From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludo@gnu.org (Ludovic =?UTF-8?Q?Court=C3=A8s?=)
Subject: bug#23307: VLC does not build deterministically
Date: Mon, 18 Apr 2016 15:42:15 +0200
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ludo@gnu.org (Ludovic Court=C3=A8s) skribis:

> Commit 4ef2721b52c4929aac15db4f8b39702cd37955a1 fixed an obvious
> timestamp-related reproducibility issue in VLC 2.2.1, but there remains
> a problem with the =E2=80=98lib/vlc/plugins/plugins.dat=E2=80=99 whose co=
ntents differ
> across rebuilds by a few 32-bit values (see attached diffoscope output.)
>
> The =E2=80=98plugins.dat=E2=80=99 file is generated by this rule in bin/M=
akefile.am:
>
> ../modules/plugins.dat: vlc-cache-gen$(EXEEXT)
> 	$(AM_V_at)rm -f ../modules/plugins.dat
> 	$(AM_V_GEN)if test "$(build)" =3D "$(host)"; then \
> 		./vlc-cache-gen$(EXEEXT) ../modules ; \
> 	else \
> 		echo "Cross-compilation: cache generation skipped!" ; \
> 	fi

Turned out to be simple:

  http://git.savannah.gnu.org/cgit/guix.git/commit/?id=3Dcd76fbde6f70a6c008=
7f9330c266d51e334a0679

Ludo=E2=80=99.