102 lines
4.1 KiB
Scheme
102 lines
4.1 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2019, 2020 Ludovic Courtès <ludo@gnu.org>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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;;; GNU Guix is free software; you can redistribute it and/or modify it
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;;; under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation; either version 3 of the License, or (at
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;;; your option) any later version.
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;;;
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;;; GNU Guix is distributed in the hope that it will be useful, but
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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(define-module (gnu system keyboard)
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#:use-module (guix gexp)
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#:use-module ((gnu packages xorg)
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#:select (xkeyboard-config console-setup))
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#:use-module (srfi srfi-9 gnu)
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#:use-module (ice-9 match)
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#:export (keyboard-layout?
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keyboard-layout
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keyboard-layout-name
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keyboard-layout-variant
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keyboard-layout-model
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keyboard-layout-options
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keyboard-layout->console-keymap))
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;;; Commentary:
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;;;
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;;; This module provides a data structure to represent keyboard layouts
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;;; according to the XKB naming and classification (see the 'xkeyboard-config'
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;;; package).
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;;;
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;;; Code:
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(define-immutable-record-type <keyboard-layout>
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(%keyboard-layout name variant model options)
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keyboard-layout?
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(name keyboard-layout-name) ;string
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(variant keyboard-layout-variant) ;#f | string
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(model keyboard-layout-model) ;#f | string
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(options keyboard-layout-options)) ;list of strings
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(define* (keyboard-layout name #:optional variant
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#:key model (options '()))
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"Return a new keyboard layout with the given NAME and VARIANT.
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NAME must be a string such as \"fr\"; VARIANT must be a string such as
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\"bepo\" or \"nodeadkeys\". See the 'xkeyboard-config' package for valid
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options."
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(%keyboard-layout name variant model options))
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(define* (keyboard-layout->console-keymap layout
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#:key
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(xkeyboard-config xkeyboard-config))
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"Return a Linux console keymap file for LAYOUT, a <keyboard-layout> record.
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Layout information is taken from the XKEYBOARD-CONFIG package."
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(define build
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(with-imported-modules '((guix build utils))
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#~(begin
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(use-modules (guix build utils)
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(ice-9 popen)
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(ice-9 match))
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(define pipe
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(open-pipe* OPEN_READ
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#+(file-append console-setup "/bin/ckbcomp")
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(string-append "-I"
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#+(file-append xkeyboard-config
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"/share/X11/xkb"))
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"-rules" "base"
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#$@(match (keyboard-layout-model layout)
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(#f '())
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(model `("-model" ,model)))
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#$(keyboard-layout-name layout)
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#$(or (keyboard-layout-variant layout)
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"")
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#$(string-join (keyboard-layout-options layout) ",")))
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(call-with-output-file #$output
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(lambda (output)
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(dump-port pipe output)))
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;; Note: ckbcomp errors out when the layout name is unknown, but
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;; merely emits a warning when the variant is unknown.
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(unless (zero? (close-pipe pipe))
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(error "failed to create console keymap for keyboard layout"
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#$(keyboard-layout-name layout))))))
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(computed-file (string-append "console-keymap."
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(string-map (match-lambda
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(#\, #\-)
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(chr chr))
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(keyboard-layout-name layout)))
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build))
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