Revert "services: Add xvnc-service-type."

This reverts commit 1c528a95cb92b7808e6603d7956185005583629f.  This broke
'guix pull', for (yet) unknown reasons.

4 files changed, 4 insertions, 608 deletions

diff --git a/doc/guix.texi b/doc/guix.texi
index 14592142dd..27f63904cd 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -17554,7 +17554,6 @@ declaration.
 * Web Services::                Web servers.
 * Certificate Services::        TLS certificates via Let's Encrypt.
 * DNS Services::                DNS daemons.
-* VNC Services::                VNC daemons.
 * VPN Services::                VPN daemons.
 * Network File System::         NFS related services.
 * Samba Services::              Samba services.
@@ -21063,7 +21062,6 @@ started by the @dfn{login manager}, by default the GNOME Display Manager (GDM).
 
 @cindex GDM
 @cindex GNOME, login manager
-@anchor{gdm}
 GDM of course allows users to log in into window managers and desktop
 environments other than GNOME; for those using GNOME, GDM is required for
 features such as automatic screen locking.
@@ -21365,7 +21363,6 @@ Relogin after logout.
 
 @cindex lightdm, graphical login manager
 @cindex display manager, lightdm
-@anchor{lightdm}
 @defvr {Scheme Variable} lightdm-service-type
 This is the type of the service to run the
 @url{https://github.com/canonical/lightdm,LightDM display manager}.  Its
@@ -21569,11 +21566,10 @@ Extra configuration values to append to the seat configuration section.
 
 @cindex Xorg, configuration
 @deftp {Data Type} xorg-configuration
-This data type represents the configuration of the Xorg graphical
-display server.  Note that there is no Xorg service; instead, the X
-server is started by a ``display manager'' such as GDM, SDDM, LightDM or
-SLiM@.  Thus, the configuration of these display managers aggregates an
-@code{xorg-configuration} record.
+This data type represents the configuration of the Xorg graphical display
+server.  Note that there is no Xorg service; instead, the X server is started
+by a ``display manager'' such as GDM, SDDM, and SLiM@.  Thus, the configuration
+of these display managers aggregates an @code{xorg-configuration} record.
 
 @table @asis
 @item @code{modules} (default: @code{%default-xorg-modules})
@@ -30840,157 +30836,6 @@ Defaults to @samp{()}.
 
 @c %end of fragment
 
-@node VNC Services
-@subsection VNC Services
-@cindex VNC (virtual network computing)
-@cindex XDMCP (x display manager control protocol)
-
-The @code{(gnu services vnc)} module provides services related to
-@dfn{Virtual Network Computing} (VNC), which makes it possible to
-locally use graphical Xorg applications running on a remote machine.
-Combined with a graphical manager that supports the @dfn{X Display
-Manager Control Protocol}, such as GDM (@pxref{gdm}) or LightDM
-(@pxref{lightdm}), it is possible to remote an entire desktop for a
-multi-user environment.
-
-@subsubheading Xvnc
-
-Xvnc is a VNC server that spawns its own X window server; which means it
-can run on headless servers.  The Xvnc implementations provided by the
-@code{tigervnc-server} and @code{turbovnc} aim to be fast and efficient.
-
-@defvar {Scheme Variable} xvnc-service-type
-
-The @code{xvnc-server-type} service can be configured via the
-@code{xvnc-configuration} record, documented below.  A second virtual
-display could be made available on a remote machine for via the
-following configuration:
-@end defvar
-
-@lisp
-(service xvnc-service-type (xvnc-configuration (display-number 10)
-@end lisp
-
-As a demonstration, the @command{xclock} command could then be started
-on the remote machine on display number 10, and it could be display
-locally via the @command{vncviewer} command:
-@example
-# Start xclock on the remote machine.
-ssh -L5910:localhost:5910 -- guix shell xclock -- env DISPLAY=:10 xclock
-# Access it via VNC.
-guix shell tigervnc-client -- vncviewer localhost:5910
-@end example
-
-The following configuration combines XDMCP and Inetd to allow multiple
-users to concurrently use the remote system, login in graphically via
-the GDM display manager:
-
-@lisp
-(operating-system
-  [...]
-  (services (cons*
-             [...]
-             (service xvnc-service-type (xvnc-configuration
-                                         (display-number 5)
-                                         (localhost? #f)
-                                         (xdmcp? #t)
-                                         (inetd? #t)))
-             (modify-services %desktop-services
-               (gdm-service-type config => (gdm-configuration
-                                            (inherit config)
-                                            (auto-suspend? #f)
-                                            (xdmcp? #t)))))))
-@end lisp
-
-A remote user could then connect to it by using the @command{vncviewer}
-command or a compatible VNC client and start a desktop session of their
-choosing:
-@example
-vncviewer remote-host:5905
-@end example
-
-@quotation Warning
-Unless your machine is in a controlled environment, for security
-reasons, the @code{localhost?} configuration of the
-@code{xvnc-configuration} record should be left to its default @code{#t}
-value and exposed via a secure means such as an SSH port forward.  The
-XDMCP port, UDP 177 should also be blocked from the outside by a
-firewall, as it is not a secure protocol and can expose login
-credentials in clear.
-@end quotation
-
-@c Use (configuration->documentation 'xvnc-configuration) to regenerate
-@c the documentation.
-@c %start of fragment
-@deftp {Data Type} xvnc-configuration
-Available @code{xvnc-configuration} fields are:
-
-@table @asis
-@item @code{xvnc} (default: @code{tigervnc-server}) (type: file-like)
-The package that provides the Xvnc binary.
-
-@item @code{display-number} (default: @code{0}) (type: number)
-The display number used by Xvnc.  You should set this to a number not
-already used a Xorg server.
-
-@item @code{geometry} (default: @code{"1024x768"}) (type: string)
-The size of the desktop to be created.
-
-@item @code{depth} (default: @code{24}) (type: color-depth)
-The pixel depth in bits of the desktop to be created.  Accepted values
-are 16, 24 or 32.
-
-@item @code{port} (type: maybe-port)
-The port on which to listen for connections from viewers.  When left
-unspecified, it defaults to 5900 plus the display number.
-
-@item @code{ipv4?} (default: @code{#t}) (type: boolean)
-Use IPv4 for incoming and outgoing connections.
-
-@item @code{ipv6?} (default: @code{#t}) (type: boolean)
-Use IPv6 for incoming and outgoing connections.
-
-@item @code{password-file} (type: maybe-string)
-The password file to use, if any.  Refer to vncpasswd(1) to learn how to
-generate such a file.
-
-@item @code{xdmcp?} (default: @code{#f}) (type: boolean)
-Query the XDMCP server for a session.  This enables users to log in a
-desktop session from the login manager screen.  For a multiple users
-scenario, you'll want to enable the @code{inetd?} option as well, so
-that each connection to the VNC server is handled separately rather than
-shared.
-
-@item @code{inetd?} (default: @code{#f}) (type: boolean)
-Use an Inetd-style service, which runs the Xvnc server on demand.
-
-@item @code{frame-rate} (default: @code{60}) (type: number)
-The maximum number of updates per second sent to each client.
-
-@item @code{security-types} (default: @code{("None")}) (type: security-types)
-The allowed security schemes to use for incoming connections.  The
-default is "None", which is safe given that Xvnc is configured to
-authenticate the user via the display manager, and only for local
-connections.  Accepted values are any of the following: ("None"
-"VncAuth" "Plain" "TLSNone" "TLSVnc" "TLSPlain" "X509None" "X509Vnc")
-
-@item @code{localhost?} (default: @code{#t}) (type: boolean)
-Only allow connections from the same machine.  It is set to #true by
-default for security, which means SSH or another secure means should be
-used to expose the remote port.
-
-@item @code{log-level} (default: @code{30}) (type: log-level)
-The log level, a number between 0 and 100, 100 meaning most verbose
-output.  The log messages are output to syslog.
-
-@item @code{extra-options} (default: @code{()}) (type: strings)
-This can be used to provide extra Xvnc options not exposed via this
-<xvnc-configuration> record.
-
-@end table
-
-@end deftp
-@c %end of fragment
 
 @node VPN Services
 @subsection VPN Services
diff --git a/gnu/local.mk b/gnu/local.mk
index 698070c639..5976cbe90c 100644
--- a/gnu/local.mk
+++ b/gnu/local.mk
@@ -694,7 +694,6 @@ GNU_SYSTEM_MODULES =				\
   %D%/services/sysctl.scm			\
   %D%/services/telephony.scm			\
   %D%/services/version-control.scm              \
-  %D%/services/vnc.scm				\
   %D%/services/vpn.scm				\
   %D%/services/web.scm				\
   %D%/services/xorg.scm				\
@@ -776,7 +775,6 @@ GNU_SYSTEM_MODULES =				\
   %D%/tests/telephony.scm		        \
   %D%/tests/version-control.scm			\
   %D%/tests/virtualization.scm			\
-  %D%/tests/vnc.scm				\
   %D%/tests/web.scm
 
 INSTALLER_MODULES =                             \
diff --git a/gnu/services/vnc.scm b/gnu/services/vnc.scm
deleted file mode 100644
index 15c3c14fee..0000000000
--- a/gnu/services/vnc.scm
+++ /dev/null
@@ -1,247 +0,0 @@
-;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2022 Maxim Cournoyer <maxim.cournoyer@gmail.com>
-;;;
-;;; This file is part of GNU Guix.
-;;;
-;;; GNU Guix is free software; you can redistribute it and/or modify it
-;;; under the terms of the GNU General Public License as published by
-;;; the Free Software Foundation; either version 3 of the License, or (at
-;;; your option) any later version.
-;;;
-;;; GNU Guix is distributed in the hope that it will be useful, but
-;;; WITHOUT ANY WARRANTY; without even the implied warranty of
-;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-;;; GNU General Public License for more details.
-;;;
-;;; You should have received a copy of the GNU General Public License
-;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
-
-(define-module (gnu services vnc)
-  #:use-module (gnu packages vnc)
-  #:use-module ((gnu services) #:hide (delete))
-  #:use-module (gnu system shadow)
-  #:use-module (gnu services configuration)
-  #:use-module (gnu services shepherd)
-  #:use-module (guix gexp)
-  #:use-module (guix records)
-
-  #:export (xvnc-configuration
-            xvnc-configuration-xvnc
-            xvnc-configuration-display-number
-            xvnc-configuration-geometry
-            xvnc-configuration-depth
-            xvnc-configuration-port
-            xvnc-configuration-ipv4?
-            xvnc-configuration-ipv6?
-            xvnc-configuration-password-file
-            xvnc-configuration-xdmcp?
-            xvnc-configuration-inetd?
-            xvnc-configuration-frame-rate
-            xvnc-configuration-security-types
-            xvnc-configuration-localhost?
-            xvnc-configuration-log-level
-            xvnc-configuration-extra-options
-
-            xvnc-service-type))
-
-;;;
-;;; Xvnc.
-;;;
-
-(define (color-depth? x)
-  (member x '(16 24 32)))
-
-(define (port? x)
-  (and (number? x)
-       (and (>= x 0) (<= x 65535))))
-
-(define-maybe/no-serialization port)
-
-(define-maybe/no-serialization string)
-
-(define %security-types '("None" "VncAuth" "Plain" "TLSNone" "TLSVnc" "TLSPlain"
-                          "X509None" "X509Vnc"))
-
-(define (security-type? x)
-  (member x %security-types))
-
-(define (security-types? x)
-  (and (list? x)
-       (and-map security-type? x)))
-
-(define (log-level? x)
-  (and (number? x)
-       (and (>= x 0) (<= x 100))))
-
-(define (strings? x)
-  (and (list? x)
-       (and-map string? x)))
-
-(define-configuration/no-serialization xvnc-configuration
-  (xvnc
-   (file-like tigervnc-server)
-   "The package that provides the Xvnc binary.")
-  (display-number
-   (number 0)
-   "The display number used by Xvnc.  You should set this to a number not
-already used by a Xorg server.  When remoting a complete desktop session via
-XDMCP and using a compatible VNC viewer as provided by the
-@code{tigervnc-client} or @code{turbovnc} packages, the geometry is
-automatically adjusted.")
-  (geometry
-   (string "1024x768")
-   "The size of the desktop to be created.")
-  (depth
-   (color-depth 24)
-   "The pixel depth in bits of the desktop to be created.  Accepted values are
-16, 24 or 32.")
-  (port
-   maybe-port
-   "The port on which to listen for connections from viewers.  When left
-unspecified, it defaults to 5900 plus the display number.")
-  (ipv4?
-   (boolean #t)
-   "Use IPv4 for incoming and outgoing connections.")
-  (ipv6?
-   (boolean #t)
-   "Use IPv6 for incoming and outgoing connections.")
-  (password-file
-   maybe-string
-   "The password file to use, if any.  Refer to vncpasswd(1) to learn how to
-generate such a file.")
-  (xdmcp?
-   (boolean #f)
-   "Query the XDMCP server for a session.  This enables users to log in a
-desktop session from the login manager screen.  For a multiple users scenario,
-you'll want to enable the @code{inetd?} option as well, so that each
-connection to the VNC server is handled separately rather than shared.")
-  (inetd?
-   (boolean #f)
-   "Use an Inetd-style service, which runs the Xvnc server on demand.")
-  (frame-rate
-   (number 60)
-   "The maximum number of updates per second sent to each client.")
-  (security-types
-   (security-types (list "None"))
-   (format #f "The allowed security schemes to use for incoming connections.
-The default is \"None\", which is safe given that Xvnc is configured to
-authenticate the user via the display manager, and only for local connections.
-Accepted values are any of the following: ~s" %security-types))
-  (localhost?
-   (boolean #t)
-   "Only allow connections from the same machine.  It is set to @code{#true}
-by default for security, which means SSH or another secure means should be
-used to expose the remote port.")
-  (log-level
-   (log-level 30)
-   "The log level, a number between 0 and 100, 100 meaning most verbose
-output.  The log messages are output to syslog.")
-  (extra-options
-   (strings '())
-   "This can be used to provide extra Xvnc options not exposed via this
-<xvnc-configuration> record."))
-
-(define (xvnc-configuration->command-line-arguments config)
-  "Derive the command line arguments to used to launch the Xvnc daemon from
-CONFIG, a <xvnc-configuration> object."
-  (match-record config <xvnc-configuration>
-    (xvnc display-number geometry depth port ipv4? ipv6? password-file xdmcp?
-          inetd? frame-rate security-types localhost? log-level extra-options)
-    #~(list #$(file-append xvnc "/bin/Xvnc")
-            #$(format #f ":~a" display-number)
-            "-geometry" #$geometry
-            "-depth" #$(number->string depth)
-            #$@(if inetd?
-                   (list "-inetd")
-                   '())
-            #$@(if (not inetd?)
-                   (if (maybe-value-set? port)
-                       (list "-rfbport" (number->string port))
-                       '())
-                   '())
-            #$@(if (not inetd?)
-                   (if ipv4?
-                       (list "-UseIPv4")
-                       '())
-                   '())
-            #$@(if (not inetd?)
-                   (if ipv6?
-                       (list "-UseIPv6")
-                       '())
-                   '())
-            #$@(if (maybe-value-set? password-file)
-                   (list "-PasswordFile" password-file)
-                   '())
-            "-FrameRate" #$(number->string frame-rate)
-            "-SecurityTypes" #$(string-join security-types ",")
-            #$@(if localhost?
-                   (list "-localhost")
-                   '())
-            "-Log" #$(format #f "*:syslog:~a" log-level)
-            #$@(if xdmcp?
-                   (list "-query" "localhost" "-once")
-                   '())
-            #$@extra-options)))
-
-(define %xvnc-accounts
-  (list (user-group
-         (name "xvnc")
-         (system? #t))
-        (user-account
-         (name "xvnc")
-         (group "xvnc")
-         (system? #t)
-         (comment "User for Xvnc server"))))
-
-(define (xvnc-shepherd-service config)
-  "Return a <shepherd-service> for Xvnc with CONFIG."
-  (let* ((display-number (xvnc-configuration-display-number config))
-         (port (if (maybe-value-set? (xvnc-configuration-port config))
-                   (xvnc-configuration-port config)
-                   #f))
-         (port* (or port (+ 5900 display-number))))
-    (shepherd-service
-     (provision '(xvnc vncserver))
-     (documentation "Run the Xvnc server.")
-     (requirement '(networking syslogd))
-     (start (if (xvnc-configuration-inetd? config)
-                #~(let* ((inaddr (if #$(xvnc-configuration-localhost? config)
-                                     INADDR_LOOPBACK
-                                     INADDR_ANY))
-                         (in6addr (if #$(xvnc-configuration-localhost? config)
-                                      IN6ADDR_LOOPBACK
-                                      IN6ADDR_ANY))
-                         (ipv4-socket (and #$(xvnc-configuration-ipv4? config)
-                                           (make-socket-address AF_INET inaddr
-                                                                #$port*)))
-                         (ipv6-socket (and #$(xvnc-configuration-ipv6? config)
-                                           (make-socket-address AF_INET6 in6addr
-                                                                #$port*))))
-                    (make-inetd-constructor
-                     #$(xvnc-configuration->command-line-arguments config)
-                     `(,@(if ipv4-socket
-                             (list (endpoint ipv4-socket))
-                             '())
-                       ,@(if ipv6-socket
-                             (list (endpoint ipv6-socket))
-                             '()))
-                     #:user "xvnc"
-                     #:group "xvnc"))
-                #~(make-forkexec-constructor
-                   #$(xvnc-configuration->command-line-arguments config)
-                   #:user "xvnc"
-                   #:group "xvnc")))
-     (stop #~(make-inetd-destructor)))))
-
-(define xvnc-service-type
-  (service-type
-   (name 'xvnc)
-   (default-value (xvnc-configuration))
-   (description "Run the Xvnc server, which creates a virtual X11 session and
-allow remote clients connecting to it via the remote framebuffer (RFB)
-protocol.")
-   (extensions (list (service-extension
-                      shepherd-root-service-type
-                      (compose list xvnc-shepherd-service))
-                     (service-extension account-service-type
-                                        (const %xvnc-accounts))))))
diff --git a/gnu/tests/vnc.scm b/gnu/tests/vnc.scm
deleted file mode 100644
index 34c2db1203..0000000000
--- a/gnu/tests/vnc.scm
+++ /dev/null
@@ -1,200 +0,0 @@
-;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2022 Maxim Cournoyer <maxim.cournoyer@gmail.com>.
-;;;
-;;; This file is part of GNU Guix.
-;;;
-;;; GNU Guix is free software; you can redistribute it and/or modify it
-;;; under the terms of the GNU General Public License as published by
-;;; the Free Software Foundation; either version 3 of the License, or (at
-;;; your option) any later version.
-;;;
-;;; GNU Guix is distributed in the hope that it will be useful, but
-;;; WITHOUT ANY WARRANTY; without even the implied warranty of
-;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-;;; GNU General Public License for more details.
-;;;
-;;; You should have received a copy of the GNU General Public License
-;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
-
-(define-module (gnu tests vnc)
-  #:use-module (gnu bootloader)
-  #:use-module (gnu bootloader grub)
-  #:use-module (gnu packages)
-  #:use-module (gnu packages ocr)
-  #:use-module (gnu packages glib)
-  #:use-module (gnu services)
-  #:use-module (gnu services dbus)
-  #:use-module (gnu services desktop)
-  #:use-module (gnu services networking)
-  #:use-module (gnu services ssh)
-  #:use-module (gnu services vnc)
-  #:use-module (gnu services xorg)
-  #:use-module (gnu system)
-  #:use-module (gnu system file-systems)
-  #:use-module (gnu system shadow)
-  #:use-module (gnu system vm)
-  #:use-module (gnu tests)
-  #:use-module (guix gexp)
-  #:use-module (guix modules)
-  #:export (%test-xvnc))
-
-(define %xvnc-os
-  (operating-system
-    ;; Usual boilerplate.
-    (host-name "komputilo")
-    (timezone "Europe/Berlin")
-    (locale "en_US.UTF-8")
-    (bootloader (bootloader-configuration
-                 (bootloader grub-bootloader)
-                 (targets '("/dev/sdX"))))
-    (file-systems (cons (file-system
-                          (device (file-system-label "my-root"))
-                          (mount-point "/")
-                          (type "ext4"))
-                        %base-file-systems))
-
-    (users (cons (user-account
-                  (name "dummy")
-                  (group "users")
-                  (supplementary-groups '("wheel" "netdev"
-                                          "audio" "video")))
-                 %base-user-accounts))
-    (packages (append (map specification->package
-                           '("dbus"     ;for dbus-run-session
-                             "dconf"
-                             "gnome-settings-daemon" ;for schemas
-                             "ratpoison"
-                             "tigervnc-client"
-                             "xterm"))
-                      %base-packages
-                      (list `(,glib "bin")
-                            glib)))
-    (services (cons*
-               (service openssh-service-type (openssh-configuration
-                                              (permit-root-login #t)
-                                              (allow-empty-passwords? #t)))
-               (service xvnc-service-type (xvnc-configuration
-                                           (display-number 5)
-                                           (security-types (list "None"))
-                                           (log-level 100)
-                                           (localhost? #f)
-                                           (xdmcp? #t)
-                                           (inetd? #t)))
-               (modify-services %desktop-services
-                 (gdm-service-type config => (gdm-configuration
-                                              (inherit config)
-                                              (auto-login? #t)
-                                              (auto-suspend? #f)
-                                              (default-user "root")
-                                              (debug? #t)
-                                              (xdmcp? #t))))))))
-
-(define (run-xvnc-test)
-  "Run tests in %XVNC-OS."
-
-  (define os (marionette-operating-system
-              %xvnc-os
-              #:imported-modules (source-module-closure
-                                  '((gnu services herd)))))
-
-  (define vm (virtual-machine
-              (operating-system os)
-              (memory-size 1024)))
-
-  (define test
-    (with-imported-modules (source-module-closure
-                            '((gnu build marionette)
-                              (guix build utils)))
-      #~(begin
-          (use-modules (gnu build marionette)
-                       (guix build utils)
-                       (srfi srfi-26)
-                       (srfi srfi-64))
-
-          (let ((marionette (make-marionette (list #$vm))))
-
-            (test-runner-current (system-test-runner #$output))
-            (test-begin "xvnc")
-
-            (test-assert "service running"
-              (marionette-eval
-               '(begin
-                  (use-modules (gnu services herd))
-                  (start-service 'xvnc))
-               marionette))
-
-            (test-assert "wait for port 5905, IPv4"
-              (wait-for-tcp-port 5905 marionette))
-
-            (test-assert "wait for port 5905, IPv6"
-              (wait-for-tcp-port 5905 marionette
-                                 #:address
-                                 '(make-socket-address
-                                   AF_INET6 (inet-pton AF_INET6 "::1") 5905)))
-
-            (test-assert "gdm auto-suspend is disabled"
-              ;; More a GDM than a Xvnc test, but since it's a cross-cutting
-              ;; concern and we have everything set up here, we might as well
-              ;; check it here.
-              (marionette-eval
-               '(begin
-                  ;; Check that DCONF_PROFILE is set...
-                  (invoke "/bin/sh" "-lc" "\
-pgrep gdm | head -n1 | xargs -I{} grep -Fq DCONF_PROFILE /proc/{}/environ")
-
-                  ;; ... and that
-                  (invoke "/bin/sh" "-lc" "\
-sudo -E -u gdm env DCONF_PROFILE=/etc/dconf/profile/gdm dbus-run-session \
-gsettings get org.gnome.settings-daemon.plugins.power sleep-inactive-ac-type \
-| grep -Fq nothing"))
-               marionette))
-
-            (test-assert "vnc lands on the gdm login screen"
-              ;; This test runs vncviewer on the local VM and verifies that it
-              ;; manages to access the GDM login screen (via XDMCP).
-              (begin
-                (define (ratpoison-abort)
-                  (marionette-control "sendkey ctrl-g" marionette))
-
-                (define (ratpoison-help)
-                  (marionette-control "sendkey ctrl-t" marionette)
-                  (marionette-type "?" marionette)
-                  (sleep 1))            ;wait for help screen to appear
-
-                (define (ratpoison-exec command)
-                  (marionette-control "sendkey ctrl-t" marionette)
-                  (marionette-type "!" marionette)
-                  (marionette-type (string-append command "\n") marionette))
-
-                ;; Wait until the ratpoison help screen can be displayed; this
-                ;; means the window manager is ready.
-                (wait-for-screen-text marionette
-                                      (cut string-contains <> "key bindings")
-                                      #:ocr #$(file-append tesseract-ocr
-                                                           "/bin/tesseract")
-                                      #:pre-action ratpoison-help
-                                      #:post-action ratpoison-abort)
-
-                ;; Run vncviewer and expect the GDM login screen (accessed via
-                ;; XDMCP).  This can take a while to appear on slower machines.
-                (ratpoison-exec "vncviewer localhost:5905")
-                ;; XXX: tesseract narrowly recognizes "Guix" as "uix" from the
-                ;; background image; ocrad fares worst.  Sadly, 'Username' is
-                ;; not recognized at all.
-                (wait-for-screen-text marionette
-                                      (cut string-contains <> "uix")
-                                      #:ocr #$(file-append tesseract-ocr
-                                                           "/bin/tesseract")
-                                      #:timeout 120)))
-
-            (test-end)))))
-
-  (gexp->derivation "xvnc-test" test))
-
-(define %test-xvnc
-  (system-test
-   (name "xvnc")
-   (description "Basic tests for the Xvnc service.  One of the tests validate
-that XDMCP works with GDM, and is therefore heavy in terms of disk and memory
-requirements.")
-   (value (run-xvnc-test))))