summaryrefslogtreecommitdiff
path: root/guix/upstream.scm
blob: ca184601b2b01321e6301f79626109e9cdb8834b (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
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2015 Alex Kost <alezost@gmail.com>
;;; Copyright © 2019 Ricardo Wurmus <rekado@elephly.net>
;;;
;;; 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 (guix upstream)
  #:use-module (guix records)
  #:use-module (guix utils)
  #:use-module (guix discovery)
  #:use-module ((guix download)
                #:select (download-to-store url-fetch))
  #:use-module (guix gnupg)
  #:use-module (guix packages)
  #:use-module (guix diagnostics)
  #:use-module (guix ui)
  #:use-module (guix base32)
  #:use-module (guix gexp)
  #:use-module (guix store)
  #:use-module ((guix derivations)
                #:select (built-derivations derivation->output-path))
  #:use-module (guix monads)
  #:use-module (srfi srfi-1)
  #:use-module (srfi srfi-9)
  #:use-module (srfi srfi-11)
  #:use-module (srfi srfi-26)
  #:use-module (srfi srfi-34)
  #:use-module (srfi srfi-35)
  #:use-module (rnrs bytevectors)
  #:use-module (ice-9 match)
  #:use-module (ice-9 regex)
  #:export (upstream-source
            upstream-source?
            upstream-source-package
            upstream-source-version
            upstream-source-urls
            upstream-source-signature-urls
            upstream-source-archive-types
            upstream-source-input-changes

            url-predicate
            url-prefix-predicate
            coalesce-sources

            upstream-updater
            upstream-updater?
            upstream-updater-name
            upstream-updater-description
            upstream-updater-predicate
            upstream-updater-latest

            upstream-input-change?
            upstream-input-change-name
            upstream-input-change-type
            upstream-input-change-action
            changed-inputs

            %updaters
            lookup-updater

            download-tarball
            package-latest-release
            package-latest-release*
            package-update
            update-package-source))

;;; Commentary:
;;;
;;; This module provides tools to represent and manipulate a upstream source
;;; code, and to auto-update package recipes.
;;;
;;; Code:

;; Representation of upstream's source.  There can be several URLs--e.g.,
;; tar.gz, tar.gz, etc.  There can be correspond signature URLs, one per
;; source URL.
(define-record-type* <upstream-source>
  upstream-source make-upstream-source
  upstream-source?
  (package        upstream-source-package)        ;string
  (version        upstream-source-version)        ;string
  (urls           upstream-source-urls)           ;list of strings
  (signature-urls upstream-source-signature-urls  ;#f | list of strings
                  (default #f))
  (input-changes  upstream-source-input-changes
                  (default '()) (thunked)))

;; Representation of an upstream input change.
(define-record-type* <upstream-input-change>
  upstream-input-change make-upstream-input-change
  upstream-input-change?
  (name    upstream-input-change-name)    ;string
  (type    upstream-input-change-type)    ;symbol: regular | native | propagated
  (action  upstream-input-change-action)) ;symbol: add | remove

(define (changed-inputs package package-sexp)
  "Return a list of input changes for PACKAGE based on the newly imported
S-expression PACKAGE-SEXP."
  (match package-sexp
    ((and expr ('package fields ...))
     (let* ((input->name (match-lambda ((name pkg . out) name)))
            (new-regular
             (match expr
               ((path *** ('inputs
                           ('quasiquote ((label ('unquote sym)) ...)))) label)
               (_ '())))
            (new-native
             (match expr
               ((path *** ('native-inputs
                           ('quasiquote ((label ('unquote sym)) ...)))) label)
               (_ '())))
            (new-propagated
             (match expr
               ((path *** ('propagated-inputs
                           ('quasiquote ((label ('unquote sym)) ...)))) label)
               (_ '())))
            (current-regular
             (map input->name (package-inputs package)))
            (current-native
             (map input->name (package-native-inputs package)))
            (current-propagated
             (map input->name (package-propagated-inputs package))))
       (append-map
        (match-lambda
          ((action type names)
           (map (lambda (name)
                  (upstream-input-change
                   (name name)
                   (type type)
                   (action action)))
                names)))
        `((add regular
           ,(lset-difference equal?
                             new-regular current-regular))
          (remove regular
           ,(lset-difference equal?
                             current-regular new-regular))
          (add native
           ,(lset-difference equal?
                             new-native current-native))
          (remove native
           ,(lset-difference equal?
                             current-native new-native))
          (add propagated
           ,(lset-difference equal?
                             new-propagated current-propagated))
          (remove propagated
           ,(lset-difference equal?
                             current-propagated new-propagated))))))
    (_ '())))

(define* (url-predicate matching-url?)
  "Return a predicate that returns true when passed a package whose source is
an <origin> with the URL-FETCH method, and one of its URLs passes
MATCHING-URL?."
  (lambda (package)
    (match (package-source package)
      ((? origin? origin)
       (and (eq? (origin-method origin) url-fetch)
            (match (origin-uri origin)
              ((? string? url)
               (matching-url? url))
              (((? string? urls) ...)
               (any matching-url? urls))
              (_
               #f))))
      (_ #f))))

(define (url-prefix-predicate prefix)
  "Return a predicate that returns true when passed a package where one of its
source URLs starts with PREFIX."
  (url-predicate (cut string-prefix? prefix <>)))

(define (upstream-source-archive-types release)
  "Return the available types of archives for RELEASE---a list of strings such
as \"gz\" or \"xz\"."
  (map file-extension (upstream-source-urls release)))

(define (coalesce-sources sources)
  "Coalesce the elements of SOURCES, a list of <upstream-source>, that
correspond to the same version."
  (define (same-version? r1 r2)
    (string=? (upstream-source-version r1) (upstream-source-version r2)))

  (define (release>? r1 r2)
    (version>? (upstream-source-version r1) (upstream-source-version r2)))

  (fold (lambda (release result)
          (match result
            ((head . tail)
             (if (same-version? release head)
                 (cons (upstream-source
                        (inherit release)
                        (urls (append (upstream-source-urls release)
                                      (upstream-source-urls head)))
                        (signature-urls
                         (let ((one (upstream-source-signature-urls release))
                               (two (upstream-source-signature-urls head)))
                           (and one two (append one two)))))
                       tail)
                 (cons release result)))
            (()
             (list release))))
        '()
        (sort sources release>?)))


;;;
;;; Auto-update.
;;;

(define-record-type* <upstream-updater>
  upstream-updater make-upstream-updater
  upstream-updater?
  (name        upstream-updater-name)
  (description upstream-updater-description)
  (pred        upstream-updater-predicate)
  (latest      upstream-updater-latest))

(define (importer-modules)
  "Return the list of importer modules."
  (cons (resolve-interface '(guix gnu-maintenance))
        (all-modules (map (lambda (entry)
                            `(,entry . "guix/import"))
                          %load-path)
                     #:warn warn-about-load-error)))

(define %updaters
  ;; The list of publically-known updaters.
  (delay (fold-module-public-variables (lambda (obj result)
                                         (if (upstream-updater? obj)
                                             (cons obj result)
                                             result))
                                       '()
                                       (importer-modules))))

(define (lookup-updater package updaters)
  "Return an updater among UPDATERS that matches PACKAGE, or #f if none of
them matches."
  (find (match-lambda
          (($ <upstream-updater> name description pred latest)
           (pred package)))
        updaters))

(define (package-latest-release package updaters)
  "Return an upstream source to update PACKAGE, a <package> object, or #f if
none of UPDATERS matches PACKAGE.  It is the caller's responsibility to ensure
that the returned source is newer than the current one."
  (match (lookup-updater package updaters)
    ((? upstream-updater? updater)
     ((upstream-updater-latest updater) package))
    (_ #f)))

(define (package-latest-release* package updaters)
  "Like 'package-latest-release', but ensure that the return source is newer
than that of PACKAGE."
  (match (package-latest-release package updaters)
    ((and source ($ <upstream-source> name version))
     (and (version>? version (package-version package))
          source))
    (_
     #f)))

(define (uncompressed-tarball name tarball)
  "Return a derivation that decompresses TARBALL."
  (define (ref package)
    (module-ref (resolve-interface '(gnu packages compression))
                package))

  (define compressor
    (cond ((or (string-suffix? ".gz" tarball)
               (string-suffix? ".tgz" tarball))
           (file-append (ref 'gzip) "/bin/gzip"))
          ((string-suffix? ".bz2" tarball)
           (file-append (ref 'bzip2) "/bin/bzip2"))
          ((string-suffix? ".xz" tarball)
           (file-append (ref 'xz) "/bin/xz"))
          ((string-suffix? ".lz" tarball)
           (file-append (ref 'lzip) "/bin/lzip"))
          (else
           (error "unknown archive type" tarball))))

  (gexp->derivation (file-sans-extension name)
                    #~(begin
                        (copy-file #+tarball #+name)
                        (and (zero? (system* #+compressor "-d" #+name))
                             (copy-file #+(file-sans-extension name)
                                        #$output)))))

(define* (download-tarball store url signature-url
                           #:key (key-download 'interactive))
  "Download the tarball at URL to the store; check its OpenPGP signature at
SIGNATURE-URL, unless SIGNATURE-URL is false.  On success, return the tarball
file name; return #f on failure (network failure or authentication failure).
KEY-DOWNLOAD specifies a download policy for missing OpenPGP keys; allowed
values: 'interactive' (default), 'always', and 'never'."
  (let ((tarball (download-to-store store url)))
    (if (not signature-url)
        tarball
        (let* ((sig  (download-to-store store signature-url))

               ;; Sometimes we get a signature over the uncompressed tarball.
               ;; In that case, decompress the tarball in the store so that we
               ;; can check the signature.
               (data (if (string-prefix? (basename url)
                                         (basename signature-url))
                         tarball
                         (run-with-store store
                           (mlet %store-monad ((drv (uncompressed-tarball
                                                     (basename url) tarball)))
                             (mbegin %store-monad
                               (built-derivations (list drv))
                               (return (derivation->output-path drv))))))))
          (let-values (((status data)
                        (if sig
                            (gnupg-verify* sig data
                                           #:key-download key-download)
                            (values 'missing-signature data))))
            (match status
              ('valid-signature
               tarball)
              ('missing-signature
               (warning (G_ "failed to download detached signature from ~a~%")
                        signature-url)
               #f)
              ('invalid-signature
               (warning (G_ "signature verification failed for '~a' (key: ~a)~%")
                        url data)
               #f)
              ('missing-key
               (warning (G_ "missing public key ~a for '~a'~%")
                        data url)
               #f)))))))

(define (find2 pred lst1 lst2)
  "Like 'find', but operate on items from both LST1 and LST2.  Return two
values: the item from LST1 and the item from LST2 that match PRED."
  (let loop ((lst1 lst1) (lst2 lst2))
    (match lst1
      ((head1 . tail1)
       (match lst2
         ((head2 . tail2)
          (if (pred head1 head2)
              (values head1 head2)
              (loop tail1 tail2)))))
      (()
       (values #f #f)))))

(define* (package-update/url-fetch store package source
                                   #:key key-download)
  "Return the version, tarball, and SOURCE, to update PACKAGE to
SOURCE, an <upstream-source>."
  (match source
    (($ <upstream-source> _ version urls signature-urls)
     (let*-values (((archive-type)
                    (match (and=> (package-source package) origin-uri)
                      ((? string? uri)
                       (let ((type (file-extension (basename uri))))
                         ;; Sometimes we have URLs such as
                         ;; "https://github.com/…/tarball/v0.1", in which case
                         ;; we must not consider "1" as the extension.
                         (and (or (string-contains type "z")
                                  (string=? type "tar"))
                              type)))
                      (_
                       "gz")))
                   ((url signature-url)
                    ;; Try to find a URL that matches ARCHIVE-TYPE.
                    (find2 (lambda (url sig-url)
                             ;; Some URIs lack a file extension, like
                             ;; 'https://crates.io/???/0.1/download'.  In that
                             ;; case, pick the first URL.
                             (or (not archive-type)
                                 (string-suffix? archive-type url)))
                           urls
                           (or signature-urls (circular-list #f)))))
       ;; If none of URLS matches ARCHIVE-TYPE, then URL is #f; in that case,
       ;; pick up the first element of URLS.
       (let ((tarball (download-tarball store
                                        (or url (first urls))
                                        (and (pair? signature-urls)
                                             (or signature-url
                                                 (first signature-urls)))
                                        #:key-download key-download)))
         (values version tarball source))))))

(define %method-updates
  ;; Mapping of origin methods to source update procedures.
  `((,url-fetch . ,package-update/url-fetch)))

(define* (package-update store package updaters
                         #:key (key-download 'interactive))
  "Return the new version, the file name of the new version tarball, and input
changes for PACKAGE; return #f (three values) when PACKAGE is up-to-date.
KEY-DOWNLOAD specifies a download policy for missing OpenPGP keys; allowed
values: 'always', 'never', and 'interactive' (default)."
  (match (package-latest-release* package updaters)
    ((? upstream-source? source)
     (let ((method (match (package-source package)
                     ((? origin? origin)
                      (origin-method origin))
                     (_
                      #f))))
       (match (assq method %method-updates)
         (#f
          (raise (make-compound-condition
                  (formatted-message (G_ "cannot download for \
this method: ~s")
                                     method)
                  (condition
                   (&error-location
                    (location (package-location package)))))))
         ((_ . update)
          (update store package source
                  #:key-download key-download)))))
    (#f
     (values #f #f #f))))

(define* (update-package-source package source hash)
  "Modify the source file that defines PACKAGE to refer to SOURCE, an
<upstream-source> whose tarball has SHA256 HASH (a bytevector).  Return the
new version string if an update was made, and #f otherwise."
  (define (update-expression expr replacements)
    ;; Apply REPLACEMENTS to package expression EXPR, a string.  REPLACEMENTS
    ;; must be a list of replacement pairs, either bytevectors or strings.
    (fold (lambda (replacement str)
            (match replacement
              (((? bytevector? old-bv) . (? bytevector? new-bv))
               (string-replace-substring
                str
                (bytevector->nix-base32-string old-bv)
                (bytevector->nix-base32-string new-bv)))
              ((old . new)
               (string-replace-substring str old new))))
          expr
          replacements))

  (let ((name        (package-name package))
        (version     (upstream-source-version source))
        (version-loc (package-field-location package 'version)))
    (if version-loc
        (let* ((loc         (package-location package))
               (old-version (package-version package))
               (old-hash    (content-hash-value
                             (origin-hash (package-source package))))
               (old-url     (match (origin-uri (package-source package))
                              ((? string? url) url)
                              (_ #f)))
               (new-url     (match (upstream-source-urls source)
                              ((first _ ...) first)))
               (file        (and=> (location-file loc)
                                   (cut search-path %load-path <>))))
          (if file
              ;; Be sure to use absolute filename.  Replace the URL directory
              ;; when OLD-URL is available; this is useful notably for
              ;; mirror://cpan/ URLs where the directory may change as a
              ;; function of the person who uploads the package.  Note that
              ;; package definitions usually concatenate fragments of the URL,
              ;; which is why we only attempt to replace a subset of the URL.
              (let ((properties (assq-set! (location->source-properties loc)
                                           'filename file))
                    (replacements `((,old-version . ,version)
                                    (,old-hash . ,hash)
                                    ,@(if (and old-url new-url)
                                          `((,(dirname old-url) .
                                             ,(dirname new-url)))
                                          '()))))
                (and (edit-expression properties
                                      (cut update-expression <> replacements))
                     version))
              (begin
                (warning (G_ "~a: could not locate source file")
                         (location-file loc))
                #f)))
        (warning (package-location package)
                 (G_ "~a: no `version' field in source; skipping~%")
                 name))))

;;; upstream.scm ends here