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233e7676 | 1 | ;;; GNU Guix --- Functional package management for GNU |
6a7c4636 | 2 | ;;; Copyright © 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 Ludovic Courtès <ludo@gnu.org> |
3f00ff8b | 3 | ;;; Copyright © 2013, 2014, 2015 Mark H Weaver <mhw@netris.org> |
516e3b6f | 4 | ;;; Copyright © 2014 Eric Bavier <bavier@member.fsf.org> |
29a7c98a | 5 | ;;; Copyright © 2014 Ian Denhardt <ian@zenhack.net> |
1b846da8 | 6 | ;;; Copyright © 2016 Mathieu Lirzin <mthl@gnu.org> |
bbd00d20 | 7 | ;;; Copyright © 2015 David Thompson <davet@gnu.org> |
e45b573c | 8 | ;;; Copyright © 2017 Mathieu Othacehe <m.othacehe@gmail.com> |
fb9a57a8 | 9 | ;;; Copyright © 2018, 2020 Marius Bakke <marius@gnu.org> |
e3deeebb | 10 | ;;; |
233e7676 | 11 | ;;; This file is part of GNU Guix. |
e3deeebb | 12 | ;;; |
233e7676 | 13 | ;;; GNU Guix is free software; you can redistribute it and/or modify it |
e3deeebb LC |
14 | ;;; under the terms of the GNU General Public License as published by |
15 | ;;; the Free Software Foundation; either version 3 of the License, or (at | |
16 | ;;; your option) any later version. | |
17 | ;;; | |
233e7676 | 18 | ;;; GNU Guix is distributed in the hope that it will be useful, but |
e3deeebb LC |
19 | ;;; WITHOUT ANY WARRANTY; without even the implied warranty of |
20 | ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | ;;; GNU General Public License for more details. | |
22 | ;;; | |
23 | ;;; You should have received a copy of the GNU General Public License | |
233e7676 | 24 | ;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>. |
e3deeebb LC |
25 | |
26 | (define-module (guix utils) | |
00e219d1 | 27 | #:use-module (guix config) |
38b3122a | 28 | #:use-module (srfi srfi-1) |
72d86963 | 29 | #:use-module (srfi srfi-9) |
01ac19dc | 30 | #:use-module (srfi srfi-11) |
38b3122a | 31 | #:use-module (srfi srfi-26) |
de4c3f26 | 32 | #:use-module (srfi srfi-39) |
27f7cbc9 | 33 | #:use-module (ice-9 ftw) |
6a7c4636 | 34 | #:use-module (rnrs io ports) ;need 'port-position' etc. |
c8be6f0d | 35 | #:use-module ((rnrs bytevectors) #:select (bytevector-u8-set!)) |
f9704f17 | 36 | #:use-module (guix memoization) |
27f7cbc9 | 37 | #:use-module ((guix build utils) #:select (dump-port mkdir-p delete-file-recursively)) |
1752a17a | 38 | #:use-module ((guix build syscalls) #:select (mkdtemp! fdatasync)) |
a5e2fc73 | 39 | #:use-module (guix diagnostics) ;<location>, &error-location, etc. |
38b3122a | 40 | #:use-module (ice-9 format) |
98090557 | 41 | #:use-module (ice-9 regex) |
72d86963 | 42 | #:use-module (ice-9 match) |
8ef3401f | 43 | #:use-module (ice-9 format) |
31044751 | 44 | #:use-module ((ice-9 iconv) #:prefix iconv:) |
2cd5c038 | 45 | #:use-module (system foreign) |
6a79eed9 | 46 | #:re-export (<location> ;for backwards compatibility |
a5e2fc73 LC |
47 | location |
48 | location? | |
49 | location-file | |
50 | location-line | |
51 | location-column | |
52 | source-properties->location | |
53 | location->source-properties | |
54 | ||
55 | &error-location | |
56 | error-location? | |
f9a8dd05 LC |
57 | error-location |
58 | ||
59 | &fix-hint | |
60 | fix-hint? | |
61 | condition-fix-hint) | |
4c0c4db0 | 62 | #:export (strip-keyword-arguments |
0af2c24e LC |
63 | default-keyword-arguments |
64 | substitute-keyword-arguments | |
6071122b | 65 | ensure-keyword-arguments |
ff352cfb | 66 | |
07c8a98c LC |
67 | current-source-directory |
68 | ||
8eb80484 | 69 | nix-system->gnu-triplet |
98090557 | 70 | gnu-triplet->nix-system |
9b48fb88 | 71 | %current-system |
9c1edabd | 72 | %current-target-system |
1b846da8 | 73 | package-name->name+version |
cba36e64 | 74 | target-mingw? |
e45b573c | 75 | target-arm32? |
74f17180 MO |
76 | target-aarch64? |
77 | target-arm? | |
259341cf | 78 | target-64bit? |
fb9a57a8 MB |
79 | cc-for-target |
80 | ||
0d1e6ce4 MW |
81 | version-compare |
82 | version>? | |
cde1e967 | 83 | version>=? |
29a7c98a ID |
84 | version-prefix |
85 | version-major+minor | |
47dc9a0d | 86 | version-major |
7db3ff4a | 87 | guile-version>? |
437f62f0 | 88 | version-prefix? |
56b943de | 89 | string-replace-substring |
0fdd3bea | 90 | file-extension |
ac10e0e1 | 91 | file-sans-extension |
da1027a7 | 92 | tarball-sans-extension |
089b1678 | 93 | compressed-file? |
3bb168b0 | 94 | switch-symlinks |
861693f3 | 95 | call-with-temporary-output-file |
db6e5e2b | 96 | call-with-temporary-directory |
04d4c8a4 | 97 | with-atomic-file-output |
f0e492f0 | 98 | |
d67a8819 LC |
99 | with-environment-variables |
100 | arguments-from-environment-variable | |
101 | ||
f0e492f0 | 102 | config-directory |
739ab68b | 103 | cache-directory |
f0e492f0 | 104 | |
d50cb56d | 105 | readlink* |
50a3d594 | 106 | edit-expression |
7a8024a3 LC |
107 | |
108 | filtered-port | |
109 | compressed-port | |
80dea563 | 110 | decompressed-port |
01ac19dc LC |
111 | call-with-decompressed-port |
112 | compressed-output-port | |
c8be6f0d | 113 | call-with-compressed-output-port |
8c348825 | 114 | canonical-newline-port)) |
e3deeebb | 115 | |
38b3122a | 116 | \f |
d67a8819 LC |
117 | ;;; |
118 | ;;; Environment variables. | |
119 | ;;; | |
120 | ||
121 | (define (call-with-environment-variables variables thunk) | |
122 | "Call THUNK with the environment VARIABLES set." | |
123 | (let ((environment (environ))) | |
124 | (dynamic-wind | |
125 | (lambda () | |
126 | (for-each (match-lambda | |
127 | ((variable value) | |
128 | (setenv variable value))) | |
129 | variables)) | |
130 | thunk | |
131 | (lambda () | |
132 | (environ environment))))) | |
133 | ||
134 | (define-syntax-rule (with-environment-variables variables exp ...) | |
135 | "Evaluate EXP with the given environment VARIABLES set." | |
136 | (call-with-environment-variables variables | |
137 | (lambda () exp ...))) | |
138 | ||
139 | (define (arguments-from-environment-variable variable) | |
140 | "Retrieve value of environment variable denoted by string VARIABLE in the | |
141 | form of a list of strings (`char-set:graphic' tokens) suitable for consumption | |
142 | by `args-fold', if VARIABLE is defined, otherwise return an empty list." | |
143 | (let ((env (getenv variable))) | |
144 | (if env | |
145 | (string-tokenize env char-set:graphic) | |
146 | '()))) | |
147 | ||
148 | \f | |
e0fbbc88 LC |
149 | ;;; |
150 | ;;; Filtering & pipes. | |
151 | ;;; | |
152 | ||
153 | (define (filtered-port command input) | |
154 | "Return an input port where data drained from INPUT is filtered through | |
155 | COMMAND (a list). In addition, return a list of PIDs that the caller must | |
101d9f3f LC |
156 | wait. When INPUT is a file port, it must be unbuffered; otherwise, any |
157 | buffered data is lost." | |
e0fbbc88 | 158 | (let loop ((input input) |
443eb4e9 | 159 | (pids '())) |
e0fbbc88 LC |
160 | (if (file-port? input) |
161 | (match (pipe) | |
162 | ((in . out) | |
163 | (match (primitive-fork) | |
164 | (0 | |
443eb4e9 LC |
165 | (dynamic-wind |
166 | (const #f) | |
167 | (lambda () | |
168 | (close-port in) | |
169 | (close-port (current-input-port)) | |
170 | (dup2 (fileno input) 0) | |
171 | (close-port (current-output-port)) | |
172 | (dup2 (fileno out) 1) | |
173 | (catch 'system-error | |
174 | (lambda () | |
175 | (apply execl (car command) command)) | |
176 | (lambda args | |
177 | (format (current-error-port) | |
178 | "filtered-port: failed to execute '~{~a ~}': ~a~%" | |
179 | command (strerror (system-error-errno args)))))) | |
180 | (lambda () | |
181 | (primitive-_exit 1)))) | |
e0fbbc88 LC |
182 | (child |
183 | (close-port out) | |
184 | (values in (cons child pids)))))) | |
185 | ||
186 | ;; INPUT is not a file port, so fork just for the sake of tunneling it | |
187 | ;; through a file port. | |
188 | (match (pipe) | |
189 | ((in . out) | |
190 | (match (primitive-fork) | |
191 | (0 | |
192 | (dynamic-wind | |
193 | (const #t) | |
194 | (lambda () | |
195 | (close-port in) | |
196 | (dump-port input out)) | |
197 | (lambda () | |
5efa0e4d | 198 | (close-port input) |
e0fbbc88 | 199 | (false-if-exception (close out)) |
443eb4e9 | 200 | (primitive-_exit 0)))) |
e0fbbc88 | 201 | (child |
5efa0e4d | 202 | (close-port input) |
e0fbbc88 LC |
203 | (close-port out) |
204 | (loop in (cons child pids))))))))) | |
205 | ||
4e48923e LC |
206 | (define (lzip-port proc port . args) |
207 | "Return the lzip port produced by calling PROC (a symbol) on PORT and ARGS. | |
208 | Raise an error if lzlib support is missing." | |
209 | (let* ((lzlib (false-if-exception (resolve-interface '(guix lzlib)))) | |
210 | (supported? (and lzlib | |
211 | ((module-ref lzlib 'lzlib-available?))))) | |
212 | (if supported? | |
213 | (let ((make-port (module-ref lzlib proc))) | |
214 | (values (make-port port) '())) | |
215 | (error "lzip compression not supported" lzlib)))) | |
216 | ||
7a8024a3 LC |
217 | (define (decompressed-port compression input) |
218 | "Return an input port where INPUT is decompressed according to COMPRESSION, | |
219 | a symbol such as 'xz." | |
220 | (match compression | |
221 | ((or #f 'none) (values input '())) | |
222 | ('bzip2 (filtered-port `(,%bzip2 "-dc") input)) | |
e9be2c54 | 223 | ('xz (filtered-port `(,%xz "-dc") input)) |
7a8024a3 | 224 | ('gzip (filtered-port `(,%gzip "-dc") input)) |
4e48923e LC |
225 | ('lzip (values (lzip-port 'make-lzip-input-port input) |
226 | '())) | |
227 | (_ (error "unsupported compression scheme" compression)))) | |
7a8024a3 LC |
228 | |
229 | (define (compressed-port compression input) | |
4e48923e | 230 | "Return an input port where INPUT is compressed according to COMPRESSION, |
7a8024a3 LC |
231 | a symbol such as 'xz." |
232 | (match compression | |
233 | ((or #f 'none) (values input '())) | |
234 | ('bzip2 (filtered-port `(,%bzip2 "-c") input)) | |
e9be2c54 | 235 | ('xz (filtered-port `(,%xz "-c") input)) |
7a8024a3 | 236 | ('gzip (filtered-port `(,%gzip "-c") input)) |
4e48923e LC |
237 | ('lzip (values (lzip-port 'make-lzip-input-port/compressed input) |
238 | '())) | |
239 | (_ (error "unsupported compression scheme" compression)))) | |
7a8024a3 | 240 | |
01ac19dc LC |
241 | (define (call-with-decompressed-port compression port proc) |
242 | "Call PROC with a wrapper around PORT, a file port, that decompresses data | |
30ce8012 | 243 | read from PORT according to COMPRESSION, a symbol such as 'xz." |
01ac19dc LC |
244 | (let-values (((decompressed pids) |
245 | (decompressed-port compression port))) | |
246 | (dynamic-wind | |
247 | (const #f) | |
248 | (lambda () | |
01ac19dc LC |
249 | (proc decompressed)) |
250 | (lambda () | |
251 | (close-port decompressed) | |
252 | (unless (every (compose zero? cdr waitpid) pids) | |
253 | (error "decompressed-port failure" pids)))))) | |
254 | ||
80dea563 LC |
255 | (define (filtered-output-port command output) |
256 | "Return an output port. Data written to that port is filtered through | |
257 | COMMAND and written to OUTPUT, an output file port. In addition, return a | |
258 | list of PIDs to wait for. OUTPUT must be unbuffered; otherwise, any buffered | |
259 | data is lost." | |
260 | (match (pipe) | |
261 | ((in . out) | |
262 | (match (primitive-fork) | |
263 | (0 | |
264 | (dynamic-wind | |
265 | (const #f) | |
266 | (lambda () | |
267 | (close-port out) | |
268 | (close-port (current-input-port)) | |
269 | (dup2 (fileno in) 0) | |
270 | (close-port (current-output-port)) | |
271 | (dup2 (fileno output) 1) | |
272 | (catch 'system-error | |
273 | (lambda () | |
274 | (apply execl (car command) command)) | |
275 | (lambda args | |
276 | (format (current-error-port) | |
277 | "filtered-output-port: failed to execute '~{~a ~}': ~a~%" | |
278 | command (strerror (system-error-errno args)))))) | |
279 | (lambda () | |
280 | (primitive-_exit 1)))) | |
281 | (child | |
282 | (close-port in) | |
283 | (values out (list child))))))) | |
284 | ||
62d2b571 LC |
285 | (define* (compressed-output-port compression output |
286 | #:key (options '())) | |
80dea563 LC |
287 | "Return an output port whose input is compressed according to COMPRESSION, |
288 | a symbol such as 'xz, and then written to OUTPUT. In addition return a list | |
62d2b571 LC |
289 | of PIDs to wait for. OPTIONS is a list of strings passed to the compression |
290 | program--e.g., '(\"--fast\")." | |
80dea563 LC |
291 | (match compression |
292 | ((or #f 'none) (values output '())) | |
62d2b571 | 293 | ('bzip2 (filtered-output-port `(,%bzip2 "-c" ,@options) output)) |
e9be2c54 | 294 | ('xz (filtered-output-port `(,%xz "-c" ,@options) output)) |
62d2b571 | 295 | ('gzip (filtered-output-port `(,%gzip "-c" ,@options) output)) |
4e48923e LC |
296 | ('lzip (values (lzip-port 'make-lzip-output-port output) |
297 | '())) | |
298 | (_ (error "unsupported compression scheme" compression)))) | |
80dea563 | 299 | |
62d2b571 LC |
300 | (define* (call-with-compressed-output-port compression port proc |
301 | #:key (options '())) | |
01ac19dc | 302 | "Call PROC with a wrapper around PORT, a file port, that compresses data |
62d2b571 LC |
303 | that goes to PORT according to COMPRESSION, a symbol such as 'xz. OPTIONS is |
304 | a list of command-line arguments passed to the compression program." | |
01ac19dc | 305 | (let-values (((compressed pids) |
62d2b571 LC |
306 | (compressed-output-port compression port |
307 | #:options options))) | |
01ac19dc LC |
308 | (dynamic-wind |
309 | (const #f) | |
310 | (lambda () | |
01ac19dc LC |
311 | (proc compressed)) |
312 | (lambda () | |
313 | (close-port compressed) | |
314 | (unless (every (compose zero? cdr waitpid) pids) | |
315 | (error "compressed-output-port failure" pids)))))) | |
316 | ||
50a3d594 SB |
317 | (define* (edit-expression source-properties proc #:key (encoding "UTF-8")) |
318 | "Edit the expression specified by SOURCE-PROPERTIES using PROC, which should | |
319 | be a procedure that takes the original expression in string and returns a new | |
320 | one. ENCODING will be used to interpret all port I/O, it default to UTF-8. | |
321 | This procedure returns #t on success." | |
322 | (with-fluids ((%default-port-encoding encoding)) | |
323 | (let* ((file (assq-ref source-properties 'filename)) | |
324 | (line (assq-ref source-properties 'line)) | |
325 | (column (assq-ref source-properties 'column)) | |
326 | (in (open-input-file file)) | |
327 | ;; The start byte position of the expression. | |
328 | (start (begin (while (not (and (= line (port-line in)) | |
329 | (= column (port-column in)))) | |
330 | (when (eof-object? (read-char in)) | |
331 | (error (format #f "~a: end of file~%" in)))) | |
332 | (ftell in))) | |
333 | ;; The end byte position of the expression. | |
334 | (end (begin (read in) (ftell in)))) | |
335 | (seek in 0 SEEK_SET) ; read from the beginning of the file. | |
336 | (let* ((pre-bv (get-bytevector-n in start)) | |
337 | ;; The expression in string form. | |
31044751 | 338 | (str (iconv:bytevector->string |
50a3d594 SB |
339 | (get-bytevector-n in (- end start)) |
340 | (port-encoding in))) | |
341 | (post-bv (get-bytevector-all in)) | |
342 | (str* (proc str))) | |
343 | ;; Verify the edited expression is still a scheme expression. | |
344 | (call-with-input-string str* read) | |
345 | ;; Update the file with edited expression. | |
346 | (with-atomic-file-output file | |
347 | (lambda (out) | |
348 | (put-bytevector out pre-bv) | |
349 | (display str* out) | |
350 | ;; post-bv maybe the end-of-file object. | |
351 | (when (not (eof-object? post-bv)) | |
352 | (put-bytevector out post-bv)) | |
353 | #t)))))) | |
354 | ||
e0fbbc88 | 355 | \f |
de4c3f26 | 356 | ;;; |
958dd3ce | 357 | ;;; Keyword arguments. |
de4c3f26 LC |
358 | ;;; |
359 | ||
5e110382 LC |
360 | (define (strip-keyword-arguments keywords args) |
361 | "Remove all of the keyword arguments listed in KEYWORDS from ARGS." | |
362 | (let loop ((args args) | |
363 | (result '())) | |
364 | (match args | |
365 | (() | |
366 | (reverse result)) | |
367 | (((? keyword? kw) arg . rest) | |
368 | (loop rest | |
369 | (if (memq kw keywords) | |
370 | result | |
371 | (cons* arg kw result)))) | |
372 | ((head . tail) | |
373 | (loop tail (cons head result)))))) | |
374 | ||
0af2c24e LC |
375 | (define (default-keyword-arguments args defaults) |
376 | "Return ARGS augmented with any keyword/value from DEFAULTS for | |
377 | keywords not already present in ARGS." | |
378 | (let loop ((defaults defaults) | |
379 | (args args)) | |
380 | (match defaults | |
381 | ((kw value rest ...) | |
382 | (loop rest | |
347df601 | 383 | (if (memq kw args) |
0af2c24e LC |
384 | args |
385 | (cons* kw value args)))) | |
386 | (() | |
387 | args)))) | |
388 | ||
b8b129eb EB |
389 | (define-syntax collect-default-args |
390 | (syntax-rules () | |
391 | ((_) | |
392 | '()) | |
393 | ((_ (_ _) rest ...) | |
394 | (collect-default-args rest ...)) | |
395 | ((_ (kw _ dflt) rest ...) | |
396 | (cons* kw dflt (collect-default-args rest ...))))) | |
397 | ||
0af2c24e LC |
398 | (define-syntax substitute-keyword-arguments |
399 | (syntax-rules () | |
400 | "Return a new list of arguments where the value for keyword arg KW is | |
b8b129eb EB |
401 | replaced by EXP. EXP is evaluated in a context where VAR is bound to the |
402 | previous value of the keyword argument, or DFLT if given." | |
403 | ((_ original-args ((kw var dflt ...) exp) ...) | |
404 | (let loop ((args (default-keyword-arguments | |
405 | original-args | |
406 | (collect-default-args (kw var dflt ...) ...))) | |
0af2c24e LC |
407 | (before '())) |
408 | (match args | |
409 | ((kw var rest (... ...)) | |
410 | (loop rest (cons* exp kw before))) | |
411 | ... | |
412 | ((x rest (... ...)) | |
413 | (loop rest (cons x before))) | |
414 | (() | |
415 | (reverse before))))))) | |
416 | ||
6071122b LC |
417 | (define (delkw kw lst) |
418 | "Remove KW and its associated value from LST, a keyword/value list such | |
419 | as '(#:foo 1 #:bar 2)." | |
420 | (let loop ((lst lst) | |
421 | (result '())) | |
422 | (match lst | |
423 | (() | |
424 | (reverse result)) | |
425 | ((kw? value rest ...) | |
426 | (if (eq? kw? kw) | |
427 | (append (reverse result) rest) | |
428 | (loop rest (cons* value kw? result))))))) | |
429 | ||
430 | (define (ensure-keyword-arguments args kw/values) | |
431 | "Force the keywords arguments KW/VALUES in the keyword argument list ARGS. | |
432 | For instance: | |
433 | ||
434 | (ensure-keyword-arguments '(#:foo 2) '(#:foo 2)) | |
435 | => (#:foo 2) | |
436 | ||
437 | (ensure-keyword-arguments '(#:foo 2) '(#:bar 3)) | |
438 | => (#:foo 2 #:bar 3) | |
439 | ||
440 | (ensure-keyword-arguments '(#:foo 2) '(#:bar 3 #:foo 42)) | |
441 | => (#:foo 42 #:bar 3) | |
442 | " | |
443 | (let loop ((args args) | |
444 | (kw/values kw/values) | |
445 | (result '())) | |
446 | (match args | |
447 | (() | |
448 | (append (reverse result) kw/values)) | |
449 | ((kw value rest ...) | |
450 | (match (memq kw kw/values) | |
451 | ((_ value . _) | |
452 | (loop rest (delkw kw kw/values) (cons* value kw result))) | |
453 | (#f | |
454 | (loop rest kw/values (cons* value kw result)))))))) | |
455 | ||
958dd3ce LC |
456 | \f |
457 | ;;; | |
458 | ;;; System strings. | |
459 | ;;; | |
460 | ||
8eb80484 MW |
461 | (define* (nix-system->gnu-triplet |
462 | #:optional (system (%current-system)) (vendor "unknown")) | |
463 | "Return a guess of the GNU triplet corresponding to Nix system | |
464 | identifier SYSTEM." | |
3f00ff8b MW |
465 | (match system |
466 | ("armhf-linux" | |
467 | (string-append "arm-" vendor "-linux-gnueabihf")) | |
468 | (_ | |
469 | (let* ((dash (string-index system #\-)) | |
470 | (arch (substring system 0 dash)) | |
471 | (os (substring system (+ 1 dash)))) | |
472 | (string-append arch | |
473 | "-" vendor "-" | |
474 | (if (string=? os "linux") | |
475 | "linux-gnu" | |
476 | os)))))) | |
8eb80484 | 477 | |
98090557 LC |
478 | (define (gnu-triplet->nix-system triplet) |
479 | "Return the Nix system type corresponding to TRIPLET, a GNU triplet as | |
480 | returned by `config.guess'." | |
481 | (let ((triplet (cond ((string-match "^i[345]86-(.*)$" triplet) | |
482 | => | |
483 | (lambda (m) | |
484 | (string-append "i686-" (match:substring m 1)))) | |
485 | (else triplet)))) | |
3f00ff8b MW |
486 | (cond ((string-match "^arm[^-]*-([^-]+-)?linux-gnueabihf" triplet) |
487 | "armhf-linux") | |
488 | ((string-match "^([^-]+)-([^-]+-)?linux-gnu.*" triplet) | |
98090557 LC |
489 | => |
490 | (lambda (m) | |
491 | ;; Nix omits `-gnu' for GNU/Linux. | |
492 | (string-append (match:substring m 1) "-linux"))) | |
493 | ((string-match "^([^-]+)-([^-]+-)?([[:alpha:]]+)([0-9]+\\.?)*$" triplet) | |
494 | => | |
495 | (lambda (m) | |
496 | ;; Nix strip the version number from names such as `gnu0.3', | |
497 | ;; `darwin10.2.0', etc., and always strips the vendor part. | |
498 | (string-append (match:substring m 1) "-" | |
499 | (match:substring m 3)))) | |
500 | (else triplet)))) | |
501 | ||
502 | (define %current-system | |
503 | ;; System type as expected by Nix, usually ARCHITECTURE-KERNEL. | |
d8eea3d2 LC |
504 | ;; By default, this is equal to (gnu-triplet->nix-system %host-type). |
505 | (make-parameter %system)) | |
ff352cfb | 506 | |
9c1edabd LC |
507 | (define %current-target-system |
508 | ;; Either #f or a GNU triplet representing the target system we are | |
509 | ;; cross-building to. | |
510 | (make-parameter #f)) | |
511 | ||
aa042770 LC |
512 | (define* (package-name->name+version spec |
513 | #:optional (delimiter #\@)) | |
1b846da8 ML |
514 | "Given SPEC, a package name like \"foo@0.9.1b\", return two values: \"foo\" |
515 | and \"0.9.1b\". When the version part is unavailable, SPEC and #f are | |
aa042770 LC |
516 | returned. Both parts must not contain any '@'. Optionally, DELIMITER can be |
517 | a character other than '@'." | |
518 | (match (string-rindex spec delimiter) | |
1b846da8 ML |
519 | (#f (values spec #f)) |
520 | (idx (values (substring spec 0 idx) | |
521 | (substring spec (1+ idx)))))) | |
522 | ||
cba36e64 JN |
523 | (define* (target-mingw? #:optional (target (%current-target-system))) |
524 | (and target | |
525 | (string-suffix? "-mingw32" target))) | |
526 | ||
300a54bb LC |
527 | (define* (target-arm32? #:optional (target (or (%current-target-system) |
528 | (%current-system)))) | |
529 | (string-prefix? "arm" target)) | |
e45b573c | 530 | |
300a54bb LC |
531 | (define* (target-aarch64? #:optional (target (or (%current-target-system) |
532 | (%current-system)))) | |
533 | (string-prefix? "aarch64" target)) | |
74f17180 | 534 | |
300a54bb LC |
535 | (define* (target-arm? #:optional (target (or (%current-target-system) |
536 | (%current-system)))) | |
537 | (or (target-arm32? target) (target-aarch64? target))) | |
74f17180 | 538 | |
300a54bb LC |
539 | (define* (target-64bit? #:optional (system (or (%current-target-system) |
540 | (%current-system)))) | |
541 | (any (cut string-prefix? <> system) '("x86_64" "aarch64" "mips64" "ppc64"))) | |
259341cf | 542 | |
fb9a57a8 MB |
543 | (define* (cc-for-target #:optional (target (%current-target-system))) |
544 | (if target | |
545 | (string-append target "-gcc") | |
546 | "gcc")) | |
547 | ||
0d1e6ce4 MW |
548 | (define version-compare |
549 | (let ((strverscmp | |
550 | (let ((sym (or (dynamic-func "strverscmp" (dynamic-link)) | |
551 | (error "could not find `strverscmp' (from GNU libc)")))) | |
552 | (pointer->procedure int sym (list '* '*))))) | |
553 | (lambda (a b) | |
554 | "Return '> when A denotes a newer version than B, | |
555 | '< when A denotes a older version than B, | |
556 | or '= when they denote equal versions." | |
557 | (let ((result (strverscmp (string->pointer a) (string->pointer b)))) | |
558 | (cond ((positive? result) '>) | |
559 | ((negative? result) '<) | |
560 | (else '=)))))) | |
561 | ||
29a7c98a ID |
562 | (define (version-prefix version-string num-parts) |
563 | "Truncate version-string to the first num-parts components of the version. | |
564 | For example, (version-prefix \"2.1.47.4.23\" 3) returns \"2.1.47\"" | |
565 | (string-join (take (string-split version-string #\.) num-parts) ".")) | |
566 | ||
567 | ||
568 | (define (version-major+minor version-string) | |
569 | "Return \"<major>.<minor>\", where major and minor are the major and | |
570 | minor version numbers from version-string." | |
571 | (version-prefix version-string 2)) | |
572 | ||
47dc9a0d | 573 | (define (version-major version-string) |
574 | "Return the major version number as string from the version-string." | |
575 | (version-prefix version-string 1)) | |
576 | ||
0d1e6ce4 | 577 | (define (version>? a b) |
cde1e967 | 578 | "Return #t when A denotes a version strictly newer than B." |
0d1e6ce4 MW |
579 | (eq? '> (version-compare a b))) |
580 | ||
cde1e967 LC |
581 | (define (version>=? a b) |
582 | "Return #t when A denotes a version newer or equal to B." | |
583 | (case (version-compare a b) | |
584 | ((> =) #t) | |
585 | (else #f))) | |
586 | ||
7db3ff4a LC |
587 | (define (guile-version>? str) |
588 | "Return #t if the running Guile version is greater than STR." | |
589 | ;; Note: Using (version>? (version) "2.0.5") or similar doesn't work, | |
590 | ;; because the result of (version) can have a prefix, like "2.0.5-deb1". | |
591 | (version>? (string-append (major-version) "." | |
592 | (minor-version) "." | |
593 | (micro-version)) | |
594 | str)) | |
595 | ||
437f62f0 LC |
596 | (define version-prefix? |
597 | (let ((not-dot (char-set-complement (char-set #\.)))) | |
598 | (lambda (v1 v2) | |
599 | "Return true if V1 is a version prefix of V2: | |
600 | ||
601 | (version-prefix? \"4.1\" \"4.16.2\") => #f | |
602 | (version-prefix? \"4.1\" \"4.1.2\") => #t | |
603 | " | |
604 | (define (list-prefix? lst1 lst2) | |
605 | (match lst1 | |
606 | (() #t) | |
607 | ((head1 tail1 ...) | |
608 | (match lst2 | |
609 | (() #f) | |
610 | ((head2 tail2 ...) | |
611 | (and (equal? head1 head2) | |
612 | (list-prefix? tail1 tail2))))))) | |
613 | ||
614 | (list-prefix? (string-tokenize v1 not-dot) | |
615 | (string-tokenize v2 not-dot))))) | |
616 | ||
d67a8819 LC |
617 | \f |
618 | ;;; | |
619 | ;;; Files. | |
620 | ;;; | |
621 | ||
0fdd3bea LC |
622 | (define (file-extension file) |
623 | "Return the extension of FILE or #f if there is none." | |
624 | (let ((dot (string-rindex file #\.))) | |
625 | (and dot (substring file (+ 1 dot) (string-length file))))) | |
626 | ||
ac10e0e1 LC |
627 | (define (file-sans-extension file) |
628 | "Return the substring of FILE without its extension, if any." | |
629 | (let ((dot (string-rindex file #\.))) | |
630 | (if dot | |
631 | (substring file 0 dot) | |
632 | file))) | |
633 | ||
da1027a7 HG |
634 | (define (tarball-sans-extension tarball) |
635 | "Return TARBALL without its .tar.* or .zip extension." | |
636 | (let ((end (or (string-contains tarball ".tar") | |
637 | (string-contains tarball ".zip")))) | |
638 | (substring tarball 0 end))) | |
639 | ||
089b1678 LC |
640 | (define (compressed-file? file) |
641 | "Return true if FILE denotes a compressed file." | |
642 | (->bool (member (file-extension file) | |
f4111243 | 643 | '("gz" "bz2" "xz" "lz" "lzma" "tgz" "tbz2" "zip")))) |
089b1678 | 644 | |
3bb168b0 LC |
645 | (define (switch-symlinks link target) |
646 | "Atomically switch LINK, a symbolic link, to point to TARGET. Works | |
647 | both when LINK already exists and when it does not." | |
648 | (let ((pivot (string-append link ".new"))) | |
649 | (symlink target pivot) | |
650 | (rename-file pivot link))) | |
651 | ||
56b943de LC |
652 | (define* (string-replace-substring str substr replacement |
653 | #:optional | |
654 | (start 0) | |
655 | (end (string-length str))) | |
656 | "Replace all occurrences of SUBSTR in the START--END range of STR by | |
657 | REPLACEMENT." | |
658 | (match (string-length substr) | |
659 | (0 | |
660 | (error "string-replace-substring: empty substring")) | |
661 | (substr-length | |
662 | (let loop ((start start) | |
663 | (pieces (list (substring str 0 start)))) | |
664 | (match (string-contains str substr start end) | |
665 | (#f | |
666 | (string-concatenate-reverse | |
667 | (cons (substring str start) pieces))) | |
668 | (index | |
669 | (loop (+ index substr-length) | |
670 | (cons* replacement | |
671 | (substring str start index) | |
672 | pieces)))))))) | |
673 | ||
861693f3 LC |
674 | (define (call-with-temporary-output-file proc) |
675 | "Call PROC with a name of a temporary file and open output port to that | |
676 | file; close the file and delete it when leaving the dynamic extent of this | |
677 | call." | |
57db49cc LC |
678 | (let* ((directory (or (getenv "TMPDIR") "/tmp")) |
679 | (template (string-append directory "/guix-file.XXXXXX")) | |
680 | (out (mkstemp! template))) | |
861693f3 LC |
681 | (dynamic-wind |
682 | (lambda () | |
683 | #t) | |
684 | (lambda () | |
685 | (proc template out)) | |
686 | (lambda () | |
687 | (false-if-exception (close out)) | |
688 | (false-if-exception (delete-file template)))))) | |
04d4c8a4 | 689 | |
db6e5e2b DT |
690 | (define (call-with-temporary-directory proc) |
691 | "Call PROC with a name of a temporary directory; close the directory and | |
692 | delete it when leaving the dynamic extent of this call." | |
693 | (let* ((directory (or (getenv "TMPDIR") "/tmp")) | |
694 | (template (string-append directory "/guix-directory.XXXXXX")) | |
695 | (tmp-dir (mkdtemp! template))) | |
696 | (dynamic-wind | |
697 | (const #t) | |
698 | (lambda () | |
699 | (proc tmp-dir)) | |
700 | (lambda () | |
27f7cbc9 | 701 | (false-if-exception (delete-file-recursively tmp-dir)))))) |
db6e5e2b | 702 | |
04d4c8a4 LC |
703 | (define (with-atomic-file-output file proc) |
704 | "Call PROC with an output port for the file that is going to replace FILE. | |
705 | Upon success, FILE is atomically replaced by what has been written to the | |
706 | output port, and PROC's result is returned." | |
707 | (let* ((template (string-append file ".XXXXXX")) | |
708 | (out (mkstemp! template))) | |
709 | (with-throw-handler #t | |
710 | (lambda () | |
711 | (let ((result (proc out))) | |
1752a17a LC |
712 | (fdatasync out) |
713 | (close-port out) | |
04d4c8a4 LC |
714 | (rename-file template file) |
715 | result)) | |
716 | (lambda (key . args) | |
c25637df LC |
717 | (false-if-exception (delete-file template)) |
718 | (close-port out))))) | |
861693f3 | 719 | |
f0e492f0 LC |
720 | (define* (xdg-directory variable suffix #:key (ensure? #t)) |
721 | "Return the name of the XDG directory that matches VARIABLE and SUFFIX, | |
722 | after making sure that it exists if ENSURE? is true. VARIABLE is an | |
723 | environment variable name like \"XDG_CONFIG_HOME\"; SUFFIX is a suffix like | |
724 | \"/.config\". Honor the XDG specs, | |
725 | <http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html>." | |
726 | (let ((dir (and=> (or (getenv variable) | |
727 | (and=> (or (getenv "HOME") | |
728 | (passwd:dir (getpwuid (getuid)))) | |
729 | (cut string-append <> suffix))) | |
730 | (cut string-append <> "/guix")))) | |
731 | (when ensure? | |
732 | (mkdir-p dir)) | |
733 | dir)) | |
734 | ||
735 | (define config-directory | |
736 | (cut xdg-directory "XDG_CONFIG_HOME" "/.config" <...>)) | |
737 | ||
738 | (define cache-directory | |
739 | (cut xdg-directory "XDG_CACHE_HOME" "/.cache" <...>)) | |
739ab68b | 740 | |
d50cb56d LC |
741 | (define (readlink* file) |
742 | "Call 'readlink' until the result is not a symlink." | |
743 | (define %max-symlink-depth 50) | |
744 | ||
745 | (let loop ((file file) | |
746 | (depth 0)) | |
747 | (define (absolute target) | |
748 | (if (absolute-file-name? target) | |
749 | target | |
750 | (string-append (dirname file) "/" target))) | |
751 | ||
752 | (if (>= depth %max-symlink-depth) | |
753 | file | |
754 | (call-with-values | |
755 | (lambda () | |
756 | (catch 'system-error | |
757 | (lambda () | |
758 | (values #t (readlink file))) | |
759 | (lambda args | |
760 | (let ((errno (system-error-errno args))) | |
761 | (if (or (= errno EINVAL)) | |
762 | (values #f file) | |
763 | (apply throw args)))))) | |
764 | (lambda (success? target) | |
765 | (if success? | |
766 | (loop (absolute target) (+ depth 1)) | |
767 | file)))))) | |
c8be6f0d FB |
768 | |
769 | (define (canonical-newline-port port) | |
770 | "Return an input port that wraps PORT such that all newlines consist | |
3149c002 | 771 | of a single linefeed." |
c8be6f0d FB |
772 | (define (get-position) |
773 | (if (port-has-port-position? port) (port-position port) #f)) | |
774 | (define (set-position! position) | |
775 | (if (port-has-set-port-position!? port) | |
776 | (set-port-position! position port) | |
777 | #f)) | |
778 | (define (close) (close-port port)) | |
779 | (define (read! bv start n) | |
780 | (let loop ((count 0) | |
781 | (byte (get-u8 port))) | |
782 | (cond ((eof-object? byte) count) | |
3149c002 RV |
783 | ;; XXX: consume all CRs even if not followed by LF. |
784 | ((eqv? byte (char->integer #\return)) (loop count (get-u8 port))) | |
c8be6f0d FB |
785 | ((= count (- n 1)) |
786 | (bytevector-u8-set! bv (+ start count) byte) | |
787 | n) | |
c8be6f0d FB |
788 | (else |
789 | (bytevector-u8-set! bv (+ start count) byte) | |
790 | (loop (+ count 1) (get-u8 port)))))) | |
791 | (make-custom-binary-input-port "canonical-newline-port" | |
792 | read! | |
793 | get-position | |
794 | set-position! | |
795 | close)) | |
ff352cfb LC |
796 | \f |
797 | ;;; | |
798 | ;;; Source location. | |
799 | ;;; | |
800 | ||
87b711d2 LC |
801 | (define absolute-dirname |
802 | ;; Memoize to avoid repeated 'stat' storms from 'search-path'. | |
803 | (mlambda (file) | |
804 | "Return the absolute name of the directory containing FILE, or #f upon | |
cbbbb7be | 805 | failure." |
87b711d2 LC |
806 | (match (search-path %load-path file) |
807 | (#f #f) | |
808 | ((? string? file) | |
809 | ;; If there are relative names in %LOAD-PATH, FILE can be relative and | |
810 | ;; needs to be canonicalized. | |
811 | (if (string-prefix? "/" file) | |
812 | (dirname file) | |
813 | (canonicalize-path (dirname file))))))) | |
cbbbb7be | 814 | |
5dbae738 LC |
815 | (define-syntax current-source-directory |
816 | (lambda (s) | |
d4dd37fc LC |
817 | "Return the absolute name of the current directory, or #f if it could not |
818 | be determined." | |
5dbae738 LC |
819 | (syntax-case s () |
820 | ((_) | |
82781d87 | 821 | (match (assq 'filename (or (syntax-source s) '())) |
5dbae738 | 822 | (('filename . (? string? file-name)) |
d4dd37fc | 823 | ;; If %FILE-PORT-NAME-CANONICALIZATION is 'relative, then FILE-NAME |
cbbbb7be LC |
824 | ;; can be relative. In that case, we try to find out at run time |
825 | ;; the absolute file name by looking at %LOAD-PATH; doing this at | |
826 | ;; run time rather than expansion time is necessary to allow files | |
827 | ;; to be moved on the file system. | |
b997d432 AS |
828 | (if (string-prefix? "/" file-name) |
829 | (dirname file-name) | |
830 | #`(absolute-dirname #,file-name))) | |
831 | ((or ('filename . #f) #f) | |
832 | ;; raising an error would upset Geiser users | |
5dbae738 | 833 | #f)))))) |
07c8a98c | 834 | |
79864851 SB |
835 | ;;; Local Variables: |
836 | ;;; eval: (put 'call-with-progress-reporter 'scheme-indent-function 1) | |
837 | ;;; End: |