installer: Turn help menu into parameters menu.

* gnu/local.mk (INSTALLER_MODULES): Rename help.scm into parameters.scm.
* po/guix/POTFILES.in: Ditto.
* gnu/installer/record.scm (<installer>): Rename help-menu into parameter-menu
and help-page into parameters-page.
* gnu/installer/newt/parameters.scm: Renamed from help.scm. Update information
messages.
* gnu/installer/newt.scm: Update accordingly.
* gnu/installer/newt/keymap.scm: Ditto.

1 files changed, 45 insertions, 0 deletions

diff --git a/gnu/installer/newt/parameters.scm b/gnu/installer/newt/parameters.scm
new file mode 100644
index 0000000000..4a34e94155
--- /dev/null
+++ b/gnu/installer/newt/parameters.scm
@@ -0,0 +1,45 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2020 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 parameters)
+  #:use-module (gnu installer steps)
+  #:use-module (gnu installer newt page)
+  #:use-module (guix i18n)
+  #:use-module (ice-9 match)
+  #:use-module (newt)
+  #:export (run-parameters-page))
+
+(define (run-parameters-page keyboard-layout-selection)
+  "Run a parameters page allowing to change the keyboard layout"
+  (let* ((items
+          (list
+           (cons (G_ "Change keyboard layout") keyboard-layout-selection)))
+         (result
+          (run-listbox-selection-page
+           #:info-text (G_ "Please choose one of the following parameters or \
+press ‘Back’ to go back to the installation process.")
+           #:title (G_ "Installation parameters")
+           #:listbox-items items
+           #:listbox-item->text car
+           #:sort-listbox-items? #f
+           #:listbox-height 6
+           #:button-text (G_ "Back"))))
+    (match result
+      ((_ . proc)
+       (proc))
+      (_ #f))))