Jonathan, Guix,

There's no way around this: zisofs is an old (2004-ish?) standard 
and it's limited to zlib.  Calling XZ on the result as we do now 
is still worthwhile but not efficient.

Ludovic Courtès 写道：
> I think the download size also matters, though to a lesser 
> extent.

This is also my opinion.

> It’d be ideal if we could have our cake and eat it too, but at 
> any rate
> the ISO size improvement is welcome!

Cake will be served once I (or someone else) get squashfs boot 
working reliably.  We'll no longer *have* an ‘uncompressed’ ISO at 
that point, we'll boot directly from XZ.

But that first requires support for (real) unencrypted /boot.

Kind regards,

T G-R