system: Make service procedures non-monadic.

[jackhill/guix/guix.git] / gnu / services / lirc.scm

;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2015 Alex Kost <alezost@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.
;;;
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;;; 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 lirc)
  #:use-module (gnu services)
  #:use-module (gnu packages lirc)
  #:use-module (guix store)
  #:use-module (guix gexp)
  #:export (lirc-service))

;;; Commentary:
;;;
;;; LIRC services.
;;;
;;; Code:

(define* (lirc-service #:key (lirc lirc)
                       device driver config-file
                       (extra-options '()))
  "Return a service that runs @url{http://www.lirc.org,LIRC}, a daemon that
decodes infrared signals from remote controls.

The daemon will use specified @var{device}, @var{driver} and
@var{config-file} (configuration file name).

Finally, @var{extra-options} is a list of additional command-line options
passed to @command{lircd}."
  (service
   (provision '(lircd))
   (documentation "Run the LIRC daemon.")
   (requirement '(user-processes))
   (start #~(make-forkexec-constructor
             (list (string-append #$lirc "/sbin/lircd")
                   "--nodaemon"
                   #$@(if device
                          #~("--device" #$device)
                          #~())
                   #$@(if driver
                          #~("--driver" #$driver)
                          #~())
                   #$@(if config-file
                          #~(#$config-file)
                          #~())
                   #$@extra-options)))
   (stop #~(make-kill-destructor))
   (activate #~(begin
                 (use-modules (guix build utils))
                 (mkdir-p "/var/run/lirc")))))

;;; lirc.scm ends here