diff options
Diffstat (limited to 'gnu/system')
| -rw-r--r-- | gnu/system/keyboard.scm | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/gnu/system/keyboard.scm b/gnu/system/keyboard.scm new file mode 100644 index 0000000000..cd3ab37b27 --- /dev/null +++ b/gnu/system/keyboard.scm @@ -0,0 +1,98 @@ +;;; GNU Guix --- Functional package management for GNU +;;; Copyright © 2019 Ludovic Courtès <ludo@gnu.org> +;;; +;;; 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 system keyboard) + #:use-module (guix gexp) + #:use-module ((gnu packages xorg) + #:select (xkeyboard-config console-setup)) + #:use-module (srfi srfi-9 gnu) + #:use-module (ice-9 match) + #:export (keyboard-layout? + keyboard-layout + keyboard-layout-name + keyboard-layout-variant + keyboard-layout-model + keyboard-layout-options + + keyboard-layout->console-keymap)) + +;;; Commentary: +;;; +;;; This module provides a data structure to represent keyboard layouts +;;; according to the XKB naming and classification (see the 'xkeyboard-config' +;;; package). +;;; +;;; Code: + +(define-immutable-record-type <keyboard-layout> + (%keyboard-layout name variant model options) + keyboard-layout? + (name keyboard-layout-name) ;string + (variant keyboard-layout-variant) ;#f | string + (model keyboard-layout-model) ;#f | string + (options keyboard-layout-options)) ;list of strings + +(define* (keyboard-layout name #:optional variant + #:key model (options '())) + "Return a new keyboard layout with the given NAME and VARIANT. + +NAME must be a string such as \"fr\"; VARIANT must be a string such as +\"bepo\" or \"nodeadkeys\". See the 'xkeyboard-config' package for valid +options." + (%keyboard-layout name variant model options)) + +(define* (keyboard-layout->console-keymap layout + #:key + (xkeyboard-config xkeyboard-config)) + "Return a Linux console keymap file for LAYOUT, a <keyboard-layout> record. +Layout information is taken from the XKEYBOARD-CONFIG package." + (define build + (with-imported-modules '((guix build utils)) + #~(begin + (use-modules (guix build utils) + (ice-9 popen) + (ice-9 match)) + + (define pipe + (open-pipe* OPEN_READ + #+(file-append console-setup "/bin/ckbcomp") + (string-append "-I" + #+(file-append xkeyboard-config + "/share/X11/xkb")) + "-rules" "base" + #$@(match (keyboard-layout-model layout) + (#f '()) + (model `("-model" ,model))) + #$(keyboard-layout-name layout) + #$(or (keyboard-layout-variant layout) + "") + #$(string-join (keyboard-layout-options layout) ","))) + + (call-with-output-file #$output + (lambda (output) + (dump-port pipe output))) + + ;; Note: ckbcomp errors out when the layout name is unknown, but + ;; merely emits a warning when the variant is unknown. + (unless (zero? (close-pipe pipe)) + (error "failed to create console keymap for keyboard layout" + #$(keyboard-layout-name layout)))))) + + (computed-file (string-append "console-keymap." + (keyboard-layout-name layout)) + build)) |