installer: Ask for user password and initialize /etc/shadow.

Partly fixes <https://bugs.gnu.org/35399>.

* gnu/installer/user.scm (<user>)[password]: New field.
* gnu/installer/final.scm (%seed): New variable.
(integer->alphanumeric-char, random-string)
(create-user-database): New procedures.
(install-system): Call 'create-user-database'.
* gnu/installer/newt/final.scm (run-install-shell): Add #:users and pass
it to 'install-system'.
(run-final-page): Pass #:users to 'run-install-shell'.
* gnu/installer/newt/user.scm (run-user-add-page): Add password entry.
Pass its result as the 'password' field of <user>.

2 files changed, 21 insertions, 9 deletions

diff --git a/gnu/installer/newt/final.scm b/gnu/installer/newt/final.scm
index f492c5dbb7..f470a90004 100644
--- a/gnu/installer/newt/final.scm
+++ b/gnu/installer/newt/final.scm
@@ -1,5 +1,6 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2018 Mathieu Othacehe <m.othacehe@gmail.com>
+;;; Copyright © 2019 Ludovic Courtès <ludo@gnu.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -65,10 +66,11 @@ press the button to reboot.")))
    (G_ "The final system installation step failed.  You can retry the \
 last step, or restart the installer.")))
 
-(define (run-install-shell locale)
+(define* (run-install-shell locale
+                            #:key (users '()))
   (clear-screen)
   (newt-suspend)
-  (let ((install-ok? (install-system locale)))
+  (let ((install-ok? (install-system locale #:users users)))
     (newt-resume)
     install-ok?))
 
@@ -76,12 +78,13 @@ last step, or restart the installer.")))
   (let* ((configuration   (format-configuration prev-steps result))
          (user-partitions (result-step result 'partition))
          (locale          (result-step result 'locale))
+         (users           (result-step result 'user))
          (install-ok?
           (with-mounted-partitions
            user-partitions
            (configuration->file configuration)
            (run-config-display-page)
-           (run-install-shell locale))))
+           (run-install-shell locale #:users users))))
     (if install-ok?
         (run-install-success-page)
         (run-install-failed-page))))
diff --git a/gnu/installer/newt/user.scm b/gnu/installer/newt/user.scm
index 59b1913cfc..032f9b9276 100644
--- a/gnu/installer/newt/user.scm
+++ b/gnu/installer/newt/user.scm
@@ -1,5 +1,6 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2018 Mathieu Othacehe <m.othacehe@gmail.com>
+;;; Copyright © 2019 Ludovic Courtès <ludo@gnu.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -36,10 +37,14 @@
           (make-label -1 -1 (pad-label (G_ "Name"))))
          (label-home-directory
           (make-label -1 -1 (pad-label (G_ "Home directory"))))
+         (label-password
+          (make-label -1 -1 (pad-label (G_ "Password"))))
          (entry-width 30)
          (entry-name (make-entry -1 -1 entry-width))
          (entry-home-directory (make-entry -1 -1 entry-width))
-         (entry-grid (make-grid 2 2))
+         (entry-password (make-entry -1 -1 entry-width
+                                     #:flags FLAG-PASSWORD))
+         (entry-grid (make-grid 3 4))
          (button-grid (make-grid 1 1))
          (ok-button (make-button -1 -1 (G_ "OK")))
          (grid (make-grid 1 2))
@@ -52,6 +57,8 @@
     (set-entry-grid-field 1 0 entry-name)
     (set-entry-grid-field 0 1 label-home-directory)
     (set-entry-grid-field 1 1 entry-home-directory)
+    (set-entry-grid-field 0 2 label-password)
+    (set-entry-grid-field 1 2 entry-password)
 
     (set-grid-field button-grid 0 0 GRID-ELEMENT-COMPONENT ok-button)
 
@@ -62,8 +69,8 @@
                        (string-append "/home/" (entry-value entry-name)))))
 
     (add-components-to-form form
-                            label-name label-home-directory
-                            entry-name entry-home-directory
+                            label-name label-home-directory label-password
+                            entry-name entry-home-directory entry-password
                             ok-button)
 
     (make-wrapped-grid-window (vertically-stacked-grid
@@ -82,8 +89,9 @@
             (when (eq? exit-reason 'exit-component)
               (cond
                ((components=? argument ok-button)
-                (let ((name (entry-value entry-name))
-                      (home-directory (entry-value entry-home-directory)))
+                (let ((name           (entry-value entry-name))
+                      (home-directory (entry-value entry-home-directory))
+                      (password       (entry-value entry-password)))
                   (if (or (string=? name "")
                           (string=? home-directory ""))
                       (begin
@@ -91,7 +99,8 @@
                         (run-user-add-page))
                       (user
                        (name name)
-                       (home-directory home-directory))))))))
+                       (home-directory home-directory)
+                       (password password))))))))
           (lambda ()
             (destroy-form-and-pop form)))))))