661 lines
28 KiB
Scheme
661 lines
28 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2014, 2015 Ludovic Courtès <ludo@gnu.org>
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;;; Copyright © 2015 Andy Wingo <wingo@igalia.com>
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;;; Copyright © 2015 Mark H Weaver <mhw@netris.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 services desktop)
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#:use-module (gnu services)
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#:use-module (gnu services dmd)
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#:use-module (gnu services base)
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#:use-module (gnu services dbus)
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#:use-module (gnu services avahi)
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#:use-module (gnu services xorg)
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#:use-module (gnu services networking)
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#:use-module (gnu system shadow)
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#:use-module (gnu system linux) ; unix-pam-service
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#:use-module (gnu packages glib)
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#:use-module (gnu packages admin)
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#:use-module (gnu packages freedesktop)
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#:use-module (gnu packages gnome)
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#:use-module (gnu packages avahi)
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#:use-module (gnu packages polkit)
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#:use-module (guix records)
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#:use-module (guix packages)
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#:use-module (guix store)
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#:use-module (guix gexp)
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#:use-module (srfi srfi-1)
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#:use-module (ice-9 match)
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#:export (upower-service
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colord-service
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geoclue-application
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%standard-geoclue-applications
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geoclue-service
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polkit-service
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elogind-configuration
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elogind-service
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%desktop-services))
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;;; Commentary:
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;;;
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;;; This module contains service definitions for a "desktop" environment.
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;;;
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;;; Code:
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;;;
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;;; Helpers.
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;;;
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(define (bool value)
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(if value "true\n" "false\n"))
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(define (wrapped-dbus-service service program variable value)
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"Return a wrapper for @var{service}, a package containing a D-Bus service,
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where @var{program} is wrapped such that environment variable @var{variable}
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is set to @var{value} when the bus daemon launches it."
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(define wrapper
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(program-file (string-append (package-name service) "-program-wrapper")
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#~(begin
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(setenv #$variable #$value)
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(apply execl (string-append #$service "/" #$program)
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(string-append #$service "/" #$program)
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(cdr (command-line))))))
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(computed-file (string-append (package-name service) "-wrapper")
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#~(begin
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(use-modules (guix build utils))
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(define service-directory
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"/share/dbus-1/system-services")
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(mkdir-p (dirname (string-append #$output
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service-directory)))
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(copy-recursively (string-append #$service
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service-directory)
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(string-append #$output
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service-directory))
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(symlink (string-append #$service "/etc") ;for etc/dbus-1
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(string-append #$output "/etc"))
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(for-each (lambda (file)
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(substitute* file
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(("Exec[[:blank:]]*=[[:blank:]]*([[:graph:]]+)(.*)$"
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_ original-program arguments)
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(string-append "Exec=" #$wrapper arguments
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"\n"))))
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(find-files #$output "\\.service$")))
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#:modules '((guix build utils))))
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;;;
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;;; Upower D-Bus service.
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;;;
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;; TODO: Export.
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(define-record-type* <upower-configuration>
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upower-configuration make-upower-configuration
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upower-configuration?
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(upower upower-configuration-upower
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(default upower))
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(watts-up-pro? upower-configuration-watts-up-pro?)
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(poll-batteries? upower-configuration-poll-batteries?)
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(ignore-lid? upower-configuration-ignore-lid?)
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(use-percentage-for-policy? upower-configuration-use-percentage-for-policy?)
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(percentage-low upower-configuration-percentage-low)
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(percentage-critical upower-configuration-percentage-critical)
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(percentage-action upower-configuration-percentage-action)
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(time-low upower-configuration-time-low)
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(time-critical upower-configuration-time-critical)
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(time-action upower-configuration-time-action)
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(critical-power-action upower-configuration-critical-power-action))
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(define* upower-configuration-file
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;; Return an upower-daemon configuration file.
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(match-lambda
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(($ <upower-configuration> upower
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watts-up-pro? poll-batteries? ignore-lid? use-percentage-for-policy?
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percentage-low percentage-critical percentage-action time-low
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time-critical time-action critical-power-action)
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(plain-file "UPower.conf"
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(string-append
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"[UPower]\n"
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"EnableWattsUpPro=" (bool watts-up-pro?)
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"NoPollBatteries=" (bool (not poll-batteries?))
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"IgnoreLid=" (bool ignore-lid?)
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"UsePercentageForPolicy=" (bool use-percentage-for-policy?)
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"PercentageLow=" (number->string percentage-low) "\n"
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"PercentageCritical=" (number->string percentage-critical) "\n"
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"PercentageAction=" (number->string percentage-action) "\n"
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"TimeLow=" (number->string time-low) "\n"
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"TimeCritical=" (number->string time-critical) "\n"
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"TimeAction=" (number->string time-action) "\n"
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"CriticalPowerAction=" (match critical-power-action
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('hybrid-sleep "HybridSleep")
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('hibernate "Hibernate")
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('power-off "PowerOff"))
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"\n")))))
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(define %upower-activation
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#~(begin
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(use-modules (guix build utils))
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(mkdir-p "/var/lib/upower")))
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(define (upower-dbus-service config)
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(list (wrapped-dbus-service (upower-configuration-upower config)
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"libexec/upowerd"
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"UPOWER_CONF_FILE_NAME"
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(upower-configuration-file config))))
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(define (upower-dmd-service config)
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"Return a dmd service for UPower with CONFIG."
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(let ((upower (upower-configuration-upower config))
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(config (upower-configuration-file config)))
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(list (dmd-service
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(documentation "Run the UPower power and battery monitor.")
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(provision '(upower-daemon))
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(requirement '(dbus-system udev))
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(start #~(make-forkexec-constructor
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(list (string-append #$upower "/libexec/upowerd"))
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#:environment-variables
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(list (string-append "UPOWER_CONF_FILE_NAME="
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#$config))))
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(stop #~(make-kill-destructor))))))
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(define upower-service-type
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(service-type (name 'upower)
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(extensions
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(list (service-extension dbus-root-service-type
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upower-dbus-service)
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(service-extension dmd-root-service-type
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upower-dmd-service)
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(service-extension activation-service-type
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(const %upower-activation))
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(service-extension udev-service-type
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(compose
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list
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upower-configuration-upower))))))
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(define* (upower-service #:key (upower upower)
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(watts-up-pro? #f)
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(poll-batteries? #t)
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(ignore-lid? #f)
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(use-percentage-for-policy? #f)
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(percentage-low 10)
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(percentage-critical 3)
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(percentage-action 2)
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(time-low 1200)
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(time-critical 300)
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(time-action 120)
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(critical-power-action 'hybrid-sleep))
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"Return a service that runs @uref{http://upower.freedesktop.org/,
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@command{upowerd}}, a system-wide monitor for power consumption and battery
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levels, with the given configuration settings. It implements the
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@code{org.freedesktop.UPower} D-Bus interface, and is notably used by GNOME."
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(let ((config (upower-configuration
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(watts-up-pro? watts-up-pro?)
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(poll-batteries? poll-batteries?)
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(ignore-lid? ignore-lid?)
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(use-percentage-for-policy? use-percentage-for-policy?)
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(percentage-low percentage-low)
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(percentage-critical percentage-critical)
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(percentage-action percentage-action)
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(time-low time-low)
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(time-critical time-critical)
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(time-action time-action)
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(critical-power-action critical-power-action))))
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(service upower-service-type config)))
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;;;
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;;; Colord D-Bus service.
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;;;
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(define %colord-activation
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#~(begin
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(use-modules (guix build utils))
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(mkdir-p "/var/lib/colord")
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(let ((user (getpwnam "colord")))
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(chown "/var/lib/colord"
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(passwd:uid user) (passwd:gid user)))))
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(define %colord-accounts
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(list (user-group (name "colord") (system? #t))
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(user-account
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(name "colord")
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(group "colord")
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(system? #t)
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(comment "colord daemon user")
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(home-directory "/var/empty")
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(shell #~(string-append #$shadow "/sbin/nologin")))))
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(define (colord-dmd-service colord)
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"Return a dmd service for COLORD."
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;; TODO: Remove when D-Bus activation works.
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(list (dmd-service
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(documentation "Run the colord color management service.")
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(provision '(colord-daemon))
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(requirement '(dbus-system udev))
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(start #~(make-forkexec-constructor
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(list (string-append #$colord "/libexec/colord"))))
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(stop #~(make-kill-destructor)))))
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(define colord-service-type
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(service-type (name 'colord)
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(extensions
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(list (service-extension account-service-type
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(const %colord-accounts))
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(service-extension activation-service-type
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(const %colord-activation))
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(service-extension dmd-root-service-type
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colord-dmd-service)
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;; Colord is a D-Bus service that dbus-daemon can
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;; activate.
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(service-extension dbus-root-service-type list)
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;; Colord provides "color device" rules for udev.
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(service-extension udev-service-type list)))))
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(define* (colord-service #:key (colord colord))
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"Return a service that runs @command{colord}, a system service with a D-Bus
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interface to manage the color profiles of input and output devices such as
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screens and scanners. It is notably used by the GNOME Color Manager graphical
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tool. See @uref{http://www.freedesktop.org/software/colord/, the colord web
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site} for more information."
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(service colord-service-type colord))
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;;;
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;;; GeoClue D-Bus service.
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;;;
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;; TODO: Export.
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(define-record-type* <geoclue-configuration>
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geoclue-configuration make-geoclue-configuration
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geoclue-configuration?
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(geoclue geoclue-configuration-geoclue
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(default geoclue))
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(whitelist geoclue-configuration-whitelist)
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(wifi-geolocation-url geoclue-configuration-wifi-geolocation-url)
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(submit-data? geoclue-configuration-submit-data?)
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(wifi-submission-url geoclue-configuration-wifi-submission-url)
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(submission-nick geoclue-configuration-submission-nick)
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(applications geoclue-configuration-applications))
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(define* (geoclue-application name #:key (allowed? #t) system? (users '()))
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"Configure default GeoClue access permissions for an application. NAME is
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the Desktop ID of the application, without the .desktop part. If ALLOWED? is
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true, the application will have access to location information by default.
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The boolean SYSTEM? value indicates that an application is a system component
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or not. Finally USERS is a list of UIDs of all users for which this
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application is allowed location info access. An empty users list means all
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users are allowed."
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(string-append
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"[" name "]\n"
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"allowed=" (bool allowed?)
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"system=" (bool system?)
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"users=" (string-join users ";") "\n"))
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(define %standard-geoclue-applications
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(list (geoclue-application "gnome-datetime-panel" #:system? #t)
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(geoclue-application "epiphany" #:system? #f)
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(geoclue-application "firefox" #:system? #f)))
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(define* (geoclue-configuration-file config)
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"Return a geoclue configuration file."
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(plain-file "geoclue.conf"
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(string-append
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"[agent]\n"
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"whitelist="
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(string-join (geoclue-configuration-whitelist config)
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";") "\n"
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"[wifi]\n"
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"url=" (geoclue-configuration-wifi-geolocation-url config) "\n"
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"submit-data=" (bool (geoclue-configuration-submit-data? config))
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"submission-url="
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(geoclue-configuration-wifi-submission-url config) "\n"
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"submission-nick="
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(geoclue-configuration-submission-nick config)
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"\n"
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(string-join (geoclue-configuration-applications config)
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"\n"))))
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(define (geoclue-dbus-service config)
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(list (wrapped-dbus-service (geoclue-configuration-geoclue config)
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"libexec/geoclue"
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"GEOCLUE_CONFIG_FILE"
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(geoclue-configuration-file config))))
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(define (geoclue-dmd-service config)
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"Return a GeoClue dmd service for CONFIG."
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;; TODO: Remove when D-Bus activation works.
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(let ((geoclue (geoclue-configuration-geoclue config))
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(config (geoclue-configuration-file config)))
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(list (dmd-service
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(documentation "Run the GeoClue location service.")
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(provision '(geoclue-daemon))
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(requirement '(dbus-system))
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(start #~(make-forkexec-constructor
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(list (string-append #$geoclue "/libexec/geoclue"))
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#:user "geoclue"
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#:environment-variables
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(list (string-append "GEOCLUE_CONFIG_FILE=" #$config))))
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(stop #~(make-kill-destructor))))))
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(define %geoclue-accounts
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(list (user-group (name "geoclue") (system? #t))
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(user-account
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(name "geoclue")
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(group "geoclue")
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(system? #t)
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(comment "GeoClue daemon user")
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(home-directory "/var/empty")
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(shell "/run/current-system/profile/sbin/nologin"))))
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(define geoclue-service-type
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(service-type (name 'geoclue)
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(extensions
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(list (service-extension dbus-root-service-type
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geoclue-dbus-service)
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(service-extension dmd-root-service-type
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geoclue-dmd-service)
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(service-extension account-service-type
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(const %geoclue-accounts))))))
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(define* (geoclue-service #:key (geoclue geoclue)
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(whitelist '())
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(wifi-geolocation-url
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;; Mozilla geolocation service:
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"https://location.services.mozilla.com/v1/geolocate?key=geoclue")
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(submit-data? #f)
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(wifi-submission-url
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"https://location.services.mozilla.com/v1/submit?key=geoclue")
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(submission-nick "geoclue")
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(applications %standard-geoclue-applications))
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"Return a service that runs the @command{geoclue} location service. This
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service provides a D-Bus interface to allow applications to request access to
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a user's physical location, and optionally to add information to online
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location databases. By default, only the GNOME date-time panel and the Icecat
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and Epiphany web browsers are able to ask for the user's location, and in the
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case of Icecat and Epiphany, both will ask the user for permission first. See
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@uref{https://wiki.freedesktop.org/www/Software/GeoClue/, the geoclue web
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site} for more information."
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(service geoclue-service-type
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(geoclue-configuration
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(geoclue geoclue)
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(whitelist whitelist)
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(wifi-geolocation-url wifi-geolocation-url)
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(submit-data? submit-data?)
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(wifi-submission-url wifi-submission-url)
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(submission-nick submission-nick)
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(applications applications))))
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;;;
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;;; Polkit privilege management service.
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;;;
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(define %polkit-accounts
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(list (user-group (name "polkitd") (system? #t))
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(user-account
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(name "polkitd")
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(group "polkitd")
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(system? #t)
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(comment "Polkit daemon user")
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(home-directory "/var/empty")
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(shell "/run/current-system/profile/sbin/nologin"))))
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(define %polkit-pam-services
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(list (unix-pam-service "polkitd")))
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(define (polkit-dmd-service polkit)
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"Return the <dmd-service> for POLKIT."
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;; TODO: Remove when D-Bus activation works.
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(list (dmd-service
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(documentation "Run the polkit privilege management service.")
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(provision '(polkit-daemon))
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(requirement '(dbus-system))
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(start #~(make-forkexec-constructor
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(list (string-append #$polkit "/lib/polkit-1/polkitd"))))
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(stop #~(make-kill-destructor)))))
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(define polkit-service-type
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;; TODO: Make it extensible so it can collect policy files from other
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;; services.
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(service-type (name 'polkit)
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(extensions
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(list (service-extension account-service-type
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(const %polkit-accounts))
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(service-extension pam-root-service-type
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(const %polkit-pam-services))
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(service-extension dbus-root-service-type
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list)
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(service-extension dmd-root-service-type
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polkit-dmd-service)))))
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(define* (polkit-service #:key (polkit polkit))
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"Return a service that runs the @command{polkit} privilege management
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service. By querying the @command{polkit} service, a privileged system
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component can know when it should grant additional capabilities to ordinary
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users. For example, an ordinary user can be granted the capability to suspend
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the system if the user is logged in locally."
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(service polkit-service-type polkit))
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;;;
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;;; Elogind login and seat management service.
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;;;
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(define-record-type* <elogind-configuration> elogind-configuration
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make-elogind-configuration
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elogind-configuration
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(elogind elogind-package
|
||
(default elogind))
|
||
(kill-user-processes? elogind-kill-user-processes?
|
||
(default #f))
|
||
(kill-only-users elogind-kill-only-users
|
||
(default '()))
|
||
(kill-exclude-users elogind-kill-exclude-users
|
||
(default '("root")))
|
||
(inhibit-delay-max-seconds elogind-inhibit-delay-max-seconds
|
||
(default 5))
|
||
(handle-power-key elogind-handle-power-key
|
||
(default 'poweroff))
|
||
(handle-suspend-key elogind-handle-suspend-key
|
||
(default 'suspend))
|
||
(handle-hibernate-key elogind-handle-hibernate-key
|
||
;; (default 'hibernate)
|
||
;; XXX Ignore it for now, since we don't
|
||
;; yet handle resume-from-hibernation in
|
||
;; our initrd.
|
||
(default 'ignore))
|
||
(handle-lid-switch elogind-handle-lid-switch
|
||
(default 'suspend))
|
||
(handle-lid-switch-docked elogind-handle-lid-switch-docked
|
||
(default 'ignore))
|
||
(power-key-ignore-inhibited? elogind-power-key-ignore-inhibited?
|
||
(default #f))
|
||
(suspend-key-ignore-inhibited? elogind-suspend-key-ignore-inhibited?
|
||
(default #f))
|
||
(hibernate-key-ignore-inhibited? elogind-hibernate-key-ignore-inhibited?
|
||
(default #f))
|
||
(lid-switch-ignore-inhibited? elogind-lid-switch-ignore-inhibited?
|
||
(default #t))
|
||
(holdoff-timeout-seconds elogind-holdoff-timeout-seconds
|
||
(default 30))
|
||
(idle-action elogind-idle-action
|
||
(default 'ignore))
|
||
(idle-action-seconds elogind-idle-action-seconds
|
||
(default (* 30 60)))
|
||
(runtime-directory-size-percent elogind-runtime-directory-size-percent
|
||
(default 10))
|
||
(runtime-directory-size elogind-runtime-directory-size
|
||
(default #f))
|
||
(remove-ipc? elogind-remove-ipc?
|
||
(default #t))
|
||
|
||
(suspend-state elogind-suspend-state
|
||
(default '("mem" "standby" "freeze")))
|
||
(suspend-mode elogind-suspend-mode
|
||
(default '()))
|
||
(hibernate-state elogind-hibernate-state
|
||
(default '("disk")))
|
||
(hibernate-mode elogind-hibernate-mode
|
||
(default '("platform" "shutdown")))
|
||
(hybrid-sleep-state elogind-hybrid-sleep-state
|
||
(default '("disk")))
|
||
(hybrid-sleep-mode elogind-hybrid-sleep-mode
|
||
(default
|
||
'("suspend" "platform" "shutdown"))))
|
||
|
||
(define (elogind-configuration-file config)
|
||
(define (yesno x)
|
||
(match x
|
||
(#t "yes")
|
||
(#f "no")
|
||
(_ (error "expected #t or #f, instead got:" x))))
|
||
(define char-set:user-name
|
||
(string->char-set "abcdefghijklmnopqrstuvwxyz0123456789_-"))
|
||
(define (valid-list? l pred)
|
||
(and-map (lambda (x) (string-every pred x)) l))
|
||
(define (user-name-list users)
|
||
(unless (valid-list? users char-set:user-name)
|
||
(error "invalid user list" users))
|
||
(string-join users " "))
|
||
(define (enum val allowed)
|
||
(unless (memq val allowed)
|
||
(error "invalid value" val allowed))
|
||
(symbol->string val))
|
||
(define (non-negative-integer x)
|
||
(unless (exact-integer? x) (error "not an integer" x))
|
||
(when (negative? x) (error "negative number not allowed" x))
|
||
(number->string x))
|
||
(define handle-actions
|
||
'(ignore poweroff reboot halt kexec suspend hibernate hybrid-sleep lock))
|
||
(define (handle-action x)
|
||
(enum x handle-actions))
|
||
(define (sleep-list tokens)
|
||
(unless (valid-list? tokens char-set:user-name)
|
||
(error "invalid sleep list" tokens))
|
||
(string-join tokens " "))
|
||
(define-syntax ini-file-clause
|
||
(syntax-rules ()
|
||
((_ config (prop (parser getter)))
|
||
(string-append prop "=" (parser (getter config)) "\n"))
|
||
((_ config str)
|
||
(string-append str "\n"))))
|
||
(define-syntax-rule (ini-file config file clause ...)
|
||
(plain-file file (string-append (ini-file-clause config clause) ...)))
|
||
(ini-file
|
||
config "logind.conf"
|
||
"[Login]"
|
||
("KillUserProcesses" (yesno elogind-kill-user-processes?))
|
||
("KillOnlyUsers" (user-name-list elogind-kill-only-users))
|
||
("KillExcludeUsers" (user-name-list elogind-kill-exclude-users))
|
||
("InhibitDelayMaxSecs" (non-negative-integer elogind-inhibit-delay-max-seconds))
|
||
("HandlePowerKey" (handle-action elogind-handle-power-key))
|
||
("HandleSuspendKey" (handle-action elogind-handle-suspend-key))
|
||
("HandleHibernateKey" (handle-action elogind-handle-hibernate-key))
|
||
("HandleLidSwitch" (handle-action elogind-handle-lid-switch))
|
||
("HandleLidSwitchDocked" (handle-action elogind-handle-lid-switch-docked))
|
||
("PowerKeyIgnoreInhibited" (yesno elogind-power-key-ignore-inhibited?))
|
||
("SuspendKeyIgnoreInhibited" (yesno elogind-suspend-key-ignore-inhibited?))
|
||
("HibernateKeyIgnoreInhibited" (yesno elogind-hibernate-key-ignore-inhibited?))
|
||
("LidSwitchIgnoreInhibited" (yesno elogind-lid-switch-ignore-inhibited?))
|
||
("HoldoffTimeoutSecs" (non-negative-integer elogind-holdoff-timeout-seconds))
|
||
("IdleAction" (handle-action elogind-idle-action))
|
||
("IdleActionSeconds" (non-negative-integer elogind-idle-action-seconds))
|
||
("RuntimeDirectorySize"
|
||
(identity
|
||
(lambda (config)
|
||
(match (elogind-runtime-directory-size-percent config)
|
||
(#f (non-negative-integer (elogind-runtime-directory-size config)))
|
||
(percent (string-append (non-negative-integer percent) "%"))))))
|
||
("RemoveIpc" (yesno elogind-remove-ipc?))
|
||
"[Sleep]"
|
||
("SuspendState" (sleep-list elogind-suspend-state))
|
||
("SuspendMode" (sleep-list elogind-suspend-mode))
|
||
("HibernateState" (sleep-list elogind-hibernate-state))
|
||
("HibernateMode" (sleep-list elogind-hibernate-mode))
|
||
("HybridSleepState" (sleep-list elogind-hybrid-sleep-state))
|
||
("HybridSleepMode" (sleep-list elogind-hybrid-sleep-mode))))
|
||
|
||
(define (elogind-dmd-service config)
|
||
"Return a dmd service for elogind, using @var{config}."
|
||
(let ((config-file (elogind-configuration-file config))
|
||
(elogind (elogind-package config)))
|
||
(list (dmd-service
|
||
(documentation "Run the elogind login and seat management service.")
|
||
(provision '(elogind))
|
||
(requirement '(dbus-system))
|
||
|
||
(start #~(make-forkexec-constructor
|
||
(list (string-append #$elogind "/libexec/elogind/elogind"))
|
||
#:environment-variables
|
||
(list (string-append "ELOGIND_CONF_FILE=" #$config-file))))
|
||
(stop #~(make-kill-destructor))))))
|
||
|
||
(define elogind-service-type
|
||
(service-type (name 'elogind)
|
||
(extensions
|
||
(list (service-extension dmd-root-service-type
|
||
elogind-dmd-service)
|
||
(service-extension dbus-root-service-type
|
||
(compose list elogind-package))
|
||
(service-extension udev-service-type
|
||
(compose list elogind-package))
|
||
;; TODO: Extend polkit(?) and PAM.
|
||
))))
|
||
|
||
(define* (elogind-service #:key (config (elogind-configuration)))
|
||
"Return a service that runs the @command{elogind} login and seat management
|
||
service. The @command{elogind} service integrates with PAM to allow other
|
||
system components to know the set of logged-in users as well as their session
|
||
types (graphical, console, remote, etc.). It can also clean up after users
|
||
when they log out."
|
||
(service elogind-service-type config))
|
||
|
||
|
||
;;;
|
||
;;; The default set of desktop services.
|
||
;;;
|
||
|
||
(define %desktop-services
|
||
;; List of services typically useful for a "desktop" use case.
|
||
(cons* (slim-service)
|
||
|
||
;; The D-Bus clique.
|
||
(avahi-service)
|
||
(wicd-service)
|
||
(upower-service)
|
||
(colord-service)
|
||
(geoclue-service)
|
||
(polkit-service)
|
||
(elogind-service)
|
||
(dbus-service)
|
||
|
||
(ntp-service)
|
||
|
||
%base-services))
|
||
|
||
;;; desktop.scm ends here
|