov 2019 20:46:13 +0100")
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To: zimoun <zimon.toutoune@gmail.com>
Cc: 21803@debbugs.gnu.org

Hello!

zimoun <zimon.toutoune@gmail.com> skribis:

> My intuition is: the non-determinism comes from the WAF configuration
> files (./waf or wscript or wafadmin/).
>
> The process conditionally enters in functions such as "do_install" or
> "symlink_as", so maybe something is hidden by Python module "os" or
> similar. Moreover, note that wscript:l.990 "add_group()" is used after
> "add_subdirs('libgxw/gxw')".

My intuition :-) is that waf traverses files using directly
opendir/readdir, which returns files in an order that=E2=80=99s file
system-dependent.  That, in turn, leads it to make .so a symlink or not
in a non-deterministic fashion.

So I would suggest looking for uses of =E2=80=98readdir=E2=80=99 (or anythi=
ng equivalent
in Python).

It would also be worth checking what others involved in the Reproducible
Builds effort have done (Debian, openSuSE, etc.).

Thanks,
Ludo=E2=80=99.