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Import seatd-service-type from Guix.

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* rosenthal/services/desktop.scm: New file.
(seatd-configuration,seatd-service-type): New variables.
<https://git.savannah.gnu.org/cgit/guix.git/tree/gnu/services/desktop.scm>

Removed hard requirements for control group file systems.
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Hilton Chain 2022-11-25 23:22:29 +08:00
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;; SPDX-FileCopyrightText: 2014-2022 Ludovic Courtès <ludo@gnu.org>
;; SPDX-FileCopyrightText: 2015 Andy Wingo <wingo@igalia.com>
;; SPDX-FileCopyrightText: 2015 Mark H Weaver <mhw@netris.org>
;; SPDX-FileCopyrightText: 2016 Sou Bunnbu <iyzsong@gmail.com>
;; SPDX-FileCopyrightText: 2017, 2020, 2022 Maxim Cournoyer <maxim.cournoyer@gmail.com>
;; SPDX-FileCopyrightText: 2017 Nikita <nikita@n0.is>
;; SPDX-FileCopyrightText: 2018, 2020 Efraim Flashner <efraim@flashner.co.il>
;; SPDX-FileCopyrightText: 2018 Ricardo Wurmus <rekado@elephly.net>
;; SPDX-FileCopyrightText: 2017, 2019 Christopher Baines <mail@cbaines.net>
;; SPDX-FileCopyrightText: 2019 Tim Gesthuizen <tim.gesthuizen@yahoo.de>
;; SPDX-FileCopyrightText: 2019 David Wilson <david@daviwil.com>
;; SPDX-FileCopyrightText: 2020 Tobias Geerinckx-Rice <me@tobias.gr>
;; SPDX-FileCopyrightText: 2020 Reza Alizadeh Majd <r.majd@pantherx.org>
;; SPDX-FileCopyrightText: 2021 Brice Waegeneire <brice@waegenei.re>
;; SPDX-FileCopyrightText: 2021, 2022 muradm <mail@muradm.net>
;;
;; SPDX-License-Identifier: GPL-3.0-or-later
(define-module (rosenthal services desktop)
#:use-module (gnu packages admin)
#:use-module (gnu services)
#:use-module (gnu services shepherd)
#:use-module (gnu system pam)
#:use-module (gnu system shadow)
#:use-module (guix gexp)
#:use-module (guix records)
#:use-module (ice-9 match)
#:export (seatd-configuration
seatd-service-type))
;;;
;;; seatd-service-type -- minimal seat management daemon
;;;
(define (seatd-group-sanitizer group-or-name)
(match group-or-name
((? user-group? group) group)
((? string? group-name) (user-group (name group-name) (system? #t)))
(_ (leave (G_ "seatd: '~a' is not a valid group~%") group-or-name))))
(define-record-type* <seatd-configuration> seatd-configuration
make-seatd-configuration
seatd-configuration?
(seatd seatd-package (default seatd))
(group seatd-group ; string | <user-group>
(default "seat")
(sanitize seatd-group-sanitizer))
(socket seatd-socket (default "/run/seatd.sock"))
(logfile seatd-logfile (default "/var/log/seatd.log"))
(loglevel seatd-loglevel (default "info")))
(define (seatd-shepherd-service config)
(list (shepherd-service
(documentation "Minimal seat management daemon")
(requirement '())
(provision '(seatd))
(start #~(make-forkexec-constructor
(list #$(file-append (seatd-package config) "/bin/seatd")
"-g" #$(user-group-name (seatd-group config)))
#:environment-variables
(list (string-append "SEATD_LOGLEVEL="
#$(seatd-loglevel config))
(string-append "SEATD_DEFAULTPATH="
#$(seatd-socket config)))
#:log-file #$(seatd-logfile config)))
(stop #~(make-kill-destructor)))))
(define seatd-accounts
(match-lambda (($ <seatd-configuration> _ group) (list group))))
(define seatd-environment
(match-lambda
(($ <seatd-configuration> _ _ socket)
`(("SEATD_SOCK" . ,socket)))))
(define seatd-service-type
(service-type
(name 'seatd)
(description "Seat management takes care of mediating access
to shared devices (graphics, input), without requiring the
applications needing access to be root.")
(extensions
(list
(service-extension account-service-type seatd-accounts)
(service-extension session-environment-service-type seatd-environment)
(service-extension shepherd-root-service-type seatd-shepherd-service)))
(default-value (seatd-configuration))))