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def7248 May 11, 2018
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;;; Copyright (C) 2016 Nikolai Merinov <nikolai.merinov@member.fsf.org>
;;;
;;; This file is part of mnd repository for GNU Guix.
;;;
;;; This script 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.
;;;
;;; This script 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 mnd repository. If not, see <http://www.gnu.org/licenses/>.
(define-module (mnd services irssi)
#:use-module (gnu services)
#:use-module (gnu services shepherd)
#:use-module (gnu packages irc) ; irssi
#:use-module (gnu packages screen)
#:use-module (guix gexp)
#:use-module (guix records)
#:use-module (ice-9 match)
#:export (irssi-service))
;;; Commentary:
;;;
;;; RSS service.
;;;
;;; Code:
(define-record-type* <irssi-configuration>
irssi-configuration make-irssi-configuration
irssi-configuation?
(irssi irssi-configuration-irssi ;<package>
(default irssi))
(screen irssi-configuration-screen ;<package>
(default screen))
(user irssi-configuration-user) ;string
(group irssi-configuration-group ;string
(default "users"))
(extra-options irssi-configuration-extra-options ;list of strings
(default '())))
;;; WARNING: Are we can use any of next ways to select user:
;;; 1. Use #$sudo utility from (gnu packages admin)
;;; 2. Take /var/setuid-wrappers/sudo as in https://nixos.org/wiki/NixOS:extend_NixOS
;;; 3. Specify user, group, directory and environment to make-forkexec-constructor
(define irssi-shepherd-service
(match-lambda
(($ <irssi-configuration> irssi screen user group options)
(let ((user-home (passwd:dir (getpw user))))
(list (shepherd-service
(provision '(irssi))
(documentation "Run the irssi client in screen.")
(requirement '(user-processes))
(start #~(begin
(use-modules (srfi srfi-1) ; (remove pred list)
(srfi srfi-26)) ; (cut function arg1 <> arg3)
(make-forkexec-constructor
(list
(string-append #$screen "/bin/screen")
"-D" "-m" "-S" "irc"
(string-append #$irssi "/bin/irssi")
#$@options)
#:user #$user #:group #$group
#:directory #$user-home
#:environment-variables
(cons (string-append "HOME=" #$user-home)
(remove #;(cut string-prefix? "HOME=" <>) ; Why this code fail with "ERROR: Unbound variable: <>"?
(lambda (x) (string-prefix? "HOME=" x)) (environ))))))
(stop #~(make-kill-destructor))))))))
(define irssi-service-type
(service-type (name 'irssi)
(extensions
(list (service-extension shepherd-root-service-type
irssi-shepherd-service)))))
(define* (irssi-service #:key (irssi irssi)
(screen screen)
user
(group "users")
(extra-options '()))
"Return a service that runs irssi IRC client under screen from specified @var{user}.
Finally, @var{extra-options} is a list of additional command-line options
passed to @command{irssi}."
(service irssi-service-type
(irssi-configuration
(irssi irssi) (screen screen)
(user user) (group group)
(extra-options extra-options))))
;;; irssi.scm ends here