Request regarding SquashFS documentation

[Holger Levsen]

Hi Larry,

On Sat, Apr 23, 2022 at 09:53:11PM -0700, Larry Doolittle wrote:
> In https://reproducible-builds.org/docs/system-images/ there's a paragraph
> about SquashFS metadata & compression.  It's superficially OK, but points
> to IMHO an obsolete fork of mksquashfs.  No offense to lynxis!  He did
> a good job getting usable tools in our hands early on.  But the main
> squashfs-tools project has caught up, specifically version 4.5.1 that's now
> in Debian testing.  I've used it (and some predecessor versions) for a while
> now, and its output is demonstrably reproducible IRL.  (If I'm wrong, please
> let me and the squashfs-tools developers know!)

oh, nice, thanks for informing us!

> Here's my attempt to rewrite that paragraph.
> 
> When building SquashFS images, older versions of the tools sometimes
> yielded unreproducible results.  A good mksquashfs will
>  * honor $SOURCE_DATE_EPOCH for various timestamps
>  * clamp content timestamps to $SOURCE_DATE_EPOCH
>  * not reorder fragments based on multithreading conditions
> (squashfs-tools)[https://github.com/plougher/squashfs-tools] 4.5.1 
> (in Debian Bookworm) is good here,
> having absorbed important features from 
> (squashfskit)[https://github.com/squashfskit/squashfskit]

sounds good. could you please provide a patch for
https://salsa.debian.org/reproducible-builds/reproducible-website
to ease mergeing this?


-- 
cheers,
	Holger

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