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233e7676 | 1 | ;;; GNU Guix --- Functional package management for GNU |
ee06af5b | 2 | ;;; Copyright © 2012, 2013, 2014, 2015 Ludovic Courtès <ludo@gnu.org> |
c2868b1e | 3 | ;;; Copyright © 2013 Mark H Weaver <mhw@netris.org> |
7d193ec3 | 4 | ;;; Copyright © 2014 Eric Bavier <bavier@member.fsf.org> |
6caa4dfa | 5 | ;;; Copyright © 2016 Alex Kost <alezost@gmail.com> |
6b1891b0 | 6 | ;;; |
233e7676 | 7 | ;;; This file is part of GNU Guix. |
6b1891b0 | 8 | ;;; |
233e7676 | 9 | ;;; GNU Guix is free software; you can redistribute it and/or modify it |
6b1891b0 LC |
10 | ;;; under the terms of the GNU General Public License as published by |
11 | ;;; the Free Software Foundation; either version 3 of the License, or (at | |
12 | ;;; your option) any later version. | |
13 | ;;; | |
233e7676 | 14 | ;;; GNU Guix is distributed in the hope that it will be useful, but |
6b1891b0 LC |
15 | ;;; WITHOUT ANY WARRANTY; without even the implied warranty of |
16 | ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | ;;; GNU General Public License for more details. | |
18 | ;;; | |
19 | ;;; You should have received a copy of the GNU General Public License | |
233e7676 | 20 | ;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>. |
6b1891b0 | 21 | |
59a43334 | 22 | (define-module (gnu packages) |
6b1891b0 | 23 | #:use-module (guix packages) |
98eb8cbe | 24 | #:use-module (guix ui) |
800cdeef | 25 | #:use-module (guix utils) |
6b1891b0 | 26 | #:use-module (ice-9 ftw) |
c2868b1e | 27 | #:use-module (ice-9 vlist) |
dc5669cd | 28 | #:use-module (ice-9 match) |
6b1891b0 | 29 | #:use-module (srfi srfi-1) |
5e3b388b | 30 | #:use-module (srfi srfi-11) |
6b1891b0 | 31 | #:use-module (srfi srfi-26) |
dbab5150 LC |
32 | #:use-module (srfi srfi-34) |
33 | #:use-module (srfi srfi-35) | |
800cdeef LC |
34 | #:use-module (srfi srfi-39) |
35 | #:export (search-patch | |
ac5aa288 | 36 | search-bootstrap-binary |
0492f4a2 | 37 | %patch-path |
0b3651bc | 38 | %bootstrap-binaries-path |
c107b541 | 39 | %package-module-path |
7d193ec3 | 40 | |
ba326ce4 | 41 | fold-packages |
7d193ec3 | 42 | |
dc5669cd | 43 | find-packages-by-name |
3f26bfc1 | 44 | find-best-packages-by-name |
7d193ec3 EB |
45 | find-newest-available-packages |
46 | ||
84189ebc LC |
47 | specification->package |
48 | specification->package+output)) | |
6b1891b0 LC |
49 | |
50 | ;;; Commentary: | |
51 | ;;; | |
52 | ;;; General utilities for the software distribution---i.e., the modules under | |
59a43334 | 53 | ;;; (gnu packages ...). |
6b1891b0 LC |
54 | ;;; |
55 | ;;; Code: | |
56 | ||
0b3651bc LC |
57 | ;; By default, we store patches and bootstrap binaries alongside Guile |
58 | ;; modules. This is so that these extra files can be found without | |
59 | ;; requiring a special setup, such as a specific installation directory | |
60 | ;; and an extra environment variable. One advantage of this setup is | |
61 | ;; that everything just works in an auto-compilation setting. | |
a9f60c42 | 62 | |
a9f60c42 | 63 | (define %bootstrap-binaries-path |
ac5aa288 | 64 | (make-parameter |
1ffa7090 | 65 | (map (cut string-append <> "/gnu/packages/bootstrap") |
0b3651bc | 66 | %load-path))) |
ac5aa288 | 67 | |
800cdeef | 68 | (define (search-patch file-name) |
dbab5150 LC |
69 | "Search the patch FILE-NAME. Raise an error if not found." |
70 | (or (search-path (%patch-path) file-name) | |
71 | (raise (condition | |
72 | (&message (message (format #f (_ "~a: patch not found") | |
73 | file-name))))))) | |
800cdeef | 74 | |
ac5aa288 | 75 | (define (search-bootstrap-binary file-name system) |
dfba5489 LC |
76 | "Search the bootstrap binary FILE-NAME for SYSTEM. Raise an error if not |
77 | found." | |
78 | (or (search-path (%bootstrap-binaries-path) | |
79 | (string-append system "/" file-name)) | |
80 | (raise (condition | |
81 | (&message | |
82 | (message | |
83 | (format #f (_ "could not find bootstrap binary '~a' \ | |
84 | for system '~a'") | |
85 | file-name system))))))) | |
ac5aa288 | 86 | |
84836a57 LC |
87 | (define %distro-root-directory |
88 | ;; Absolute file name of the module hierarchy. | |
89 | (dirname (search-path %load-path "guix.scm"))) | |
6b1891b0 | 90 | |
c107b541 LC |
91 | (define %package-module-path |
92 | ;; Search path for package modules. Each item must be either a directory | |
93 | ;; name or a pair whose car is a directory and whose cdr is a sub-directory | |
94 | ;; to narrow the search. | |
8689901f LC |
95 | (let* ((not-colon (char-set-complement (char-set #\:))) |
96 | (environment (string-tokenize (or (getenv "GUIX_PACKAGE_PATH") "") | |
97 | not-colon))) | |
98 | ;; Automatically add items from $GUIX_PACKAGE_PATH to Guile's search path. | |
99 | (for-each (lambda (directory) | |
100 | (set! %load-path (cons directory %load-path)) | |
101 | (set! %load-compiled-path | |
102 | (cons directory %load-compiled-path))) | |
103 | environment) | |
104 | ||
105 | (make-parameter | |
106 | (append environment `((,%distro-root-directory . "gnu/packages")))))) | |
c107b541 | 107 | |
ee06af5b LC |
108 | (define %patch-path |
109 | ;; Define it after '%package-module-path' so that '%load-path' contains user | |
110 | ;; directories, allowing patches in $GUIX_PACKAGE_PATH to be found. | |
111 | (make-parameter | |
112 | (map (lambda (directory) | |
113 | (if (string=? directory %distro-root-directory) | |
114 | (string-append directory "/gnu/packages/patches") | |
115 | directory)) | |
116 | %load-path))) | |
117 | ||
84836a57 | 118 | (define* (scheme-files directory) |
d95523fb LC |
119 | "Return the list of Scheme files found under DIRECTORY, recursively. The |
120 | returned list is sorted in alphabetical order." | |
121 | ||
122 | ;; Sort entries so that 'fold-packages' works in a deterministic fashion | |
123 | ;; regardless of details of the underlying file system. | |
124 | (sort (file-system-fold (const #t) ; enter? | |
125 | (lambda (path stat result) ; leaf | |
126 | (if (string-suffix? ".scm" path) | |
127 | (cons path result) | |
128 | result)) | |
129 | (lambda (path stat result) ; down | |
130 | result) | |
131 | (lambda (path stat result) ; up | |
132 | result) | |
133 | (const #f) ; skip | |
134 | (lambda (path stat errno result) | |
135 | (warning (_ "cannot access `~a': ~a~%") | |
136 | path (strerror errno)) | |
137 | result) | |
138 | '() | |
139 | directory | |
140 | stat) | |
141 | string<?)) | |
6b1891b0 | 142 | |
c107b541 LC |
143 | (define file-name->module-name |
144 | (let ((not-slash (char-set-complement (char-set #\/)))) | |
145 | (lambda (file) | |
146 | "Return the module name (a list of symbols) corresponding to FILE." | |
147 | (map string->symbol | |
148 | (string-tokenize (string-drop-right file 4) not-slash))))) | |
84836a57 LC |
149 | |
150 | (define* (package-modules directory #:optional sub-directory) | |
151 | "Return the list of modules that provide packages for the distribution. | |
152 | Optionally, narrow the search to SUB-DIRECTORY." | |
153 | (define prefix-len | |
154 | (string-length directory)) | |
155 | ||
156 | (filter-map (lambda (file) | |
4ae7559f LC |
157 | (let* ((file (substring file prefix-len)) |
158 | (module (file-name->module-name file))) | |
159 | (catch #t | |
160 | (lambda () | |
161 | (resolve-interface module)) | |
162 | (lambda args | |
163 | ;; Report the error, but keep going. | |
164 | (warn-about-load-error module args) | |
165 | #f)))) | |
84836a57 LC |
166 | (scheme-files (if sub-directory |
167 | (string-append directory "/" sub-directory) | |
168 | directory)))) | |
6b1891b0 | 169 | |
c107b541 LC |
170 | (define* (all-package-modules #:optional (path (%package-module-path))) |
171 | "Return the list of package modules found in PATH, a list of directories to | |
172 | search." | |
173 | (fold-right (lambda (spec result) | |
174 | (match spec | |
175 | ((? string? directory) | |
176 | (append (package-modules directory) result)) | |
177 | ((directory . sub-directory) | |
178 | (append (package-modules directory sub-directory) | |
179 | result)))) | |
180 | '() | |
181 | path)) | |
182 | ||
ba326ce4 LC |
183 | (define (fold-packages proc init) |
184 | "Call (PROC PACKAGE RESULT) for each available package, using INIT as | |
c2868b1e MW |
185 | the initial value of RESULT. It is guaranteed to never traverse the |
186 | same package twice." | |
187 | (identity ; discard second return value | |
188 | (fold2 (lambda (module result seen) | |
189 | (fold2 (lambda (var result seen) | |
190 | (if (and (package? var) | |
191 | (not (vhash-assq var seen))) | |
192 | (values (proc var result) | |
193 | (vhash-consq var #t seen)) | |
194 | (values result seen))) | |
195 | result | |
196 | seen | |
197 | (module-map (lambda (sym var) | |
198 | (false-if-exception (variable-ref var))) | |
199 | module))) | |
200 | init | |
201 | vlist-null | |
c107b541 | 202 | (all-package-modules)))) |
ba326ce4 | 203 | |
9ffc1c00 LC |
204 | (define find-packages-by-name |
205 | (let ((packages (delay | |
206 | (fold-packages (lambda (p r) | |
207 | (vhash-cons (package-name p) p r)) | |
724311a2 LC |
208 | vlist-null))) |
209 | (version>? (lambda (p1 p2) | |
210 | (version>? (package-version p1) (package-version p2))))) | |
9ffc1c00 LC |
211 | (lambda* (name #:optional version) |
212 | "Return the list of packages with the given NAME. If VERSION is not #f, | |
724311a2 LC |
213 | then only return packages whose version is prefixed by VERSION, sorted in |
214 | decreasing version order." | |
215 | (let ((matching (sort (vhash-fold* cons '() name (force packages)) | |
216 | version>?))) | |
9ffc1c00 LC |
217 | (if version |
218 | (filter (lambda (package) | |
724311a2 | 219 | (string-prefix? version (package-version package))) |
9ffc1c00 LC |
220 | matching) |
221 | matching))))) | |
dc5669cd | 222 | |
3f26bfc1 LC |
223 | (define find-newest-available-packages |
224 | (memoize | |
225 | (lambda () | |
226 | "Return a vhash keyed by package names, and with | |
dc5669cd MW |
227 | associated values of the form |
228 | ||
229 | (newest-version newest-package ...) | |
230 | ||
231 | where the preferred package is listed first." | |
232 | ||
3f26bfc1 LC |
233 | ;; FIXME: Currently, the preferred package is whichever one |
234 | ;; was found last by 'fold-packages'. Find a better solution. | |
235 | (fold-packages (lambda (p r) | |
236 | (let ((name (package-name p)) | |
237 | (version (package-version p))) | |
238 | (match (vhash-assoc name r) | |
239 | ((_ newest-so-far . pkgs) | |
240 | (case (version-compare version newest-so-far) | |
241 | ((>) (vhash-cons name `(,version ,p) r)) | |
242 | ((=) (vhash-cons name `(,version ,p ,@pkgs) r)) | |
243 | ((<) r))) | |
244 | (#f (vhash-cons name `(,version ,p) r))))) | |
245 | vlist-null)))) | |
246 | ||
247 | (define (find-best-packages-by-name name version) | |
248 | "If version is #f, return the list of packages named NAME with the highest | |
249 | version numbers; otherwise, return the list of packages named NAME and at | |
250 | VERSION." | |
251 | (if version | |
252 | (find-packages-by-name name version) | |
253 | (match (vhash-assoc name (find-newest-available-packages)) | |
254 | ((_ version pkgs ...) pkgs) | |
255 | (#f '())))) | |
7d193ec3 EB |
256 | |
257 | \f | |
4ea44419 AK |
258 | (define %sigint-prompt |
259 | ;; The prompt to jump to upon SIGINT. | |
260 | (make-prompt-tag "interruptible")) | |
261 | ||
262 | (define (call-with-sigint-handler thunk handler) | |
263 | "Call THUNK and return its value. Upon SIGINT, call HANDLER with the signal | |
264 | number in the context of the continuation of the call to this function, and | |
265 | return its return value." | |
266 | (call-with-prompt %sigint-prompt | |
267 | (lambda () | |
268 | (sigaction SIGINT | |
269 | (lambda (signum) | |
270 | (sigaction SIGINT SIG_DFL) | |
271 | (abort-to-prompt %sigint-prompt signum))) | |
272 | (dynamic-wind | |
273 | (const #t) | |
274 | thunk | |
275 | (cut sigaction SIGINT SIG_DFL))) | |
276 | (lambda (k signum) | |
277 | (handler signum)))) | |
278 | ||
5e3b388b CR |
279 | (define (specification->package spec) |
280 | "Return a package matching SPEC. SPEC may be a package name, or a package | |
281 | name followed by a hyphen and a version number. If the version number is not | |
282 | present, return the preferred newest version." | |
283 | (let-values (((name version) | |
284 | (package-name->name+version spec))) | |
285 | (match (find-best-packages-by-name name version) | |
286 | ((p) ; one match | |
287 | p) | |
288 | ((p x ...) ; several matches | |
289 | (warning (_ "ambiguous package specification `~a'~%") spec) | |
290 | (warning (_ "choosing ~a from ~a~%") | |
291 | (package-full-name p) | |
292 | (location->string (package-location p))) | |
293 | p) | |
294 | (_ ; no matches | |
295 | (if version | |
296 | (leave (_ "~A: package not found for version ~a~%") | |
297 | name version) | |
298 | (leave (_ "~A: unknown package~%") name)))))) | |
84189ebc LC |
299 | |
300 | (define* (specification->package+output spec #:optional (output "out")) | |
301 | "Return the package and output specified by SPEC, or #f and #f; SPEC may | |
302 | optionally contain a version number and an output name, as in these examples: | |
303 | ||
304 | guile | |
305 | guile-2.0.9 | |
306 | guile:debug | |
307 | guile-2.0.9:debug | |
308 | ||
309 | If SPEC does not specify a version number, return the preferred newest | |
310 | version; if SPEC does not specify an output, return OUTPUT." | |
311 | (define (ensure-output p sub-drv) | |
312 | (if (member sub-drv (package-outputs p)) | |
313 | sub-drv | |
314 | (leave (_ "package `~a' lacks output `~a'~%") | |
315 | (package-full-name p) | |
316 | sub-drv))) | |
317 | ||
318 | (let-values (((name version sub-drv) | |
319 | (package-specification->name+version+output spec output))) | |
320 | (match (find-best-packages-by-name name version) | |
321 | ((p) | |
322 | (values p (ensure-output p sub-drv))) | |
323 | ((p p* ...) | |
324 | (warning (_ "ambiguous package specification `~a'~%") | |
325 | spec) | |
326 | (warning (_ "choosing ~a from ~a~%") | |
327 | (package-full-name p) | |
328 | (location->string (package-location p))) | |
329 | (values p (ensure-output p sub-drv))) | |
330 | (() | |
331 | (leave (_ "~a: package not found~%") spec))))) |