summaryrefslogtreecommitdiff
path: root/emacs/guix-ui-generation.el
blob: 74b8ff2579731626656194237274c724521e98e9 (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
;;; guix-ui-generation.el --- Interface for displaying generations  -*- lexical-binding: t -*-

;; Copyright © 2014, 2015, 2016 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 an interface for displaying profile generations in
;; 'list' and 'info' buffers, and commands for working with them.

;;; Code:

(require 'cl-lib)
(require 'guix-buffer)
(require 'guix-list)
(require 'guix-info)
(require 'guix-ui)
(require 'guix-ui-package)
(require 'guix-base)
(require 'guix-backend)
(require 'guix-guile)
(require 'guix-entry)
(require 'guix-utils)

(guix-ui-define-entry-type generation)

(defun guix-generation-get-display (profile search-type &rest search-values)
  "Search for generations and show results.

If PROFILE is nil, use `guix-current-profile'.

See `guix-ui-get-entries' for the meaning of SEARCH-TYPE and
SEARCH-VALUES."
  (apply #'guix-list-get-display-entries
         'generation
         (or profile guix-current-profile)
         search-type search-values))

(defun guix-delete-generations (profile generations
                                &optional operation-buffer)
  "Delete GENERATIONS from PROFILE.
Each element from GENERATIONS is a generation number."
  (when (or (not guix-operation-confirm)
            (y-or-n-p
             (let ((count (length generations)))
               (if (> count 1)
                   (format "Delete %d generations from profile '%s'? "
                           count profile)
                 (format "Delete generation %d from profile '%s'? "
                         (car generations) profile)))))
    (guix-eval-in-repl
     (guix-make-guile-expression
      'delete-generations* profile generations)
     operation-buffer)))

(defun guix-switch-to-generation (profile generation
                                  &optional operation-buffer)
  "Switch PROFILE to GENERATION."
  (when (or (not guix-operation-confirm)
            (y-or-n-p (format "Switch profile '%s' to generation %d? "
                              profile generation)))
    (guix-eval-in-repl
     (guix-make-guile-expression
      'switch-to-generation* profile generation)
     operation-buffer)))

(defun guix-system-generation? ()
  "Return non-nil, if current generation is a system one."
  (eq (guix-buffer-current-entry-type)
      'system-generation))

(defun guix-generation-current-packages-profile (&optional generation)
  "Return a directory where packages are installed for the
current profile's GENERATION."
  (guix-packages-profile (guix-ui-current-profile)
                         generation
                         (guix-system-generation?)))


;;; Generation 'info'

(guix-ui-info-define-interface generation
  :buffer-name "*Guix Generation Info*"
  :format '((number format guix-generation-info-insert-number)
            (prev-number format (format))
            (current format guix-generation-info-insert-current)
            (path simple (indent guix-file))
            (time format (time)))
  :titles '((path . "File name")
            (prev-number . "Previous number")))

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

(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-faces)

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

(defun guix-generation-info-insert-number (number &optional _)
  "Insert generation NUMBER and action buttons."
  (guix-info-insert-value-format number 'guix-generation-info-number)
  (guix-info-insert-indent)
  (guix-info-insert-action-button
   "Packages"
   (lambda (btn)
     (guix-buffer-get-display-entries
      'list guix-package-list-type
      (list (guix-generation-current-packages-profile
             (button-get btn 'number))
            'installed)
      'add))
   "Show installed packages for this generation"
   'number number)
  (guix-info-insert-indent)
  (guix-info-insert-action-button
   "Delete"
   (lambda (btn)
     (guix-delete-generations (guix-ui-current-profile)
                              (list (button-get btn 'number))
                              (current-buffer)))
   "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-value-format "Yes" 'guix-generation-info-current)
    (guix-info-insert-value-format "No" 'guix-generation-info-not-current)
    (guix-info-insert-indent)
    (guix-info-insert-action-button
     "Switch"
     (lambda (btn)
       (guix-switch-to-generation (guix-ui-current-profile)
                                  (button-get btn 'number)
                                  (current-buffer)))
     "Switch to this generation (make it the current one)"
     'number (guix-entry-value entry 'number))))


;;; Generation 'list'

(guix-ui-list-define-interface generation
  :buffer-name "*Guix Generation List*"
  :format '((number nil 5 guix-list-sort-numerically-0 :right-align t)
            (current guix-generation-list-get-current 10 t)
            (time guix-list-get-time 20 t)
            (path guix-list-get-file-name 30 t))
  :titles '((number . "N."))
  :sort-key '(number . t)
  :marks '((delete . ?D)))

(let ((map guix-generation-list-mode-map))
  (define-key map (kbd "RET") 'guix-generation-list-show-packages)
  (define-key map (kbd "+")   'guix-generation-list-show-added-packages)
  (define-key map (kbd "-")   'guix-generation-list-show-removed-packages)
  (define-key map (kbd "=")   'guix-generation-list-diff)
  (define-key map (kbd "D")   'guix-generation-list-diff)
  (define-key map (kbd "e")   'guix-generation-list-ediff)
  (define-key map (kbd "x")   'guix-generation-list-execute)
  (define-key map (kbd "s")   'guix-generation-list-switch)
  (define-key map (kbd "c")   'guix-generation-list-switch)
  (define-key map (kbd "d")   'guix-generation-list-mark-delete))

(defun guix-generation-list-get-current (val &optional _)
  "Return string from VAL showing whether this generation is current.
VAL is a boolean value."
  (if val "(current)" ""))

(defun guix-generation-list-switch ()
  "Switch current profile to the generation at point."
  (interactive)
  (let* ((entry   (guix-list-current-entry))
         (current (guix-entry-value entry 'current))
         (number  (guix-entry-value entry 'number)))
    (if current
        (user-error "This generation is already the current one")
      (guix-switch-to-generation (guix-ui-current-profile)
                                 number (current-buffer)))))

(defun guix-generation-list-show-packages ()
  "List installed packages for the generation at point."
  (interactive)
  (guix-package-get-display
   (guix-generation-current-packages-profile (guix-list-current-id))
   'installed))

(defun guix-generation-list-generations-to-compare ()
  "Return a sorted list of 2 marked generations for comparing."
  (let ((numbers (guix-list-get-marked-id-list 'general)))
    (if (/= (length numbers) 2)
        (user-error "2 generations should be marked for comparing")
      (sort numbers #'<))))

(defun guix-generation-list-profiles-to-compare ()
  "Return a sorted list of 2 marked generation profiles for comparing."
  (mapcar #'guix-generation-current-packages-profile
          (guix-generation-list-generations-to-compare)))

(defun guix-generation-list-show-added-packages ()
  "List package outputs added to the latest marked generation.
If 2 generations are marked with \\[guix-list-mark], display
outputs installed in the latest marked generation that were not
installed in the other one."
  (interactive)
  (guix-buffer-get-display-entries
   'list 'output
   (cl-list* (guix-ui-current-profile)
             'profile-diff
             (reverse (guix-generation-list-profiles-to-compare)))
   'add))

(defun guix-generation-list-show-removed-packages ()
  "List package outputs removed from the latest marked generation.
If 2 generations are marked with \\[guix-list-mark], display
outputs not installed in the latest marked generation that were
installed in the other one."
  (interactive)
  (guix-buffer-get-display-entries
   'list 'output
   (cl-list* (guix-ui-current-profile)
             'profile-diff
             (guix-generation-list-profiles-to-compare))
   'add))

(defun guix-generation-list-compare (diff-fun gen-fun)
  "Run GEN-FUN on the 2 marked generations and run DIFF-FUN on the results."
  (cl-multiple-value-bind (gen1 gen2)
      (guix-generation-list-generations-to-compare)
    (funcall diff-fun
             (funcall gen-fun gen1)
             (funcall gen-fun gen2))))

(defun guix-generation-list-ediff-manifests ()
  "Run Ediff on manifests of the 2 marked generations."
  (interactive)
  (guix-generation-list-compare
   #'ediff-files
   #'guix-profile-generation-manifest-file))

(defun guix-generation-list-diff-manifests ()
  "Run Diff on manifests of the 2 marked generations."
  (interactive)
  (guix-generation-list-compare
   #'guix-diff
   #'guix-profile-generation-manifest-file))

(defun guix-generation-list-ediff-packages ()
  "Run Ediff on package outputs installed in the 2 marked generations."
  (interactive)
  (guix-generation-list-compare
   #'ediff-buffers
   #'guix-profile-generation-packages-buffer))

(defun guix-generation-list-diff-packages ()
  "Run Diff on package outputs installed in the 2 marked generations."
  (interactive)
  (guix-generation-list-compare
   #'guix-diff
   #'guix-profile-generation-packages-buffer))

(defun guix-generation-list-ediff (arg)
  "Run Ediff on package outputs installed in the 2 marked generations.
With ARG, run Ediff on manifests of the marked generations."
  (interactive "P")
  (if arg
      (guix-generation-list-ediff-manifests)
    (guix-generation-list-ediff-packages)))

(defun guix-generation-list-diff (arg)
  "Run Diff on package outputs installed in the 2 marked generations.
With ARG, run Diff on manifests of the marked generations."
  (interactive "P")
  (if arg
      (guix-generation-list-diff-manifests)
    (guix-generation-list-diff-packages)))

(defun guix-generation-list-mark-delete (&optional arg)
  "Mark the current generation for deletion and move to the next line.
With ARG, mark all generations for deletion."
  (interactive "P")
  (if arg
      (guix-list-mark-all 'delete)
    (guix-list--mark 'delete t)))

(defun guix-generation-list-execute ()
  "Delete marked generations."
  (interactive)
  (let ((marked (guix-list-get-marked-id-list 'delete)))
    (or marked
        (user-error "No generations marked for deletion"))
    (guix-delete-generations (guix-ui-current-profile)
                             marked (current-buffer))))


;;; Inserting packages to compare generations

(defcustom guix-generation-packages-buffer-name-function
  #'guix-generation-packages-buffer-name-default
  "Function used to define name of a buffer with generation packages.
This function is called with 2 arguments: PROFILE (string) and
GENERATION (number)."
  :type '(choice (function-item guix-generation-packages-buffer-name-default)
                 (function-item guix-generation-packages-buffer-name-long)
                 (function :tag "Other function"))
  :group 'guix-generation)

(defcustom guix-generation-packages-update-buffer t
  "If non-nil, always update list of packages during comparing generations.
If nil, generation packages are received only once.  So when you
compare generation 1 and generation 2, the packages for both
generations will be received.  Then if you compare generation 1
and generation 3, only the packages for generation 3 will be
received.  Thus if you use comparing of different generations a
lot, you may set this variable to nil to improve the
performance."
  :type 'boolean
  :group 'guix-generation)

(defvar guix-generation-output-name-width 30
  "Width of an output name \"column\".
This variable is used in auxiliary buffers for comparing generations.")

(defun guix-generation-packages (profile)
  "Return a list of sorted packages installed in PROFILE.
Each element of the list is a list of the package specification
and its store path."
  (let ((names+paths (guix-eval-read
                      (guix-make-guile-expression
                       'profile->specifications+paths profile))))
    (sort names+paths
          (lambda (a b)
            (string< (car a) (car b))))))

(defun guix-generation-packages-buffer-name-default (profile generation)
  "Return name of a buffer for displaying GENERATION's package outputs.
Use base name of PROFILE file name."
  (let ((profile-name (file-name-base (directory-file-name profile))))
    (format "*Guix %s: generation %s*"
            profile-name generation)))

(defun guix-generation-packages-buffer-name-long (profile generation)
  "Return name of a buffer for displaying GENERATION's package outputs.
Use the full PROFILE file name."
  (format "*Guix generation %s (%s)*"
          generation profile))

(defun guix-generation-packages-buffer-name (profile generation)
  "Return name of a buffer for displaying GENERATION's package outputs."
  (funcall guix-generation-packages-buffer-name-function
           profile generation))

(defun guix-generation-insert-package (name path)
  "Insert package output NAME and store PATH at point."
  (insert name)
  (indent-to guix-generation-output-name-width 2)
  (insert path "\n"))

(defun guix-generation-insert-packages (buffer profile)
  "Insert package outputs installed in PROFILE in BUFFER."
  (with-current-buffer buffer
    (setq buffer-read-only nil
          indent-tabs-mode nil)
    (erase-buffer)
    (mapc (lambda (name+path)
            (guix-generation-insert-package
             (car name+path) (cadr name+path)))
          (guix-generation-packages profile))))

(defun guix-generation-packages-buffer (profile generation &optional system?)
  "Return buffer with package outputs installed in PROFILE's GENERATION.
Create the buffer if needed."
  (let ((buf-name (guix-generation-packages-buffer-name
                   profile generation)))
    (or (and (null guix-generation-packages-update-buffer)
             (get-buffer buf-name))
        (let ((buf (get-buffer-create buf-name)))
          (guix-generation-insert-packages
           buf
           (guix-packages-profile profile generation system?))
          buf))))

(defun guix-profile-generation-manifest-file (generation)
  "Return the file name of a GENERATION's manifest.
GENERATION is a generation number of the current profile."
  (guix-manifest-file (guix-ui-current-profile)
                      generation
                      (guix-system-generation?)))

(defun guix-profile-generation-packages-buffer (generation)
  "Insert GENERATION's package outputs in a buffer and return it.
GENERATION is a generation number of the current profile."
  (guix-generation-packages-buffer (guix-ui-current-profile)
                                   generation
                                   (guix-system-generation?)))


;;; Interactive commands

;;;###autoload
(defun guix-generations (&optional profile)
  "Display information about all generations.
If PROFILE is nil, use `guix-current-profile'.
Interactively with prefix, prompt for PROFILE."
  (interactive (list (guix-ui-read-profile)))
  (guix-generation-get-display profile 'all))

;;;###autoload
(defun guix-last-generations (number &optional profile)
  "Display information about last NUMBER generations.
If PROFILE is nil, use `guix-current-profile'.
Interactively with prefix, prompt for PROFILE."
  (interactive
   (list (read-number "The number of last generations: ")
         (guix-ui-read-profile)))
  (guix-generation-get-display profile 'last number))

;;;###autoload
(defun guix-generations-by-time (from to &optional profile)
  "Display information about generations created between FROM and TO.
FROM and TO should be time values.
If PROFILE is nil, use `guix-current-profile'.
Interactively with prefix, prompt for PROFILE."
  (interactive
   (list (guix-read-date "Find generations (from): ")
         (guix-read-date "Find generations (to): ")
         (guix-ui-read-profile)))
  (guix-generation-get-display profile 'time
                               (float-time from)
                               (float-time to)))

(provide 'guix-ui-generation)

;;; guix-ui-generation.el ends here