[arch-general] difference between arch-nspawn and mkarchroot?

[David C. Rankin]

Devs,

  DeveloperWiki:Building_in_a_Clean_Chroot notes that updating the chroot is now
done by:

  arch-nspawn $CHROOT/root pacman -Syu

instead of

  mkarchroot -u $CHROOT/root

  Checking the help for both files I note (1) the -u option is dropped from
mkarchroot, and (2) the help output for both arch-nspawn and mkarchroot are
identical. So what is the difference between the two?

-- 
David C. Rankin, J.D.,P.E.