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f19cf27c MO |
1 | ;;; GNU Guix --- Functional package management for GNU |
2 | ;;; Copyright © 2020 Mathieu Othacehe <m.othacehe@gmail.com> | |
3 | ;;; | |
4 | ;;; This file is part of GNU Guix. | |
5 | ;;; | |
6 | ;;; GNU Guix is free software; you can redistribute it and/or modify it | |
7 | ;;; under the terms of the GNU General Public License as published by | |
8 | ;;; the Free Software Foundation; either version 3 of the License, or (at | |
9 | ;;; your option) any later version. | |
10 | ;;; | |
11 | ;;; GNU Guix is distributed in the hope that it will be useful, but | |
12 | ;;; WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | ;;; GNU General Public License for more details. | |
15 | ;;; | |
16 | ;;; You should have received a copy of the GNU General Public License | |
17 | ;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>. | |
18 | ||
19 | (define-module (gnu system image) | |
20 | #:use-module (guix gexp) | |
21 | #:use-module (guix modules) | |
22 | #:use-module (guix monads) | |
23 | #:use-module (guix records) | |
24 | #:use-module (guix store) | |
25 | #:use-module (guix ui) | |
26 | #:use-module (guix utils) | |
27 | #:use-module ((guix self) #:select (make-config.scm)) | |
28 | #:use-module (gnu bootloader) | |
29 | #:use-module (gnu bootloader grub) | |
30 | #:use-module (gnu image) | |
31 | #:use-module (gnu services) | |
32 | #:use-module (gnu services base) | |
33 | #:use-module (gnu system) | |
34 | #:use-module (gnu system file-systems) | |
35 | #:use-module (gnu system uuid) | |
36 | #:use-module (gnu system vm) | |
37 | #:use-module (guix packages) | |
38 | #:use-module (gnu packages base) | |
39 | #:use-module (gnu packages bootloaders) | |
40 | #:use-module (gnu packages cdrom) | |
41 | #:use-module (gnu packages disk) | |
42 | #:use-module (gnu packages gawk) | |
43 | #:use-module (gnu packages genimage) | |
44 | #:use-module (gnu packages guile) | |
45 | #:autoload (gnu packages gnupg) (guile-gcrypt) | |
46 | #:use-module (gnu packages linux) | |
47 | #:use-module (gnu packages mtools) | |
48 | #:use-module ((srfi srfi-1) #:prefix srfi-1:) | |
49 | #:use-module (srfi srfi-11) | |
50 | #:use-module (srfi srfi-26) | |
51 | #:use-module (srfi srfi-35) | |
52 | #:use-module (rnrs bytevectors) | |
53 | #:use-module (ice-9 match) | |
54 | #:export (esp-partition | |
55 | root-partition | |
56 | ||
57 | efi-disk-image | |
58 | iso9660-image | |
59 | ||
60 | find-image | |
61 | system-image)) | |
62 | ||
63 | \f | |
64 | ;;; | |
65 | ;;; Images definitions. | |
66 | ;;; | |
67 | ||
b7b45372 MO |
68 | ;; This is the offset before the first partition. GRUB will install itself in |
69 | ;; this post-MBR gap. | |
70 | (define root-offset (* 512 2048)) | |
71 | ||
72 | ;; Generic root partition label. | |
73 | (define root-label "Guix_image") | |
74 | ||
f19cf27c MO |
75 | (define esp-partition |
76 | (partition | |
77 | (size (* 40 (expt 2 20))) | |
b7b45372 | 78 | (offset root-offset) |
f19cf27c MO |
79 | (label "GNU-ESP") ;cosmetic only |
80 | ;; Use "vfat" here since this property is used when mounting. The actual | |
81 | ;; FAT-ness is based on file system size (16 in this case). | |
82 | (file-system "vfat") | |
83 | (flags '(esp)) | |
84 | (initializer (gexp initialize-efi-partition)))) | |
85 | ||
86 | (define root-partition | |
87 | (partition | |
88 | (size 'guess) | |
b7b45372 | 89 | (label root-label) |
f19cf27c MO |
90 | (file-system "ext4") |
91 | (flags '(boot)) | |
92 | (initializer (gexp initialize-root-partition)))) | |
93 | ||
94 | (define efi-disk-image | |
95 | (image | |
96 | (format 'disk-image) | |
97 | (partitions (list esp-partition root-partition)))) | |
98 | ||
99 | (define iso9660-image | |
100 | (image | |
101 | (format 'iso9660) | |
102 | (partitions | |
103 | (list (partition | |
104 | (size 'guess) | |
105 | (label "GUIX_IMAGE") | |
106 | (flags '(boot))))) | |
107 | ;; XXX: Temporarily disable compression to speed-up the tests. | |
108 | (compression? #f))) | |
109 | ||
110 | \f | |
111 | ;; | |
112 | ;; Helpers. | |
113 | ;; | |
114 | ||
115 | (define not-config? | |
116 | ;; Select (guix …) and (gnu …) modules, except (guix config). | |
117 | (match-lambda | |
118 | (('guix 'config) #f) | |
119 | (('guix rest ...) #t) | |
120 | (('gnu rest ...) #t) | |
121 | (rest #f))) | |
122 | ||
123 | (define (partition->gexp partition) | |
124 | "Turn PARTITION, a <partition> object, into a list-valued gexp suitable for | |
125 | 'make-partition-image'." | |
126 | #~'(#$@(list (partition-size partition)) | |
127 | #$(partition-file-system partition) | |
bd3716f6 | 128 | #$(partition-file-system-options partition) |
f19cf27c MO |
129 | #$(partition-label partition) |
130 | #$(and=> (partition-uuid partition) | |
131 | uuid-bytevector))) | |
132 | ||
133 | (define gcrypt-sqlite3&co | |
134 | ;; Guile-Gcrypt, Guile-SQLite3, and their propagated inputs. | |
135 | (srfi-1:append-map | |
136 | (lambda (package) | |
137 | (cons package | |
138 | (match (package-transitive-propagated-inputs package) | |
139 | (((labels packages) ...) | |
140 | packages)))) | |
141 | (list guile-gcrypt guile-sqlite3))) | |
142 | ||
143 | (define-syntax-rule (with-imported-modules* gexp* ...) | |
144 | (with-extensions gcrypt-sqlite3&co | |
145 | (with-imported-modules `(,@(source-module-closure | |
146 | '((gnu build vm) | |
147 | (gnu build image) | |
148 | (guix store database)) | |
149 | #:select? not-config?) | |
150 | ((guix config) => ,(make-config.scm))) | |
151 | #~(begin | |
152 | (use-modules (gnu build vm) | |
153 | (gnu build image) | |
154 | (guix store database) | |
155 | (guix build utils)) | |
156 | gexp* ...)))) | |
157 | ||
7feefb3b MO |
158 | (define (root-partition? partition) |
159 | "Return true if PARTITION is the root partition, false otherwise." | |
160 | (member 'boot (partition-flags partition))) | |
161 | ||
162 | (define (find-root-partition image) | |
163 | "Return the root partition of the given IMAGE." | |
164 | (srfi-1:find root-partition? (image-partitions image))) | |
165 | ||
166 | (define (root-partition-index image) | |
167 | "Return the index of the root partition of the given IMAGE." | |
168 | (1+ (srfi-1:list-index root-partition? (image-partitions image)))) | |
169 | ||
f19cf27c MO |
170 | \f |
171 | ;; | |
172 | ;; Disk image. | |
173 | ;; | |
174 | ||
175 | (define* (system-disk-image image | |
176 | #:key | |
177 | (name "disk-image") | |
178 | bootcfg | |
179 | bootloader | |
180 | register-closures? | |
181 | (inputs '())) | |
182 | "Return as a file-like object, the disk-image described by IMAGE. Said | |
183 | image can be copied on a USB stick as is. BOOTLOADER is the bootloader that | |
184 | will be installed and configured according to BOOTCFG parameter. | |
185 | ||
186 | Raw images of the IMAGE partitions are first created. Then, genimage is used | |
187 | to assemble the partition images into a disk-image without resorting to a | |
188 | virtual machine. | |
189 | ||
190 | INPUTS is a list of inputs (as for packages). When REGISTER-CLOSURES? is | |
191 | true, register INPUTS in the store database of the image so that Guix can be | |
192 | used in the image." | |
193 | ||
194 | (define genimage-name "image") | |
195 | ||
196 | (define (image->genimage-cfg image) | |
197 | ;; Return as a file-like object, the genimage configuration file | |
198 | ;; describing the given IMAGE. | |
199 | (define (format->image-type format) | |
200 | ;; Return the genimage format corresponding to FORMAT. For now, only | |
201 | ;; the hdimage format (raw disk-image) is supported. | |
202 | (case format | |
203 | ((disk-image) "hdimage") | |
204 | (else | |
205 | (raise (condition | |
206 | (&message | |
207 | (message | |
208 | (format #f (G_ "Unsupported image type ~a~%.") format)))))))) | |
209 | ||
210 | (define (partition->dos-type partition) | |
211 | ;; Return the MBR partition type corresponding to the given PARTITION. | |
212 | ;; See: https://en.wikipedia.org/wiki/Partition_type. | |
213 | (let ((flags (partition-flags partition))) | |
214 | (cond | |
215 | ((member 'esp flags) "0xEF") | |
216 | (else "0x83")))) | |
217 | ||
218 | (define (partition-image partition) | |
219 | ;; Return as a file-like object, an image of the given PARTITION. A | |
220 | ;; directory, filled by calling the PARTITION initializer procedure, is | |
221 | ;; first created within the store. Then, an image of this directory is | |
222 | ;; created using tools such as 'mke2fs' or 'mkdosfs', depending on the | |
223 | ;; partition file-system type. | |
224 | (let* ((os (image-operating-system image)) | |
225 | (schema (local-file (search-path %load-path | |
226 | "guix/store/schema.sql"))) | |
227 | (graph (match inputs | |
228 | (((names . _) ...) | |
229 | names))) | |
230 | (root-builder | |
231 | (with-imported-modules* | |
232 | (let* ((initializer #$(partition-initializer partition))) | |
233 | (sql-schema #$schema) | |
234 | ||
235 | ;; Allow non-ASCII file names--e.g., 'nss-certs'--to be | |
236 | ;; decoded. | |
237 | (setenv "GUIX_LOCPATH" | |
238 | #+(file-append glibc-utf8-locales "/lib/locale")) | |
239 | (setlocale LC_ALL "en_US.utf8") | |
240 | ||
241 | (initializer #$output | |
242 | #:references-graphs '#$graph | |
243 | #:deduplicate? #f | |
244 | #:system-directory #$os | |
05f37c16 | 245 | #:grub-efi #+grub-efi |
f19cf27c | 246 | #:bootloader-package |
9c1adb24 MO |
247 | #+(bootloader-package bootloader) |
248 | #:bootloader-installer | |
249 | #+(bootloader-installer bootloader) | |
f19cf27c MO |
250 | #:bootcfg #$bootcfg |
251 | #:bootcfg-location | |
252 | #$(bootloader-configuration-file bootloader))))) | |
253 | (image-root | |
254 | (computed-file "partition-image-root" root-builder | |
255 | #:options `(#:references-graphs ,inputs))) | |
256 | (type (partition-file-system partition)) | |
257 | (image-builder | |
258 | (with-imported-modules* | |
1dbd0005 | 259 | (let ((inputs '#+(list e2fsprogs dosfstools mtools))) |
f19cf27c MO |
260 | (set-path-environment-variable "PATH" '("bin" "sbin") inputs) |
261 | (make-partition-image #$(partition->gexp partition) | |
262 | #$output | |
263 | #$image-root))))) | |
264 | (computed-file "partition.img" image-builder))) | |
265 | ||
266 | (define (partition->config partition) | |
267 | ;; Return the genimage partition configuration for PARTITION. | |
268 | (let ((label (partition-label partition)) | |
269 | (dos-type (partition->dos-type partition)) | |
1b4fa785 MO |
270 | (image (partition-image partition)) |
271 | (offset (partition-offset partition))) | |
f19cf27c | 272 | #~(format #f "~/partition ~a { |
7d4ecda6 MO |
273 | ~/~/partition-type = ~a |
274 | ~/~/image = \"~a\" | |
275 | ~/~/offset = \"~a\" | |
276 | ~/}" | |
1b4fa785 MO |
277 | #$label |
278 | #$dos-type | |
279 | #$image | |
1dd7b87f | 280 | #$offset))) |
f19cf27c MO |
281 | |
282 | (let* ((format (image-format image)) | |
283 | (image-type (format->image-type format)) | |
284 | (partitions (image-partitions image)) | |
285 | (partitions-config (map partition->config partitions)) | |
286 | (builder | |
287 | #~(begin | |
288 | (let ((format (@ (ice-9 format) format))) | |
289 | (call-with-output-file #$output | |
290 | (lambda (port) | |
291 | (format port | |
292 | "\ | |
293 | image ~a { | |
294 | ~/~a {} | |
295 | ~{~a~^~%~} | |
296 | }~%" #$genimage-name #$image-type (list #$@partitions-config)))))))) | |
297 | (computed-file "genimage.cfg" builder))) | |
298 | ||
299 | (let* ((substitutable? (image-substitutable? image)) | |
300 | (builder | |
301 | (with-imported-modules* | |
7feefb3b MO |
302 | (let ((inputs '#+(list genimage coreutils findutils)) |
303 | (bootloader-installer | |
304 | #+(bootloader-disk-image-installer bootloader))) | |
f19cf27c | 305 | (set-path-environment-variable "PATH" '("bin" "sbin") inputs) |
7feefb3b MO |
306 | (genimage #$(image->genimage-cfg image) #$output) |
307 | ;; Install the bootloader directly on the disk-image. | |
308 | (when bootloader-installer | |
309 | (bootloader-installer | |
310 | #+(bootloader-package bootloader) | |
311 | #$(root-partition-index image) | |
312 | (string-append #$output "/" #$genimage-name)))))) | |
f19cf27c MO |
313 | (image-dir (computed-file "image-dir" builder))) |
314 | (computed-file name | |
315 | #~(symlink | |
316 | (string-append #$image-dir "/" #$genimage-name) | |
317 | #$output) | |
318 | #:options `(#:substitutable? ,substitutable?)))) | |
319 | ||
320 | \f | |
321 | ;; | |
322 | ;; ISO9660 image. | |
323 | ;; | |
324 | ||
325 | (define (has-guix-service-type? os) | |
326 | "Return true if OS contains a service of the type GUIX-SERVICE-TYPE." | |
327 | (not (not (srfi-1:find (lambda (service) | |
328 | (eq? (service-kind service) guix-service-type)) | |
329 | (operating-system-services os))))) | |
330 | ||
331 | (define* (system-iso9660-image image | |
332 | #:key | |
333 | (name "iso9660-image") | |
334 | bootcfg | |
335 | bootloader | |
336 | register-closures? | |
337 | (inputs '()) | |
338 | (grub-mkrescue-environment '())) | |
339 | "Return as a file-like object a bootable, stand-alone iso9660 image. | |
340 | ||
341 | INPUTS is a list of inputs (as for packages). When REGISTER-CLOSURES? is | |
342 | true, register INPUTS in the store database of the image so that Guix can be | |
343 | used in the image. " | |
344 | (define root-label | |
345 | (match (image-partitions image) | |
346 | ((partition) | |
347 | (partition-label partition)))) | |
348 | ||
349 | (define root-uuid | |
350 | (match (image-partitions image) | |
351 | ((partition) | |
352 | (uuid-bytevector (partition-uuid partition))))) | |
353 | ||
354 | (let* ((os (image-operating-system image)) | |
355 | (bootloader (bootloader-package bootloader)) | |
356 | (compression? (image-compression? image)) | |
357 | (substitutable? (image-substitutable? image)) | |
358 | (schema (local-file (search-path %load-path | |
359 | "guix/store/schema.sql"))) | |
360 | (graph (match inputs | |
361 | (((names . _) ...) | |
362 | names))) | |
363 | (root-builder | |
364 | (with-imported-modules* | |
365 | (sql-schema #$schema) | |
366 | ||
367 | ;; Allow non-ASCII file names--e.g., 'nss-certs'--to be decoded. | |
368 | (setenv "GUIX_LOCPATH" | |
369 | #+(file-append glibc-utf8-locales "/lib/locale")) | |
370 | (setlocale LC_ALL "en_US.utf8") | |
371 | ||
372 | (initialize-root-partition #$output | |
373 | #:references-graphs '#$graph | |
374 | #:deduplicate? #f | |
375 | #:system-directory #$os))) | |
376 | (image-root | |
377 | (computed-file "image-root" root-builder | |
378 | #:options `(#:references-graphs ,inputs))) | |
379 | (builder | |
380 | (with-imported-modules* | |
381 | (let* ((inputs '#$(list parted e2fsprogs dosfstools xorriso | |
382 | sed grep coreutils findutils gawk))) | |
383 | (set-path-environment-variable "PATH" '("bin" "sbin") inputs) | |
384 | (make-iso9660-image #$xorriso | |
385 | '#$grub-mkrescue-environment | |
386 | #$bootloader | |
387 | #$bootcfg | |
388 | #$os | |
389 | #$image-root | |
390 | #$output | |
391 | #:references-graphs '#$graph | |
392 | #:register-closures? #$register-closures? | |
393 | #:compression? #$compression? | |
394 | #:volume-id #$root-label | |
395 | #:volume-uuid #$root-uuid))))) | |
396 | (computed-file name builder | |
397 | #:options `(#:references-graphs ,inputs | |
398 | #:substitutable? ,substitutable?)))) | |
399 | ||
400 | \f | |
401 | ;; | |
402 | ;; Image creation. | |
403 | ;; | |
404 | ||
f19cf27c MO |
405 | (define (image->root-file-system image) |
406 | "Return the IMAGE root partition file-system type." | |
407 | (let ((format (image-format image))) | |
408 | (if (eq? format 'iso9660) | |
409 | "iso9660" | |
410 | (partition-file-system (find-root-partition image))))) | |
411 | ||
412 | (define (root-size image) | |
413 | "Return the root partition size of IMAGE." | |
414 | (let* ((image-size (image-size image)) | |
415 | (root-partition (find-root-partition image)) | |
416 | (root-size (partition-size root-partition))) | |
417 | (cond | |
418 | ((and (eq? root-size 'guess) image-size) | |
419 | image-size) | |
420 | (else root-size)))) | |
421 | ||
422 | (define* (image-with-os base-image os) | |
423 | "Return an image based on BASE-IMAGE but with the operating-system field set | |
424 | to OS. Also set the UUID and the size of the root partition." | |
425 | (define root-file-system | |
426 | (srfi-1:find | |
427 | (lambda (fs) | |
428 | (string=? (file-system-mount-point fs) "/")) | |
429 | (operating-system-file-systems os))) | |
430 | ||
74938105 MO |
431 | (image |
432 | (inherit base-image) | |
433 | (operating-system os) | |
434 | (partitions | |
435 | (map (lambda (p) | |
436 | (if (root-partition? p) | |
437 | (partition | |
438 | (inherit p) | |
439 | (uuid (file-system-device root-file-system)) | |
440 | (size (root-size base-image))) | |
441 | p)) | |
442 | (image-partitions base-image))))) | |
f19cf27c MO |
443 | |
444 | (define (operating-system-for-image image) | |
445 | "Return an operating-system based on the one specified in IMAGE, but | |
446 | suitable for image creation. Assign an UUID to the root file-system, so that | |
447 | it can be used for bootloading." | |
448 | (define volatile-root? (image-volatile-root? image)) | |
449 | ||
450 | (define (root-uuid os) | |
451 | ;; UUID of the root file system, computed in a deterministic fashion. | |
452 | ;; This is what we use to locate the root file system so it has to be | |
453 | ;; different from the user's own file system UUIDs. | |
454 | (let ((type (if (eq? (image-format image) 'iso9660) | |
455 | 'iso9660 | |
456 | 'dce))) | |
457 | (operating-system-uuid os type))) | |
458 | ||
459 | (let* ((root-file-system-type (image->root-file-system image)) | |
460 | (base-os (image-operating-system image)) | |
461 | (file-systems-to-keep | |
462 | (srfi-1:remove | |
463 | (lambda (fs) | |
464 | (string=? (file-system-mount-point fs) "/")) | |
465 | (operating-system-file-systems base-os))) | |
466 | (format (image-format image)) | |
467 | (os | |
468 | (operating-system | |
469 | (inherit base-os) | |
470 | (initrd (lambda (file-systems . rest) | |
471 | (apply (operating-system-initrd base-os) | |
472 | file-systems | |
473 | #:volatile-root? volatile-root? | |
474 | rest))) | |
475 | (bootloader (if (eq? format 'iso9660) | |
476 | (bootloader-configuration | |
477 | (inherit | |
478 | (operating-system-bootloader base-os)) | |
479 | (bootloader grub-mkrescue-bootloader)) | |
480 | (operating-system-bootloader base-os))) | |
481 | (file-systems (cons (file-system | |
482 | (mount-point "/") | |
483 | (device "/dev/placeholder") | |
484 | (type root-file-system-type)) | |
485 | file-systems-to-keep)))) | |
486 | (uuid (root-uuid os))) | |
487 | (operating-system | |
488 | (inherit os) | |
489 | (file-systems (cons (file-system | |
490 | (mount-point "/") | |
491 | (device uuid) | |
492 | (type root-file-system-type)) | |
493 | file-systems-to-keep))))) | |
494 | ||
495 | (define* (make-system-image image) | |
496 | "Return the derivation of IMAGE. It can be a raw disk-image or an ISO9660 | |
497 | image, depending on IMAGE format." | |
498 | (define substitutable? (image-substitutable? image)) | |
499 | ||
500 | (let* ((os (operating-system-for-image image)) | |
501 | (image* (image-with-os image os)) | |
502 | (register-closures? (has-guix-service-type? os)) | |
503 | (bootcfg (operating-system-bootcfg os)) | |
504 | (bootloader (bootloader-configuration-bootloader | |
505 | (operating-system-bootloader os)))) | |
506 | (case (image-format image) | |
507 | ((disk-image) | |
508 | (system-disk-image image* | |
509 | #:bootcfg bootcfg | |
510 | #:bootloader bootloader | |
511 | #:register-closures? register-closures? | |
512 | #:inputs `(("system" ,os) | |
513 | ("bootcfg" ,bootcfg)))) | |
514 | ((iso9660) | |
515 | (system-iso9660-image image* | |
516 | #:bootcfg bootcfg | |
517 | #:bootloader bootloader | |
518 | #:register-closures? register-closures? | |
519 | #:inputs `(("system" ,os) | |
520 | ("bootcfg" ,bootcfg)) | |
521 | #:grub-mkrescue-environment | |
522 | '(("MKRESCUE_SED_MODE" . "mbr_hfs"))))))) | |
523 | ||
524 | (define (find-image file-system-type) | |
525 | "Find and return an image that could match the given FILE-SYSTEM-TYPE. This | |
526 | is useful to adapt to interfaces written before the addition of the <image> | |
527 | record." | |
528 | ;; XXX: Add support for system and target here, or in the caller. | |
529 | (match file-system-type | |
530 | ("iso9660" iso9660-image) | |
531 | (_ efi-disk-image))) | |
532 | ||
533 | (define (system-image image) | |
534 | "Wrap 'make-system-image' call, so that it is used only if the given IMAGE | |
535 | is supported. Otherwise, fallback to image creation in a VM. This is | |
536 | temporary and should be removed once 'make-system-image' is able to deal with | |
537 | all types of images." | |
538 | (define substitutable? (image-substitutable? image)) | |
539 | (define volatile-root? (image-volatile-root? image)) | |
540 | ||
541 | (let* ((image-os (image-operating-system image)) | |
542 | (image-root-filesystem-type (image->root-file-system image)) | |
543 | (bootloader (bootloader-configuration-bootloader | |
544 | (operating-system-bootloader image-os))) | |
545 | (bootloader-name (bootloader-name bootloader)) | |
546 | (size (image-size image)) | |
547 | (format (image-format image))) | |
548 | (mbegin %store-monad | |
549 | (if (and (or (eq? bootloader-name 'grub) | |
550 | (eq? bootloader-name 'extlinux)) | |
551 | (eq? format 'disk-image)) | |
552 | ;; Fallback to image creation in a VM when it is not yet supported | |
553 | ;; by this module. | |
554 | (system-disk-image-in-vm image-os | |
555 | #:disk-image-size size | |
556 | #:file-system-type image-root-filesystem-type | |
557 | #:volatile? volatile-root? | |
558 | #:substitutable? substitutable?) | |
559 | (lower-object | |
560 | (make-system-image image)))))) | |
561 | ||
562 | ;;; image.scm ends here |