unofficial mirror of guix-patches@gnu.org 
 help / color / mirror / code / Atom feed
blob 8ffea3b9dd03508ead76c4b43ea2a03da5ae0c7b 40729 bytes (raw)
name: gnu/services/xorg.scm 	 # note: path name is non-authoritative(*)

   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
 138
 139
 140
 141
 142
 143
 144
 145
 146
 147
 148
 149
 150
 151
 152
 153
 154
 155
 156
 157
 158
 159
 160
 161
 162
 163
 164
 165
 166
 167
 168
 169
 170
 171
 172
 173
 174
 175
 176
 177
 178
 179
 180
 181
 182
 183
 184
 185
 186
 187
 188
 189
 190
 191
 192
 193
 194
 195
 196
 197
 198
 199
 200
 201
 202
 203
 204
 205
 206
 207
 208
 209
 210
 211
 212
 213
 214
 215
 216
 217
 218
 219
 220
 221
 222
 223
 224
 225
 226
 227
 228
 229
 230
 231
 232
 233
 234
 235
 236
 237
 238
 239
 240
 241
 242
 243
 244
 245
 246
 247
 248
 249
 250
 251
 252
 253
 254
 255
 256
 257
 258
 259
 260
 261
 262
 263
 264
 265
 266
 267
 268
 269
 270
 271
 272
 273
 274
 275
 276
 277
 278
 279
 280
 281
 282
 283
 284
 285
 286
 287
 288
 289
 290
 291
 292
 293
 294
 295
 296
 297
 298
 299
 300
 301
 302
 303
 304
 305
 306
 307
 308
 309
 310
 311
 312
 313
 314
 315
 316
 317
 318
 319
 320
 321
 322
 323
 324
 325
 326
 327
 328
 329
 330
 331
 332
 333
 334
 335
 336
 337
 338
 339
 340
 341
 342
 343
 344
 345
 346
 347
 348
 349
 350
 351
 352
 353
 354
 355
 356
 357
 358
 359
 360
 361
 362
 363
 364
 365
 366
 367
 368
 369
 370
 371
 372
 373
 374
 375
 376
 377
 378
 379
 380
 381
 382
 383
 384
 385
 386
 387
 388
 389
 390
 391
 392
 393
 394
 395
 396
 397
 398
 399
 400
 401
 402
 403
 404
 405
 406
 407
 408
 409
 410
 411
 412
 413
 414
 415
 416
 417
 418
 419
 420
 421
 422
 423
 424
 425
 426
 427
 428
 429
 430
 431
 432
 433
 434
 435
 436
 437
 438
 439
 440
 441
 442
 443
 444
 445
 446
 447
 448
 449
 450
 451
 452
 453
 454
 455
 456
 457
 458
 459
 460
 461
 462
 463
 464
 465
 466
 467
 468
 469
 470
 471
 472
 473
 474
 475
 476
 477
 478
 479
 480
 481
 482
 483
 484
 485
 486
 487
 488
 489
 490
 491
 492
 493
 494
 495
 496
 497
 498
 499
 500
 501
 502
 503
 504
 505
 506
 507
 508
 509
 510
 511
 512
 513
 514
 515
 516
 517
 518
 519
 520
 521
 522
 523
 524
 525
 526
 527
 528
 529
 530
 531
 532
 533
 534
 535
 536
 537
 538
 539
 540
 541
 542
 543
 544
 545
 546
 547
 548
 549
 550
 551
 552
 553
 554
 555
 556
 557
 558
 559
 560
 561
 562
 563
 564
 565
 566
 567
 568
 569
 570
 571
 572
 573
 574
 575
 576
 577
 578
 579
 580
 581
 582
 583
 584
 585
 586
 587
 588
 589
 590
 591
 592
 593
 594
 595
 596
 597
 598
 599
 600
 601
 602
 603
 604
 605
 606
 607
 608
 609
 610
 611
 612
 613
 614
 615
 616
 617
 618
 619
 620
 621
 622
 623
 624
 625
 626
 627
 628
 629
 630
 631
 632
 633
 634
 635
 636
 637
 638
 639
 640
 641
 642
 643
 644
 645
 646
 647
 648
 649
 650
 651
 652
 653
 654
 655
 656
 657
 658
 659
 660
 661
 662
 663
 664
 665
 666
 667
 668
 669
 670
 671
 672
 673
 674
 675
 676
 677
 678
 679
 680
 681
 682
 683
 684
 685
 686
 687
 688
 689
 690
 691
 692
 693
 694
 695
 696
 697
 698
 699
 700
 701
 702
 703
 704
 705
 706
 707
 708
 709
 710
 711
 712
 713
 714
 715
 716
 717
 718
 719
 720
 721
 722
 723
 724
 725
 726
 727
 728
 729
 730
 731
 732
 733
 734
 735
 736
 737
 738
 739
 740
 741
 742
 743
 744
 745
 746
 747
 748
 749
 750
 751
 752
 753
 754
 755
 756
 757
 758
 759
 760
 761
 762
 763
 764
 765
 766
 767
 768
 769
 770
 771
 772
 773
 774
 775
 776
 777
 778
 779
 780
 781
 782
 783
 784
 785
 786
 787
 788
 789
 790
 791
 792
 793
 794
 795
 796
 797
 798
 799
 800
 801
 802
 803
 804
 805
 806
 807
 808
 809
 810
 811
 812
 813
 814
 815
 816
 817
 818
 819
 820
 821
 822
 823
 824
 825
 826
 827
 828
 829
 830
 831
 832
 833
 834
 835
 836
 837
 838
 839
 840
 841
 842
 843
 844
 845
 846
 847
 848
 849
 850
 851
 852
 853
 854
 855
 856
 857
 858
 859
 860
 861
 862
 863
 864
 865
 866
 867
 868
 869
 870
 871
 872
 873
 874
 875
 876
 877
 878
 879
 880
 881
 882
 883
 884
 885
 886
 887
 888
 889
 890
 891
 892
 893
 894
 895
 896
 897
 898
 899
 900
 901
 902
 903
 904
 905
 906
 907
 908
 909
 910
 911
 912
 913
 914
 915
 916
 917
 918
 919
 920
 921
 922
 923
 924
 925
 926
 927
 928
 929
 930
 931
 932
 933
 934
 935
 936
 937
 938
 939
 940
 941
 942
 943
 944
 945
 946
 947
 948
 949
 950
 951
 952
 953
 954
 955
 956
 957
 958
 959
 960
 961
 962
 963
 964
 965
 966
 967
 968
 969
 970
 971
 972
 973
 974
 975
 976
 977
 978
 979
 980
 981
 982
 983
 984
 985
 986
 987
 988
 989
 990
 991
 992
 993
 994
 995
 996
 997
 998
 999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
 
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2017 Andy Wingo <wingo@igalia.com>
;;; Copyright © 2013, 2014, 2015, 2016, 2017, 2019, 2020 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2015 Sou Bunnbu <iyzsong@gmail.com>
;;; Copyright © 2018, 2019 Timothy Sample <samplet@ngyro.com>
;;; Copyright © 2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
;;; Copyright © 2019 Tim Gesthuizen <tim.gesthuizen@yahoo.de>
;;; Copyright © 2020 shtwzrd <shtwzrd@protonmail.com>
;;; Copyright © 2020 Jakub Kądziołka <kuba@kadziolka.net>
;;; Copyright © 2020 Alex Griffin <a@ajgrf.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.
;;;
;;; 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 xorg)
  #:use-module (gnu artwork)
  #:use-module (gnu services)
  #:use-module (gnu services shepherd)
  #:use-module (gnu system pam)
  #:use-module (gnu system keyboard)
  #:use-module (gnu services base)
  #:use-module (gnu services dbus)
  #:use-module (gnu packages base)
  #:use-module (gnu packages guile)
  #:use-module (gnu packages xorg)
  #:use-module (gnu packages fonts)
  #:use-module (gnu packages gl)
  #:use-module (gnu packages glib)
  #:use-module (gnu packages display-managers)
  #:use-module (gnu packages freedesktop)
  #:use-module (gnu packages gnustep)
  #:use-module (gnu packages gnome)
  #:use-module (gnu packages admin)
  #:use-module (gnu packages bash)
  #:use-module (gnu system shadow)
  #:use-module (guix build-system trivial)
  #:use-module (guix gexp)
  #:use-module (guix store)
  #:use-module (guix packages)
  #:use-module (guix derivations)
  #:use-module (guix records)
  #:use-module (guix deprecation)
  #:use-module (srfi srfi-1)
  #:use-module (srfi srfi-9)
  #:use-module (srfi srfi-26)
  #:use-module (ice-9 match)
  #:export (xorg-configuration
            xorg-configuration?
            xorg-configuration-modules
            xorg-configuration-fonts
            xorg-configuration-drivers
            xorg-configuration-resolutions
            xorg-configuration-extra-config
            xorg-configuration-server
            xorg-configuration-server-arguments

            %default-xorg-modules
            %default-xorg-fonts
            %default-xorg-server-arguments

            xorg-wrapper
            xorg-start-command
            xinitrc
            xorg-server-service-type

            %default-slim-theme
            %default-slim-theme-name

            slim-configuration
            slim-configuration?
            slim-configuration-slim
            slim-configuration-allow-empty-passwords?
            slim-configuration-auto-login?
            slim-configuration-default-user
            slim-configuration-theme
            slim-configuration-theme-name
            slim-configuration-xauth
            slim-configuration-shepherd
            slim-configuration-auto-login-session
            slim-configuration-xorg
            slim-configuration-display
            slim-configuration-vt
            slim-configuration-sessreg

            slim-service-type

            screen-locker
            screen-locker?
            screen-locker-service-type
            screen-locker-service

            localed-configuration
            localed-configuration?
            localed-service-type

            gdm-configuration
            gdm-service-type

            handle-xorg-configuration
            set-xorg-configuration))

;;; Commentary:
;;;
;;; Services that relate to the X Window System.
;;;
;;; Code:

(define %default-xorg-modules
  ;; Default list of modules loaded by the server.  When multiple drivers
  ;; match, the first one in the list is loaded.
  (list xf86-video-vesa
        xf86-video-fbdev
        xf86-video-amdgpu
        xf86-video-ati
        xf86-video-cirrus
        xf86-video-intel
        xf86-video-mach64
        xf86-video-nouveau
        xf86-video-nv
        xf86-video-sis

        ;; Libinput is the new thing and is recommended over evdev/synaptics:
        ;; <http://who-t.blogspot.fr/2015/01/xf86-input-libinput-compatibility-with.html>.
        xf86-input-libinput

        xf86-input-evdev
        xf86-input-keyboard
        xf86-input-mouse
        xf86-input-synaptics))

(define %default-xorg-fonts
  ;; Default list of fonts available to the X server.
  (list (file-append font-alias "/share/fonts/X11/75dpi")
        (file-append font-alias "/share/fonts/X11/100dpi")
        (file-append font-alias "/share/fonts/X11/misc")
        (file-append font-alias "/share/fonts/X11/cyrillic")
        (file-append font-misc-misc               ;default fonts for xterm
                     "/share/fonts/X11/misc")
        (file-append font-adobe75dpi "/share/fonts/X11/75dpi")))

(define %default-xorg-server-arguments
  ;; Default command-line arguments for X.
  '("-nolisten" "tcp"))

;; Configuration of an Xorg server.
(define-record-type* <xorg-configuration>
  xorg-configuration make-xorg-configuration
  xorg-configuration?
  (modules          xorg-configuration-modules    ;list of packages
                    ; filter out modules not supported on current system
                    (default (filter
                              (lambda (p)
                                (member (%current-system)
                                        (package-supported-systems p)))
                              %default-xorg-modules)))
  (fonts            xorg-configuration-fonts      ;list of packges
                    (default %default-xorg-fonts))
  (drivers          xorg-configuration-drivers    ;list of strings
                    (default '()))
  (resolutions      xorg-configuration-resolutions ;list of tuples
                    (default '()))
  (keyboard-layout  xorg-configuration-keyboard-layout ;#f | <keyboard-layout>
                    (default #f))
  (extra-config     xorg-configuration-extra-config ;list of strings
                    (default '()))
  (server           xorg-configuration-server     ;package
                    (default xorg-server))
  (server-arguments xorg-configuration-server-arguments ;list of strings
                    (default %default-xorg-server-arguments)))

(define (xorg-configuration->file config)
  "Compute an Xorg configuration file corresponding to CONFIG, an
<xorg-configuration> record."
  (let ((xorg-server (xorg-configuration-server config)))
    (define all-modules
      ;; 'xorg-server' provides 'fbdevhw.so' etc.
      (append (xorg-configuration-modules config)
              (list xorg-server)))

    (define build
      #~(begin
          (use-modules (ice-9 match)
                       (srfi srfi-1)
                       (srfi srfi-26))

          (call-with-output-file #$output
            (lambda (port)
              (define drivers
                '#$(xorg-configuration-drivers config))

              (define (device-section driver)
                (string-append "
Section \"Device\"
  Identifier \"device-" driver "\"
  Driver \"" driver "\"
EndSection"))

              (define (screen-section driver resolutions)
                (string-append "
Section \"Screen\"
  Identifier \"screen-" driver "\"
  Device \"device-" driver "\"
  SubSection \"Display\"
    Modes "
  (string-join (map (match-lambda
                      ((x y)
                       (string-append "\"" (number->string x)
                                      "x" (number->string y) "\"")))
                    resolutions)) "
  EndSubSection
EndSection"))

              (define (input-class-section layout variant model options)
                (string-append "
Section \"InputClass\"
  Identifier \"evdev keyboard catchall\"
  MatchIsKeyboard \"on\"
  Option \"XkbLayout\" " (object->string layout)
  (if variant
      (string-append "  Option \"XkbVariant\" \""
                     variant "\"")
      "")
  (if model
      (string-append "  Option \"XkbModel\" \""
                     model "\"")
      "")
  (match options
    (()
     "")
    (_
     (string-append "  Option \"XkbOptions\" \""
                    (string-join options ",") "\""))) "

  MatchDevicePath \"/dev/input/event*\"
  Driver \"evdev\"
EndSection\n"))

              (define (expand modules)
                ;; Append to MODULES the relevant /lib/xorg/modules
                ;; sub-directories.
                (append-map (lambda (module)
                              (filter-map (lambda (directory)
                                            (let ((full (string-append module
                                                                       directory)))
                                              (and (file-exists? full)
                                                   full)))
                                          '("/lib/xorg/modules/drivers"
                                            "/lib/xorg/modules/input"
                                            "/lib/xorg/modules/multimedia"
                                            "/lib/xorg/modules/extensions")))
                            modules))

              (display "Section \"Files\"\n" port)
              (for-each (lambda (font)
                          (format port "  FontPath \"~a\"~%" font))
                        '#$(xorg-configuration-fonts config))
              (for-each (lambda (module)
                          (format port
                                  "  ModulePath \"~a\"~%"
                                  module))
                        (append (expand '#$all-modules)

                                ;; For fbdevhw.so and so on.
                                (list #$(file-append xorg-server
                                                     "/lib/xorg/modules"))))
              (display "EndSection\n" port)
              (display "
Section \"ServerFlags\"
  Option \"AllowMouseOpenFail\" \"on\"
EndSection\n" port)

              (display (string-join (map device-section drivers) "\n")
                       port)
              (newline port)
              (display (string-join
                        (map (cut screen-section <>
                                  '#$(xorg-configuration-resolutions config))
                             drivers)
                        "\n")
                       port)
              (newline port)

              (let ((layout  #$(and=> (xorg-configuration-keyboard-layout config)
                                      keyboard-layout-name))
                    (variant #$(and=> (xorg-configuration-keyboard-layout config)
                                      keyboard-layout-variant))
                    (model   #$(and=> (xorg-configuration-keyboard-layout config)
                                      keyboard-layout-model))
                    (options '#$(and=> (xorg-configuration-keyboard-layout config)
                                       keyboard-layout-options)))
                (when layout
                  (display (input-class-section layout variant model options)
                           port)
                  (newline port)))

              (for-each (lambda (config)
                          (display config port))
                        '#$(xorg-configuration-extra-config config))))))

    (computed-file "xserver.conf" build)))

(define (xorg-configuration-directory modules)
  "Return a directory that contains the @code{.conf} files for X.org that
includes the @code{share/X11/xorg.conf.d} directories of each package listed
in @var{modules}."
  (with-imported-modules '((guix build utils))
    (computed-file "xorg.conf.d"
                   #~(begin
                       (use-modules (guix build utils)
                                    (srfi srfi-1))

                       (define files
                         (append-map (lambda (module)
                                       (find-files (string-append
                                                    module
                                                    "/share/X11/xorg.conf.d")
                                                   "\\.conf$"))
                                     (list #$@modules)))

                       (mkdir #$output)
                       (for-each (lambda (file)
                                   (symlink file
                                            (string-append #$output "/"
                                                           (basename file))))
                                 files)
                       #t))))

(define* (xorg-wrapper #:optional (config (xorg-configuration)))
  "Return a derivation that builds a script to start the X server with the
given @var{config}.  The resulting script should be used in place of
@code{/usr/bin/X}."
  (define exp
    ;; Write a small wrapper around the X server.
    #~(begin
        (setenv "XORG_DRI_DRIVER_PATH" (string-append #$mesa "/lib/dri"))
        (setenv "XKB_BINDIR" (string-append #$xkbcomp "/bin"))

        (let ((X (string-append #$(xorg-configuration-server config) "/bin/X")))
          (apply execl X X
                 "-xkbdir" (string-append #$xkeyboard-config "/share/X11/xkb")
                 "-config" #$(xorg-configuration->file config)
                 "-configdir" #$(xorg-configuration-directory
                                 (xorg-configuration-modules config))
                 (cdr (command-line))))))

  (program-file "X-wrapper" exp))

(define* (xorg-start-command #:optional (config (xorg-configuration)))
  "Return a @code{startx} script in which the modules, fonts, etc. specified
in @var{config}, are available.  The result should be used in place of
@code{startx}."
  (define X
    (xorg-wrapper config))

  (define exp
    ;; Write a small wrapper around the X server.
    #~(apply execl #$X #$X ;; Second #$X is for argv[0].
             "-logverbose" "-verbose" "-terminate"
             #$@(xorg-configuration-server-arguments config)
              (cdr (command-line))))

  (program-file "startx" exp))

(define* (xinitrc #:key fallback-session)
  "Return a system-wide xinitrc script that starts the specified X session,
which should be passed to this script as the first argument.  If not, the
@var{fallback-session} will be used or, if @var{fallback-session} is false, a
desktop session from the system or user profile will be used."
  (define builder
    #~(begin
        (use-modules (ice-9 match)
                     (ice-9 regex)
                     (ice-9 ftw)
                     (ice-9 rdelim)
                     (srfi srfi-1)
                     (srfi srfi-26))

        (define (close-all-fdes)
          ;; Close all the open file descriptors except 0 to 2.
          (let loop ((fd 3))
            (when (< fd 4096)               ;FIXME: use sysconf + _SC_OPEN_MAX
              (false-if-exception (close-fdes fd))
              (loop (+ 1 fd)))))

        (define (exec-from-login-shell command . args)
          ;; Run COMMAND from a login shell so that it gets to see the same
          ;; environment variables that one gets when logging in on a tty, for
          ;; instance.
          (let* ((pw    (getpw (getuid)))
                 (shell (passwd:shell pw)))
            ;; Close any open file descriptors.  This is all the more
            ;; important that SLiM itself exec's us directly without closing
            ;; its own file descriptors!
            (close-all-fdes)

            ;; The '--login' option is supported at least by Bash and zsh.
            (execl shell shell "--login" "-c"
                   (string-join (cons command args)))))

        (define system-profile
          "/run/current-system/profile")

        (define user-profile
          (and=> (getpw (getuid))
                 (lambda (pw)
                   (string-append (passwd:dir pw) "/.guix-profile"))))

        (define (xsession-command desktop-file)
          ;; Read from DESKTOP-FILE its X session command and return it as a
          ;; list.
          (define exec-regexp
            (make-regexp "^[[:blank:]]*Exec=(.*)$"))

          (call-with-input-file desktop-file
            (lambda (port)
              (let loop ()
                (match (read-line port)
                  ((? eof-object?) #f)
                  ((= (cut regexp-exec exec-regexp <>) result)
                   (if result
                       (string-tokenize (match:substring result 1))
                       (loop))))))))

        (define (find-session profile)
          ;; Return an X session command from PROFILE or #f if none was found.
          (let ((directory (string-append profile "/share/xsessions")))
            (match (scandir directory
                            (cut string-suffix? ".desktop" <>))
              ((or () #f)
               #f)
              ((sessions ...)
               (any xsession-command
                    (map (cut string-append directory "/" <>)
                         sessions))))))

        (let* ((home          (getenv "HOME"))
               (xsession-file (string-append home "/.xsession"))
               (session       (match (command-line)
                                ((_)
                                 #$(if fallback-session
                                       #~(list #$fallback-session)
                                       #f))
                                ((_ x ..1)
                                 x))))
          (if (file-exists? xsession-file)
              ;; Run ~/.xsession when it exists.
              (apply exec-from-login-shell xsession-file
                     (or session '()))
              ;; Otherwise, start the specified session or a fallback.
              (apply exec-from-login-shell
                     (or session
                         (find-session user-profile)
                         (find-session system-profile)))))))

  (program-file "xinitrc" builder))

(define-syntax handle-xorg-configuration
  (syntax-rules ()
    "Generate the `compose' and `extend' entries of a login manager
`service-type' to handle specifying the `xorg-configuration' through
a `service-extension', as used by `set-xorg-configuration'."
    ((_ configuration-record service-type-definition)
     (service-type
       (inherit service-type-definition)
       (compose (lambda (extensions)
                  (match extensions
                    (() #f)
                    ((config . _) config))))
       (extend (lambda (config xorg-configuration)
                 (if xorg-configuration
                     (configuration-record
                      (inherit config)
                      (xorg-configuration xorg-configuration))
                     config)))))))

(define (xorg-server-profile-service config)
  ;; XXX: profile-service-type only accepts <package> objects.
  (list
   (package
     (name "xorg-wrapper")
     (version (package-version xorg-server))
     (source (xorg-wrapper config))
     (build-system trivial-build-system)
     (arguments
      '(#:modules ((guix build utils))
        #:builder
        (begin
          (use-modules (guix build utils))
          (let* ((source (assoc-ref %build-inputs "source"))
                 (out (assoc-ref %outputs "out"))
                 (bin (string-append out "/bin")))
            (mkdir-p bin)
            (symlink source (string-append bin "/X"))
            (symlink source (string-append bin "/Xorg"))
            #t))))
     (home-page (package-home-page xorg-server))
     (synopsis (package-synopsis xorg-server))
     (description (package-description xorg-server))
     (license (package-license xorg-server)))))

(define xorg-server-service-type
  (service-type
   (name 'xorg-server)
   (extensions
    (list (service-extension profile-service-type
                             xorg-server-profile-service)))
   (default-value (xorg-configuration))
   (description "Add @command{X} to the system profile, to be used with
@command{sx} or @command{xinit}.")))

\f
;;;
;;; SLiM log-in manager.
;;;

(define %default-slim-theme
  ;; Theme based on work by Felipe López.
  (file-append %artwork-repository "/slim"))

(define %default-slim-theme-name
  ;; This must be the name of the sub-directory in %DEFAULT-SLIM-THEME that
  ;; contains the actual theme files.
  "1.x")

(define-record-type* <slim-configuration>
  slim-configuration make-slim-configuration
  slim-configuration?
  (slim slim-configuration-slim
        (default slim))
  (allow-empty-passwords? slim-configuration-allow-empty-passwords?
                          (default #t))
  (auto-login? slim-configuration-auto-login?
               (default #f))
  (default-user slim-configuration-default-user
                (default ""))
  (theme slim-configuration-theme
         (default %default-slim-theme))
  (theme-name slim-configuration-theme-name
              (default %default-slim-theme-name))
  (xauth slim-configuration-xauth
         (default xauth))
  (shepherd slim-configuration-shepherd
            (default shepherd))
  (auto-login-session slim-configuration-auto-login-session
                      (default #f))
  (xorg-configuration slim-configuration-xorg
                      (default (xorg-configuration)))
  (display slim-configuration-display
           (default ":0"))
  (vt slim-configuration-vt
      (default "vt7"))
  (sessreg slim-configuration-sessreg
           (default sessreg)))

(define (slim-pam-service config)
  "Return a PAM service for @command{slim}."
  (list (unix-pam-service
         "slim"
         #:login-uid? #t
         #:allow-empty-passwords?
         (slim-configuration-allow-empty-passwords? config))))

(define (slim-shepherd-service config)
  (let* ((xinitrc (xinitrc #:fallback-session
                           (slim-configuration-auto-login-session config)))
         (xauth   (slim-configuration-xauth config))
         (startx  (xorg-start-command (slim-configuration-xorg config)))
         (display (slim-configuration-display config))
         (vt (slim-configuration-vt config))
         (shepherd   (slim-configuration-shepherd config))
         (theme-name (slim-configuration-theme-name config))
         (sessreg (slim-configuration-sessreg config))
         (lockfile (string-append "/var/run/slim-" vt ".lock")))
    (define slim.cfg
      (mixed-text-file "slim.cfg"  "
default_path /run/current-system/profile/bin
default_xserver " startx "
display_name " display "
xserver_arguments " vt "
xauth_path " xauth "/bin/xauth
authfile /var/run/slim-" vt ".auth
lockfile " lockfile "
logfile /var/log/slim-" vt ".log

# The login command.  '%session' is replaced by the chosen session name, one
# of the names specified in the 'sessions' setting: 'wmaker', 'xfce', etc.
login_cmd  exec " xinitrc " %session
sessiondir /run/current-system/profile/share/xsessions
session_msg session (F1 to change):
sessionstart_cmd " sessreg "/bin/sessreg -a -l $DISPLAY %user
sessionstop_cmd " sessreg "/bin/sessreg -d -l $DISPLAY %user

halt_cmd " shepherd "/sbin/halt
reboot_cmd " shepherd "/sbin/reboot\n"
(if (slim-configuration-auto-login? config)
    (string-append "auto_login yes\ndefault_user "
                   (slim-configuration-default-user config) "\n")
    "")
(if theme-name
    (string-append "current_theme " theme-name "\n")
    "")))

    (define theme
      (slim-configuration-theme config))

    (list (shepherd-service
           (documentation "Xorg display server")
           (provision (append
                       ;; For compatibility, also provide 'xorg-server'.
                       (if (string=? vt "vt7")
                           '(xorg-server)
                           '())

                       (list (symbol-append 'xorg-server-
                                            (string->symbol vt)))))
           (requirement '(user-processes host-name udev))
           (start
            #~(lambda ()
                ;; A stale lock file can prevent SLiM from starting, so remove it to
                ;; be on the safe side.
                (false-if-exception (delete-file lockfile))

                (fork+exec-command
                 (list (string-append #$(slim-configuration-slim config)
                                      "/bin/slim")
                       "-nodaemon")
                 #:environment-variables
                 (list (string-append "SLIM_CFGFILE=" #$slim.cfg)
                       #$@(if theme
                              (list #~(string-append "SLIM_THEMESDIR=" #$theme))
                              #~())))))
           (stop #~(make-kill-destructor))
           (respawn? #t)))))

(define slim-service-type
  (handle-xorg-configuration slim-configuration
    (service-type (name 'slim)
                  (extensions
                   (list (service-extension shepherd-root-service-type
                                            slim-shepherd-service)
                         (service-extension pam-root-service-type
                                            slim-pam-service)

                         ;; Unconditionally add xterm to the system profile, to
                         ;; avoid bad surprises.
                         (service-extension profile-service-type
                                            (const (list xterm)))))

                  (default-value (slim-configuration))
                  (description
                   "Run the SLiM graphical login manager for X11."))))

\f
;;;
;;; Screen lockers & co.
;;;

(define-record-type <screen-locker>
  (screen-locker name program empty?)
  screen-locker?
  (name    screen-locker-name)                     ;string
  (program screen-locker-program)                  ;gexp
  (empty?  screen-locker-allows-empty-passwords?)) ;Boolean

(define screen-locker-pam-services
  (match-lambda
    (($ <screen-locker> name _ empty?)
     (list (unix-pam-service name
                             #:allow-empty-passwords? empty?)))))

(define screen-locker-setuid-programs
  (compose list screen-locker-program))

(define screen-locker-service-type
  (service-type (name 'screen-locker)
                (extensions
                 (list (service-extension pam-root-service-type
                                          screen-locker-pam-services)
                       (service-extension setuid-program-service-type
                                          screen-locker-setuid-programs)))
                (description
                 "Allow the given program to be used as a screen locker for
the graphical server by making it setuid-root, so it can authenticate users,
and by creating a PAM service for it.")))

(define* (screen-locker-service package
                                #:optional
                                (program (package-name package))
                                #:key allow-empty-passwords?)
  "Add @var{package}, a package for a screen locker or screen saver whose
command is @var{program}, to the set of setuid programs and add a PAM entry
for it.  For example:

@lisp
 (screen-locker-service xlockmore \"xlock\")
@end lisp

makes the good ol' XlockMore usable."
  (service screen-locker-service-type
           (screen-locker program
                          (file-append package "/bin/" program)
                          allow-empty-passwords?)))

\f
;;;
;;; Locale service.
;;;

(define-record-type* <localed-configuration>
  localed-configuration make-localed-configuration
  localed-configuration?
  (localed         localed-configuration-localed
                   (default localed))
  (keyboard-layout localed-configuration-keyboard-layout
                   (default #f)))

(define (localed-dbus-service config)
  "Return the 'localed' D-Bus service for @var{config}, a
@code{<localed-configuration>} record."
  (define keyboard-layout
    (localed-configuration-keyboard-layout config))

  ;; The primary purpose of 'localed' is to tell GDM what the "current" Xorg
  ;; keyboard layout is.  If 'localed' is missing, or if it's unable to
  ;; determine the current XKB layout, then GDM forcefully installs its
  ;; default XKB config (US English).  Here we communicate the configured
  ;; layout through environment variables.

  (if keyboard-layout
      (let* ((layout  (keyboard-layout-name keyboard-layout))
             (variant (keyboard-layout-variant keyboard-layout))
             (model   (keyboard-layout-model keyboard-layout))
             (options (keyboard-layout-options keyboard-layout)))
        (list (wrapped-dbus-service
               (localed-configuration-localed config)
               "libexec/localed/localed"
               `(("GUIX_XKB_LAYOUT" ,layout)
                 ,@(if variant
                       `(("GUIX_XKB_VARIANT" ,variant))
                       '())
                 ,@(if model
                       `(("GUIX_XKB_MODEL" ,model))
                       '())
                 ,@(if (null? options)
                       '()
                       `(("GUIX_XKB_OPTIONS"
                          ,(string-join options ","))))))))
      '()))

(define localed-service-type
  (let ((package (lambda (config)
                   ;; Don't bother if the user didn't specify any keyboard
                   ;; layout.
                   (if (localed-configuration-keyboard-layout config)
                       (list (localed-configuration-localed config))
                       '()))))
    (service-type (name 'localed)
                  (extensions
                   (list (service-extension dbus-root-service-type
                                            localed-dbus-service)
                         (service-extension udev-service-type package)
                         (service-extension polkit-service-type package)

                         ;; Add 'localectl' to the profile.
                         (service-extension profile-service-type package)))

                  ;; This service can be extended, typically by the X login
                  ;; manager, to communicate the chosen Xorg keyboard layout.
                  (compose (lambda (extensions)
                             (find keyboard-layout? extensions)))
                  (extend (lambda (config keyboard-layout)
                            (localed-configuration
                             (inherit config)
                             (keyboard-layout keyboard-layout))))
                  (description
                   "Run the locale daemon, @command{localed}, which can be used
to control the system locale and keyboard mapping from user programs such as
the GNOME desktop environment.")
                  (default-value (localed-configuration)))))

\f
;;;
;;; GNOME Desktop Manager.
;;;

(define %gdm-accounts
  (list (user-group (name "gdm") (system? #t))
        (user-account
         (name "gdm")
         (group "gdm")
         (supplementary-groups '("video"))
         (system? #t)
         (comment "GNOME Display Manager user")
         (home-directory "/var/lib/gdm")
         (shell (file-append shadow "/sbin/nologin")))))

(define %gdm-activation
  ;; Ensure /var/lib/gdm is owned by the "gdm" user.  This is normally the
  ;; case but could be wrong if the "gdm" user was created, then removed, and
  ;; then recreated under a different UID/GID: <https://bugs.gnu.org/37423>.
  (with-imported-modules '((guix build utils))
    #~(begin
        (use-modules (guix build utils))

        (let* ((gdm (getpwnam "gdm"))
               (uid (passwd:uid gdm))
               (gid (passwd:gid gdm))
               (st  (stat "/var/lib/gdm" #f)))
          ;; Recurse into /var/lib/gdm only if it has wrong ownership.
          (when (and st
                     (or (not (= uid (stat:uid st)))
                         (not (= gid (stat:gid st)))))
            (for-each (lambda (file)
                        (chown file uid gid))
                      (find-files "/var/lib/gdm"
                                  #:directories? #t)))))))

(define dbus-daemon-wrapper
  (program-file
   "gdm-dbus-wrapper"
   #~(begin
       (use-modules (srfi srfi-26))

       (define system-profile
         "/run/current-system/profile")

       (define user-profile
         (and=> (getpw (getuid))
                (lambda (pw)
                  (string-append (passwd:dir pw) "/.guix-profile"))))

       ;; If we are able to find the user's profile, we can add it to
       ;; the search paths set below.  We need to do this so that D-Bus
       ;; can start services installed by the user.  This allows
       ;; applications that require session D-Bus services (e.g,
       ;; 'evolution') to work even if those services are only available
       ;; in the user's profile.  See <https://bugs.gnu.org/35267>.
       (define profiles
         (if user-profile
             (list user-profile system-profile)
             (list system-profile)))

       (setenv "XDG_CONFIG_DIRS"
               (string-join (map (cut string-append <> "/etc/xdg") profiles)
                            ":"))
       (setenv "XDG_DATA_DIRS"
               (string-join (map (cut string-append <> "/share") profiles)
                            ":"))
       (apply execl (string-append #$dbus "/bin/dbus-daemon")
              (program-arguments)))))

(define-record-type* <gdm-configuration>
  gdm-configuration make-gdm-configuration
  gdm-configuration?
  (gdm gdm-configuration-gdm (default gdm))
  (allow-empty-passwords? gdm-configuration-allow-empty-passwords? (default #t))
  (auto-login? gdm-configuration-auto-login? (default #f))
  (dbus-daemon gdm-configuration-dbus-daemon (default dbus-daemon-wrapper))
  (debug? gdm-configuration-debug? (default #f))
  (default-user gdm-configuration-default-user (default #f))
  (gnome-shell-assets gdm-configuration-gnome-shell-assets
                      (default (list adwaita-icon-theme font-cantarell)))
  (xorg-configuration gdm-configuration-xorg
                      (default (xorg-configuration)))
  (x-session gdm-configuration-x-session
             (default (xinitrc))))

(define (gdm-configuration-file config)
  (mixed-text-file "gdm-custom.conf"
                   "[daemon]\n"
                   "#User=gdm\n"
                   "#Group=gdm\n"
                   (if (gdm-configuration-auto-login? config)
                       (string-append
                        "AutomaticLoginEnable=true\n"
                        "AutomaticLogin="
                        (or (gdm-configuration-default-user config)
                            (error "missing default user for auto-login"))
                        "\n")
                       (string-append
                        "AutomaticLoginEnable=false\n"
                        "#AutomaticLogin=\n"))
                   "#TimedLoginEnable=false\n"
                   "#TimedLogin=\n"
                   "#TimedLoginDelay=0\n"
                   ;; Disable initial system setup inside GDM.
                   ;; Whatever settings are set there should already be
                   ;; taken care of through `guix system'.
                   ;; See also
                   ;; <https://debbugs.gnu.org/cgi/bugreport.cgi?bug=39281>.
                   "InitialSetupEnable=false\n"
                   ;; Enable me once X is working.
                   "WaylandEnable=false\n"
                   "\n"
                   "[debug]\n"
                   "Enable=" (if (gdm-configuration-debug? config)
                                 "true"
                                 "false") "\n"
                   "\n"
                   "[security]\n"
                   "#DisallowTCP=true\n"
                   "#AllowRemoteAutoLogin=false\n"))

(define (gdm-pam-service config)
  "Return a PAM service for @command{gdm}."
  (list
   (pam-service
    (inherit (unix-pam-service "gdm-autologin"
                               #:login-uid? #t))
    (auth (list (pam-entry
                 (control "optional")
                 (module (file-append (gdm-configuration-gdm config)
                                      "/lib/security/pam_gdm.so")))
                (pam-entry
                 (control "sufficient")
                 (module "pam_permit.so")))))
   (pam-service
    (inherit (unix-pam-service "gdm-launch-environment"))
    (auth (list (pam-entry
                 (control "required")
                 (module "pam_permit.so")))))
   (unix-pam-service "gdm-password"
                     #:login-uid? #t
                     #:allow-empty-passwords?
                     (gdm-configuration-allow-empty-passwords? config))))

(define (gdm-shepherd-service config)
  (list (shepherd-service
         (documentation "Xorg display server (GDM)")
         (provision '(xorg-server))
         (requirement '(dbus-system user-processes host-name udev))
         (start #~(lambda ()
                    (fork+exec-command
                     (list #$(file-append (gdm-configuration-gdm config)
                                          "/bin/gdm"))
                     #:environment-variables
                     (list (string-append
                            "GDM_CUSTOM_CONF="
                            #$(gdm-configuration-file config))
                           (string-append
                            "GDM_DBUS_DAEMON="
                            #$(gdm-configuration-dbus-daemon config))
                           (string-append
                            "GDM_X_SERVER="
                            #$(xorg-wrapper
                               (gdm-configuration-xorg config)))
                           (string-append
                            "GDM_X_SESSION="
                            #$(gdm-configuration-x-session config))
                           (string-append
                            "XDG_DATA_DIRS="
                            ((lambda (ls) (string-join ls ":"))
                             (map (lambda (path)
                                    (string-append path "/share"))
                                  ;; XXX: Remove gnome-shell below when GDM
                                  ;; can depend on GNOME Shell directly.
                                  (cons #$gnome-shell
                                        '#$(gdm-configuration-gnome-shell-assets
                                            config)))))))))
         (stop #~(make-kill-destructor))
         (respawn? #t))))

(define gdm-service-type
  (handle-xorg-configuration gdm-configuration
    (service-type (name 'gdm)
                  (extensions
                   (list (service-extension shepherd-root-service-type
                                            gdm-shepherd-service)
                         (service-extension activation-service-type
                                            (const %gdm-activation))
                         (service-extension account-service-type
                                            (const %gdm-accounts))
                         (service-extension pam-root-service-type
                                            gdm-pam-service)
                         (service-extension profile-service-type
                                            gdm-configuration-gnome-shell-assets)
                         (service-extension dbus-root-service-type
                                            (compose list
                                                     gdm-configuration-gdm))
                         (service-extension localed-service-type
                                            (compose
                                             xorg-configuration-keyboard-layout
                                             gdm-configuration-xorg))))
                  (default-value (gdm-configuration))
                  (description
                   "Run the GNOME Desktop Manager (GDM), a program that allows
you to log in in a graphical session, whether or not you use GNOME."))))

(define* (set-xorg-configuration config
                                 #:optional
                                 (login-manager-service-type
                                  gdm-service-type))
  "Tell the log-in manager (of type @var{login-manager-service-type}) to use
@var{config}, an <xorg-configuration> record."
  (simple-service 'set-xorg-configuration
                  login-manager-service-type
                  config))

;;; xorg.scm ends here

debug log:

solving 8ffea3b9dd ...
found 8ffea3b9dd in https://git.savannah.gnu.org/cgit/guix.git

(*) Git path names are given by the tree(s) the blob belongs to.
    Blobs themselves have no identifier aside from the hash of its contents.^

Code repositories for project(s) associated with this public inbox

	https://git.savannah.gnu.org/cgit/guix.git

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).