Make disk encryption optional

lib/apps/nixos-install.sh

@@ -95,11 +95,13 @@ partition() {
 }
 
 echo '12'
-create_volumes() {
-    _log "[create_volumes] Encrypting LVM partition..."
+encrypt_partition() {
+    _log "[encrypt_partition] Encrypting LVM partition..."
     cryptsetup luksFormat "${LVM_PARTITION}"
     cryptsetup luksOpen "${LVM_PARTITION}" "${LVM_PV}"
+}
 
+create_volumes() {
     _log "[create_volumes] Creating LVM volumes..."
     pvcreate "/dev/mapper/${LVM_PV}"
     vgcreate "${LVM_VG}" "/dev/mapper/${LVM_PV}"
@@ -160,9 +162,20 @@ install() {
 ### Pull the trigger
 
 echo '16'
-# shellcheck disable=SC2310
-if _read_boolean "Do you want to DELETE ALL PARTITIONS?" N; then
+DO_PARTITION="$(_read_boolean "Do you want to DELETE ALL PARTITIONS?" N)"
+readonly DO_PARTITION
+if "${DO_PARTITION}"; then
     partition
+fi
+
+echo '16-1'
+DO_ENCRYPT="$(_read_boolean "Do you want to ENCRYPT THE DISK?" N)"
+readonly DO_ENCRYPT
+if "${DO_ENCRYPT}"; then
+    encrypt_partition
+fi
+
+if "${DO_PARTITION}"; then
     create_volumes
     create_filesystems
 fi
@@ -177,8 +190,9 @@ if [[ ${LVM_PV_NUM_ACTIVE} -lt 1 ]]; then
 fi
 
 echo '18'
-# shellcheck disable=SC2310
-if _read_boolean "Do you want to INSTALL NixOS now?" N; then
+DO_INSTALL="$(_read_boolean "Do you want to INSTALL NixOS now?" N)"
+readonly DO_INSTALL
+if "${DO_INSTALL}"; then
     install
 fi