services: openssh: Replace 'without-password' by 'prohibit-password'.

For some time, OpenSSH's option 'PermitRootLogin' has deprecated the
ambiguous argument 'without-password' with 'prohibit-password'.

* doc/guix.texi (Network Services): Replace 'without-password by
'prohibit-password.
* gnu/machine/digital-ocean.scm (guix-infect): Change system
configuration to use 'prohibit-password.
* gnu/services/ssh.scm (openssh-configuration): Change comment to use
'prohibit-password.
(openssh-config-file): Add support for 'prohibit-password to
'permit-root-login'.  Warn about deprecated 'without-password usage.
* gnu/tests/ganeti.scm (%ganeti-os): Replace 'without-password by
'prohibit-password.

Signed-off-by: Tobias Geerinckx-Rice <me@tobias.gr>

doc/guix.texi

@@ -17070,7 +17070,7 @@ shell daemon, @command{sshd}.  Its value must be an
 (service openssh-service-type
          (openssh-configuration
            (x11-forwarding? #t)
-           (permit-root-login 'without-password)
+           (permit-root-login 'prohibit-password)
            (authorized-keys
              `(("alice" ,(local-file "alice.pub"))
                ("bob" ,(local-file "bob.pub"))))))
@@ -17104,7 +17104,7 @@ TCP port on which @command{sshd} listens for incoming connections.
 @item @code{permit-root-login} (default: @code{#f})
 This field determines whether and when to allow logins as root.  If
 @code{#f}, root logins are disallowed; if @code{#t}, they are allowed.
-If it's the symbol @code{'without-password}, then root logins are
+If it's the symbol @code{'prohibit-password}, then root logins are
 permitted but not with password-based authentication.
 
 @item @code{allow-empty-passwords?} (default: @code{#f})
@@ -29333,7 +29333,7 @@ cluster node that supports multiple storage backends, and installs the
                  ;; Ganeti uses SSH to communicate between nodes.
                  (service openssh-service-type
                           (openssh-configuration
-                           (permit-root-login 'without-password)))
+                           (permit-root-login 'prohibit-password)))
 
                  (service ganeti-service-type
                           (ganeti-configuration

gnu/machine/digital-ocean.scm

@@ -1,5 +1,6 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2019 Jakob L. Kreuze <zerodaysfordays@sdf.org>
+;;; Copyright © 2020 Brice Waegeneire <brice@waegenei.re>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -256,7 +257,7 @@ cat > /etc/bootstrap-config.scm << EOF
                  (service openssh-service-type
                           (openssh-configuration
                            (log-level 'debug)
-                           (permit-root-login 'without-password))))
+                           (permit-root-login 'prohibit-password))))
            %base-services)))
 EOF
 # guix pull

gnu/services/ssh.scm

@@ -6,6 +6,8 @@
 ;;; Copyright © 2019 Ricardo Wurmus <rekado@elephly.net>
 ;;; Copyright © 2020 pinoaffe <pinoaffe@airmail.cc>
 ;;; Copyright © 2020 Oleg Pykhalov <go.wigust@gmail.com>
+;;; Copyright © 2020 Brice Waegeneire <brice@waegenei.re>
+;;; Copyright © 2021 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -30,6 +32,7 @@
   #:use-module (gnu services web)
   #:use-module (gnu system pam)
   #:use-module (gnu system shadow)
+  #:use-module (guix deprecation)
   #:use-module (guix gexp)
   #:use-module (guix records)
   #:use-module (guix modules)
@@ -288,7 +291,7 @@ The other options should be self-descriptive."
   ;; integer
   (port-number           openssh-configuration-port-number
                          (default 22))
-  ;; Boolean | 'without-password
+  ;; Boolean | 'prohibit-password
   (permit-root-login     openssh-configuration-permit-root-login
                          (default #f))
   ;; Boolean
@@ -441,7 +444,11 @@ of user-name/file-like tuples."
                    #$(match (openssh-configuration-permit-root-login config)
                        (#t "yes")
                        (#f "no")
-                       ('without-password "without-password")))
+                       ('without-password (warn-about-deprecation
+                                           'without-password #f
+                                           #:replacement 'prohibit-password)
+                                          "prohibit-password")
+                       ('prohibit-password "prohibit-password")))
            (format port "PermitEmptyPasswords ~a\n"
                    #$(if (openssh-configuration-allow-empty-passwords? config)
                          "yes" "no"))

gnu/tests/ganeti.scm

@@ -1,5 +1,6 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2020 Marius Bakke <marius@gnu.org>.
+;;; Copyright © 2020 Brice Waegeneire <brice@waegenei.re>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -65,7 +66,7 @@
 
                    (service openssh-service-type
                             (openssh-configuration
-                             (permit-root-login 'without-password)))
+                             (permit-root-login 'prohibit-password)))
 
                    (service ganeti-service-type
                             (ganeti-configuration