[ "$_opt_interactive" ] && INTERACTIVE=1
[ "$_opt_config" ] && CONFIGFILE=$_opt_config
[ "$_opt_packages_set" ] && PACKAGES='yes'
+[ "$_opt_nopackages" ] && PACKAGES=''
[ "$_opt_debconf_set" ] && DEBCONF='yes'
[ "$_opt_scripts_set" ] && SCRIPTS='yes'
[ "$_opt_pre_scripts_set" ] && PRE_SCRIPTS='yes'