On Mon, Nov 28, 2016 at 12:15:01AM +0100, Tobias Geerinckx-Rice wrote:
> There seems to be some misunderstanding here. Sorry if it wasn't clear:
> this (libjpeg-turbo) was *already* bundled and used by icecat, as the
> ‘media/libjpeg’ (sic) that this patch removes. You'll find the same SIMD
> code there. For the quote above is missing:

Ah, thanks for the clarification.

> > ;; Fails with "libjpeg-turbo JCS_EXTENSIONS required".
> 
> Translation: icecat wouldn't build with Guix's ‘libjpeg’ even if we'd
> want that.
> 
> And we don't. This isn't some dodgy go-faster fork of IJG's ‘real’
> libjpeg. It's intended as a sane alternative to the IJG library, albeit
> one that doesn't implement every recent extension. It detects CPU
> features at runtime — although they're the status quo now, as Andreas
> notes — and falls back to other algorithms that might still be faster.
> 
> Dang it. I thought I wrote good (description)s. :-(

The description is excellent. Thanks for putting up with my
misunderstanding :)