summaryrefslogtreecommitdiff
path: root/gnu/system/vm.scm
blob: db055fa5fc62cd1f045e374c8baf5070779bdb3b (about) (plain)
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
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2013 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 system vm)
  #:use-module (guix config)
  #:use-module (guix store)
  #:use-module (guix derivations)
  #:use-module (guix packages)
  #:use-module (guix monads)
  #:use-module ((gnu packages base)
                #:select (%final-inputs
                          guile-final gcc-final glibc-final
                          coreutils findutils grep sed))
  #:use-module (gnu packages guile)
  #:use-module (gnu packages bash)
  #:use-module (gnu packages qemu)
  #:use-module (gnu packages parted)
  #:use-module (gnu packages zile)
  #:use-module (gnu packages grub)
  #:use-module (gnu packages linux)
  #:use-module (gnu packages linux-initrd)
  #:use-module (gnu packages package-management)
  #:use-module ((gnu packages make-bootstrap)
                #:select (%guile-static-stripped))
  #:use-module (gnu packages system)

  #:use-module (gnu system shadow)
  #:use-module (gnu system linux)
  #:use-module (gnu system grub)
  #:use-module (gnu system dmd)

  #:use-module (srfi srfi-1)
  #:use-module (srfi srfi-26)
  #:use-module (ice-9 match)

  #:export (expression->derivation-in-linux-vm
            qemu-image
            system-qemu-image))


;;; Commentary:
;;;
;;; Tools to evaluate build expressions within virtual machines.
;;;
;;; Code:

(define* (expression->derivation-in-linux-vm name exp
                                             #:key
                                             (system (%current-system))
                                             (inputs '())
                                             (linux linux-libre)
                                             (initrd qemu-initrd)
                                             (qemu qemu/smb-shares)
                                             (env-vars '())
                                             (modules '())
                                             (guile-for-build
                                              (%guile-for-build))

                                             (make-disk-image? #f)
                                             (references-graphs #f)
                                             (disk-image-size
                                              (* 100 (expt 2 20))))
  "Evaluate EXP in a QEMU virtual machine running LINUX with INITRD.  In the
virtual machine, EXP has access to all of INPUTS from the store; it should put
its output files in the `/xchg' directory, which is copied to the derivation's
output when the VM terminates.

When MAKE-DISK-IMAGE? is true, then create a QEMU disk image of
DISK-IMAGE-SIZE bytes and return it.

When REFERENCES-GRAPHS is true, it must be a list of file name/store path
pairs, as for `derivation'.  The files containing the reference graphs are
made available under the /xchg CIFS share."
  ;; FIXME: Allow use of macros from other modules, as done in
  ;; `build-expression->derivation'.

  (define input-alist
    (with-monad %store-monad
      (map (match-lambda
            ((input (? package? package))
             (mlet %store-monad ((out (package-file package #:system system)))
               (return `(,input . ,out))))
            ((input (? package? package) sub-drv)
             (mlet %store-monad ((out (package-file package
                                                    #:output sub-drv
                                                    #:system system)))
               (return `(,input . ,out))))
            ((input (? derivation? drv))
             (return `(,input . ,(derivation->output-path drv))))
            ((input (? derivation? drv) sub-drv)
             (return `(,input . ,(derivation->output-path drv sub-drv))))
            ((input (and (? string?) (? store-path?) file))
             (return `(,input . ,file))))
           inputs)))

  (define builder
    ;; Code that launches the VM that evaluates EXP.
    `(let ()
       (use-modules (guix build utils)
                    (srfi srfi-1)
                    (ice-9 rdelim))

       (let ((out     (assoc-ref %outputs "out"))
             (cu      (string-append (assoc-ref %build-inputs "coreutils")
                                     "/bin"))
             (qemu    (string-append (assoc-ref %build-inputs "qemu")
                                     "/bin/qemu-system-"
                                     (car (string-split ,system #\-))))
             (img     (string-append (assoc-ref %build-inputs "qemu")
                                     "/bin/qemu-img"))
             (linux   (string-append (assoc-ref %build-inputs "linux")
                                     "/bzImage"))
             (initrd  (string-append (assoc-ref %build-inputs "initrd")
                                     "/initrd"))
             (builder (assoc-ref %build-inputs "builder")))

         ;; XXX: QEMU uses "rm -rf" when it's done to remove the temporary SMB
         ;; directory, so it really needs `rm' in $PATH.
         (setenv "PATH" cu)

         ,(if make-disk-image?
              `(zero? (system* img "create" "image.qcow2"
                               ,(number->string disk-image-size)))
              '(begin))

         (mkdir "xchg")

         ;; Copy the reference-graph files under xchg/ so EXP can access it.
         (begin
           ,@(match references-graphs
               (((graph-files . _) ...)
                (map (lambda (file)
                       `(copy-file ,file
                                   ,(string-append "xchg/" file)))
                     graph-files))
               (#f '())))

         (and (zero?
               (system* qemu "-nographic" "-no-reboot"
                        "-net" "nic,model=e1000"
                        "-net" (string-append "user,smb=" (getcwd))
                        "-kernel" linux
                        "-initrd" initrd
                        "-append" (string-append "console=ttyS0 --load="
                                                 builder)
                        ,@(if make-disk-image?
                              '("-hda" "image.qcow2")
                              '())))
              ,(if make-disk-image?
                   '(copy-file "image.qcow2"      ; XXX: who mkdir'd OUT?
                               out)
                   '(begin
                      (mkdir out)
                      (copy-recursively "xchg" out)))))))


  (define (lower-inputs inputs)
    ;; Turn any package in INPUTS into a derivation.
    (with-monad %store-monad
      (sequence %store-monad
                (map (match-lambda
                      ((name (? package? package) sub-drv ...)
                       (mlet %store-monad ((drv (package->derivation package)))
                         (return `(,name ,drv ,@sub-drv))))
                      ((name (? string? file))
                       (return `(,name ,file)))
                      (tuple
                       (return tuple)))
                     inputs))))

  (mlet* %store-monad
      ((input-alist  (sequence %store-monad input-alist))
       (exp* ->      `(let ((%build-inputs ',input-alist))
                        ,exp))
       (user-builder (text-file "builder-in-linux-vm"
                                (object->string exp*)))
       (coreutils -> (car (assoc-ref %final-inputs "coreutils")))
       (inputs       (lower-inputs `(("qemu" ,qemu)
                                     ("linux" ,linux)
                                     ("initrd" ,initrd)
                                     ("coreutils" ,coreutils)
                                     ("builder" ,user-builder)
                                     ,@inputs))))
    (derivation-expression name system builder inputs
                           #:env-vars env-vars
                           #:modules (delete-duplicates
                                      `((guix build utils)
                                        ,@modules))
                           #:guile-for-build guile-for-build
                           #:references-graphs references-graphs)))

(define* (qemu-image #:key
                     (name "qemu-image")
                     (system (%current-system))
                     (disk-image-size (* 100 (expt 2 20)))
                     grub-configuration
                     (initialize-store? #f)
                     (populate #f)
                     (inputs '())
                     (inputs-to-copy '()))
  "Return a bootable, stand-alone QEMU image.  The returned image is a full
disk image, with a GRUB installation that uses GRUB-CONFIGURATION as its
configuration file.

INPUTS-TO-COPY is a list of inputs (as for packages) whose closure is copied
into the image being built.  When INITIALIZE-STORE? is true, initialize the
store database in the image so that Guix can be used in the image.

POPULATE is a list of directives stating directories or symlinks to be created
in the disk image partition.  It is evaluated once the image has been
populated with INPUTS-TO-COPY.  It can be used to provide additional files,
such as /etc files."
  (define (input->name+derivation tuple)
    (with-monad %store-monad
      (match tuple
        ((name (? package? package))
         (mlet %store-monad ((drv (package->derivation package system)))
           (return `(,name . ,(derivation->output-path drv)))))
        ((name (? package? package) sub-drv)
         (mlet %store-monad ((drv (package->derivation package system)))
           (return `(,name . ,(derivation->output-path drv sub-drv)))))
        ((name (? derivation? drv))
         (return `(,name . ,(derivation->output-path drv))))
        ((name (? derivation? drv) sub-drv)
         (return `(,name . ,(derivation->output-path drv sub-drv))))
        ((input (and (? string?) (? store-path?) file))
         (return `(,input . ,file))))))

  (mlet %store-monad
      ((graph (sequence %store-monad
                        (map input->name+derivation inputs-to-copy))))
   (expression->derivation-in-linux-vm
    "qemu-image"
    `(let ()
       (use-modules (ice-9 rdelim)
                    (srfi srfi-1)
                    (guix build utils)
                    (guix build linux-initrd))

       (let ((parted  (string-append (assoc-ref %build-inputs "parted")
                                     "/sbin/parted"))
             (mkfs    (string-append (assoc-ref %build-inputs "e2fsprogs")
                                     "/sbin/mkfs.ext3"))
             (grub    (string-append (assoc-ref %build-inputs "grub")
                                     "/sbin/grub-install"))
             (umount  (string-append (assoc-ref %build-inputs "util-linux")
                                     "/bin/umount")) ; XXX: add to Guile
             (grub.cfg (assoc-ref %build-inputs "grub.cfg")))

         (define (read-reference-graph port)
           ;; Return a list of store paths from the reference graph at PORT.
           ;; The data at PORT is the format produced by #:references-graphs.
           (let loop ((line   (read-line port))
                      (result '()))
             (cond ((eof-object? line)
                    (delete-duplicates result))
                   ((string-prefix? "/" line)
                    (loop (read-line port)
                          (cons line result)))
                   (else
                    (loop (read-line port)
                          result)))))

         (define (things-to-copy)
           ;; Return the list of store files to copy to the image.
           (define (graph-from-file file)
             (call-with-input-file file
               read-reference-graph))

           ,(match inputs-to-copy
              (((graph-files . _) ...)
               `(let* ((graph-files ',(map (cut string-append "/xchg/" <>)
                                           graph-files))
                       (paths       (append-map graph-from-file graph-files)))
                  (delete-duplicates paths)))
              (#f ''())))

         ;; GRUB is full of shell scripts.
         (setenv "PATH"
                 (string-append (dirname grub) ":"
                                (assoc-ref %build-inputs "coreutils") "/bin:"
                                (assoc-ref %build-inputs "findutils") "/bin:"
                                (assoc-ref %build-inputs "sed") "/bin:"
                                (assoc-ref %build-inputs "grep") "/bin:"
                                (assoc-ref %build-inputs "gawk") "/bin"))

         (display "creating partition table...\n")
         (and (zero? (system* parted "/dev/vda" "mklabel" "msdos"
                              "mkpart" "primary" "ext2" "1MiB"
                              ,(format #f "~aB"
                                       (- disk-image-size
                                          (* 5 (expt 2 20))))))
              (begin
                (display "creating ext3 partition...\n")
                (and (zero? (system* mkfs "-F" "/dev/vda1"))
                     (let ((store (string-append "/fs" ,%store-directory)))
                       (display "mounting partition...\n")
                       (mkdir "/fs")
                       (mount "/dev/vda1" "/fs" "ext3")
                       (mkdir-p "/fs/boot/grub")
                       (symlink grub.cfg "/fs/boot/grub/grub.cfg")

                       ;; Populate the image's store.
                       (mkdir-p store)
                       (chmod store #o1775)
                       (for-each (lambda (thing)
                                   (copy-recursively thing
                                                     (string-append "/fs"
                                                                    thing)))
                                 (cons grub.cfg (things-to-copy)))

                       ;; Populate /dev.
                       (make-essential-device-nodes #:root "/fs")

                       ;; Optionally, register the inputs in the image's store.
                       (let* ((guix     (assoc-ref %build-inputs "guix"))
                              (register (string-append guix
                                                       "/sbin/guix-register")))
                         ,@(if initialize-store?
                               (match inputs-to-copy
                                 (((graph-files . _) ...)
                                  (map (lambda (closure)
                                         `(system* register "--prefix" "/fs"
                                                   ,(string-append "/xchg/"
                                                                   closure)))
                                       graph-files)))
                               '(#f)))

                       ;; Evaluate the POPULATE directives.
                       ,@(let loop ((directives populate)
                                    (statements '()))
                           (match directives
                             (()
                              (reverse statements))
                             ((('directory name) rest ...)
                              (loop rest
                                    (cons `(mkdir-p ,(string-append "/fs" name))
                                          statements)))
                             ((('directory name uid gid) rest ...)
                              (let ((dir (string-append "/fs" name)))
                                (loop rest
                                      (cons* `(chown ,dir ,uid ,gid)
                                             `(mkdir-p ,dir)
                                             statements))))
                             (((new '-> old) rest ...)
                              (loop rest
                                    (cons `(symlink ,old
                                                    ,(string-append "/fs" new))
                                          statements)))))

                       (and=> (assoc-ref %build-inputs "populate")
                              (lambda (populate)
                                (chdir "/fs")
                                (primitive-load populate)
                                (chdir "/")))

                       (display "clearing file timestamps...\n")
                       (for-each (lambda (file)
                                   (let ((s (lstat file)))
                                     ;; XXX: Guile uses libc's 'utime' function
                                     ;; (not 'futime'), so the timestamp of
                                     ;; symlinks cannot be changed, and there
                                     ;; are symlinks here pointing to
                                     ;; /nix/store, which is the host,
                                     ;; read-only store.
                                     (unless (eq? (stat:type s) 'symlink)
                                       (utime file 0 0 0 0))))
                                 (find-files "/fs" ".*"))

                       (and (zero?
                             (system* grub "--no-floppy"
                                      "--boot-directory" "/fs/boot"
                                      "/dev/vda"))
                            (zero? (system* umount "/fs"))
                            (reboot))))))))
    #:system system
    #:inputs `(("parted" ,parted)
               ("grub" ,grub)
               ("e2fsprogs" ,e2fsprogs)
               ("grub.cfg" ,grub-configuration)

               ;; For shell scripts.
               ("sed" ,(car (assoc-ref %final-inputs "sed")))
               ("grep" ,(car (assoc-ref %final-inputs "grep")))
               ("coreutils" ,(car (assoc-ref %final-inputs "coreutils")))
               ("findutils" ,(car (assoc-ref %final-inputs "findutils")))
               ("gawk" ,(car (assoc-ref %final-inputs "gawk")))
               ("util-linux" ,util-linux)

               ,@(if initialize-store?
                     `(("guix" ,guix))
                     '())

               ,@inputs-to-copy)
    #:make-disk-image? #t
    #:disk-image-size disk-image-size
    #:references-graphs graph
    #:modules '((guix build utils)
                (guix build linux-initrd)))))


;;;
;;; Stand-alone VM image.
;;;

(define* (union inputs
                #:key (guile (%guile-for-build)) (system (%current-system))
                (name "union"))
  "Return a derivation that builds the union of INPUTS.  INPUTS is a list of
input tuples."
  (define builder
    '(begin
       (use-modules (guix build union))

       (setvbuf (current-output-port) _IOLBF)
       (setvbuf (current-error-port) _IOLBF)

       (let ((output (assoc-ref %outputs "out"))
             (inputs (map cdr %build-inputs)))
         (format #t "building union `~a' with ~a packages...~%"
                 output (length inputs))
         (union-build output inputs))))

  (mlet %store-monad
      ((inputs (sequence %store-monad
                         (map (match-lambda
                               ((name (? package? p))
                                (mlet %store-monad
                                    ((drv (package->derivation p system)))
                                  (return `(,name ,drv))))
                               ((name (? package? p) output)
                                (mlet %store-monad
                                    ((drv (package->derivation p system)))
                                  (return `(,name ,drv ,output))))
                               (x
                                (return x)))
                              inputs))))
    (derivation-expression name system builder
                           inputs
                           #:modules '((guix build union))
                           #:guile-for-build guile)))

(define (system-qemu-image)
  "Return the derivation of a QEMU image of the GNU system."
  (define build-user-gid 30000)

  (mlet* %store-monad
      ((motd (text-file "motd" "
Happy birthday, GNU!                                http://www.gnu.org/gnu30

"))

       (%pam-services ->
                      ;; Services known to PAM.
                      (list %pam-other-services
                            (unix-pam-service "login"
                                              #:allow-empty-passwords? #t
                                              #:motd motd)))

       (services (listm %store-monad
                        (host-name-service "gnu")
                        (mingetty-service "tty1")
                        (mingetty-service "tty2")
                        (mingetty-service "tty3")
                        (mingetty-service "tty4")
                        (mingetty-service "tty5")
                        (mingetty-service "tty6")
                        (syslog-service)
                        (guix-service)
                        (nscd-service)

                        ;; QEMU networking settings.
                        (static-networking-service "eth0" "10.0.2.10"
                                                   #:gateway "10.0.2.2")))

       (build-accounts (guix-build-accounts 10 #:gid build-user-gid))

       (resolv.conf
        ;; Name resolution for default QEMU settings.
        (text-file "resolv.conf" "nameserver 10.0.2.3\n"))

       (etc-services  (package-file net-base "etc/services"))
       (etc-protocols (package-file net-base "etc/protocols"))
       (etc-rpc       (package-file net-base "etc/rpc"))

       (bash-file (package-file bash "bin/bash"))
       (dmd-file  (package-file dmd "bin/dmd"))
       (dmd-conf  (dmd-configuration-file services))
       (accounts -> (cons* (user-account
                            (name "root")
                            (password "")
                            (uid 0) (gid 0)
                            (comment "System administrator")
                            (home-directory "/")
                            (shell bash-file))
                           (user-account
                            (name "guest")
                            (password "")
                            (uid 1000) (gid 100)
                            (comment "Guest of GNU")
                            (home-directory "/home/guest")
                            (shell bash-file))
                           build-accounts))
       (passwd    (passwd-file accounts))
       (shadow    (passwd-file accounts #:shadow? #t))
       (group     (group-file (list (user-group
                                     (name "root")
                                     (id 0))
                                    (user-group
                                     (name "users")
                                     (id 100)
                                     (members '("guest")))
                                    (user-group
                                     (name "guixbuild")
                                     (id build-user-gid)
                                     (members (map user-account-name
                                                   build-accounts))))))
       (pam.d-drv (pam-services->directory %pam-services))
       (pam.d ->  (derivation->output-path pam.d-drv))

       (packages -> `(("coreutils" ,coreutils)
                      ("bash" ,bash)
                      ("guile" ,guile-2.0)
                      ("dmd" ,dmd)
                      ("gcc" ,gcc-final)
                      ("libc" ,glibc-final)
                      ("inetutils" ,inetutils)
                      ("findutils" ,findutils)
                      ("grep" ,grep)
                      ("sed" ,sed)
                      ("procps" ,procps)
                      ("psmisc" ,psmisc)
                      ("zile" ,zile)
                      ("guix" ,guix)))

       ;; TODO: Replace with a real profile with a manifest.
       ;; TODO: Generate bashrc from packages' search-paths.
       (profile-drv (union packages
                           #:name "default-profile"))
       (profile ->  (derivation->output-path profile-drv))
       (bashrc   (text-file "bashrc" (string-append "
export PS1='\\u@\\h\\$ '
export PATH=$HOME/.guix-profile/bin:" profile "/bin:" profile "/sbin
export CPATH=$HOME/.guix-profile/include:" profile "/include
export LIBRARY_PATH=$HOME/.guix-profile/lib:" profile "/lib
alias ls='ls -p --color'
alias ll='ls -l'
")))

       (issue    (text-file "issue" "
This is an alpha preview of the GNU system.  Welcome.

This image features the GNU Guix package manager, which was used to
build it (http://www.gnu.org/software/guix/).  The init system is
GNU dmd (http://www.gnu.org/software/dmd/).

You can log in as 'guest' or 'root' with no password.
"))

       (populate -> `((directory "/nix/store" 0 ,build-user-gid)
                      (directory "/etc")
                      (directory "/var/log")      ; for dmd
                      (directory "/var/run/nscd")
                      ("/etc/shadow" -> ,shadow)
                      ("/etc/passwd" -> ,passwd)
                      ("/etc/group" -> ,group)
                      ("/etc/login.defs" -> "/dev/null")
                      ("/etc/pam.d" -> ,pam.d)
                      ("/etc/resolv.conf" -> ,resolv.conf)
                      ("/etc/profile" -> ,bashrc)
                      ("/etc/issue" -> ,issue)
                      ("/etc/services" -> ,etc-services)
                      ("/etc/protocols" -> ,etc-protocols)
                      ("/etc/rpc" -> ,etc-rpc)
                      (directory "/var/nix/gcroots")
                      ("/var/nix/gcroots/default-profile" -> ,profile)
                      (directory "/tmp")
                      (directory "/var/nix/profiles/per-user/root" 0 0)
                      (directory "/var/nix/profiles/per-user/guest"
                                 1000 100)
                      (directory "/home/guest" 1000 100)))
       (boot     (text-file "boot" (object->string
                                    `(execl ,dmd-file "dmd"
                                            "--config" ,dmd-conf))))
       (entries -> (list (return (menu-entry
                                  (label (string-append
                                          "GNU system with Linux-Libre "
                                          (package-version linux-libre)
                                          " (technology preview)"))
                                  (linux linux-libre)
                                  (linux-arguments `("--root=/dev/vda1"
                                                     ,(string-append "--load=" boot)))
                                  (initrd gnu-system-initrd)))))
       (grub.cfg (grub-configuration-file entries)))
    (qemu-image  #:grub-configuration grub.cfg
                 #:populate populate
                 #:disk-image-size (* 550 (expt 2 20))
                 #:initialize-store? #t
                 #:inputs-to-copy `(("boot" ,boot)
                                    ("linux" ,linux-libre)
                                    ("initrd" ,gnu-system-initrd)
                                    ("pam.d" ,pam.d-drv)
                                    ("profile" ,profile-drv)

                                    ;; Configuration.
                                    ("dmd.conf" ,dmd-conf)
                                    ("etc-pam.d" ,pam.d-drv)
                                    ("etc-passwd" ,passwd)
                                    ("etc-shadow" ,shadow)
                                    ("etc-group" ,group)
                                    ("etc-resolv.conf" ,resolv.conf)
                                    ("etc-bashrc" ,bashrc)
                                    ("etc-issue" ,issue)
                                    ("etc-motd" ,motd)
                                    ("net-base" ,net-base)
                                    ,@(append-map service-inputs
                                                  services)))))

;;; vm.scm ends here