[Reproducible-builds] Bug#805321: Bug#805321: debian-installer: builds unreproducible netboot images

[Cyril Brulebois]

Cyril Brulebois <kibi at debian.org> (2015-11-26):
> I've cherry-picked 3 patches from there onto master locally and I'm
> currently running diffoscope to see how that goes (and it's taking
> ages…):
>   c182491b05fec16497f2bf1290cac16773d175f9
>   5d59fd1813e794d0821c00757dd56fd9ca25ed16
>   d126622567cfbe10d7f8a207a292eaab622ef73e

The following files are different after two builds with debuild -b once
the 3 commits are applied:
./installer-amd64/20151024/images/cdrom/gtk/debian-cd_info.tar.gz
./installer-amd64/20151024/images/cdrom/gtk/initrd.gz
./installer-amd64/20151024/images/cdrom/initrd.gz
./installer-amd64/20151024/images/hd-media/boot.img.gz
./installer-amd64/20151024/images/hd-media/gtk/initrd.gz
./installer-amd64/20151024/images/hd-media/initrd.gz
./installer-amd64/20151024/images/netboot/debian-installer/amd64/initrd.gz
./installer-amd64/20151024/images/netboot/gtk/debian-installer/amd64/initrd.gz
./installer-amd64/20151024/images/netboot/gtk/netboot.tar.gz
./installer-amd64/20151024/images/netboot/netboot.tar.gz

I see at least timestamp issues in initramfses; this might be due to the
fact that pigz (installed in my development chroots) seems to need both
-n and -T to behave like gzip's -n.

I might poke a bit more around this before pushing.

Mraw,
KiBi.
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