- Mention --enable-kernel=... where appropriate.
 - POSIX compliance patches (aka, removing the coreutils hack).
 - Pass --enable-const (and maybe --enable-widec) to ncurses.
 - Use that E2fsprogs patch to include Readline support in debugfs.
 - See about removing some things from Chapter 5, like patch. We can build
   those at the beginning of chapter 6 and have one less package to