Features:
  ++ second stage via chroot debootstrap/debootstrap
  ++ debootstrap/deb file to record deb destinations/information

  -- configuration file
      -- versus command line
      -- support for sources (vs mirrors)
      -- faux-pinning for packages 

  ++ merge variants into single script (optionally anyway)
  ++ makedev in second stage
  ++ awk/perl pkgdetails
  ++ granular dpkg progress bar
  ++ determine required/base dynamically
      ++ store required/base in $T/debootstrap for two-stage installs

Packages format:
  std: Priority: required + Priority: important
  buildd: Priority: required + Build-Essential: yes