Re: Idea for implementing reproducible builds

[Andreas Reichel <andreas.reichel.ext@siemens.com>]

On Tue, May 22, 2018 at 01:55:21PM +0200, [ext] Claudius Heine wrote:
> Hi,
> 
> I am still working on reproducible builds and here is my current idea to
> solve this.
> 
> Simple put: Mount the /var/cache/apt/archives of the images and buildchroot
> to the isar-bootstrap root file system and then create a tarball of it. This
> way we have a tarball of the build just after debootstrap + upgrade with the
> one 'apt update' step done, but without any other changes to it and all used
> packages already in the apt package cache.
> 
> When restoring just skip most of the isar-bootstrap steps and extract the
> tarball instead, since the packages are available in the package cache and
> the package index is not updated it will use the packages from the cache.
> 
> This way we would side step the obstacle to make debootstrap reproducible by
> just using its product while the reset of the process can be redone by isar.
"while the reset of the process can be redone by Isar."
I think I did not understand that exactly :)

Andreas

> 
> Is this solution enough? Or are you seeing any problem with this approach?
> 
> Claudius
> 
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-- 
Andreas Reichel
Dipl.-Phys. (Univ.)
Software Consultant

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