Manage crypttab only if LUKS is present

debian/chroot.install

@@ -235,9 +235,11 @@ mountpoint -q /target/run/udev   || mount --bind      -- /run/udev /target/run/u
 ### }}}
 ## }}}
 ## Luks {{{
+if [ "${manage_luks}" -eq 0 ]; then
 	luks_part_uuid=$(blkid | grep "${hdd}2.*TYPE=\"crypto_LUKS\"" | sed 's/.*UUID="\(.*\)" TYPE.*/\1/')
 	### Ensure crypttab file contains the LUKS informations
 	printf '%b\n' "${luks_pv_name} UUID=${luks_part_uuid} none luks,discard" >> /target/etc/crypttab
+fi
 
 ### Regenerate initramfs
 chroot /target update-initramfs -k all -u