Mine

# vim: set ft=sh:

install ()
{
    MODULES=" $(checked_modules '/kernel/fs' | grep -v "nls") $(checked_modules '/kernel/fs/nls/nls_cp437')"
    BINARIES=""
    FILES=""
    SCRIPT="filesystems"
}

help ()
{
cat<<HELPEOF
  This hook is responsible for loading filesystems for the root device.
  Detection will be done at runtime.  If you would like to minimize the
  modules installed in the image, add the autodetect hook too.
HELPEOF
}