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233e7676 LC |
1 | ;;; GNU Guix --- Functional package management for GNU |
2 | ;;; Copyright © 2012, 2013 Ludovic Courtès <ludo@gnu.org> | |
e49951eb | 3 | ;;; Copyright © 2013 Mark H Weaver <mhw@netris.org> |
98eb8cbe | 4 | ;;; Copyright © 2013 Nikita Karetnikov <nikita@karetnikov.org> |
073c34d7 | 5 | ;;; |
233e7676 | 6 | ;;; This file is part of GNU Guix. |
073c34d7 | 7 | ;;; |
233e7676 | 8 | ;;; GNU Guix is free software; you can redistribute it and/or modify it |
073c34d7 LC |
9 | ;;; under the terms of the GNU General Public License as published by |
10 | ;;; the Free Software Foundation; either version 3 of the License, or (at | |
11 | ;;; your option) any later version. | |
12 | ;;; | |
233e7676 | 13 | ;;; GNU Guix is distributed in the hope that it will be useful, but |
073c34d7 LC |
14 | ;;; WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | ;;; GNU General Public License for more details. | |
17 | ;;; | |
18 | ;;; You should have received a copy of the GNU General Public License | |
233e7676 | 19 | ;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>. |
073c34d7 LC |
20 | |
21 | (define-module (guix ui) | |
22 | #:use-module (guix utils) | |
23 | #:use-module (guix store) | |
cdd5d6f9 | 24 | #:use-module (guix config) |
073c34d7 | 25 | #:use-module (guix packages) |
9b222abe | 26 | #:use-module (guix build-system) |
9bb2b96a | 27 | #:use-module (guix derivations) |
299112d3 LC |
28 | #:use-module ((guix licenses) #:select (license? license-name)) |
29 | #:use-module (srfi srfi-1) | |
30 | #:use-module (srfi srfi-11) | |
2cd09108 | 31 | #:use-module (srfi srfi-19) |
073c34d7 LC |
32 | #:use-module (srfi srfi-26) |
33 | #:use-module (srfi srfi-34) | |
a5975ced | 34 | #:use-module (srfi srfi-37) |
e31ff8b8 | 35 | #:autoload (ice-9 ftw) (scandir) |
64fc89b6 | 36 | #:use-module (ice-9 match) |
9bb2b96a | 37 | #:use-module (ice-9 format) |
2cd09108 | 38 | #:use-module (ice-9 regex) |
073c34d7 LC |
39 | #:export (_ |
40 | N_ | |
41 | leave | |
cdd5d6f9 | 42 | show-version-and-exit |
3441e164 | 43 | show-bug-report-information |
969e678e | 44 | string->number* |
9bb2b96a | 45 | show-what-to-build |
073c34d7 | 46 | call-with-error-handling |
64fc89b6 | 47 | with-error-handling |
eb0880e7 | 48 | read/eval-package-expression |
299112d3 | 49 | location->string |
c61b026e | 50 | switch-symlinks |
f651b477 | 51 | config-directory |
299112d3 LC |
52 | fill-paragraph |
53 | string->recutils | |
e49951eb | 54 | package->recutils |
2cd09108 NK |
55 | string->generations |
56 | string->duration | |
a5975ced | 57 | args-fold* |
e49951eb | 58 | run-guix-command |
a2011be5 LC |
59 | program-name |
60 | guix-warning-port | |
61 | warning | |
e49951eb | 62 | guix-main)) |
073c34d7 LC |
63 | |
64 | ;;; Commentary: | |
65 | ;;; | |
66 | ;;; User interface facilities for command-line tools. | |
67 | ;;; | |
68 | ;;; Code: | |
69 | ||
70 | (define %gettext-domain | |
71 | "guix") | |
72 | ||
73 | (define _ (cut gettext <> %gettext-domain)) | |
74 | (define N_ (cut ngettext <> <> <> %gettext-domain)) | |
75 | ||
b2a886f6 LC |
76 | (define-syntax-rule (define-diagnostic name prefix) |
77 | "Create a diagnostic macro (i.e., NAME), which will prepend PREFIX to all | |
78 | messages." | |
79 | (define-syntax name | |
80 | (lambda (x) | |
81 | (define (augmented-format-string fmt) | |
82 | (string-append "~:[~*~;guix ~a: ~]~a" (syntax->datum fmt))) | |
83 | ||
89d02b98 LC |
84 | (syntax-case x () |
85 | ((name (underscore fmt) args (... ...)) | |
86 | (and (string? (syntax->datum #'fmt)) | |
87 | (free-identifier=? #'underscore #'_)) | |
b2a886f6 LC |
88 | (with-syntax ((fmt* (augmented-format-string #'fmt)) |
89 | (prefix (datum->syntax x prefix))) | |
90 | #'(format (guix-warning-port) (gettext fmt*) | |
91 | (program-name) (program-name) prefix | |
92 | args (... ...)))) | |
89d02b98 | 93 | ((name (N-underscore singular plural n) args (... ...)) |
b2a886f6 | 94 | (and (string? (syntax->datum #'singular)) |
89d02b98 LC |
95 | (string? (syntax->datum #'plural)) |
96 | (free-identifier=? #'N-underscore #'N_)) | |
b2a886f6 LC |
97 | (with-syntax ((s (augmented-format-string #'singular)) |
98 | (p (augmented-format-string #'plural)) | |
99 | (prefix (datum->syntax x prefix))) | |
100 | #'(format (guix-warning-port) | |
101 | (ngettext s p n %gettext-domain) | |
102 | (program-name) (program-name) prefix | |
103 | args (... ...)))))))) | |
104 | ||
105 | (define-diagnostic warning "warning: ") ; emit a warning | |
106 | ||
107 | (define-diagnostic report-error "error: ") | |
108 | (define-syntax-rule (leave args ...) | |
109 | "Emit an error message and exit." | |
110 | (begin | |
111 | (report-error args ...) | |
112 | (exit 1))) | |
113 | ||
114 | (define (install-locale) | |
115 | "Install the current locale settings." | |
116 | (catch 'system-error | |
117 | (lambda _ | |
118 | (setlocale LC_ALL "")) | |
119 | (lambda args | |
120 | (warning (_ "failed to install locale: ~a~%") | |
121 | (strerror (system-error-errno args)))))) | |
122 | ||
e49951eb | 123 | (define (initialize-guix) |
633f045f | 124 | "Perform the usual initialization for stand-alone Guix commands." |
e49951eb | 125 | (install-locale) |
39e9f95d | 126 | (textdomain %gettext-domain) |
e14c3929 LC |
127 | |
128 | ;; Ignore SIGPIPE. If the daemon closes the connection, we prefer to be | |
129 | ;; notified via an EPIPE later. | |
130 | (sigaction SIGPIPE SIG_IGN) | |
131 | ||
e49951eb MW |
132 | (setvbuf (current-output-port) _IOLBF) |
133 | (setvbuf (current-error-port) _IOLBF)) | |
134 | ||
cdd5d6f9 LC |
135 | (define* (show-version-and-exit #:optional (command (car (command-line)))) |
136 | "Display version information for COMMAND and `(exit 0)'." | |
137 | (simple-format #t "~a (~a) ~a~%" | |
138 | command %guix-package-name %guix-version) | |
139 | (exit 0)) | |
140 | ||
3441e164 LC |
141 | (define (show-bug-report-information) |
142 | (format #t (_ " | |
143 | Report bugs to: ~a.") %guix-bug-report-address) | |
144 | (format #t (_ " | |
145 | ~a home page: <~a>") %guix-package-name %guix-home-page-url) | |
146 | (display (_ " | |
147 | General help using GNU software: <http://www.gnu.org/gethelp/>")) | |
148 | (newline)) | |
149 | ||
969e678e LC |
150 | (define (string->number* str) |
151 | "Like `string->number', but error out with an error message on failure." | |
152 | (or (string->number str) | |
153 | (leave (_ "~a: invalid number~%") str))) | |
154 | ||
073c34d7 LC |
155 | (define (call-with-error-handling thunk) |
156 | "Call THUNK within a user-friendly error handler." | |
157 | (guard (c ((package-input-error? c) | |
158 | (let* ((package (package-error-package c)) | |
159 | (input (package-error-invalid-input c)) | |
160 | (location (package-location package)) | |
161 | (file (location-file location)) | |
162 | (line (location-line location)) | |
163 | (column (location-column location))) | |
98eb8cbe | 164 | (leave (_ "~a:~a:~a: package `~a' has an invalid input: ~s~%") |
073c34d7 LC |
165 | file line column |
166 | (package-full-name package) input))) | |
9b222abe LC |
167 | ((package-cross-build-system-error? c) |
168 | (let* ((package (package-error-package c)) | |
169 | (loc (package-location package)) | |
170 | (system (package-build-system package))) | |
171 | (leave (_ "~a: ~a: build system `~a' does not support cross builds~%") | |
172 | (location->string loc) | |
173 | (package-full-name package) | |
174 | (build-system-name system)))) | |
ef86c39f | 175 | ((nix-connection-error? c) |
98eb8cbe | 176 | (leave (_ "failed to connect to `~a': ~a~%") |
ef86c39f LC |
177 | (nix-connection-error-file c) |
178 | (strerror (nix-connection-error-code c)))) | |
073c34d7 LC |
179 | ((nix-protocol-error? c) |
180 | ;; FIXME: Server-provided error messages aren't i18n'd. | |
98eb8cbe | 181 | (leave (_ "build failed: ~a~%") |
073c34d7 | 182 | (nix-protocol-error-message c)))) |
e14c3929 LC |
183 | ;; Catch EPIPE and the likes. |
184 | (catch 'system-error | |
185 | thunk | |
186 | (lambda args | |
187 | (leave (_ "~a~%") | |
188 | (strerror (system-error-errno args))))))) | |
073c34d7 | 189 | |
eb0880e7 LC |
190 | (define (read/eval-package-expression str) |
191 | "Read and evaluate STR and return the package it refers to, or exit an | |
192 | error." | |
193 | (let ((exp (catch #t | |
194 | (lambda () | |
195 | (call-with-input-string str read)) | |
196 | (lambda args | |
197 | (leave (_ "failed to read expression ~s: ~s~%") | |
198 | str args))))) | |
199 | (let ((p (catch #t | |
200 | (lambda () | |
201 | (eval exp the-scm-module)) | |
202 | (lambda args | |
203 | (leave (_ "failed to evaluate expression `~a': ~s~%") | |
204 | exp args))))) | |
205 | (if (package? p) | |
206 | p | |
207 | (leave (_ "expression `~s' does not evaluate to a package~%") | |
208 | exp))))) | |
209 | ||
dd36b51b LC |
210 | (define* (show-what-to-build store drv |
211 | #:key dry-run? (use-substitutes? #t)) | |
9bb2b96a | 212 | "Show what will or would (depending on DRY-RUN?) be built in realizing the |
4d60610a | 213 | derivations listed in DRV. Return #t if there's something to build, #f |
dd36b51b LC |
214 | otherwise. When USE-SUBSTITUTES?, check and report what is prerequisites are |
215 | available for download." | |
216 | (let*-values (((build download) | |
59688fc4 LC |
217 | (fold2 (lambda (drv build download) |
218 | (let-values (((b d) | |
219 | (derivation-prerequisites-to-build | |
220 | store drv | |
221 | #:use-substitutes? | |
222 | use-substitutes?))) | |
223 | (values (append b build) | |
224 | (append d download)))) | |
dd36b51b LC |
225 | '() '() |
226 | drv)) | |
227 | ((build) ; add the DRV themselves | |
228 | (delete-duplicates | |
59688fc4 LC |
229 | (append (map derivation-file-name |
230 | (remove (lambda (drv) | |
231 | (let ((out (derivation->output-path | |
232 | drv))) | |
233 | (or (valid-path? store out) | |
234 | (and use-substitutes? | |
235 | (has-substitutes? store | |
236 | out))))) | |
237 | drv)) | |
dd36b51b LC |
238 | (map derivation-input-path build)))) |
239 | ((download) ; add the references of DOWNLOAD | |
1a8b7834 LC |
240 | (if use-substitutes? |
241 | (delete-duplicates | |
242 | (append download | |
243 | (remove (cut valid-path? store <>) | |
244 | (append-map | |
245 | substitutable-references | |
246 | (substitutable-path-info store | |
247 | download))))) | |
248 | download))) | |
00554b2a | 249 | ;; TODO: Show the installed size of DOWNLOAD. |
9bb2b96a | 250 | (if dry-run? |
dd36b51b LC |
251 | (begin |
252 | (format (current-error-port) | |
83e61a73 LC |
253 | (N_ "~:[The following derivation would be built:~%~{ ~a~%~}~;~]" |
254 | "~:[The following derivations would be built:~%~{ ~a~%~}~;~]" | |
dd36b51b LC |
255 | (length build)) |
256 | (null? build) build) | |
257 | (format (current-error-port) | |
83e61a73 LC |
258 | (N_ "~:[The following file would be downloaded:~%~{ ~a~%~}~;~]" |
259 | "~:[The following files would be downloaded:~%~{ ~a~%~}~;~]" | |
dd36b51b LC |
260 | (length download)) |
261 | (null? download) download)) | |
262 | (begin | |
263 | (format (current-error-port) | |
83e61a73 LC |
264 | (N_ "~:[The following derivation will be built:~%~{ ~a~%~}~;~]" |
265 | "~:[The following derivations will be built:~%~{ ~a~%~}~;~]" | |
dd36b51b LC |
266 | (length build)) |
267 | (null? build) build) | |
268 | (format (current-error-port) | |
83e61a73 LC |
269 | (N_ "~:[The following file will be downloaded:~%~{ ~a~%~}~;~]" |
270 | "~:[The following files will be downloaded:~%~{ ~a~%~}~;~]" | |
dd36b51b LC |
271 | (length download)) |
272 | (null? download) download))) | |
273 | (pair? build))) | |
9bb2b96a | 274 | |
073c34d7 LC |
275 | (define-syntax with-error-handling |
276 | (syntax-rules () | |
277 | "Run BODY within a user-friendly error condition handler." | |
278 | ((_ body ...) | |
279 | (call-with-error-handling | |
280 | (lambda () | |
281 | body ...))))) | |
282 | ||
64fc89b6 LC |
283 | (define (location->string loc) |
284 | "Return a human-friendly, GNU-standard representation of LOC." | |
285 | (match loc | |
286 | (#f (_ "<unknown location>")) | |
287 | (($ <location> file line column) | |
288 | (format #f "~a:~a:~a" file line column)))) | |
289 | ||
c61b026e LC |
290 | (define (switch-symlinks link target) |
291 | "Atomically switch LINK, a symbolic link, to point to TARGET. Works | |
292 | both when LINK already exists and when it does not." | |
293 | (let ((pivot (string-append link ".new"))) | |
294 | (symlink target pivot) | |
295 | (rename-file pivot link))) | |
296 | ||
f651b477 LC |
297 | (define (config-directory) |
298 | "Return the name of the configuration directory, after making sure that it | |
299 | exists. Honor the XDG specs, | |
300 | <http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html>." | |
301 | (let ((dir (and=> (or (getenv "XDG_CONFIG_HOME") | |
302 | (and=> (getenv "HOME") | |
303 | (cut string-append <> "/.config"))) | |
304 | (cut string-append <> "/guix")))) | |
305 | (catch 'system-error | |
306 | (lambda () | |
307 | (mkdir dir) | |
308 | dir) | |
309 | (lambda args | |
310 | (match (system-error-errno args) | |
311 | ((or EEXIST 0) | |
312 | dir) | |
313 | (err | |
314 | (leave (_ "failed to create configuration directory `~a': ~a~%") | |
315 | dir (strerror err)))))))) | |
316 | ||
299112d3 LC |
317 | (define* (fill-paragraph str width #:optional (column 0)) |
318 | "Fill STR such that each line contains at most WIDTH characters, assuming | |
319 | that the first character is at COLUMN. | |
320 | ||
321 | When STR contains a single line break surrounded by other characters, it is | |
322 | converted to a space; sequences of more than one line break are preserved." | |
323 | (define (maybe-break chr result) | |
324 | (match result | |
325 | ((column newlines chars) | |
326 | (case chr | |
327 | ((#\newline) | |
328 | `(,column ,(+ 1 newlines) ,chars)) | |
329 | (else | |
330 | (let ((chars (case newlines | |
331 | ((0) chars) | |
332 | ((1) (cons #\space chars)) | |
333 | (else | |
334 | (append (make-list newlines #\newline) chars)))) | |
335 | (column (case newlines | |
336 | ((0) column) | |
337 | ((1) (+ 1 column)) | |
338 | (else 0)))) | |
339 | (let ((chars (cons chr chars)) | |
340 | (column (+ 1 column))) | |
341 | (if (> column width) | |
342 | (let*-values (((before after) | |
343 | (break (cut eqv? #\space <>) chars)) | |
344 | ((len) | |
345 | (length before))) | |
346 | (if (<= len width) | |
347 | `(,len | |
348 | 0 | |
349 | ,(if (null? after) | |
350 | before | |
351 | (append before (cons #\newline (cdr after))))) | |
352 | `(,column 0 ,chars))) ; unbreakable | |
353 | `(,column 0 ,chars))))))))) | |
354 | ||
355 | (match (string-fold maybe-break | |
356 | `(,column 0 ()) | |
357 | str) | |
358 | ((_ _ chars) | |
359 | (list->string (reverse chars))))) | |
360 | ||
361 | (define (string->recutils str) | |
362 | "Return a version of STR where newlines have been replaced by newlines | |
363 | followed by \"+ \", which makes for a valid multi-line field value in the | |
364 | `recutils' syntax." | |
365 | (list->string | |
366 | (string-fold-right (lambda (chr result) | |
367 | (if (eqv? chr #\newline) | |
368 | (cons* chr #\+ #\space result) | |
369 | (cons chr result))) | |
370 | '() | |
371 | str))) | |
372 | ||
373 | (define* (package->recutils p port | |
374 | #:optional (width (or (and=> (getenv "WIDTH") | |
375 | string->number) | |
376 | 80))) | |
377 | "Write to PORT a `recutils' record of package P, arranging to fit within | |
378 | WIDTH columns." | |
379 | (define (description->recutils str) | |
380 | (let ((str (_ str))) | |
381 | (string->recutils | |
382 | (fill-paragraph str width | |
383 | (string-length "description: "))))) | |
384 | ||
385 | ;; Note: Don't i18n field names so that people can post-process it. | |
386 | (format port "name: ~a~%" (package-name p)) | |
387 | (format port "version: ~a~%" (package-version p)) | |
388 | (format port "location: ~a~%" | |
389 | (or (and=> (package-location p) location->string) | |
390 | (_ "unknown"))) | |
391 | (format port "home-page: ~a~%" (package-home-page p)) | |
392 | (format port "license: ~a~%" | |
393 | (match (package-license p) | |
394 | (((? license? licenses) ...) | |
395 | (string-join (map license-name licenses) | |
396 | ", ")) | |
397 | ((? license? license) | |
398 | (license-name license)) | |
399 | (x | |
400 | (_ "unknown")))) | |
401 | (format port "synopsis: ~a~%" | |
402 | (string-map (match-lambda | |
403 | (#\newline #\space) | |
404 | (chr chr)) | |
405 | (or (and=> (package-synopsis p) _) | |
406 | ""))) | |
407 | (format port "description: ~a~%" | |
408 | (and=> (package-description p) description->recutils)) | |
409 | (newline port)) | |
410 | ||
2cd09108 NK |
411 | (define (string->generations str) |
412 | "Return the list of generations matching a pattern in STR. This function | |
413 | accepts the following patterns: \"1\", \"1,2,3\", \"1..9\", \"1..\", \"..9\"." | |
414 | (define (maybe-integer) | |
415 | (let ((x (string->number str))) | |
416 | (and (integer? x) | |
417 | x))) | |
418 | ||
419 | (define (maybe-comma-separated-integers) | |
420 | (let ((lst (delete-duplicates | |
421 | (map string->number | |
422 | (string-split str #\,))))) | |
423 | (and (every integer? lst) | |
424 | lst))) | |
425 | ||
426 | (cond ((maybe-integer) | |
427 | => | |
428 | list) | |
429 | ((maybe-comma-separated-integers) | |
430 | => | |
431 | identity) | |
432 | ((string-match "^([0-9]+)\\.\\.([0-9]+)$" str) | |
433 | => | |
434 | (lambda (match) | |
435 | (let ((s (string->number (match:substring match 1))) | |
436 | (e (string->number (match:substring match 2)))) | |
437 | (and (every integer? (list s e)) | |
438 | (<= s e) | |
439 | (iota (1+ (- e s)) s))))) | |
440 | ((string-match "^([0-9]+)\\.\\.$" str) | |
441 | => | |
442 | (lambda (match) | |
443 | (let ((s (string->number (match:substring match 1)))) | |
444 | (and (integer? s) | |
445 | `(>= ,s))))) | |
446 | ((string-match "^\\.\\.([0-9]+)$" str) | |
447 | => | |
448 | (lambda (match) | |
449 | (let ((e (string->number (match:substring match 1)))) | |
450 | (and (integer? e) | |
451 | `(<= ,e))))) | |
452 | (else #f))) | |
453 | ||
454 | (define (string->duration str) | |
455 | "Return the duration matching a pattern in STR. This function accepts the | |
456 | following patterns: \"1d\", \"1w\", \"1m\"." | |
457 | (define (hours->duration hours match) | |
458 | (make-time time-duration 0 | |
459 | (* 3600 hours (string->number (match:substring match 1))))) | |
460 | ||
461 | (cond ((string-match "^([0-9]+)d$" str) | |
462 | => | |
463 | (lambda (match) | |
464 | (hours->duration 24 match))) | |
465 | ((string-match "^([0-9]+)w$" str) | |
466 | => | |
467 | (lambda (match) | |
468 | (hours->duration (* 24 7) match))) | |
469 | ((string-match "^([0-9]+)m$" str) | |
470 | => | |
471 | (lambda (match) | |
472 | (hours->duration (* 24 30) match))) | |
473 | (else #f))) | |
474 | ||
a5975ced LC |
475 | (define (args-fold* options unrecognized-option-proc operand-proc . seeds) |
476 | "A wrapper on top of `args-fold' that does proper user-facing error | |
477 | reporting." | |
478 | (catch 'misc-error | |
479 | (lambda () | |
480 | (apply args-fold options unrecognized-option-proc | |
481 | operand-proc seeds)) | |
482 | (lambda (key proc msg args . rest) | |
483 | ;; XXX: MSG is not i18n'd. | |
484 | (leave (_ "invalid argument: ~a~%") | |
485 | (apply format #f msg args))))) | |
486 | ||
e49951eb | 487 | (define (show-guix-usage) |
e49951eb | 488 | (format (current-error-port) |
25c93676 LC |
489 | (_ "Try `guix --help' for more information.~%")) |
490 | (exit 1)) | |
e49951eb | 491 | |
e31ff8b8 LC |
492 | (define (command-files) |
493 | "Return the list of source files that define Guix sub-commands." | |
494 | (define directory | |
495 | (and=> (search-path %load-path "guix.scm") | |
496 | (compose (cut string-append <> "/guix/scripts") | |
497 | dirname))) | |
498 | ||
2b8cf44f LC |
499 | (define dot-scm? |
500 | (cut string-suffix? ".scm" <>)) | |
501 | ||
502 | ;; In Guile 2.0.5 `scandir' would return "." and ".." regardless even though | |
503 | ;; they don't match `dot-scm?'. Work around it by doing additional | |
504 | ;; filtering. | |
e31ff8b8 | 505 | (if directory |
2b8cf44f | 506 | (filter dot-scm? (scandir directory dot-scm?)) |
e31ff8b8 LC |
507 | '())) |
508 | ||
509 | (define (commands) | |
510 | "Return the list of Guix command names." | |
511 | (map (compose (cut string-drop-right <> 4) | |
512 | basename) | |
513 | (command-files))) | |
514 | ||
515 | (define (show-guix-help) | |
516 | (format #t (_ "Usage: guix COMMAND ARGS... | |
517 | Run COMMAND with ARGS.\n")) | |
518 | (newline) | |
519 | (format #t (_ "COMMAND must be one of the sub-commands listed below:\n")) | |
520 | (newline) | |
521 | ;; TODO: Display a synopsis of each command. | |
b30b13dc | 522 | (format #t "~{ ~a~%~}" (sort (commands) string<?)) |
e31ff8b8 LC |
523 | (show-bug-report-information)) |
524 | ||
a2011be5 LC |
525 | (define program-name |
526 | ;; Name of the command-line program currently executing, or #f. | |
527 | (make-parameter #f)) | |
528 | ||
ec5d0a85 LC |
529 | (define (run-guix-command command . args) |
530 | "Run COMMAND with the given ARGS. Report an error when COMMAND is not | |
531 | found." | |
532 | (define module | |
533 | (catch 'misc-error | |
534 | (lambda () | |
535 | (resolve-interface `(guix scripts ,command))) | |
536 | (lambda - | |
25c93676 LC |
537 | (format (current-error-port) |
538 | (_ "guix: ~a: command not found~%") command) | |
539 | (show-guix-usage)))) | |
ec5d0a85 LC |
540 | |
541 | (let ((command-main (module-ref module | |
542 | (symbol-append 'guix- command)))) | |
543 | (parameterize ((program-name command)) | |
544 | (apply command-main args)))) | |
545 | ||
a2011be5 LC |
546 | (define guix-warning-port |
547 | (make-parameter (current-warning-port))) | |
548 | ||
e49951eb MW |
549 | (define (guix-main arg0 . args) |
550 | (initialize-guix) | |
551 | (let () | |
552 | (define (option? str) (string-prefix? "-" str)) | |
553 | (match args | |
25c93676 LC |
554 | (() |
555 | (format (current-error-port) | |
556 | (_ "guix: missing command name~%")) | |
557 | (show-guix-usage)) | |
e12b3eb9 | 558 | ((or ("-h") ("--help")) |
25c93676 LC |
559 | (show-guix-help)) |
560 | (("--version") | |
561 | (show-version-and-exit "guix")) | |
562 | (((? option? o) args ...) | |
563 | (format (current-error-port) | |
564 | (_ "guix: unrecognized option '~a'~%") o) | |
565 | (show-guix-usage)) | |
e49951eb | 566 | ((command args ...) |
ec5d0a85 LC |
567 | (apply run-guix-command |
568 | (string->symbol command) | |
569 | args))))) | |
e49951eb | 570 | |
073c34d7 | 571 | ;;; ui.scm ends here |