aboutsummaryrefslogtreecommitdiff
path: root/emacs/guix-info.el
blob: fc1b585414f98996c22eaf0fc045cf11eb80fa67 (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
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
;;; guix-info.el --- Info buffers for displaying entries

;; Copyright © 2014 Alex Kost <alezost@gmail.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 this program.  If not, see <http://www.gnu.org/licenses/>.

;;; Commentary:

;; This file provides a help-like buffer for displaying information
;; about Guix packages and generations.

;;; Code:

(require 'guix-history)
(require 'guix-base)
(require 'guix-utils)

(defgroup guix-info nil
  "General settings for info buffers."
  :prefix "guix-info-"
  :group 'guix)

(defface guix-info-param-title
  '((t :inherit font-lock-type-face))
  "Face used for titles of parameters."
  :group 'guix-info)

(defface guix-info-file-path
  '((t :inherit link))
  "Face used for file paths."
  :group 'guix-info)

(defface guix-info-url
  '((t :inherit link))
  "Face used for URLs."
  :group 'guix-info)

(defface guix-info-time
  '((t :inherit font-lock-constant-face))
  "Face used for timestamps."
  :group 'guix-info)

(defface guix-info-action-button
  '((((type x w32 ns) (class color))
     :box (:line-width 2 :style released-button)
     :background "lightgrey" :foreground "black")
    (t :inherit button))
  "Face used for action buttons."
  :group 'guix-info)

(defface guix-info-action-button-mouse
  '((((type x w32 ns) (class color))
     :box (:line-width 2 :style released-button)
     :background "grey90" :foreground "black")
    (t :inherit highlight))
  "Mouse face used for action buttons."
  :group 'guix-info)

(defcustom guix-info-ignore-empty-vals nil
  "If non-nil, do not display parameters with nil values."
  :type 'boolean
  :group 'guix-info)

(defvar guix-info-param-title-format "%-18s: "
  "String used to format a title of a parameter.
It should be a '%s'-sequence.  After inserting a title formatted
with this string, a value of the parameter is inserted.
This string is used by `guix-info-insert-title-default'.")

(defvar guix-info-multiline-prefix (make-string 20 ?\s)
  "String used to format multi-line parameter values.
If a value occupies more than one line, this string is inserted
in the beginning of each line after the first one.
This string is used by `guix-info-insert-val-default'.")

(defvar guix-info-indent 2
  "Number of spaces used to indent various parts of inserted text.")

(defvar guix-info-fill-column 60
  "Column used for filling (word wrapping) parameters with long lines.
If a value is not multi-line and it occupies more than this
number of characters, it will be split into several lines.")

(defvar guix-info-delimiter "\n\f\n"
  "String used to separate entries.")

(defvar guix-info-insert-methods
  '((package
     (name              guix-package-info-name)
     (version           guix-package-info-version)
     (license           guix-package-info-license)
     (synopsis          guix-package-info-synopsis)
     (description       guix-package-info-insert-description
                        guix-info-insert-title-simple)
     (outputs           guix-package-info-insert-outputs
                        guix-info-insert-title-simple)
     (home-url          guix-info-insert-url)
     (inputs            guix-package-info-insert-inputs)
     (native-inputs     guix-package-info-insert-native-inputs)
     (propagated-inputs guix-package-info-insert-propagated-inputs)
     (location          guix-package-info-insert-location))
    (installed
     (path              guix-package-info-insert-output-path
                        guix-info-insert-title-simple)
     (dependencies      guix-package-info-insert-output-dependencies
                        guix-info-insert-title-simple))
    (output
     (name              guix-package-info-name)
     (version           guix-output-info-insert-version)
     (output            guix-output-info-insert-output)
     (path              guix-package-info-insert-output-path
                        guix-info-insert-title-simple)
     (dependencies      guix-package-info-insert-output-dependencies
                        guix-info-insert-title-simple)
     (license           guix-package-info-license)
     (synopsis          guix-package-info-synopsis)
     (description       guix-package-info-insert-description
                        guix-info-insert-title-simple)
     (home-url          guix-info-insert-url)
     (inputs            guix-package-info-insert-inputs)
     (native-inputs     guix-package-info-insert-native-inputs)
     (propagated-inputs guix-package-info-insert-propagated-inputs)
     (location          guix-package-info-insert-location))
    (generation
     (number            guix-generation-info-insert-number)
     (current           guix-generation-info-insert-current)
     (path              guix-info-insert-file-path)
     (time              guix-info-insert-time)))
  "Methods for inserting parameter values.
Each element of the list should have a form:

  (ENTRY-TYPE . ((PARAM INSERT-VALUE [INSERT-TITLE]) ...))

INSERT-VALUE may be either nil, a face name or a function.  If it
is nil or a face, `guix-info-insert-val-default' function is
called with parameter value and INSERT-VALUE as arguments.  If it
is a function, this function is called with parameter value and
entry info (alist of parameters and their values) as arguments.

INSERT-TITLE may be either nil, a face name or a function.  If it
is nil or a face, `guix-info-insert-title-default' function is
called with parameter title and INSERT-TITLE as arguments.  If it
is a function, this function is called with parameter title as
argument.")

(defvar guix-info-displayed-params
  '((package name version synopsis outputs location home-url
             license inputs native-inputs propagated-inputs description)
    (output name version output synopsis path dependencies location home-url
            license inputs native-inputs propagated-inputs description)
    (installed path dependencies)
    (generation number prev-number current time path))
  "List of displayed entry parameters.
Each element of the list should have a form:

  (ENTRY-TYPE . (PARAM ...))

The order of displayed parameters is the same as in this list.")

(defun guix-info-get-insert-methods (entry-type param)
  "Return list of insert methods for parameter PARAM of ENTRY-TYPE.
See `guix-info-insert-methods' for details."
  (guix-get-key-val guix-info-insert-methods
                    entry-type param))

(defun guix-info-get-displayed-params (entry-type)
  "Return parameters of ENTRY-TYPE that should be displayed."
  (guix-get-key-val guix-info-displayed-params
                    entry-type))

(defun guix-info-get-indent (&optional level)
  "Return `guix-info-indent' \"multiplied\" by LEVEL spaces.
LEVEL is 1 by default."
  (make-string (* guix-info-indent (or level 1)) ?\s))

(defun guix-info-insert-indent (&optional level)
  "Insert `guix-info-indent' spaces LEVEL times (1 by default)."
  (insert (guix-info-get-indent level)))

(defun guix-info-insert-entries (entries entry-type)
  "Display ENTRIES of ENTRY-TYPE in the current info buffer.
ENTRIES should have a form of `guix-entries'."
  (guix-mapinsert (lambda (entry)
                    (guix-info-insert-entry entry entry-type))
                  entries
                  guix-info-delimiter))

(defun guix-info-insert-entry (entry entry-type &optional indent-level)
  "Insert ENTRY of ENTRY-TYPE into the current info buffer.
If INDENT-LEVEL is non-nil, indent displayed information by this
number of `guix-info-indent' spaces."
  (let ((region-beg (point)))
    (mapc (lambda (param)
            (guix-info-insert-param param entry entry-type))
          (guix-info-get-displayed-params entry-type))
    (when indent-level
      (indent-rigidly region-beg (point)
                      (* indent-level guix-info-indent)))))

(defun guix-info-insert-param (param entry entry-type)
  "Insert title and value of a PARAM at point.
ENTRY is alist with parameters and their values.
ENTRY-TYPE is a type of ENTRY."
  (let ((val (guix-get-key-val entry param)))
    (unless (and guix-info-ignore-empty-vals (null val))
      (let* ((title          (guix-get-param-title entry-type param))
             (insert-methods (guix-info-get-insert-methods entry-type param))
             (val-method     (car insert-methods))
             (title-method   (cadr insert-methods)))
        (guix-info-method-funcall title title-method
                                  #'guix-info-insert-title-default)
        (guix-info-method-funcall val val-method
                                  #'guix-info-insert-val-default
                                  entry)
        (insert "\n")))))

(defun guix-info-method-funcall (val method default-fun &rest args)
  "Call METHOD or DEFAULT-FUN.

If METHOD is a function and VAL is non-nil, call this
function by applying it to VAL and ARGS.

If METHOD is a face, propertize inserted VAL with this face."
  (cond ((or (null method)
             (facep method))
         (funcall default-fun val method))
        ((functionp method)
         (apply method val args))
        (t (error "Unknown method '%S'" method))))

(defun guix-info-insert-title-default (title &optional face format)
  "Insert TITLE formatted with `guix-info-param-title-format' at point."
  (guix-format-insert title
                      (or face 'guix-info-param-title)
                      (or format guix-info-param-title-format)))

(defun guix-info-insert-title-simple (title &optional face)
  "Insert TITLE at point."
  (guix-info-insert-title-default title face "%s:"))

(defun guix-info-insert-val-default (val &optional face)
  "Format and insert parameter value VAL at point.

This function is intended to be called after
`guix-info-insert-title-default'.

If VAL is a one-line string longer than `guix-info-fill-column',
split it into several short lines.  See also
`guix-info-multiline-prefix'.

If FACE is non-nil, propertize inserted line(s) with this FACE."
  (guix-split-insert val face
                     guix-info-fill-column
                     (concat "\n" guix-info-multiline-prefix)))

(defun guix-info-insert-val-simple (val &optional face-or-fun)
  "Format and insert parameter value VAL at point.

This function is intended to be called after
`guix-info-insert-title-simple'.

If VAL is a one-line string longer than `guix-info-fill-column',
split it into several short lines and indent each line with
`guix-info-indent' spaces.

If FACE-OR-FUN is a face, propertize inserted line(s) with this FACE.

If FACE-OR-FUN is a function, call it with VAL as argument.  If
VAL is a list, call the function on each element of this list."
  (if (null val)
      (progn (guix-info-insert-indent)
             (guix-format-insert nil))
    (let ((prefix (concat "\n" (guix-info-get-indent))))
      (insert prefix)
      (if (functionp face-or-fun)
          (guix-mapinsert face-or-fun
                          (if (listp val) val (list val))
                          prefix)
        (guix-split-insert val face-or-fun
                           guix-info-fill-column prefix)))))

(defun guix-info-insert-time (seconds &optional _)
  "Insert formatted time string using SECONDS at point."
  (guix-info-insert-val-default (guix-get-time-string seconds)
                                'guix-info-time))


;;; Buttons

(define-button-type 'guix
  'follow-link t)

(define-button-type 'guix-action
  :supertype 'guix
  'face 'guix-info-action-button
  'mouse-face 'guix-info-action-button-mouse)

(define-button-type 'guix-file
  :supertype 'guix
  'face 'guix-info-file-path
  'help-echo "Find file"
  'action (lambda (btn)
            (find-file (button-label btn))))

(define-button-type 'guix-url
  :supertype 'guix
  'face 'guix-info-url
  'help-echo "Browse URL"
  'action (lambda (btn)
            (browse-url (button-label btn))))

(define-button-type 'guix-package-location
  :supertype 'guix
  'face 'guix-package-info-location
  'help-echo "Find location of this package"
  'action (lambda (btn)
            (guix-find-location (button-label btn))))

(define-button-type 'guix-package-name
  :supertype 'guix
  'face 'guix-package-info-name-button
  'help-echo "Describe this package"
  'action (lambda (btn)
            (guix-get-show-entries 'info guix-package-info-type 'name
                                   (button-label btn))))

(defun guix-info-insert-action-button (label action &optional message
                                             &rest properties)
  "Make action button with LABEL and insert it at point.
ACTION is a function called when the button is pressed.  It
should accept button as the argument.
MESSAGE is a button message.
See `insert-text-button' for the meaning of PROPERTIES."
  (apply #'guix-insert-button
         label 'guix-action
         'action action
         'help-echo message
         properties))

(defun guix-info-insert-file-path (path &optional _)
  "Make button from file PATH and insert it at point."
  (guix-insert-button path 'guix-file))

(defun guix-info-insert-url (url &optional _)
  "Make button from URL and insert it at point."
  (guix-insert-button url 'guix-url))


(defvar guix-info-mode-map
  (let ((map (make-sparse-keymap)))
    (set-keymap-parent
     map (make-composed-keymap button-buffer-map
                               special-mode-map))
    map)
  "Parent keymap for info buffers.")

(define-derived-mode guix-info-mode special-mode "Guix-Info"
  "Parent mode for displaying information in info buffers.")


;;; Displaying packages

(guix-define-buffer-type info package
  :required (id installed non-unique))

(defface guix-package-info-name
  '((t :inherit font-lock-keyword-face))
  "Face used for a name of a package."
  :group 'guix-package-info)

(defface guix-package-info-name-button
  '((t :inherit button))
  "Face used for a full name that can be used to describe a package."
  :group 'guix-package-info)

(defface guix-package-info-version
  '((t :inherit font-lock-builtin-face))
  "Face used for a version of a package."
  :group 'guix-package-info)

(defface guix-package-info-synopsis
  '((t :inherit font-lock-doc-face))
  "Face used for a synopsis of a package."
  :group 'guix-package-info)

(defface guix-package-info-description
  '((t))
  "Face used for a description of a package."
  :group 'guix-package-info)

(defface guix-package-info-license
  '((t :inherit font-lock-string-face))
  "Face used for a license of a package."
  :group 'guix-package-info)

(defface guix-package-info-location
  '((t :inherit link))
  "Face used for a location of a package."
  :group 'guix-package-info)

(defface guix-package-info-installed-outputs
  '((default :weight bold)
    (((class color) (min-colors 88) (background light))
     :foreground "ForestGreen")
    (((class color) (min-colors 88) (background dark))
     :foreground "PaleGreen")
    (((class color) (min-colors 8))
     :foreground "green")
    (t :underline t))
  "Face used for installed outputs of a package."
  :group 'guix-package-info)

(defface guix-package-info-uninstalled-outputs
  '((t :weight bold))
  "Face used for uninstalled outputs of a package."
  :group 'guix-package-info)

(defface guix-package-info-obsolete
  '((t :inherit error))
  "Face used if a package is obsolete."
  :group 'guix-package-info)

(defun guix-package-info-insert-description (desc &optional _)
  "Insert description DESC at point."
  (guix-info-insert-val-simple desc 'guix-package-info-description))

(defun guix-package-info-insert-location (location &optional _)
  "Make button from file LOCATION and insert it at point."
  (guix-insert-button location 'guix-package-location))

(defmacro guix-package-info-define-insert-inputs (&optional type)
  "Define a face and a function for inserting package inputs.
TYPE is a type of inputs.
Function name is `guix-package-info-insert-TYPE-inputs'.
Face name is `guix-package-info-TYPE-inputs'."
  (let* ((type-str (symbol-name type))
         (type-name (and type (concat type-str "-")))
         (type-desc (and type (concat type-str " ")))
         (face (intern (concat "guix-package-info-" type-name "inputs")))
         (btn  (intern (concat "guix-package-" type-name "input")))
         (fun  (intern (concat "guix-package-info-insert-" type-name "inputs"))))
    `(progn
       (defface ,face
         '((t :inherit guix-package-info-name-button))
         ,(concat "Face used for " type-desc "inputs of a package.")
         :group 'guix-package-info)

       (define-button-type ',btn
         :supertype 'guix-package-name
         'face ',face)

       (defun ,fun (inputs &optional _)
         ,(concat "Make buttons from " type-desc "INPUTS and insert them at point.")
         (guix-package-info-insert-full-names inputs ',btn)))))

(guix-package-info-define-insert-inputs)
(guix-package-info-define-insert-inputs native)
(guix-package-info-define-insert-inputs propagated)

(defun guix-package-info-insert-full-names (names button-type)
  "Make BUTTON-TYPE buttons from package NAMES and insert them at point.
NAMES is a list of strings."
  (if names
      (guix-info-insert-val-default
       (with-temp-buffer
         (guix-mapinsert (lambda (name)
                           (guix-insert-button name button-type))
                         names
                         guix-list-separator)
         (buffer-substring (point-min) (point-max))))
    (guix-format-insert nil)))


;;; Inserting outputs and installed parameters

(defvar guix-package-info-output-format "%-10s"
  "String used to format output names of the packages.
It should be a '%s'-sequence.  After inserting an output name
formatted with this string, an action button is inserted.")

(defvar guix-package-info-obsolete-string "(This package is obsolete)"
  "String used if a package is obsolete.")

(defun guix-package-info-insert-outputs (outputs entry)
  "Insert OUTPUTS from package ENTRY at point."
  (and (guix-get-key-val entry 'obsolete)
       (guix-package-info-insert-obsolete-text))
  (and (guix-get-key-val entry 'non-unique)
       (guix-get-key-val entry 'installed)
       (guix-package-info-insert-non-unique-text
        (guix-get-full-name entry)))
  (insert "\n")
  (mapc (lambda (output)
          (guix-package-info-insert-output output entry))
        outputs))

(defun guix-package-info-insert-obsolete-text ()
  "Insert a message about obsolete package at point."
  (guix-info-insert-indent)
  (guix-format-insert guix-package-info-obsolete-string
                      'guix-package-info-obsolete))

(defun guix-package-info-insert-non-unique-text (full-name)
  "Insert a message about non-unique package with FULL-NAME at point."
  (insert "\n")
  (guix-info-insert-indent)
  (insert "Installed outputs are displayed for a non-unique ")
  (guix-insert-button full-name 'guix-package-name)
  (insert " package."))

(defun guix-package-info-insert-output (output entry)
  "Insert OUTPUT at point.
Make some fancy text with buttons and additional stuff if the
current OUTPUT is installed (if there is such output in
`installed' parameter of a package ENTRY)."
  (let* ((installed (guix-get-key-val entry 'installed))
         (obsolete  (guix-get-key-val entry 'obsolete))
         (installed-entry (cl-find-if
                           (lambda (entry)
                             (string= (guix-get-key-val entry 'output)
                                      output))
                           installed))
         (action-type (if installed-entry 'delete 'install)))
    (guix-info-insert-indent)
    (guix-format-insert output
                        (if installed-entry
                            'guix-package-info-installed-outputs
                          'guix-package-info-uninstalled-outputs)
                        guix-package-info-output-format)
    (guix-package-info-insert-action-button action-type entry output)
    (when obsolete
      (guix-info-insert-indent)
      (guix-package-info-insert-action-button 'upgrade entry output))
    (insert "\n")
    (when installed-entry
      (guix-info-insert-entry installed-entry 'installed 2))))

(defun guix-package-info-insert-action-button (type entry output)
  "Insert button to process an action on a package OUTPUT at point.
TYPE is one of the following symbols: `install', `delete', `upgrade'.
ENTRY is an alist with package info."
  (let ((type-str (capitalize (symbol-name type)))
        (full-name (guix-get-full-name entry output)))
    (guix-info-insert-action-button
     type-str
     (lambda (btn)
       (guix-process-package-actions
        (list (button-get btn 'action-type)
              (list (button-get btn 'id)
                    (button-get btn 'output)))))
     (concat type-str " '" full-name "'")
     'action-type type
     'id (or (guix-get-key-val entry 'package-id)
             (guix-get-key-val entry 'id))
     'output output)))

(defun guix-package-info-insert-output-path (path &optional _)
  "Insert PATH of the installed output."
  (guix-info-insert-val-simple path #'guix-info-insert-file-path))

(defalias 'guix-package-info-insert-output-dependencies
  'guix-package-info-insert-output-path)


;;; Displaying outputs

(guix-define-buffer-type info output
  :buffer-name "*Guix Package Info*"
  :required (id package-id installed non-unique))

(defun guix-output-info-insert-version (version entry)
  "Insert output VERSION and obsolete text if needed at point."
  (guix-info-insert-val-default version
                                'guix-package-info-version)
  (and (guix-get-key-val entry 'obsolete)
       (guix-package-info-insert-obsolete-text)))

(defun guix-output-info-insert-output (output entry)
  "Insert OUTPUT and action buttons at point."
  (let* ((installed (guix-get-key-val entry 'installed))
         (obsolete  (guix-get-key-val entry 'obsolete))
         (action-type (if installed 'delete 'install)))
    (guix-info-insert-val-default
     output
     (if installed
         'guix-package-info-installed-outputs
       'guix-package-info-uninstalled-outputs))
    (guix-info-insert-indent)
    (guix-package-info-insert-action-button action-type entry output)
    (when obsolete
      (guix-info-insert-indent)
      (guix-package-info-insert-action-button 'upgrade entry output))))


;;; Displaying generations

(guix-define-buffer-type info generation)

(defface guix-generation-info-number
  '((t :inherit font-lock-keyword-face))
  "Face used for a number of a generation."
  :group 'guix-generation-info)

(defface guix-generation-info-current
  '((t :inherit guix-package-info-installed-outputs))
  "Face used if a generation is the current one."
  :group 'guix-generation-info)

(defface guix-generation-info-not-current
  '((t nil))
  "Face used if a generation is not the current one."
  :group 'guix-generation-info)

(defun guix-generation-info-insert-number (number &optional _)
  "Insert generation NUMBER and action buttons."
  (guix-info-insert-val-default number 'guix-generation-info-number)
  (guix-info-insert-indent)
  (guix-info-insert-action-button
   "Packages"
   (lambda (btn)
     (guix-get-show-entries 'list guix-package-list-type 'generation
                            (button-get btn 'number)))
   "Show installed packages for this generation"
   'number number)
  (guix-info-insert-indent)
  (guix-info-insert-action-button
   "Delete"
   (lambda (btn)
     (guix-delete-generations (button-get btn 'number)))
   "Delete this generation"
   'number number))

(defun guix-generation-info-insert-current (val entry)
  "Insert boolean value VAL showing whether this generation is current."
  (if val
      (guix-info-insert-val-default "Yes" 'guix-generation-info-current)
    (guix-info-insert-val-default "No" 'guix-generation-info-not-current)))

(provide 'guix-info)

;;; guix-info.el ends here