# Ask if a mirror should be used if the base system can be installed from CD.
if [ -e /cdrom/.disk/base_installable ] || [ "$OVERRIDE_BASE_INSTALLABLE" ]; then
if search-path choose-mirror; then
db_input medium apt-setup/use_mirror || [ $? -eq 30 ]
db_go || exit 10
else
warning "choose-mirror is not available; cannot offer network mirror"
exit 1
fi
db_get apt-setup/use_mirror
if [ "$RET" = false ]; then
exit 1
fi
if db_get cdrom/codename && [ "$RET" ]; then
db_set mirror/codename $RET
fi
if db_get cdrom/suite && [ "$RET" ]; then
db_set mirror/suite $RET
fi
choose-mirror -n # no progress bar
fi