gnu/services/games.scm


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137

;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2018 Arun Isaac <arunisaac@systemreboot.net>
;;; Copyright © 2022 Ludovic Courtès <ludo@gnu.org>
;;;
;;; 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.
;;;
;;; GNU Guix 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 GNU Guix.  If not, see <http://www.gnu.org/licenses/>.

(define-module (gnu services games)
  #:use-module (gnu services)
  #:use-module (gnu services configuration)
  #:use-module (gnu services shepherd)
  #:use-module (gnu packages admin)
  #:use-module (gnu packages games)
  #:use-module (gnu system shadow)
  #:use-module ((gnu system file-systems) #:select (file-system-mapping))
  #:use-module (gnu build linux-container)
  #:autoload   (guix least-authority) (least-authority-wrapper)
  #:use-module (guix gexp)
  #:use-module (guix modules)
  #:use-module (guix packages)
  #:use-module (guix records)
  #:use-module (ice-9 match)
  #:export (joycond-configuration
            joycond-configuration?
            joycond-service-type

            wesnothd-configuration
            wesnothd-configuration?
            wesnothd-service-type))

;;;
;;; Joycond
;;;

(define-configuration/no-serialization joycond-configuration
  (package (package joycond) "The joycond package to use"))

(define (joycond-shepherd-service config)
  (let ((joycond (joycond-configuration-package config)))
    (list (shepherd-service
           (documentation "Run joycond.")
           (provision '(joycond))
           (requirement '(bluetooth))
           (start #~(make-forkexec-constructor
                     (list #$(file-append joycond "/bin/joycond"))))
           (stop #~(make-kill-destructor))))))

(define joycond-service-type
  (service-type
   (name 'joycond)
   (description
    "Run @command{joycond} for pairing Nintendo joycons via Bluetooth.")
   (extensions
    (list (service-extension shepherd-root-service-type
                             joycond-shepherd-service)))
   (default-value (joycond-configuration))))


;;;
;;; The Battle for Wesnoth server
;;;

(define-record-type* <wesnothd-configuration>
  wesnothd-configuration make-wesnothd-configuration wesnothd-configuration?
  (package wesnothd-configuration-package
           (default wesnoth-server))
  (port wesnothd-configuration-port
        (default 15000)))

(define %wesnothd-accounts
  (list (user-account
         (name "wesnothd")
         (group "wesnothd")
         (system? #t)
         (comment "Wesnoth daemon user")
         (home-directory "/var/empty")
         (shell (file-append shadow "/sbin/nologin")))
        (user-group
         (name "wesnothd")
         (system? #t))))

(define wesnothd-shepherd-service
  (match-lambda
    (($ <wesnothd-configuration> package port)
     (let ((wesnothd (least-authority-wrapper
                      (file-append package "/bin/wesnothd")
                      #:name "wesnothd"
                      #:mappings (list (file-system-mapping
                                        (source "/var/run/wesnothd")
                                        (target source)
                                        (writable? #t)))
                      #:namespaces (delq 'net %namespaces))))
       (shepherd-service
        (documentation "The Battle for Wesnoth server")
        (provision '(wesnoth-daemon))
        (requirement '(networking))
        (start #~(make-forkexec-constructor
                  (list #$wesnothd "-p" #$(number->string port))
                  #:user "wesnothd" #:group "wesnothd"))
        (stop #~(make-kill-destructor)))))))

(define wesnothd-activation
  (with-imported-modules '((guix build utils))
    #~(begin
        (use-modules (guix build utils))

        (let* ((user (getpw "wesnothd"))
               (directory "/var/run/wesnothd"))
          ;; wesnothd creates a Unix-domain socket in DIRECTORY.
          (mkdir-p directory)
          (chown directory (passwd:uid user) (passwd:gid user))))))

(define wesnothd-service-type
  (service-type
   (name 'wesnothd)
   (description
    "Run The Battle for Wesnoth server @command{wesnothd}.")
   (extensions
    (list (service-extension account-service-type
                             (const %wesnothd-accounts))
          (service-extension activation-service-type
                             (const wesnothd-activation))
          (service-extension shepherd-root-service-type
                             (compose list wesnothd-shepherd-service))))
   (default-value (wesnothd-configuration))))