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
|
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2021 Xinglu Chen <public@yoctocell.xyz>
;;; Copyright © 2021 Sarah Morgensen <iskarian@mgsn.dev>
;;;
;;; 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 git)
#:use-module (guix build utils)
#:use-module (guix diagnostics)
#:use-module (guix git)
#:use-module (guix git-download)
#:use-module (guix i18n)
#:use-module (guix packages)
#:use-module (guix upstream)
#:use-module (guix utils)
#:use-module (ice-9 format)
#:use-module (ice-9 match)
#:use-module (ice-9 rdelim)
#:use-module (ice-9 regex)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-26)
#:use-module (srfi srfi-34)
#:use-module (srfi srfi-35)
#:export (%generic-git-updater
;; For tests.
latest-git-tag-version))
;;; Commentary:
;;;
;;; This module provides a generic package updater for packages hosted on Git
;;; repositories.
;;;
;;; It tries to be smart about tag names, but if it is not automatically able
;;; to parse the tag names correctly, users can set the `release-tag-prefix',
;;; `release-tag-suffix' and `release-tag-version-delimiter' properties of the
;;; package to make the updater parse the Git tag name correctly.
;;;
;;; Possible improvements:
;;;
;;; * More robust method for trying to guess the delimiter. Maybe look at the
;;; previous version/tag combo to determine the delimiter.
;;;
;;; * Differentiate between "normal" versions, e.g., 1.2.3, and dates, e.g.,
;;; 2021.12.31. Honor a `release-tag-date-scheme?' property?
;;;
;;; Code:
;;; Errors & warnings
(define-condition-type &git-no-valid-tags-error &error
git-no-valid-tags-error?)
(define (git-no-valid-tags-error)
(raise (condition (&message (message "no valid tags found"))
(&git-no-valid-tags-error))))
(define-condition-type &git-no-tags-error &error
git-no-tags-error?)
(define (git-no-tags-error)
(raise (condition (&message (message "no tags were found"))
(&git-no-tags-error))))
;;; Updater
(define %pre-release-words
'("alpha" "beta" "rc" "dev" "test" "pre"))
(define %pre-release-rx
(map (lambda (word)
(make-regexp (string-append ".+" word) regexp/icase))
%pre-release-words))
(define* (version-mapping tags #:key prefix suffix delim pre-releases?)
"Given a list of Git TAGS, return an association list where the car is the
version corresponding to the tag, and the cdr is the name of the tag."
(define (guess-delimiter)
(let ((total (length tags))
(dots (reduce + 0 (map (cut string-count <> #\.) tags)))
(dashes (reduce + 0 (map (cut string-count <> #\-) tags)))
(underscores (reduce + 0 (map (cut string-count <> #\_) tags))))
(cond
((>= dots (* total 0.35)) ".")
((>= dashes (* total 0.8)) "-")
((>= underscores (* total 0.8)) "_")
(else ""))))
(define delim-rx (regexp-quote (or delim (guess-delimiter))))
(define suffix-rx (string-append (or suffix "") "$"))
(define prefix-rx (string-append "^" (or prefix "[^[:digit:]]*")))
(define pre-release-rx
(if pre-releases?
(string-append "(.*(" (string-join %pre-release-words "|") ").*)")
""))
(define tag-rx
(string-append prefix-rx "([[:digit:]][^" delim-rx "[:punct:]]*"
"(" delim-rx "[^[:punct:]" delim-rx "]+)"
;; If there are no delimiters, it could mean that the
;; version just contains one number (e.g., "2"), thus, use
;; "*" instead of "+" to match zero or more numbers.
(if (string=? delim-rx "") "*" "+") ")"
;; We don't want the pre-release stuff (e.g., "-alpha") be
;; part of the first group; otherwise, the "-" in "-alpha"
;; might be interpreted as a delimiter, and thus replaced
;; with "."
pre-release-rx suffix-rx))
(define (get-version tag)
(let ((tag-match (regexp-exec (make-regexp tag-rx) tag)))
(and=> (and tag-match
(regexp-substitute/global
#f delim-rx (match:substring tag-match 1)
;; If there were no delimiters, don't insert ".".
'pre (if (string=? delim-rx "") "" ".") 'post))
(lambda (version)
(if pre-releases?
(string-append version (match:substring tag-match 3))
version)))))
(define (entry<? a b)
(eq? (version-compare (car a) (car b)) '<))
(stable-sort (filter-map (lambda (tag)
(let ((version (get-version tag)))
(and version (cons version tag))))
tags)
entry<?))
(define* (latest-tag url #:key prefix suffix delim pre-releases?)
"Return the latest version and corresponding tag available from the Git
repository at URL."
(define (pre-release? tag)
(any (cut regexp-exec <> tag)
%pre-release-rx))
(let* ((tags (map (cut string-drop <> (string-length "refs/tags/"))
(remote-refs url #:tags? #t)))
(versions->tags
(version-mapping (if pre-releases?
tags
(filter (negate pre-release?) tags))
#:prefix prefix
#:suffix suffix
#:delim delim
#:pre-releases? pre-releases?)))
(cond
((null? tags)
(git-no-tags-error))
((null? versions->tags)
(git-no-valid-tags-error))
(else
(match (last versions->tags)
((version . tag)
(values version tag)))))))
(define (latest-git-tag-version package)
"Given a PACKAGE, return the latest version of it, or #f if the latest version
could not be determined."
(guard (c ((or (git-no-tags-error? c) (git-no-valid-tags-error? c))
(warning (or (package-field-location package 'source)
(package-location package))
(G_ "~a for ~a~%")
(condition-message c)
(package-name package))
#f)
((eq? (exception-kind c) 'git-error)
(warning (or (package-field-location package 'source)
(package-location package))
(G_ "failed to fetch Git repository for ~a~%")
(package-name package))
#f))
(let* ((source (package-source package))
(url (git-reference-url (origin-uri source)))
(property (cute assq-ref (package-properties package) <>)))
(latest-tag url
#:prefix (property 'release-tag-prefix)
#:suffix (property 'release-tag-suffix)
#:delim (property 'release-tag-version-delimiter)
#:pre-releases? (property 'accept-pre-releases?)))))
(define (git-package? package)
"Return true if PACKAGE is hosted on a Git repository."
(match (package-source package)
((? origin? origin)
(and (eq? (origin-method origin) git-fetch)
(git-reference? (origin-uri origin))))
(_ #f)))
(define (latest-git-release package)
"Return an <upstream-source> for the latest release of PACKAGE."
(let* ((name (package-name package))
(old-version (package-version package))
(url (git-reference-url (origin-uri (package-source package))))
(new-version (latest-git-tag-version package)))
(and new-version
(upstream-source
(package name)
(version new-version)
(urls (list url))))))
(define %generic-git-updater
(upstream-updater
(name 'generic-git)
(description "Updater for packages hosted on Git repositories")
(pred git-package?)
(latest latest-git-release)))
|
