gnu: Add graphical installer support.

* configure.ac: Require that guile-newt is available.
* gnu/installer.scm: New file.
* gnu/installer/aux-files/logo.txt: New file.
* gnu/installer/build-installer.scm: New file.
* gnu/installer/connman.scm: New file.
* gnu/installer/keymap.scm: New file.
* gnu/installer/locale.scm: New file.
* gnu/installer/newt.scm: New file.
* gnu/installer/newt/ethernet.scm: New file.
* gnu/installer/newt/hostname.scm: New file.
* gnu/installer/newt/keymap.scm: New file.
* gnu/installer/newt/locale.scm: New file.
* gnu/installer/newt/menu.scm: New file.
* gnu/installer/newt/network.scm: New file.
* gnu/installer/newt/page.scm: New file.
* gnu/installer/newt/timezone.scm: New file.
* gnu/installer/newt/user.scm: New file.
* gnu/installer/newt/utils.scm: New file.
* gnu/installer/newt/welcome.scm: New file.
* gnu/installer/newt/wifi.scm: New file.
* gnu/installer/steps.scm: New file.
* gnu/installer/timezone.scm: New file.
* gnu/installer/utils.scm: New file.
* gnu/local.mk (GNU_SYSTEM_MODULES): Add previous files.
* gnu/system.scm: Export %root-account.
* gnu/system/install.scm (%installation-services): Use kmscon instead of linux
VT for all tty.
(installation-os)[users]: Add the graphical installer as shell of the root
account.
[packages]: Add font related packages.
* po/guix/POTFILES.in: Add installer files.

1 files changed, 159 insertions, 0 deletions

diff --git a/gnu/installer/newt/network.scm b/gnu/installer/newt/network.scm
new file mode 100644
index 0000000000..c6ba69d4e8
--- /dev/null
+++ b/gnu/installer/newt/network.scm
@@ -0,0 +1,159 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2018 Mathieu Othacehe <m.othacehe@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 installer newt network)
+  #:use-module (gnu installer connman)
+  #:use-module (gnu installer steps)
+  #:use-module (gnu installer utils)
+  #:use-module (gnu installer newt ethernet)
+  #:use-module (gnu installer newt page)
+  #:use-module (gnu installer newt wifi)
+  #:use-module (guix i18n)
+  #:use-module (srfi srfi-1)
+  #:use-module (srfi srfi-11)
+  #:use-module (srfi srfi-34)
+  #:use-module (srfi srfi-35)
+  #:use-module (newt)
+  #:export (run-network-page))
+
+;; Maximum length of a technology name.
+(define technology-name-max-length (make-parameter 20))
+
+(define (technology->text technology)
+  "Return a string describing the given TECHNOLOGY."
+  (let* ((name (technology-name technology))
+         (padded-name (string-pad-right name
+                                        (technology-name-max-length))))
+    (format #f "~a~%" padded-name)))
+
+(define (run-technology-page)
+  "Run a page to ask the user which technology shall be used to access
+Internet and return the selected technology. For now, only technologies with
+\"ethernet\" or \"wifi\" types are supported."
+  (define (technology-items)
+    (filter (lambda (technology)
+              (let ((type (technology-type technology)))
+                (or
+                 (string=? type "ethernet")
+                 (string=? type "wifi"))))
+            (connman-technologies)))
+
+  (run-listbox-selection-page
+   #:info-text (G_ "The install process requires an internet access.\
+ Please select a network technology.")
+   #:title (G_ "Technology selection")
+   #:listbox-items (technology-items)
+   #:listbox-item->text technology->text
+   #:button-text (G_ "Cancel")
+   #:button-callback-procedure
+   (lambda _
+     (raise
+      (condition
+       (&installer-step-abort))))))
+
+(define (find-technology-by-type technologies type)
+  "Find and return a technology with the given TYPE in TECHNOLOGIES list."
+  (find (lambda (technology)
+          (string=? (technology-type technology)
+                    type))
+        technologies))
+
+(define (wait-technology-powered technology)
+  "Wait and display a progress bar until the given TECHNOLOGY is powered."
+  (let ((name (technology-name technology))
+        (full-value 5))
+    (run-scale-page
+     #:title (G_ "Powering technology")
+     #:info-text (format #f "Waiting for technology ~a to be powered." name)
+     #:scale-full-value full-value
+     #:scale-update-proc
+     (lambda (value)
+       (let* ((technologies (connman-technologies))
+              (type (technology-type technology))
+              (updated-technology
+               (find-technology-by-type technologies type))
+              (technology-powered? updated-technology))
+         (sleep 1)
+         (if technology-powered?
+             full-value
+             (+ value 1)))))))
+
+(define (wait-service-online)
+  "Display a newt scale until connman detects an Internet access. Do
+FULL-VALUE tentatives, spaced by 1 second."
+  (let* ((full-value 5))
+    (run-scale-page
+     #:title (G_ "Checking connectivity")
+     #:info-text (G_ "Waiting internet access is established")
+     #:scale-full-value full-value
+     #:scale-update-proc
+     (lambda (value)
+       (sleep 1)
+       (if (connman-online?)
+           full-value
+           (+ value 1))))
+    (unless (connman-online?)
+      (run-error-page
+       (G_ "The selected network does not provide an Internet \
+access, please try again.")
+       (G_ "Connection error"))
+      (raise
+       (condition
+        (&installer-step-abort))))))
+
+(define (run-network-page)
+  "Run a page to allow the user to configure connman so that it can access the
+Internet."
+  (define network-steps
+    (list
+     ;; Ask the user to choose between ethernet and wifi technologies.
+     (installer-step
+      (id 'select-technology)
+      (compute
+       (lambda _
+         (run-technology-page))))
+     ;; Enable the previously selected technology.
+     (installer-step
+      (id 'power-technology)
+      (compute
+       (lambda (result)
+         (let ((technology (result-step result 'select-technology)))
+           (connman-enable-technology technology)
+           (wait-technology-powered technology)))))
+     ;; Propose the user to connect to one of the service available for the
+     ;; previously selected technology.
+     (installer-step
+      (id 'connect-service)
+      (compute
+       (lambda (result)
+         (let* ((technology (result-step result 'select-technology))
+                (type (technology-type technology)))
+           (cond
+            ((string=? "wifi" type)
+             (run-wifi-page))
+            ((string=? "ethernet" type)
+             (run-ethernet-page)))))))
+     ;; Wait for connman status to switch to 'online, which means it can
+     ;; access Internet.
+     (installer-step
+      (id 'wait-online)
+      (compute (lambda _
+                 (wait-service-online))))))
+  (run-installer-steps
+   #:steps network-steps
+   #:rewind-strategy 'start))