unofficial mirror of guix-devel@gnu.org 
 help / color / mirror / code / Atom feed
blob 4694b6e7ef0378b72a3093c62e212a0ce7b73846 16458 bytes (raw)
name: guix/import/utils.scm 	 # note: path name is non-authoritative(*)

  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
 
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2012, 2013, 2018, 2019 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2016 Jelle Licht <jlicht@fsfe.org>
;;; Copyright © 2016 David Craven <david@craven.ch>
;;; Copyright © 2017, 2019 Ricardo Wurmus <rekado@elephly.net>
;;; Copyright © 2018 Oleg Pykhalov <go.wigust@gmail.com>
;;; Copyright © 2019 Robert Vollmert <rob@vllmrt.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 import utils)
  #:use-module (guix base32)
  #:use-module ((guix build download) #:prefix build:)
  #:use-module (gcrypt hash)
  #:use-module (guix http-client)
  #:use-module ((guix licenses) #:prefix license:)
  #:use-module (guix utils)
  #:use-module (guix packages)
  #:use-module (guix discovery)
  #:use-module (guix build-system)
  #:use-module (guix gexp)
  #:use-module (guix store)
  #:use-module (guix download)
  #:use-module (gnu packages)
  #:use-module (ice-9 match)
  #:use-module (ice-9 rdelim)
  #:use-module (ice-9 receive)
  #:use-module (ice-9 regex)
  #:use-module (srfi srfi-1)
  #:use-module (srfi srfi-11)
  #:use-module (srfi srfi-26)
  #:use-module (srfi srfi-41)
  #:export (factorize-uri

            flatten
            assoc-ref*

            url-fetch
            guix-hash-url

            package-names->package-inputs
            maybe-inputs
            maybe-native-inputs
            package->definition

            spdx-string->license
            license->symbol

            snake-case
            beautify-description

            alist->package

            read-lines
            chunk-lines

            guix-name

            recursive-import))

(define (factorize-uri uri version)
  "Factorize URI, a package tarball URI as a string, such that any occurrences
of the string VERSION is replaced by the symbol 'version."
  (let ((version-rx (make-regexp (regexp-quote version))))
    (match (regexp-exec version-rx uri)
      (#f
       uri)
      (_
       (let ((indices (fold-matches version-rx uri
                                    '((0))
                                    (lambda (m result)
                                      (match result
                                        (((start) rest ...)
                                         `((,(match:end m))
                                           (,start . ,(match:start m))
                                           ,@rest)))))))
         (fold (lambda (index result)
                 (match index
                   ((start)
                    (cons (substring uri start)
                          result))
                   ((start . end)
                    (cons* (substring uri start end)
                           'version
                           result))))
               '()
               indices))))))

(define (flatten lst)
  "Return a list that recursively concatenates all sub-lists of LST."
  (fold-right
   (match-lambda*
    (((sub-list ...) memo)
     (append (flatten sub-list) memo))
    ((elem memo)
     (cons elem memo)))
   '() lst))

(define (assoc-ref* alist key . rest)
  "Return the value for KEY from ALIST.  For each additional key specified,
recursively apply the procedure to the sub-list."
  (if (null? rest)
      (assoc-ref alist key)
      (apply assoc-ref* (assoc-ref alist key) rest)))

(define (url-fetch url file-name)
  "Save the contents of URL to FILE-NAME.  Return #f on failure."
  (parameterize ((current-output-port (current-error-port)))
    (build:url-fetch url file-name)))

(define (guix-hash-url filename)
  "Return the hash of FILENAME in nix-base32 format."
  (bytevector->nix-base32-string (file-sha256 filename)))

(define (spdx-string->license str)
  "Convert STR, a SPDX formatted license identifier, to a license object.
   Return #f if STR does not match any known identifiers."
  ;; https://spdx.org/licenses/
  ;; The psfl, gfl1.0, nmap, repoze
  ;; licenses doesn't have SPDX identifiers
  (match str
    ("AGPL-1.0"                    'license:agpl-1.0)
    ("AGPL-3.0"                    'license:agpl-3.0)
    ("Apache-1.1"                  'license:asl1.1)
    ("Apache-2.0"                  'license:asl2.0)
    ("BSL-1.0"                     'license:boost1.0)
    ("BSD-2-Clause-FreeBSD"        'license:bsd-2)
    ("BSD-3-Clause"                'license:bsd-3)
    ("BSD-4-Clause"                'license:bsd-4)
    ("CC0-1.0"                     'license:cc0)
    ("CC-BY-2.0"                   'license:cc-by2.0)
    ("CC-BY-3.0"                   'license:cc-by3.0)
    ("CC-BY-SA-2.0"                'license:cc-by-sa2.0)
    ("CC-BY-SA-3.0"                'license:cc-by-sa3.0)
    ("CC-BY-SA-4.0"                'license:cc-by-sa4.0)
    ("CDDL-1.0"                    'license:cddl1.0)
    ("CECILL-C"                    'license:cecill-c)
    ("Artistic-2.0"                'license:artistic2.0)
    ("ClArtistic"                  'license:clarified-artistic)
    ("CPL-1.0"                     'license:cpl1.0)
    ("EPL-1.0"                     'license:epl1.0)
    ("MIT"                         'license:expat)
    ("FTL"                         'license:freetype)
    ("GFDL-1.1"                    'license:fdl1.1+)
    ("GFDL-1.2"                    'license:fdl1.2+)
    ("GFDL-1.3"                    'license:fdl1.3+)
    ("Giftware"                    'license:giftware)
    ("GPL-1.0"                     'license:gpl1)
    ("GPL-1.0+"                    'license:gpl1+)
    ("GPL-2.0"                     'license:gpl2)
    ("GPL-2.0+"                    'license:gpl2+)
    ("GPL-3.0"                     'license:gpl3)
    ("GPL-3.0+"                    'license:gpl3+)
    ("ISC"                         'license:isc)
    ("IJG"                         'license:ijg)
    ("Imlib2"                      'license:imlib2)
    ("IPA"                         'license:ipa)
    ("IPL-1.0"                     'license:ibmpl1.0)
    ("LGPL-2.0"                    'license:lgpl2.0)
    ("LGPL-2.0+"                   'license:lgpl2.0+)
    ("LGPL-2.1"                    'license:lgpl2.1)
    ("LGPL-2.1+"                   'license:lgpl2.1+)
    ("LGPL-3.0"                    'license:lgpl3.0)
    ("LGPL-3.0+"                   'license:lgpl3.0+)
    ("MPL-1.0"                     'license:mpl1.0)
    ("MPL-1.1"                     'license:mpl1.1)
    ("MPL-2.0"                     'license:mpl2.0)
    ("MS-PL"                       'license:ms-pl)
    ("NCSA"                        'license:ncsa)
    ("OpenSSL"                     'license:openssl)
    ("OLDAP-2.8"                   'license:openldap2.8)
    ("CUA-OPL-1.0"                 'license:opl1.0)
    ("QPL-1.0"                     'license:qpl)
    ("Ruby"                        'license:ruby)
    ("SGI-B-2.0"                   'license:sgifreeb2.0)
    ("OFL-1.1"                     'license:silofl1.1)
    ("Sleepycat"                   'license:sleepycat)
    ("TCL"                         'license:tcl/tk)
    ("Unlicense"                   'license:unlicense)
    ("Vim"                         'license:vim)
    ("X11"                         'license:x11)
    ("ZPL-2.1"                     'license:zpl2.1)
    ("Zlib"                        'license:zlib)
    (_ #f)))

(define (license->symbol license)
  "Convert license to a symbol representing the variable the object is bound
to in the (guix licenses) module, or #f if there is no such known license."
  (define licenses
    (module-map (lambda (sym var) `(,(variable-ref var) . ,sym))
                (resolve-interface '(guix licenses) #:prefix 'license:)))
  (assoc-ref licenses license))

(define (snake-case str)
  "Return a downcased version of the string STR where underscores are replaced
with dashes."
  (string-join (string-split (string-downcase str) #\_) "-"))

(define (beautify-description description)
  "Improve the package DESCRIPTION by turning a beginning sentence fragment
into a proper sentence and by using two spaces between sentences."
  (let ((cleaned (cond
                  ((string-prefix? "A " description)
                   (string-append "This package provides a"
                                  (substring description 1)))
                  ((string-prefix? "Provides " description)
                   (string-append "This package provides"
                                  (substring description
                                             (string-length "Provides"))))
                  ((string-prefix? "Functions " description)
                   (string-append "This package provides functions"
                                  (substring description
                                             (string-length "Functions"))))
                  (else description))))
    ;; Use double spacing between sentences
    (regexp-substitute/global #f "\\. \\b"
                              cleaned 'pre ".  " 'post)))

(define* (package-names->package-inputs names #:optional (output #f))
  "Given a list of PACKAGE-NAMES, and an optional OUTPUT, tries to generate a
quoted list of inputs, as suitable to use in an 'inputs' field of a package
definition."
  (map (lambda (input)
         (cons* input (list 'unquote (string->symbol input))
                            (or (and output (list output))
                                '())))
       names))

(define* (maybe-inputs package-names #:optional (output #f))
  "Given a list of PACKAGE-NAMES, tries to generate the 'inputs' field of a
package definition."
  (match (package-names->package-inputs package-names output)
    (()
     '())
    ((package-inputs ...)
     `((inputs (,'quasiquote ,package-inputs))))))

(define* (maybe-native-inputs package-names #:optional (output #f))
  "Given a list of PACKAGE-NAMES, tries to generate the 'inputs' field of a
package definition."
  (match (package-names->package-inputs package-names output)
    (()
     '())
    ((package-inputs ...)
     `((native-inputs (,'quasiquote ,package-inputs))))))

(define (package->definition guix-package)
  (match guix-package
    (('package ('name (? string? name)) _ ...)
     `(define-public ,(string->symbol name)
        ,guix-package))
    (('let anything ('package ('name (? string? name)) _ ...))
     `(define-public ,(string->symbol name)
        ,guix-package))))

(define (build-system-modules)
  (all-modules (map (lambda (entry)
                      `(,entry . "guix/build-system"))
                    %load-path)))

(define (lookup-build-system-by-name name)
  "Return a <build-system> value for the symbol NAME, representing the name of
the build system."
  (fold-module-public-variables (lambda (obj result)
                                  (if (and (build-system? obj)
                                           (eq? name (build-system-name obj)))
                                      obj result))
                                #f
                                (build-system-modules)))

(define (specs->package-lists specs)
  "Convert each string in the SPECS list to a list of a package label and a
package value."
  (map (lambda (spec)
         (let-values (((pkg out) (specification->package+output spec)))
           (match out
             ("out" (list (package-name pkg) pkg))
             (_ (list (package-name pkg) pkg out)))))
       specs))

(define (source-spec->object source)
  "Generate an <origin> object from a SOURCE specification.  The SOURCE can
either be a simple URL string, #F, or an alist containing entries for each of
the expected fields of an <origin> object."
  (match source
    ((? string? source-url)
     (let ((tarball (with-store store (download-to-store store source-url))))
       (origin
         (method url-fetch)
         (uri source-url)
         (sha256 (base32 (guix-hash-url tarball))))))
    (#f #f)
    (orig (let ((sha (match (assoc-ref orig "sha256")
                       ((("base32" . value))
                        (base32 value))
                       (_ #f))))
            (origin
              (method (match (assoc-ref orig "method")
                        ("url-fetch" (@ (guix download) url-fetch))
                        ("git-fetch" (@ (guix git-download) git-fetch))
                        ("svn-fetch" (@ (guix svn-download) svn-fetch))
                        ("hg-fetch"  (@ (guix hg-download) hg-fetch))
                        (_ #f)))
              (uri (assoc-ref orig "uri"))
              (sha256 sha))))))

(define (alist->package meta)
  (package
    (name (assoc-ref meta "name"))
    (version (assoc-ref meta "version"))
    (source (source-spec->object (assoc-ref meta "source")))
    (build-system
      (lookup-build-system-by-name
       (string->symbol (assoc-ref meta "build-system"))))
    (native-inputs
     (specs->package-lists
      (vector->list (or (assoc-ref meta "native-inputs") '#()))))
    (inputs
     (specs->package-lists
      (vector->list (or (assoc-ref meta "inputs") '#()))))
    (propagated-inputs
     (specs->package-lists
      (vector->list (or (assoc-ref meta "propagated-inputs") '#()))))
    (home-page
     (assoc-ref meta "home-page"))
    (synopsis
     (assoc-ref meta "synopsis"))
    (description
     (assoc-ref meta "description"))
    (license
     (match (assoc-ref meta "license")
       (#f #f)
       (l
        (or (module-ref (resolve-interface '(guix licenses) #:prefix 'license:)
                        (spdx-string->license l))
            (license:fsdg-compatible l)))))))

(define* (read-lines #:optional (port (current-input-port)))
  "Read lines from PORT and return them as a list."
  (let loop ((line (read-line port))
             (lines '()))
    (if (eof-object? line)
        (reverse lines)
        (loop (read-line port)
              (cons line lines)))))

(define* (chunk-lines lines #:optional (pred string-null?))
  "Return a list of chunks, each of which is a list of lines.  The chunks are
separated by PRED."
  (let loop ((rest lines)
             (parts '()))
    (receive (before after)
        (break pred rest)
      (let ((res (cons before parts)))
        (if (null? after)
            (reverse res)
            (loop (cdr after) res))))))

(define (guix-name prefix name)
  "Return a Guix package name for a given package name."
  (string-append prefix (string-map (match-lambda
                                      (#\_ #\-)
                                      (#\. #\-)
                                      (chr (char-downcase chr)))
                                    name)))

(define* (recursive-import package-name repo
                           #:key repo->guix-package guix-name
                           #:allow-other-keys)
  "Generate a stream of package expressions for PACKAGE-NAME and all its
dependencies."
  (define (exists? dependency)
    (not (null? (find-packages-by-name (guix-name dependency)))))
  (define initial-state (list #f (list package-name) (list)))
  (define (step state)
    (match state
      ((prev (next . rest) done)
       (define (handle? dep)
         (and
           (not (equal? dep next))
           (not (member dep done))
           (not (exists? dep))))
       (receive (package . dependencies) (repo->guix-package next repo)
         (list
           (if package package '()) ;; default #f on failure would interrupt
           (if package
             (lset-union equal? rest (filter handle? (car dependencies)))
             rest)
           (cons next done))))
      ((prev '() done)
       (list #f '() done))))

  ;; Generate a lazy stream of package expressions for all unknown
  ;; dependencies in the graph.
  (stream-unfold
    ;; map: produce a stream element
    (match-lambda ((latest queue done) latest))
    ;; predicate
    (match-lambda ((latest queue done) latest))
    ;; generator: update the queue
    step
    ;; initial state
    (step initial-state)))

debug log:

solving 4694b6e7ef ...
found 4694b6e7ef in https://git.savannah.gnu.org/cgit/guix.git

(*) Git path names are given by the tree(s) the blob belongs to.
    Blobs themselves have no identifier aside from the hash of its contents.^

Code repositories for project(s) associated with this public inbox

	https://git.savannah.gnu.org/cgit/guix.git

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).