installer: Move <secret> to utils and use it for crypt passwords.

* gnu/installer/user.scm (<secret>, secret?, make-secret, secret-content): Move
to utils.scm.
* gnu/installer/utils.scm (<secret>, secret?, make-secret, secret-content):
Moved from user.scm.
* gnu/installer/newt/partition.scm (prompt-luks-passwords): Make password a
<secret>.
* gnu/installer/parted.scm (luks-format-and-open): Unwrap secret.

Signed-off-by: Mathieu Othacehe <othacehe@gnu.org>

gnu/installer/newt/partition.scm

@@ -188,7 +188,7 @@ encryption of partition ~a (label: ~a).") file-name crypt-label)
                    (if (string=? password confirmation)
                        (user-partition
                         (inherit user-part)
-                        (crypt-password password))
+                        (crypt-password (make-secret password)))
                        (begin
                          (run-error-page
                           (G_ "Password mismatch, please try again.")

gnu/installer/parted.scm

@@ -148,7 +148,7 @@
                         (default #f))
   (crypt-label          user-partition-crypt-label
                         (default #f))
-  (crypt-password       user-partition-crypt-password
+  (crypt-password       user-partition-crypt-password ; <secret>
                         (default #f))
   (fs-type              user-partition-fs-type
                         (default 'ext4))
@@ -1183,7 +1183,7 @@ USER-PARTITION if it is encrypted, or the plain file-name otherwise."
   "Format and open the encrypted partition pointed by USER-PARTITION."
   (let* ((file-name (user-partition-file-name user-partition))
          (label (user-partition-crypt-label user-partition))
-         (password (user-partition-crypt-password user-partition)))
+         (password (secret-content (user-partition-crypt-password user-partition))))
     (call-with-luks-key-file
      password
      (lambda (key-file)

gnu/installer/user.scm

@@ -17,17 +17,13 @@
 ;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
 
 (define-module (gnu installer user)
+  #:use-module (gnu installer utils)
   #:use-module (guix records)
   #:use-module (guix read-print)
   #:use-module (srfi srfi-1)
   #:use-module (srfi srfi-9)
   #:use-module (srfi srfi-9 gnu)
-  #:export (<secret>
-            secret?
-            make-secret
-            secret-content
-
-            <user>
+  #:export (<user>
             user
             make-user
             user-name
@@ -38,16 +34,6 @@
 
             users->configuration))
 
-(define-record-type <secret>
-  (make-secret content)
-  secret?
-  (content secret-content))
-
-(set-record-type-printer!
- <secret>
- (lambda (secret port)
-   (format port "<secret>")))
-
 (define-record-type* <user>
   user make-user
   user?

gnu/installer/utils.scm

@@ -23,6 +23,8 @@
   #:use-module (guix build utils)
   #:use-module (guix i18n)
   #:use-module (srfi srfi-1)
+  #:use-module (srfi srfi-9)
+  #:use-module (srfi srfi-9 gnu)
   #:use-module (srfi srfi-19)
   #:use-module (srfi srfi-34)
   #:use-module (srfi srfi-35)
@@ -33,7 +35,12 @@
   #:use-module (ice-9 regex)
   #:use-module (ice-9 format)
   #:use-module (ice-9 textual-ports)
-  #:export (read-lines
+  #:export (<secret>
+            secret?
+            make-secret
+            secret-content
+
+            read-lines
             read-all
             nearest-exact-integer
             read-percentage
@@ -58,6 +65,16 @@
 
             with-silent-shepherd))
 
+(define-record-type <secret>
+  (make-secret content)
+  secret?
+  (content secret-content))
+
+(set-record-type-printer!
+ <secret>
+ (lambda (secret port)
+   (format port "<secret>")))
+
 (define* (read-lines #:optional (port (current-input-port)))
   "Read lines from PORT and return them as a list."
   (let loop ((line (read-line port))