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233e7676 | 1 | ;;; GNU Guix --- Functional package management for GNU |
deac976d | 2 | ;;; Copyright © 2012, 2013, 2014, 2015, 2016, 2017 Ludovic Courtès <ludo@gnu.org> |
77d3cf08 | 3 | ;;; |
233e7676 | 4 | ;;; This file is part of GNU Guix. |
77d3cf08 | 5 | ;;; |
233e7676 | 6 | ;;; GNU Guix is free software; you can redistribute it and/or modify it |
77d3cf08 LC |
7 | ;;; under the terms of the GNU General Public License as published by |
8 | ;;; the Free Software Foundation; either version 3 of the License, or (at | |
9 | ;;; your option) any later version. | |
10 | ;;; | |
233e7676 | 11 | ;;; GNU Guix is distributed in the hope that it will be useful, but |
77d3cf08 LC |
12 | ;;; WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | ;;; GNU General Public License for more details. | |
15 | ;;; | |
16 | ;;; You should have received a copy of the GNU General Public License | |
233e7676 | 17 | ;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>. |
77d3cf08 LC |
18 | |
19 | (define-module (guix store) | |
82058eff | 20 | #:use-module (guix utils) |
d8eea3d2 | 21 | #:use-module (guix config) |
f9704f17 | 22 | #:use-module (guix memoization) |
0f41c26f | 23 | #:use-module (guix serialization) |
e87f0591 | 24 | #:use-module (guix monads) |
4c0c4db0 | 25 | #:use-module (guix base16) |
cd041b26 LC |
26 | #:use-module (guix base32) |
27 | #:use-module (guix hash) | |
b0a6a971 | 28 | #:autoload (guix build syscalls) (terminal-columns) |
77d3cf08 | 29 | #:use-module (rnrs bytevectors) |
2535635f | 30 | #:use-module (ice-9 binary-ports) |
77d3cf08 LC |
31 | #:use-module (srfi srfi-1) |
32 | #:use-module (srfi srfi-9) | |
bf8e7fc5 | 33 | #:use-module (srfi srfi-9 gnu) |
6581ec9a | 34 | #:use-module (srfi srfi-11) |
77d3cf08 | 35 | #:use-module (srfi srfi-26) |
e87088c9 LC |
36 | #:use-module (srfi srfi-34) |
37 | #:use-module (srfi srfi-35) | |
26bbbb95 | 38 | #:use-module (srfi srfi-39) |
77d3cf08 | 39 | #:use-module (ice-9 match) |
e3d74106 | 40 | #:use-module (ice-9 regex) |
3f1e6939 | 41 | #:use-module (ice-9 vlist) |
6bfec3ed | 42 | #:use-module (ice-9 popen) |
1397b422 LC |
43 | #:use-module (web uri) |
44 | #:export (%daemon-socket-uri | |
a9d2a105 | 45 | %gc-roots-directory |
f8a8e0fe | 46 | %default-substitute-urls |
9fd72fb1 LC |
47 | |
48 | nix-server? | |
77d3cf08 LC |
49 | nix-server-major-version |
50 | nix-server-minor-version | |
51 | nix-server-socket | |
52 | ||
e87088c9 | 53 | &nix-error nix-error? |
ef86c39f LC |
54 | &nix-connection-error nix-connection-error? |
55 | nix-connection-error-file | |
56 | nix-connection-error-code | |
e87088c9 LC |
57 | &nix-protocol-error nix-protocol-error? |
58 | nix-protocol-error-message | |
59 | nix-protocol-error-status | |
60 | ||
26bbbb95 | 61 | hash-algo |
07e70f48 | 62 | build-mode |
26bbbb95 | 63 | |
77d3cf08 | 64 | open-connection |
3abaf0c4 | 65 | close-connection |
ce4a4829 | 66 | with-store |
77d3cf08 | 67 | set-build-options |
4f740b67 | 68 | set-build-options* |
31ef99a8 | 69 | valid-path? |
82058eff | 70 | query-path-hash |
11e7a6cf | 71 | hash-part->path |
533d1768 | 72 | query-path-info |
0d268c5d | 73 | add-data-to-store |
77d3cf08 LC |
74 | add-text-to-store |
75 | add-to-store | |
abac874b LC |
76 | build-things |
77 | build | |
16748d80 LC |
78 | query-failed-paths |
79 | clear-failed-paths | |
3259877d | 80 | add-temp-root |
34811f02 | 81 | add-indirect-root |
a9d2a105 LC |
82 | add-permanent-root |
83 | remove-permanent-root | |
26bbbb95 | 84 | |
0f3d2504 LC |
85 | substitutable? |
86 | substitutable-path | |
87 | substitutable-deriver | |
88 | substitutable-references | |
89 | substitutable-download-size | |
90 | substitutable-nar-size | |
91 | has-substitutes? | |
92 | substitutable-paths | |
93 | substitutable-path-info | |
94 | ||
533d1768 DT |
95 | path-info? |
96 | path-info-deriver | |
97 | path-info-hash | |
98 | path-info-references | |
99 | path-info-registration-time | |
100 | path-info-nar-size | |
101 | ||
f9aefa2d | 102 | built-in-builders |
fae31edc | 103 | references |
6581ec9a | 104 | references/substitutes |
e74f64b9 | 105 | references* |
3f1e6939 | 106 | requisites |
fae31edc | 107 | referrers |
e3fd0ce6 | 108 | optimize-store |
c63d9403 | 109 | verify-store |
50add477 | 110 | topologically-sorted |
fae31edc LC |
111 | valid-derivers |
112 | query-derivation-outputs | |
3259877d LC |
113 | live-paths |
114 | dead-paths | |
115 | collect-garbage | |
116 | delete-paths | |
526382ff LC |
117 | import-paths |
118 | export-paths | |
3259877d | 119 | |
dcee50c1 LC |
120 | current-build-output-port |
121 | ||
6bfec3ed LC |
122 | register-path |
123 | ||
e87f0591 LC |
124 | %store-monad |
125 | store-bind | |
126 | store-return | |
127 | store-lift | |
023d9892 | 128 | store-lower |
e87f0591 LC |
129 | run-with-store |
130 | %guile-for-build | |
98a7b528 LC |
131 | current-system |
132 | set-current-system | |
e87f0591 LC |
133 | text-file |
134 | interned-file | |
135 | ||
26bbbb95 | 136 | %store-prefix |
cd041b26 LC |
137 | store-path |
138 | output-path | |
139 | fixed-output-path | |
26bbbb95 | 140 | store-path? |
9336e5b5 | 141 | direct-store-path? |
e3d74106 | 142 | derivation-path? |
2c6ab6cc | 143 | store-path-package-name |
eddd4077 | 144 | store-path-hash-part |
cdb5b075 | 145 | direct-store-path |
eddd4077 | 146 | log-file)) |
77d3cf08 | 147 | |
deac976d | 148 | (define %protocol-version #x161) |
77d3cf08 | 149 | |
d66b704b LC |
150 | (define %worker-magic-1 #x6e697863) ; "nixc" |
151 | (define %worker-magic-2 #x6478696f) ; "dxio" | |
77d3cf08 LC |
152 | |
153 | (define (protocol-major magic) | |
154 | (logand magic #xff00)) | |
155 | (define (protocol-minor magic) | |
156 | (logand magic #x00ff)) | |
157 | ||
158 | (define-syntax define-enumerate-type | |
159 | (syntax-rules () | |
160 | ((_ name->int (name id) ...) | |
161 | (define-syntax name->int | |
162 | (syntax-rules (name ...) | |
163 | ((_ name) id) ...))))) | |
164 | ||
165 | (define-enumerate-type operation-id | |
166 | ;; operation numbers from worker-protocol.hh | |
167 | (quit 0) | |
168 | (valid-path? 1) | |
169 | (has-substitutes? 3) | |
170 | (query-path-hash 4) | |
171 | (query-references 5) | |
172 | (query-referrers 6) | |
173 | (add-to-store 7) | |
174 | (add-text-to-store 8) | |
abac874b | 175 | (build-things 9) |
77d3cf08 LC |
176 | (ensure-path 10) |
177 | (add-temp-root 11) | |
178 | (add-indirect-root 12) | |
179 | (sync-with-gc 13) | |
180 | (find-roots 14) | |
181 | (export-path 16) | |
182 | (query-deriver 18) | |
183 | (set-options 19) | |
184 | (collect-garbage 20) | |
63193ebf | 185 | ;;(query-substitutable-path-info 21) ; obsolete as of #x10c |
77d3cf08 | 186 | (query-derivation-outputs 22) |
63193ebf | 187 | (query-all-valid-paths 23) |
77d3cf08 LC |
188 | (query-failed-paths 24) |
189 | (clear-failed-paths 25) | |
190 | (query-path-info 26) | |
191 | (import-paths 27) | |
63193ebf LC |
192 | (query-derivation-output-names 28) |
193 | (query-path-from-hash-part 29) | |
194 | (query-substitutable-path-infos 30) | |
195 | (query-valid-paths 31) | |
fae31edc | 196 | (query-substitutable-paths 32) |
e3fd0ce6 | 197 | (query-valid-derivers 33) |
c63d9403 | 198 | (optimize-store 34) |
f9aefa2d LC |
199 | (verify-store 35) |
200 | (built-in-builders 80)) | |
77d3cf08 LC |
201 | |
202 | (define-enumerate-type hash-algo | |
203 | ;; hash.hh | |
204 | (md5 1) | |
205 | (sha1 2) | |
206 | (sha256 3)) | |
207 | ||
07e70f48 LC |
208 | (define-enumerate-type build-mode |
209 | ;; store-api.hh | |
210 | (normal 0) | |
211 | (repair 1) | |
212 | (check 2)) | |
213 | ||
3259877d LC |
214 | (define-enumerate-type gc-action |
215 | ;; store-api.hh | |
216 | (return-live 0) | |
217 | (return-dead 1) | |
218 | (delete-dead 2) | |
219 | (delete-specific 3)) | |
220 | ||
77d3cf08 | 221 | (define %default-socket-path |
80d0447c | 222 | (string-append %state-directory "/daemon-socket/socket")) |
77d3cf08 | 223 | |
1397b422 LC |
224 | (define %daemon-socket-uri |
225 | ;; URI or file name of the socket the daemon listens too. | |
9fd72fb1 LC |
226 | (make-parameter (or (getenv "GUIX_DAEMON_SOCKET") |
227 | %default-socket-path))) | |
228 | ||
229 | ||
77d3cf08 | 230 | \f |
0f3d2504 LC |
231 | ;; Information about a substitutable store path. |
232 | (define-record-type <substitutable> | |
233 | (substitutable path deriver refs dl-size nar-size) | |
234 | substitutable? | |
235 | (path substitutable-path) | |
236 | (deriver substitutable-deriver) | |
237 | (refs substitutable-references) | |
238 | (dl-size substitutable-download-size) | |
239 | (nar-size substitutable-nar-size)) | |
240 | ||
241 | (define (read-substitutable-path-list p) | |
242 | (let loop ((len (read-int p)) | |
243 | (result '())) | |
244 | (if (zero? len) | |
245 | (reverse result) | |
246 | (let ((path (read-store-path p)) | |
247 | (deriver (read-store-path p)) | |
248 | (refs (read-store-path-list p)) | |
249 | (dl-size (read-long-long p)) | |
250 | (nar-size (read-long-long p))) | |
251 | (loop (- len 1) | |
252 | (cons (substitutable path deriver refs dl-size nar-size) | |
253 | result)))))) | |
254 | ||
533d1768 DT |
255 | ;; Information about a store path. |
256 | (define-record-type <path-info> | |
257 | (path-info deriver hash references registration-time nar-size) | |
258 | path-info? | |
22572d56 | 259 | (deriver path-info-deriver) ;string | #f |
533d1768 DT |
260 | (hash path-info-hash) |
261 | (references path-info-references) | |
262 | (registration-time path-info-registration-time) | |
263 | (nar-size path-info-nar-size)) | |
264 | ||
265 | (define (read-path-info p) | |
22572d56 LC |
266 | (let ((deriver (match (read-store-path p) |
267 | ("" #f) | |
268 | (x x))) | |
533d1768 DT |
269 | (hash (base16-string->bytevector (read-string p))) |
270 | (refs (read-store-path-list p)) | |
271 | (registration-time (read-int p)) | |
272 | (nar-size (read-long-long p))) | |
273 | (path-info deriver hash refs registration-time nar-size))) | |
274 | ||
77d3cf08 | 275 | (define-syntax write-arg |
0d268c5d LC |
276 | (syntax-rules (integer boolean bytevector |
277 | string string-list string-pairs | |
3259877d | 278 | store-path store-path-list base16) |
77d3cf08 LC |
279 | ((_ integer arg p) |
280 | (write-int arg p)) | |
281 | ((_ boolean arg p) | |
282 | (write-int (if arg 1 0) p)) | |
0d268c5d LC |
283 | ((_ bytevector arg p) |
284 | (write-bytevector arg p)) | |
77d3cf08 LC |
285 | ((_ string arg p) |
286 | (write-string arg p)) | |
287 | ((_ string-list arg p) | |
82058eff | 288 | (write-string-list arg p)) |
6c20d1d0 LC |
289 | ((_ string-pairs arg p) |
290 | (write-string-pairs arg p)) | |
3259877d LC |
291 | ((_ store-path arg p) |
292 | (write-store-path arg p)) | |
293 | ((_ store-path-list arg p) | |
294 | (write-store-path-list arg p)) | |
82058eff LC |
295 | ((_ base16 arg p) |
296 | (write-string (bytevector->base16-string arg) p)))) | |
77d3cf08 LC |
297 | |
298 | (define-syntax read-arg | |
f9aefa2d | 299 | (syntax-rules (integer boolean string store-path store-path-list string-list |
533d1768 | 300 | substitutable-path-list path-info base16) |
77d3cf08 LC |
301 | ((_ integer p) |
302 | (read-int p)) | |
303 | ((_ boolean p) | |
304 | (not (zero? (read-int p)))) | |
305 | ((_ string p) | |
306 | (read-string p)) | |
307 | ((_ store-path p) | |
82058eff | 308 | (read-store-path p)) |
3259877d LC |
309 | ((_ store-path-list p) |
310 | (read-store-path-list p)) | |
f9aefa2d LC |
311 | ((_ string-list p) |
312 | (read-string-list p)) | |
0f3d2504 LC |
313 | ((_ substitutable-path-list p) |
314 | (read-substitutable-path-list p)) | |
533d1768 DT |
315 | ((_ path-info p) |
316 | (read-path-info p)) | |
0f3d2504 | 317 | ((_ base16 p) |
82058eff | 318 | (base16-string->bytevector (read-string p))))) |
77d3cf08 LC |
319 | |
320 | \f | |
321 | ;; remote-store.cc | |
322 | ||
323 | (define-record-type <nix-server> | |
2c3f47ee | 324 | (%make-nix-server socket major minor |
bdcf35a6 | 325 | ats-cache atts-cache) |
77d3cf08 LC |
326 | nix-server? |
327 | (socket nix-server-socket) | |
328 | (major nix-server-major-version) | |
2c3f47ee LC |
329 | (minor nix-server-minor-version) |
330 | ||
331 | ;; Caches. We keep them per-connection, because store paths build | |
332 | ;; during the session are temporary GC roots kept for the duration of | |
333 | ;; the session. | |
bdcf35a6 LC |
334 | (ats-cache nix-server-add-to-store-cache) |
335 | (atts-cache nix-server-add-text-to-store-cache)) | |
77d3cf08 | 336 | |
bf8e7fc5 LC |
337 | (set-record-type-printer! <nix-server> |
338 | (lambda (obj port) | |
339 | (format port "#<build-daemon ~a.~a ~a>" | |
340 | (nix-server-major-version obj) | |
341 | (nix-server-minor-version obj) | |
342 | (number->string (object-address obj) | |
343 | 16)))) | |
344 | ||
e87088c9 LC |
345 | (define-condition-type &nix-error &error |
346 | nix-error?) | |
347 | ||
ef86c39f LC |
348 | (define-condition-type &nix-connection-error &nix-error |
349 | nix-connection-error? | |
350 | (file nix-connection-error-file) | |
351 | (errno nix-connection-error-code)) | |
352 | ||
e87088c9 LC |
353 | (define-condition-type &nix-protocol-error &nix-error |
354 | nix-protocol-error? | |
355 | (message nix-protocol-error-message) | |
356 | (status nix-protocol-error-status)) | |
357 | ||
3b5cd17a LC |
358 | (define-syntax-rule (system-error-to-connection-error file exp ...) |
359 | "Catch 'system-error' exceptions and translate them to | |
360 | '&nix-connection-error'." | |
361 | (catch 'system-error | |
362 | (lambda () | |
363 | exp ...) | |
364 | (lambda args | |
365 | (let ((errno (system-error-errno args))) | |
366 | (raise (condition (&nix-connection-error | |
367 | (file file) | |
368 | (errno errno)))))))) | |
369 | ||
6230d6f0 LC |
370 | (define (open-unix-domain-socket file) |
371 | "Connect to the Unix-domain socket at FILE and return it. Raise a | |
372 | '&nix-connection-error' upon error." | |
77d3cf08 LC |
373 | (let ((s (with-fluids ((%default-port-encoding #f)) |
374 | ;; This trick allows use of the `scm_c_read' optimization. | |
375 | (socket PF_UNIX SOCK_STREAM 0))) | |
376 | (a (make-socket-address PF_UNIX file))) | |
df1fab58 | 377 | |
3b5cd17a LC |
378 | (system-error-to-connection-error file |
379 | (connect s a) | |
380 | s))) | |
ef86c39f | 381 | |
3dff90ce LC |
382 | (define (open-inet-socket host port) |
383 | "Connect to the Unix-domain socket at HOST:PORT and return it. Raise a | |
384 | '&nix-connection-error' upon error." | |
950d51c9 LC |
385 | ;; Define 'TCP_NODELAY' on Guile 2.0. The value is the same on all GNU |
386 | ;; systems. | |
387 | (cond-expand (guile-2.2 #t) | |
388 | (else (define TCP_NODELAY 1))) | |
389 | ||
3dff90ce LC |
390 | (let ((sock (with-fluids ((%default-port-encoding #f)) |
391 | ;; This trick allows use of the `scm_c_read' optimization. | |
392 | (socket PF_UNIX SOCK_STREAM 0)))) | |
393 | (define addresses | |
394 | (getaddrinfo host | |
395 | (if (number? port) (number->string port) port) | |
396 | (if (number? port) | |
397 | (logior AI_ADDRCONFIG AI_NUMERICSERV) | |
398 | AI_ADDRCONFIG))) | |
399 | ||
400 | (let loop ((addresses addresses)) | |
401 | (match addresses | |
402 | ((ai rest ...) | |
403 | (let ((s (socket (addrinfo:fam ai) | |
404 | ;; TCP/IP only | |
405 | SOCK_STREAM IPPROTO_IP))) | |
406 | ||
407 | (catch 'system-error | |
408 | (lambda () | |
409 | (connect s (addrinfo:addr ai)) | |
950d51c9 LC |
410 | |
411 | ;; Setting this option makes a dramatic difference because it | |
412 | ;; avoids the "ACK delay" on our RPC messages. | |
413 | (setsockopt s IPPROTO_TCP TCP_NODELAY 1) | |
3dff90ce LC |
414 | s) |
415 | (lambda args | |
416 | ;; Connection failed, so try one of the other addresses. | |
417 | (close s) | |
418 | (if (null? rest) | |
419 | (raise (condition (&nix-connection-error | |
420 | (file host) | |
421 | (errno (system-error-errno args))))) | |
422 | (loop rest)))))))))) | |
423 | ||
1397b422 LC |
424 | (define (connect-to-daemon uri) |
425 | "Connect to the daemon at URI, a string that may be an actual URI or a file | |
426 | name." | |
285f63e8 LC |
427 | (define (not-supported) |
428 | (raise (condition (&nix-connection-error | |
429 | (file uri) | |
430 | (errno ENOTSUP))))) | |
431 | ||
1397b422 LC |
432 | (define connect |
433 | (match (string->uri uri) | |
434 | (#f ;URI is a file name | |
435 | open-unix-domain-socket) | |
436 | ((? uri? uri) | |
437 | (match (uri-scheme uri) | |
438 | ((or #f 'file 'unix) | |
439 | (lambda (_) | |
440 | (open-unix-domain-socket (uri-path uri)))) | |
3dff90ce LC |
441 | ('guix |
442 | (lambda (_) | |
443 | (unless (uri-port uri) | |
444 | (raise (condition (&nix-connection-error | |
445 | (file (uri->string uri)) | |
446 | (errno EBADR))))) ;bah! | |
447 | ||
448 | (open-inet-socket (uri-host uri) (uri-port uri)))) | |
285f63e8 LC |
449 | ((? symbol? scheme) |
450 | ;; Try to dynamically load a module for SCHEME. | |
451 | ;; XXX: Errors are swallowed. | |
452 | (match (false-if-exception | |
453 | (resolve-interface `(guix store ,scheme))) | |
454 | ((? module? module) | |
455 | (match (false-if-exception | |
456 | (module-ref module 'connect-to-daemon)) | |
457 | ((? procedure? connect) | |
458 | (lambda (_) | |
459 | (connect uri))) | |
460 | (x (not-supported)))) | |
461 | (#f (not-supported)))) | |
1397b422 | 462 | (x |
285f63e8 | 463 | (not-supported)))))) |
1397b422 LC |
464 | |
465 | (connect uri)) | |
466 | ||
467 | (define* (open-connection #:optional (uri (%daemon-socket-uri)) | |
6230d6f0 | 468 | #:key port (reserve-space? #t) cpu-affinity) |
1397b422 LC |
469 | "Connect to the daemon at URI (a string), or, if PORT is not #f, use it as |
470 | the I/O port over which to communicate to a build daemon. | |
6230d6f0 LC |
471 | |
472 | When RESERVE-SPACE? is true, instruct it to reserve a little bit of extra | |
473 | space on the file system so that the garbage collector can still operate, | |
474 | should the disk become full. When CPU-AFFINITY is true, it must be an integer | |
475 | corresponding to an OS-level CPU number to which the daemon's worker process | |
476 | for this connection will be pinned. Return a server object." | |
13d5e8da LC |
477 | (guard (c ((nar-error? c) |
478 | ;; One of the 'write-' or 'read-' calls below failed, but this is | |
479 | ;; really a connection error. | |
480 | (raise (condition | |
1397b422 | 481 | (&nix-connection-error (file (or port uri)) |
13d5e8da LC |
482 | (errno EPROTO)) |
483 | (&message (message "build daemon handshake failed")))))) | |
1397b422 | 484 | (let ((port (or port (connect-to-daemon uri)))) |
13d5e8da LC |
485 | (write-int %worker-magic-1 port) |
486 | (let ((r (read-int port))) | |
487 | (and (eqv? r %worker-magic-2) | |
488 | (let ((v (read-int port))) | |
489 | (and (eqv? (protocol-major %protocol-version) | |
490 | (protocol-major v)) | |
491 | (begin | |
492 | (write-int %protocol-version port) | |
493 | (when (>= (protocol-minor v) 14) | |
494 | (write-int (if cpu-affinity 1 0) port) | |
495 | (when cpu-affinity | |
496 | (write-int cpu-affinity port))) | |
497 | (when (>= (protocol-minor v) 11) | |
498 | (write-int (if reserve-space? 1 0) port)) | |
499 | (let ((conn (%make-nix-server port | |
500 | (protocol-major v) | |
501 | (protocol-minor v) | |
502 | (make-hash-table 100) | |
503 | (make-hash-table 100)))) | |
504 | (let loop ((done? (process-stderr conn))) | |
505 | (or done? (process-stderr conn))) | |
506 | conn))))))))) | |
77d3cf08 | 507 | |
3abaf0c4 LC |
508 | (define (close-connection server) |
509 | "Close the connection to SERVER." | |
510 | (close (nix-server-socket server))) | |
511 | ||
ce4a4829 LC |
512 | (define-syntax-rule (with-store store exp ...) |
513 | "Bind STORE to an open connection to the store and evaluate EXPs; | |
514 | automatically close the store when the dynamic extent of EXP is left." | |
515 | (let ((store (open-connection))) | |
516 | (dynamic-wind | |
517 | (const #f) | |
518 | (lambda () | |
519 | exp ...) | |
520 | (lambda () | |
521 | (false-if-exception (close-connection store)))))) | |
522 | ||
dcee50c1 LC |
523 | (define current-build-output-port |
524 | ;; The port where build output is sent. | |
525 | (make-parameter (current-error-port))) | |
526 | ||
526382ff LC |
527 | (define* (dump-port in out |
528 | #:optional len | |
529 | #:key (buffer-size 16384)) | |
530 | "Read LEN bytes from IN (or as much as possible if LEN is #f) and write it | |
531 | to OUT, using chunks of BUFFER-SIZE bytes." | |
532 | (define buffer | |
533 | (make-bytevector buffer-size)) | |
534 | ||
535 | (let loop ((total 0) | |
536 | (bytes (get-bytevector-n! in buffer 0 | |
537 | (if len | |
538 | (min len buffer-size) | |
539 | buffer-size)))) | |
540 | (or (eof-object? bytes) | |
541 | (and len (= total len)) | |
542 | (let ((total (+ total bytes))) | |
543 | (put-bytevector out buffer 0 bytes) | |
544 | (loop total | |
545 | (get-bytevector-n! in buffer 0 | |
546 | (if len | |
547 | (min (- len total) buffer-size) | |
548 | buffer-size))))))) | |
549 | ||
d28869af LC |
550 | (define %newlines |
551 | ;; Newline characters triggering a flush of 'current-build-output-port'. | |
552 | ;; Unlike Guile's _IOLBF, we flush upon #\return so that progress reports | |
553 | ;; that use that trick are correctly displayed. | |
554 | (char-set #\newline #\return)) | |
555 | ||
526382ff | 556 | (define* (process-stderr server #:optional user-port) |
dcee50c1 LC |
557 | "Read standard output and standard error from SERVER, writing it to |
558 | CURRENT-BUILD-OUTPUT-PORT. Return #t when SERVER is done sending data, and | |
559 | #f otherwise; in the latter case, the caller should call `process-stderr' | |
bbdb3ffa LC |
560 | again until #t is returned or an error is raised. |
561 | ||
562 | Since the build process's output cannot be assumed to be UTF-8, we | |
563 | conservatively consider it to be Latin-1, thereby avoiding possible | |
564 | encoding conversion errors." | |
77d3cf08 LC |
565 | (define p |
566 | (nix-server-socket server)) | |
567 | ||
568 | ;; magic cookies from worker-protocol.hh | |
5674a3fd LC |
569 | (define %stderr-next #x6f6c6d67) ; "olmg", build log |
570 | (define %stderr-read #x64617461) ; "data", data needed from source | |
571 | (define %stderr-write #x64617416) ; "dat\x16", data for sink | |
572 | (define %stderr-last #x616c7473) ; "alts", we're done | |
573 | (define %stderr-error #x63787470) ; "cxtp", error reporting | |
77d3cf08 LC |
574 | |
575 | (let ((k (read-int p))) | |
576 | (cond ((= k %stderr-write) | |
526382ff LC |
577 | ;; Write a byte stream to USER-PORT. |
578 | (let* ((len (read-int p)) | |
579 | (m (modulo len 8))) | |
6374633b LC |
580 | (dump-port p user-port len |
581 | #:buffer-size (if (<= len 16384) 16384 65536)) | |
526382ff LC |
582 | (unless (zero? m) |
583 | ;; Consume padding, as for strings. | |
584 | (get-bytevector-n p (- 8 m)))) | |
dcee50c1 | 585 | #f) |
77d3cf08 | 586 | ((= k %stderr-read) |
526382ff | 587 | ;; Read a byte stream from USER-PORT. |
5895f244 LC |
588 | ;; Note: Avoid 'get-bytevector-n' to work around |
589 | ;; <http://bugs.gnu.org/17591> in Guile up to 2.0.11. | |
526382ff | 590 | (let* ((max-len (read-int p)) |
5895f244 LC |
591 | (data (make-bytevector max-len)) |
592 | (len (get-bytevector-n! user-port data 0 max-len))) | |
396d12fa | 593 | (write-bytevector data p) |
dcee50c1 | 594 | #f)) |
77d3cf08 | 595 | ((= k %stderr-next) |
ce72c780 LC |
596 | ;; Log a string. Build logs are usually UTF-8-encoded, but they |
597 | ;; may also contain arbitrary byte sequences that should not cause | |
598 | ;; this to fail. Thus, use the permissive | |
599 | ;; 'read-maybe-utf8-string'. | |
600 | (let ((s (read-maybe-utf8-string p))) | |
dcee50c1 | 601 | (display s (current-build-output-port)) |
d28869af | 602 | (when (string-any %newlines s) |
2535635f | 603 | (force-output (current-build-output-port))) |
dcee50c1 | 604 | #f)) |
77d3cf08 | 605 | ((= k %stderr-error) |
526382ff | 606 | ;; Report an error. |
ce72c780 | 607 | (let ((error (read-maybe-utf8-string p)) |
0ff3e3aa LC |
608 | ;; Currently the daemon fails to send a status code for early |
609 | ;; errors like DB schema version mismatches, so check for EOF. | |
610 | (status (if (and (>= (nix-server-minor-version server) 8) | |
611 | (not (eof-object? (lookahead-u8 p)))) | |
77d3cf08 LC |
612 | (read-int p) |
613 | 1))) | |
e87088c9 LC |
614 | (raise (condition (&nix-protocol-error |
615 | (message error) | |
616 | (status status)))))) | |
77d3cf08 | 617 | ((= k %stderr-last) |
dcee50c1 | 618 | ;; The daemon is done (see `stopWork' in `nix-worker.cc'.) |
77d3cf08 LC |
619 | #t) |
620 | (else | |
e87088c9 LC |
621 | (raise (condition (&nix-protocol-error |
622 | (message "invalid error code") | |
623 | (status k)))))))) | |
77d3cf08 | 624 | |
4d581220 | 625 | (define %default-substitute-urls |
d70533cb LC |
626 | ;; Default list of substituters. This is *not* the list baked in |
627 | ;; 'guix-daemon', but it is used by 'guix-service-type' and and a couple of | |
628 | ;; clients ('guix build --log-file' uses it.) | |
df061d07 LC |
629 | (map (if (false-if-exception (resolve-interface '(gnutls))) |
630 | (cut string-append "https://" <>) | |
631 | (cut string-append "http://" <>)) | |
f82ce8f6 | 632 | '("mirror.hydra.gnu.org"))) |
4d581220 | 633 | |
77d3cf08 | 634 | (define* (set-build-options server |
c3eb878f | 635 | #:key keep-failed? keep-going? fallback? |
77d3cf08 | 636 | (verbosity 0) |
2fba87ac | 637 | rounds ;number of build rounds |
deac976d | 638 | max-build-jobs |
6c20d1d0 | 639 | timeout |
deac976d | 640 | max-silent-time |
77d3cf08 LC |
641 | (use-build-hook? #t) |
642 | (build-verbosity 0) | |
643 | (log-type 0) | |
e036c31b | 644 | (print-build-trace #t) |
deac976d | 645 | build-cores |
63193ebf | 646 | (use-substitutes? #t) |
4d581220 | 647 | |
fb4bf72b LC |
648 | ;; Client-provided substitute URLs. If it is #f, |
649 | ;; the daemon's settings are used. Otherwise, it | |
650 | ;; overrides the daemons settings; see 'guix | |
651 | ;; substitute'. | |
b0a6a971 LC |
652 | (substitute-urls #f) |
653 | ||
654 | ;; Number of columns in the client's terminal. | |
38f50f49 LC |
655 | (terminal-columns (terminal-columns)) |
656 | ||
657 | ;; Locale of the client. | |
658 | (locale (false-if-exception (setlocale LC_ALL)))) | |
77d3cf08 LC |
659 | ;; Must be called after `open-connection'. |
660 | ||
661 | (define socket | |
662 | (nix-server-socket server)) | |
663 | ||
664 | (let-syntax ((send (syntax-rules () | |
e036c31b LC |
665 | ((_ (type option) ...) |
666 | (begin | |
667 | (write-arg type option socket) | |
668 | ...))))) | |
669 | (write-int (operation-id set-options) socket) | |
670 | (send (boolean keep-failed?) (boolean keep-going?) | |
deac976d LC |
671 | (boolean fallback?) (integer verbosity)) |
672 | (when (< (nix-server-minor-version server) #x61) | |
673 | (let ((max-build-jobs (or max-build-jobs 1)) | |
674 | (max-silent-time (or max-silent-time 3600))) | |
675 | (send (integer max-build-jobs) (integer max-silent-time)))) | |
371e87d2 LC |
676 | (when (>= (nix-server-minor-version server) 2) |
677 | (send (boolean use-build-hook?))) | |
678 | (when (>= (nix-server-minor-version server) 4) | |
679 | (send (integer build-verbosity) (integer log-type) | |
680 | (boolean print-build-trace))) | |
deac976d LC |
681 | (when (and (>= (nix-server-minor-version server) 6) |
682 | (< (nix-server-minor-version server) #x61)) | |
683 | (let ((build-cores (or build-cores (current-processor-count)))) | |
684 | (send (integer build-cores)))) | |
371e87d2 LC |
685 | (when (>= (nix-server-minor-version server) 10) |
686 | (send (boolean use-substitutes?))) | |
687 | (when (>= (nix-server-minor-version server) 12) | |
41c45e78 LC |
688 | (let ((pairs `(,@(if timeout |
689 | `(("build-timeout" . ,(number->string timeout))) | |
690 | '()) | |
deac976d LC |
691 | ,@(if max-silent-time |
692 | `(("build-max-silent-time" | |
693 | . ,(number->string max-silent-time))) | |
694 | '()) | |
695 | ,@(if max-build-jobs | |
696 | `(("build-max-jobs" | |
697 | . ,(number->string max-build-jobs))) | |
698 | '()) | |
699 | ,@(if build-cores | |
700 | `(("build-cores" . ,(number->string build-cores))) | |
701 | '()) | |
fb4bf72b LC |
702 | ,@(if substitute-urls |
703 | `(("substitute-urls" | |
704 | . ,(string-join substitute-urls))) | |
2fba87ac LC |
705 | '()) |
706 | ,@(if rounds | |
707 | `(("build-repeat" | |
708 | . ,(number->string (max 0 (1- rounds))))) | |
b0a6a971 LC |
709 | '()) |
710 | ,@(if terminal-columns | |
711 | `(("terminal-columns" | |
712 | . ,(number->string terminal-columns))) | |
38f50f49 LC |
713 | '()) |
714 | ,@(if locale | |
715 | `(("locale" . ,locale)) | |
fb4bf72b | 716 | '())))) |
f401b1e9 | 717 | (send (string-pairs pairs)))) |
dcee50c1 LC |
718 | (let loop ((done? (process-stderr server))) |
719 | (or done? (process-stderr server))))) | |
77d3cf08 | 720 | |
fd060fd3 | 721 | (define-syntax operation |
77d3cf08 | 722 | (syntax-rules () |
fd060fd3 | 723 | "Define a client-side RPC stub for the given operation." |
3259877d | 724 | ((_ (name (type arg) ...) docstring return ...) |
fd060fd3 | 725 | (lambda (server arg ...) |
77d3cf08 LC |
726 | docstring |
727 | (let ((s (nix-server-socket server))) | |
728 | (write-int (operation-id name) s) | |
729 | (write-arg type arg s) | |
730 | ... | |
dcee50c1 LC |
731 | ;; Loop until the server is done sending error output. |
732 | (let loop ((done? (process-stderr server))) | |
733 | (or done? (loop (process-stderr server)))) | |
3259877d | 734 | (values (read-arg return s) ...)))))) |
77d3cf08 | 735 | |
fd060fd3 LC |
736 | (define-syntax-rule (define-operation (name args ...) |
737 | docstring return ...) | |
738 | (define name | |
739 | (operation (name args ...) docstring return ...))) | |
740 | ||
31ef99a8 | 741 | (define-operation (valid-path? (string path)) |
06b76acc LC |
742 | "Return #t when PATH designates a valid store item and #f otherwise (an |
743 | invalid item may exist on disk but still be invalid, for instance because it | |
744 | is the result of an aborted or failed build.) | |
745 | ||
746 | A '&nix-protocol-error' condition is raised if PATH is not prefixed by the | |
747 | store directory (/gnu/store)." | |
31ef99a8 LC |
748 | boolean) |
749 | ||
63193ebf | 750 | (define-operation (query-path-hash (store-path path)) |
aa8fff0c | 751 | "Return the SHA256 hash of the nar serialization of PATH as a bytevector." |
82058eff LC |
752 | base16) |
753 | ||
11e7a6cf LC |
754 | (define hash-part->path |
755 | (let ((query-path-from-hash-part | |
756 | (operation (query-path-from-hash-part (string hash)) | |
757 | #f | |
758 | store-path))) | |
759 | (lambda (server hash-part) | |
760 | "Return the store path whose hash part is HASH-PART (a nix-base32 | |
761 | string). Raise an error if no such path exists." | |
762 | ;; This RPC is primarily used by Hydra to reply to HTTP GETs of | |
763 | ;; /HASH.narinfo. | |
764 | (query-path-from-hash-part server hash-part)))) | |
765 | ||
533d1768 DT |
766 | (define-operation (query-path-info (store-path path)) |
767 | "Return the info (hash, references, etc.) for PATH." | |
768 | path-info) | |
769 | ||
0d268c5d | 770 | (define add-data-to-store |
fd060fd3 LC |
771 | ;; A memoizing version of `add-to-store', to avoid repeated RPCs with |
772 | ;; the very same arguments during a given session. | |
773 | (let ((add-text-to-store | |
0d268c5d | 774 | (operation (add-text-to-store (string name) (bytevector text) |
fd060fd3 LC |
775 | (string-list references)) |
776 | #f | |
777 | store-path))) | |
0d268c5d LC |
778 | (lambda* (server name bytes #:optional (references '())) |
779 | "Add BYTES under file NAME in the store, and return its store path. | |
bdcf35a6 LC |
780 | REFERENCES is the list of store paths referred to by the resulting store |
781 | path." | |
0d268c5d LC |
782 | (let* ((args `(,bytes ,name ,references)) |
783 | (cache (nix-server-add-text-to-store-cache server))) | |
bdcf35a6 | 784 | (or (hash-ref cache args) |
0d268c5d | 785 | (let ((path (add-text-to-store server name bytes references))) |
bdcf35a6 LC |
786 | (hash-set! cache args path) |
787 | path)))))) | |
788 | ||
0d268c5d LC |
789 | (define* (add-text-to-store store name text #:optional (references '())) |
790 | "Add TEXT under file NAME in the store, and return its store path. | |
791 | REFERENCES is the list of store paths referred to by the resulting store | |
792 | path." | |
793 | (add-data-to-store store name (string->utf8 text) references)) | |
794 | ||
1ec32f4a LC |
795 | (define true |
796 | ;; Define it once and for all since we use it as a default value for | |
797 | ;; 'add-to-store' and want to make sure two default values are 'eq?' for the | |
798 | ;; purposes or memoization. | |
799 | (lambda (file stat) | |
800 | #t)) | |
801 | ||
fd060fd3 | 802 | (define add-to-store |
a7b6ffee LC |
803 | ;; A memoizing version of `add-to-store'. This is important because |
804 | ;; `add-to-store' leads to huge data transfers to the server, and | |
805 | ;; because it's often called many times with the very same argument. | |
1ec32f4a LC |
806 | (let ((add-to-store |
807 | (lambda* (server basename recursive? hash-algo file-name | |
808 | #:key (select? true)) | |
809 | ;; We don't use the 'operation' macro so we can pass SELECT? to | |
810 | ;; 'write-file'. | |
811 | (let ((port (nix-server-socket server))) | |
812 | (write-int (operation-id add-to-store) port) | |
813 | (write-string basename port) | |
814 | (write-int 1 port) ;obsolete, must be #t | |
815 | (write-int (if recursive? 1 0) port) | |
816 | (write-string hash-algo port) | |
817 | (write-file file-name port #:select? select?) | |
818 | (let loop ((done? (process-stderr server))) | |
819 | (or done? (loop (process-stderr server)))) | |
820 | (read-store-path port))))) | |
821 | (lambda* (server basename recursive? hash-algo file-name | |
822 | #:key (select? true)) | |
a9ebd9ef | 823 | "Add the contents of FILE-NAME under BASENAME to the store. When |
69792b28 LC |
824 | RECURSIVE? is false, FILE-NAME must designate a regular file--not a directory |
825 | nor a symlink. When RECURSIVE? is true and FILE-NAME designates a directory, | |
826 | the contents of FILE-NAME are added recursively; if FILE-NAME designates a | |
827 | flat file and RECURSIVE? is true, its contents are added, and its permission | |
1ec32f4a LC |
828 | bits are kept. HASH-ALGO must be a string such as \"sha256\". |
829 | ||
830 | When RECURSIVE? is true, call (SELECT? FILE STAT) for each directory entry, | |
831 | where FILE is the entry's absolute file name and STAT is the result of | |
832 | 'lstat'; exclude entries for which SELECT? does not return true." | |
69792b28 | 833 | (let* ((st (false-if-exception (lstat file-name))) |
1ec32f4a | 834 | (args `(,st ,basename ,recursive? ,hash-algo ,select?)) |
2c3f47ee | 835 | (cache (nix-server-add-to-store-cache server))) |
a7b6ffee | 836 | (or (and st (hash-ref cache args)) |
1ec32f4a LC |
837 | (let ((path (add-to-store server basename recursive? |
838 | hash-algo file-name | |
839 | #:select? select?))) | |
a7b6ffee LC |
840 | (hash-set! cache args path) |
841 | path)))))) | |
842 | ||
07e70f48 LC |
843 | (define build-things |
844 | (let ((build (operation (build-things (string-list things) | |
845 | (integer mode)) | |
846 | "Do it!" | |
2734cbb8 LC |
847 | boolean)) |
848 | (build/old (operation (build-things (string-list things)) | |
849 | "Do it!" | |
850 | boolean))) | |
07e70f48 LC |
851 | (lambda* (store things #:optional (mode (build-mode normal))) |
852 | "Build THINGS, a list of store items which may be either '.drv' files or | |
abac874b LC |
853 | outputs, and return when the worker is done building them. Elements of THINGS |
854 | that are not derivations can only be substituted and not built locally. | |
dcee50c1 | 855 | Return #t on success." |
2734cbb8 LC |
856 | (if (>= (nix-server-minor-version store) 15) |
857 | (build store things mode) | |
858 | (if (= mode (build-mode normal)) | |
859 | (build/old store things) | |
860 | (raise (condition (&nix-protocol-error | |
861 | (message "unsupported build mode") | |
862 | (status 1))))))))) | |
26bbbb95 | 863 | |
d3648e01 LC |
864 | (define-operation (add-temp-root (store-path path)) |
865 | "Make PATH a temporary root for the duration of the current session. | |
866 | Return #t." | |
867 | boolean) | |
868 | ||
34811f02 | 869 | (define-operation (add-indirect-root (string file-name)) |
a9d2a105 LC |
870 | "Make the symlink FILE-NAME an indirect root for the garbage collector: |
871 | whatever store item FILE-NAME points to will not be collected. Return #t on | |
872 | success. | |
873 | ||
874 | FILE-NAME can be anywhere on the file system, but it must be an absolute file | |
875 | name--it is the caller's responsibility to ensure that it is an absolute file | |
876 | name." | |
34811f02 LC |
877 | boolean) |
878 | ||
a9d2a105 LC |
879 | (define %gc-roots-directory |
880 | ;; The place where garbage collector roots (symlinks) are kept. | |
881 | (string-append %state-directory "/gcroots")) | |
882 | ||
883 | (define (add-permanent-root target) | |
884 | "Add a garbage collector root pointing to TARGET, an element of the store, | |
885 | preventing TARGET from even being collected. This can also be used if TARGET | |
886 | does not exist yet. | |
887 | ||
888 | Raise an error if the caller does not have write access to the GC root | |
889 | directory." | |
890 | (let* ((root (string-append %gc-roots-directory "/" (basename target)))) | |
891 | (catch 'system-error | |
892 | (lambda () | |
893 | (symlink target root)) | |
894 | (lambda args | |
895 | ;; If ROOT already exists, this is fine; otherwise, re-throw. | |
896 | (unless (= EEXIST (system-error-errno args)) | |
897 | (apply throw args)))))) | |
898 | ||
899 | (define (remove-permanent-root target) | |
900 | "Remove the permanent garbage collector root pointing to TARGET. Raise an | |
901 | error if there is no such root." | |
902 | (delete-file (string-append %gc-roots-directory "/" (basename target)))) | |
903 | ||
fae31edc LC |
904 | (define references |
905 | (operation (query-references (store-path path)) | |
906 | "Return the list of references of PATH." | |
907 | store-path-list)) | |
908 | ||
f09aea1b LC |
909 | (define %reference-cache |
910 | ;; Brute-force cache mapping store items to their list of references. | |
911 | ;; Caching matters because when building a profile in the presence of | |
912 | ;; grafts, we keep calling 'graft-derivation', which in turn calls | |
913 | ;; 'references/substitutes' many times with the same arguments. Ideally we | |
914 | ;; would use a cache associated with the daemon connection instead (XXX). | |
915 | (make-hash-table 100)) | |
916 | ||
6581ec9a LC |
917 | (define (references/substitutes store items) |
918 | "Return the list of list of references of ITEMS; the result has the same | |
919 | length as ITEMS. Query substitute information for any item missing from the | |
920 | store at once. Raise a '&nix-protocol-error' exception if reference | |
921 | information for one of ITEMS is missing." | |
922 | (let* ((local-refs (map (lambda (item) | |
f09aea1b LC |
923 | (or (hash-ref %reference-cache item) |
924 | (guard (c ((nix-protocol-error? c) #f)) | |
925 | (references store item)))) | |
6581ec9a LC |
926 | items)) |
927 | (missing (fold-right (lambda (item local-ref result) | |
928 | (if local-ref | |
929 | result | |
930 | (cons item result))) | |
931 | '() | |
932 | items local-refs)) | |
933 | ||
934 | ;; Query all the substitutes at once to minimize the cost of | |
935 | ;; launching 'guix substitute' and making HTTP requests. | |
936 | (substs (substitutable-path-info store missing))) | |
937 | (when (< (length substs) (length missing)) | |
938 | (raise (condition (&nix-protocol-error | |
939 | (message "cannot determine \ | |
940 | the list of references") | |
941 | (status 1))))) | |
942 | ||
943 | ;; Intersperse SUBSTS and LOCAL-REFS. | |
dd78e90a LC |
944 | (let loop ((items items) |
945 | (local-refs local-refs) | |
6581ec9a | 946 | (result '())) |
dd78e90a | 947 | (match items |
6581ec9a | 948 | (() |
f09aea1b LC |
949 | (let ((result (reverse result))) |
950 | (for-each (cut hash-set! %reference-cache <> <>) | |
951 | items result) | |
952 | result)) | |
dd78e90a LC |
953 | ((item items ...) |
954 | (match local-refs | |
955 | ((#f tail ...) | |
956 | (loop items tail | |
957 | (cons (any (lambda (subst) | |
958 | (and (string=? (substitutable-path subst) item) | |
959 | (substitutable-references subst))) | |
960 | substs) | |
961 | result))) | |
962 | ((head tail ...) | |
963 | (loop items tail | |
964 | (cons head result))))))))) | |
6581ec9a | 965 | |
f6fee16e | 966 | (define* (fold-path store proc seed paths |
3f1e6939 | 967 | #:optional (relatives (cut references store <>))) |
f6fee16e | 968 | "Call PROC for each of the RELATIVES of PATHS, exactly once, and return the |
3f1e6939 LC |
969 | result formed from the successive calls to PROC, the first of which is passed |
970 | SEED." | |
f6fee16e | 971 | (let loop ((paths paths) |
3f1e6939 LC |
972 | (result seed) |
973 | (seen vlist-null)) | |
974 | (match paths | |
975 | ((path rest ...) | |
976 | (if (vhash-assoc path seen) | |
977 | (loop rest result seen) | |
978 | (let ((seen (vhash-cons path #t seen)) | |
979 | (rest (append rest (relatives path))) | |
980 | (result (proc path result))) | |
981 | (loop rest result seen)))) | |
982 | (() | |
983 | result)))) | |
984 | ||
f6fee16e LC |
985 | (define (requisites store paths) |
986 | "Return the requisites of PATHS, including PATHS---i.e., their closures (all | |
987 | its references, recursively)." | |
988 | (fold-path store cons '() paths)) | |
3f1e6939 | 989 | |
50add477 LC |
990 | (define (topologically-sorted store paths) |
991 | "Return a list containing PATHS and all their references sorted in | |
992 | topological order." | |
993 | (define (traverse) | |
994 | ;; Do a simple depth-first traversal of all of PATHS. | |
995 | (let loop ((paths paths) | |
996 | (visited vlist-null) | |
997 | (result '())) | |
998 | (define (visit n) | |
999 | (vhash-cons n #t visited)) | |
1000 | ||
1001 | (define (visited? n) | |
1002 | (vhash-assoc n visited)) | |
1003 | ||
1004 | (match paths | |
1005 | ((head tail ...) | |
1006 | (if (visited? head) | |
1007 | (loop tail visited result) | |
1008 | (call-with-values | |
1009 | (lambda () | |
1010 | (loop (references store head) | |
1011 | (visit head) | |
1012 | result)) | |
1013 | (lambda (visited result) | |
1014 | (loop tail | |
1015 | visited | |
1016 | (cons head result)))))) | |
1017 | (() | |
1018 | (values visited result))))) | |
1019 | ||
1020 | (call-with-values traverse | |
1021 | (lambda (_ result) | |
1022 | (reverse result)))) | |
1023 | ||
fae31edc LC |
1024 | (define referrers |
1025 | (operation (query-referrers (store-path path)) | |
1026 | "Return the list of path that refer to PATH." | |
1027 | store-path-list)) | |
1028 | ||
1029 | (define valid-derivers | |
1030 | (operation (query-valid-derivers (store-path path)) | |
1031 | "Return the list of valid \"derivers\" of PATH---i.e., all the | |
1032 | .drv present in the store that have PATH among their outputs." | |
1033 | store-path-list)) | |
1034 | ||
1035 | (define query-derivation-outputs ; avoid name clash with `derivation-outputs' | |
1036 | (operation (query-derivation-outputs (store-path path)) | |
1037 | "Return the list of outputs of PATH, a .drv file." | |
1038 | store-path-list)) | |
1039 | ||
0f3d2504 LC |
1040 | (define-operation (has-substitutes? (store-path path)) |
1041 | "Return #t if binary substitutes are available for PATH, and #f otherwise." | |
1042 | boolean) | |
1043 | ||
1044 | (define substitutable-paths | |
1045 | (operation (query-substitutable-paths (store-path-list paths)) | |
1046 | "Return the subset of PATHS that is substitutable." | |
1047 | store-path-list)) | |
1048 | ||
1049 | (define substitutable-path-info | |
f65cf81a | 1050 | (operation (query-substitutable-path-infos (store-path-list paths)) |
0f3d2504 LC |
1051 | "Return information about the subset of PATHS that is |
1052 | substitutable. For each substitutable path, a `substitutable?' object is | |
dd78e90a LC |
1053 | returned; thus, the resulting list can be shorter than PATHS. Furthermore, |
1054 | that there is no guarantee that the order of the resulting list matches the | |
1055 | order of PATHS." | |
0f3d2504 LC |
1056 | substitutable-path-list)) |
1057 | ||
f9aefa2d LC |
1058 | (define built-in-builders |
1059 | (let ((builders (operation (built-in-builders) | |
1060 | "Return the built-in builders." | |
1061 | string-list))) | |
1062 | (lambda (store) | |
1063 | "Return the names of the supported built-in derivation builders | |
1064 | supported by STORE." | |
1065 | ;; Check whether STORE's version supports this RPC and built-in | |
1066 | ;; derivation builders in general, which appeared in Guix > 0.11.0. | |
1067 | ;; Return the empty list if it doesn't. Note that this RPC does not | |
1068 | ;; exist in 'nix-daemon'. | |
1069 | (if (or (> (nix-server-major-version store) #x100) | |
1070 | (and (= (nix-server-major-version store) #x100) | |
1071 | (>= (nix-server-minor-version store) #x60))) | |
1072 | (builders store) | |
1073 | '())))) | |
1074 | ||
e3fd0ce6 LC |
1075 | (define-operation (optimize-store) |
1076 | "Optimize the store by hard-linking identical files (\"deduplication\".) | |
1077 | Return #t on success." | |
1078 | ;; Note: the daemon in Guix <= 0.8.2 does not implement this RPC. | |
1079 | boolean) | |
1080 | ||
c63d9403 LC |
1081 | (define verify-store |
1082 | (let ((verify (operation (verify-store (boolean check-contents?) | |
1083 | (boolean repair?)) | |
1084 | "Verify the store." | |
1085 | boolean))) | |
1086 | (lambda* (store #:key check-contents? repair?) | |
1087 | "Verify the integrity of the store and return false if errors remain, | |
1088 | and true otherwise. When REPAIR? is true, repair any missing or altered store | |
1089 | items by substituting them (this typically requires root privileges because it | |
1090 | is not an atomic operation.) When CHECK-CONTENTS? is true, check the contents | |
1091 | of store items; this can take a lot of time." | |
1092 | (not (verify store check-contents? repair?))))) | |
1093 | ||
3259877d LC |
1094 | (define (run-gc server action to-delete min-freed) |
1095 | "Perform the garbage-collector operation ACTION, one of the | |
1096 | `gc-action' values. When ACTION is `delete-specific', the TO-DELETE is | |
1097 | the list of store paths to delete. IGNORE-LIVENESS? should always be | |
1098 | #f. MIN-FREED is the minimum amount of disk space to be freed, in | |
1099 | bytes, before the GC can stop. Return the list of store paths delete, | |
1100 | and the number of bytes freed." | |
1101 | (let ((s (nix-server-socket server))) | |
1102 | (write-int (operation-id collect-garbage) s) | |
1103 | (write-int action s) | |
1104 | (write-store-path-list to-delete s) | |
1105 | (write-arg boolean #f s) ; ignore-liveness? | |
1106 | (write-long-long min-freed s) | |
1107 | (write-int 0 s) ; obsolete | |
1108 | (when (>= (nix-server-minor-version server) 5) | |
1109 | ;; Obsolete `use-atime' and `max-atime' parameters. | |
1110 | (write-int 0 s) | |
1111 | (write-int 0 s)) | |
1112 | ||
1113 | ;; Loop until the server is done sending error output. | |
1114 | (let loop ((done? (process-stderr server))) | |
1115 | (or done? (loop (process-stderr server)))) | |
1116 | ||
1117 | (let ((paths (read-store-path-list s)) | |
1118 | (freed (read-long-long s)) | |
1119 | (obsolete (read-long-long s))) | |
000c59b6 LC |
1120 | (unless (null? paths) |
1121 | ;; To be on the safe side, completely invalidate both caches. | |
1122 | ;; Otherwise we could end up returning store paths that are no longer | |
1123 | ;; valid. | |
1124 | (hash-clear! (nix-server-add-to-store-cache server)) | |
1125 | (hash-clear! (nix-server-add-text-to-store-cache server))) | |
1126 | ||
3259877d LC |
1127 | (values paths freed)))) |
1128 | ||
1129 | (define-syntax-rule (%long-long-max) | |
1130 | ;; Maximum unsigned 64-bit integer. | |
1131 | (- (expt 2 64) 1)) | |
1132 | ||
1133 | (define (live-paths server) | |
1134 | "Return the list of live store paths---i.e., store paths still | |
1135 | referenced, and thus not subject to being garbage-collected." | |
1136 | (run-gc server (gc-action return-live) '() (%long-long-max))) | |
1137 | ||
1138 | (define (dead-paths server) | |
1139 | "Return the list of dead store paths---i.e., store paths no longer | |
1140 | referenced, and thus subject to being garbage-collected." | |
1141 | (run-gc server (gc-action return-dead) '() (%long-long-max))) | |
1142 | ||
1143 | (define* (collect-garbage server #:optional (min-freed (%long-long-max))) | |
1144 | "Collect garbage from the store at SERVER. If MIN-FREED is non-zero, | |
1145 | then collect at least MIN-FREED bytes. Return the paths that were | |
1146 | collected, and the number of bytes freed." | |
1147 | (run-gc server (gc-action delete-dead) '() min-freed)) | |
1148 | ||
1149 | (define* (delete-paths server paths #:optional (min-freed (%long-long-max))) | |
1150 | "Delete PATHS from the store at SERVER, if they are no longer | |
1151 | referenced. If MIN-FREED is non-zero, then stop after at least | |
1152 | MIN-FREED bytes have been collected. Return the paths that were | |
1153 | collected, and the number of bytes freed." | |
1154 | (run-gc server (gc-action delete-specific) paths min-freed)) | |
1155 | ||
526382ff LC |
1156 | (define (import-paths server port) |
1157 | "Import the set of store paths read from PORT into SERVER's store. An error | |
1158 | is raised if the set of paths read from PORT is not signed (as per | |
1159 | 'export-path #:sign? #t'.) Return the list of store paths imported." | |
1160 | (let ((s (nix-server-socket server))) | |
1161 | (write-int (operation-id import-paths) s) | |
1162 | (let loop ((done? (process-stderr server port))) | |
1163 | (or done? (loop (process-stderr server port)))) | |
1164 | (read-store-path-list s))) | |
1165 | ||
1166 | (define* (export-path server path port #:key (sign? #t)) | |
1167 | "Export PATH to PORT. When SIGN? is true, sign it." | |
1168 | (let ((s (nix-server-socket server))) | |
1169 | (write-int (operation-id export-path) s) | |
1170 | (write-store-path path s) | |
1171 | (write-arg boolean sign? s) | |
1172 | (let loop ((done? (process-stderr server port))) | |
1173 | (or done? (loop (process-stderr server port)))) | |
1174 | (= 1 (read-int s)))) | |
1175 | ||
5b3d863f | 1176 | (define* (export-paths server paths port #:key (sign? #t) recursive?) |
99fbddf9 | 1177 | "Export the store paths listed in PATHS to PORT, in topological order, |
5b3d863f LC |
1178 | signing them if SIGN? is true. When RECURSIVE? is true, export the closure of |
1179 | PATHS---i.e., PATHS and all their dependencies." | |
cafb92d8 | 1180 | (define ordered |
5b3d863f LC |
1181 | (let ((sorted (topologically-sorted server paths))) |
1182 | ;; When RECURSIVE? is #f, filter out the references of PATHS. | |
1183 | (if recursive? | |
1184 | sorted | |
1185 | (filter (cut member <> paths) sorted)))) | |
cafb92d8 | 1186 | |
1d506993 LC |
1187 | (let loop ((paths ordered)) |
1188 | (match paths | |
1189 | (() | |
1190 | (write-int 0 port)) | |
1191 | ((head tail ...) | |
1192 | (write-int 1 port) | |
1193 | (and (export-path server head port #:sign? sign?) | |
1194 | (loop tail)))))) | |
526382ff | 1195 | |
16748d80 LC |
1196 | (define-operation (query-failed-paths) |
1197 | "Return the list of store items for which a build failure is cached. | |
1198 | ||
1199 | The result is always the empty list unless the daemon was started with | |
1200 | '--cache-failures'." | |
1201 | store-path-list) | |
1202 | ||
1203 | (define-operation (clear-failed-paths (store-path-list items)) | |
1204 | "Remove ITEMS from the list of cached build failures. | |
1205 | ||
1206 | This makes sense only when the daemon was started with '--cache-failures'." | |
1207 | boolean) | |
1208 | ||
6bfec3ed | 1209 | (define* (register-path path |
689142cd LC |
1210 | #:key (references '()) deriver prefix |
1211 | state-directory) | |
6bfec3ed | 1212 | "Register PATH as a valid store file, with REFERENCES as its list of |
bb31e0a3 LC |
1213 | references, and DERIVER as its deriver (.drv that led to it.) If PREFIX is |
1214 | not #f, it must be the name of the directory containing the new store to | |
689142cd LC |
1215 | initialize; if STATE-DIRECTORY is not #f, it must be a string containing the |
1216 | absolute file name to the state directory of the store being initialized. | |
1217 | Return #t on success. | |
6bfec3ed LC |
1218 | |
1219 | Use with care as it directly modifies the store! This is primarily meant to | |
1220 | be used internally by the daemon's build hook." | |
1221 | ;; Currently this is implemented by calling out to the fine C++ blob. | |
95fa173e LC |
1222 | (let ((pipe (apply open-pipe* OPEN_WRITE %guix-register-program |
1223 | `(,@(if prefix | |
1224 | `("--prefix" ,prefix) | |
1225 | '()) | |
1226 | ,@(if state-directory | |
1227 | `("--state-directory" ,state-directory) | |
1228 | '()))))) | |
1229 | (and pipe | |
1230 | (begin | |
1231 | (format pipe "~a~%~a~%~a~%" | |
1232 | path (or deriver "") (length references)) | |
1233 | (for-each (cut format pipe "~a~%" <>) references) | |
1234 | (zero? (close-pipe pipe)))))) | |
6bfec3ed | 1235 | |
26bbbb95 | 1236 | \f |
e87f0591 LC |
1237 | ;;; |
1238 | ;;; Store monad. | |
1239 | ;;; | |
1240 | ||
4e190c28 LC |
1241 | (define-syntax-rule (define-alias new old) |
1242 | (define-syntax new (identifier-syntax old))) | |
e87f0591 | 1243 | |
4e190c28 LC |
1244 | ;; The store monad allows us to (1) build sequences of operations in the |
1245 | ;; store, and (2) make the store an implicit part of the execution context, | |
1246 | ;; rather than a parameter of every single function. | |
1247 | (define-alias %store-monad %state-monad) | |
1248 | (define-alias store-return state-return) | |
1249 | (define-alias store-bind state-bind) | |
e87f0591 | 1250 | |
dcb95c1f LC |
1251 | ;; Instantiate templates for %STORE-MONAD since it's syntactically different |
1252 | ;; from %STATE-MONAD. | |
1253 | (template-directory instantiations %store-monad) | |
1254 | ||
5808dcc2 LC |
1255 | (define (preserve-documentation original proc) |
1256 | "Return PROC with documentation taken from ORIGINAL." | |
1257 | (set-object-property! proc 'documentation | |
1258 | (procedure-property original 'documentation)) | |
1259 | proc) | |
1260 | ||
e87f0591 LC |
1261 | (define (store-lift proc) |
1262 | "Lift PROC, a procedure whose first argument is a connection to the store, | |
1263 | in the store monad." | |
5808dcc2 LC |
1264 | (preserve-documentation proc |
1265 | (lambda args | |
1266 | (lambda (store) | |
1267 | (values (apply proc store args) store))))) | |
e87f0591 | 1268 | |
023d9892 LC |
1269 | (define (store-lower proc) |
1270 | "Lower PROC, a monadic procedure in %STORE-MONAD, to a \"normal\" procedure | |
1271 | taking the store as its first argument." | |
5808dcc2 LC |
1272 | (preserve-documentation proc |
1273 | (lambda (store . args) | |
1274 | (run-with-store store (apply proc args))))) | |
023d9892 | 1275 | |
e87f0591 LC |
1276 | ;; |
1277 | ;; Store monad operators. | |
1278 | ;; | |
1279 | ||
ad372953 LC |
1280 | (define* (text-file name text |
1281 | #:optional (references '())) | |
e87f0591 | 1282 | "Return as a monadic value the absolute file name in the store of the file |
ad372953 LC |
1283 | containing TEXT, a string. REFERENCES is a list of store items that the |
1284 | resulting text file refers to; it defaults to the empty list." | |
e87f0591 | 1285 | (lambda (store) |
ad372953 | 1286 | (values (add-text-to-store store name text references) |
4e190c28 | 1287 | store))) |
e87f0591 LC |
1288 | |
1289 | (define* (interned-file file #:optional name | |
1ec32f4a | 1290 | #:key (recursive? #t) (select? true)) |
e87f0591 LC |
1291 | "Return the name of FILE once interned in the store. Use NAME as its store |
1292 | name, or the basename of FILE if NAME is omitted. | |
1293 | ||
1294 | When RECURSIVE? is true, the contents of FILE are added recursively; if FILE | |
1295 | designates a flat file and RECURSIVE? is true, its contents are added, and its | |
1ec32f4a LC |
1296 | permission bits are kept. |
1297 | ||
1298 | When RECURSIVE? is true, call (SELECT? FILE STAT) for each directory entry, | |
1299 | where FILE is the entry's absolute file name and STAT is the result of | |
1300 | 'lstat'; exclude entries for which SELECT? does not return true." | |
e87f0591 | 1301 | (lambda (store) |
4e190c28 | 1302 | (values (add-to-store store (or name (basename file)) |
1ec32f4a LC |
1303 | recursive? "sha256" file |
1304 | #:select? select?) | |
4e190c28 | 1305 | store))) |
e87f0591 | 1306 | |
abac874b LC |
1307 | (define build |
1308 | ;; Monadic variant of 'build-things'. | |
1309 | (store-lift build-things)) | |
1310 | ||
4f740b67 AK |
1311 | (define set-build-options* |
1312 | (store-lift set-build-options)) | |
1313 | ||
e74f64b9 LC |
1314 | (define references* |
1315 | (store-lift references)) | |
1316 | ||
98a7b528 LC |
1317 | (define-inlinable (current-system) |
1318 | ;; Consult the %CURRENT-SYSTEM fluid at bind time. This is equivalent to | |
1319 | ;; (lift0 %current-system %store-monad), but inlinable, thus avoiding | |
1320 | ;; closure allocation in some cases. | |
1321 | (lambda (state) | |
1322 | (values (%current-system) state))) | |
1323 | ||
1324 | (define-inlinable (set-current-system system) | |
1325 | ;; Set the %CURRENT-SYSTEM fluid at bind time. | |
1326 | (lambda (state) | |
1327 | (values (%current-system system) state))) | |
1328 | ||
e87f0591 LC |
1329 | (define %guile-for-build |
1330 | ;; The derivation of the Guile to be used within the build environment, | |
1331 | ;; when using 'gexp->derivation' and co. | |
1332 | (make-parameter #f)) | |
1333 | ||
1334 | (define* (run-with-store store mval | |
1335 | #:key | |
1336 | (guile-for-build (%guile-for-build)) | |
1337 | (system (%current-system))) | |
1338 | "Run MVAL, a monadic value in the store monad, in STORE, an open store | |
3698f524 | 1339 | connection, and return the result." |
a8afb9ae LC |
1340 | ;; Initialize the dynamic bindings here to avoid bad surprises. The |
1341 | ;; difficulty lies in the fact that dynamic bindings are resolved at | |
1342 | ;; bind-time and not at call time, which can be disconcerting. | |
e87f0591 | 1343 | (parameterize ((%guile-for-build guile-for-build) |
a8afb9ae LC |
1344 | (%current-system system) |
1345 | (%current-target-system #f)) | |
3698f524 LC |
1346 | (call-with-values (lambda () |
1347 | (run-with-state mval store)) | |
1348 | (lambda (result store) | |
1349 | ;; Discard the state. | |
1350 | result)))) | |
e87f0591 LC |
1351 | |
1352 | \f | |
26bbbb95 LC |
1353 | ;;; |
1354 | ;;; Store paths. | |
1355 | ;;; | |
1356 | ||
1357 | (define %store-prefix | |
1358 | ;; Absolute path to the Nix store. | |
1d6816f9 | 1359 | (make-parameter %store-directory)) |
26bbbb95 | 1360 | |
cd041b26 LC |
1361 | (define (compressed-hash bv size) ; `compressHash' |
1362 | "Given the hash stored in BV, return a compressed version thereof that fits | |
1363 | in SIZE bytes." | |
1364 | (define new (make-bytevector size 0)) | |
1365 | (define old-size (bytevector-length bv)) | |
1366 | (let loop ((i 0)) | |
1367 | (if (= i old-size) | |
1368 | new | |
1369 | (let* ((j (modulo i size)) | |
1370 | (o (bytevector-u8-ref new j))) | |
1371 | (bytevector-u8-set! new j | |
1372 | (logxor o (bytevector-u8-ref bv i))) | |
1373 | (loop (+ 1 i)))))) | |
1374 | ||
1375 | (define (store-path type hash name) ; makeStorePath | |
1376 | "Return the store path for NAME/HASH/TYPE." | |
1377 | (let* ((s (string-append type ":sha256:" | |
1378 | (bytevector->base16-string hash) ":" | |
1379 | (%store-prefix) ":" name)) | |
1380 | (h (sha256 (string->utf8 s))) | |
1381 | (c (compressed-hash h 20))) | |
1382 | (string-append (%store-prefix) "/" | |
1383 | (bytevector->nix-base32-string c) "-" | |
1384 | name))) | |
1385 | ||
1386 | (define (output-path output hash name) ; makeOutputPath | |
1387 | "Return an output path for OUTPUT (the name of the output as a string) of | |
1388 | the derivation called NAME with hash HASH." | |
1389 | (store-path (string-append "output:" output) hash | |
1390 | (if (string=? output "out") | |
1391 | name | |
1392 | (string-append name "-" output)))) | |
1393 | ||
1394 | (define* (fixed-output-path name hash | |
1395 | #:key | |
1396 | (output "out") | |
1397 | (hash-algo 'sha256) | |
1398 | (recursive? #t)) | |
1399 | "Return an output path for the fixed output OUTPUT defined by HASH of type | |
1400 | HASH-ALGO, of the derivation NAME. RECURSIVE? has the same meaning as for | |
1401 | 'add-to-store'." | |
1402 | (if (and recursive? (eq? hash-algo 'sha256)) | |
1403 | (store-path "source" hash name) | |
1404 | (let ((tag (string-append "fixed:" output ":" | |
1405 | (if recursive? "r:" "") | |
1406 | (symbol->string hash-algo) ":" | |
1407 | (bytevector->base16-string hash) ":"))) | |
1408 | (store-path (string-append "output:" output) | |
1409 | (sha256 (string->utf8 tag)) | |
1410 | name)))) | |
1411 | ||
f39bd08a LC |
1412 | (define (store-path? path) |
1413 | "Return #t if PATH is a store path." | |
1414 | ;; This is a lightweight check, compared to using a regexp, but this has to | |
1415 | ;; be fast as it's called often in `derivation', for instance. | |
1416 | ;; `isStorePath' in Nix does something similar. | |
1417 | (string-prefix? (%store-prefix) path)) | |
26bbbb95 | 1418 | |
9336e5b5 LC |
1419 | (define (direct-store-path? path) |
1420 | "Return #t if PATH is a store path, and not a sub-directory of a store path. | |
1421 | This predicate is sometimes needed because files *under* a store path are not | |
1422 | valid inputs." | |
1423 | (and (store-path? path) | |
eee21271 | 1424 | (not (string=? path (%store-prefix))) |
9336e5b5 LC |
1425 | (let ((len (+ 1 (string-length (%store-prefix))))) |
1426 | (not (string-index (substring path len) #\/))))) | |
1427 | ||
cdb5b075 CS |
1428 | (define (direct-store-path path) |
1429 | "Return the direct store path part of PATH, stripping components after | |
1430 | '/gnu/store/xxxx-foo'." | |
1431 | (let ((prefix-length (+ (string-length (%store-prefix)) 35))) | |
1432 | (if (> (string-length path) prefix-length) | |
1433 | (let ((slash (string-index path #\/ prefix-length))) | |
1434 | (if slash (string-take path slash) path)) | |
1435 | path))) | |
1436 | ||
26bbbb95 LC |
1437 | (define (derivation-path? path) |
1438 | "Return #t if PATH is a derivation path." | |
1439 | (and (store-path? path) (string-suffix? ".drv" path))) | |
e3d74106 | 1440 | |
5c0f1845 LC |
1441 | (define store-regexp* |
1442 | ;; The substituter makes repeated calls to 'store-path-hash-part', hence | |
1443 | ;; this optimization. | |
55b2d921 LC |
1444 | (mlambda (store) |
1445 | "Return a regexp matching a file in STORE." | |
1446 | (make-regexp (string-append "^" (regexp-quote store) | |
1447 | "/([0-9a-df-np-sv-z]{32})-([^/]+)$")))) | |
5c0f1845 | 1448 | |
e3d74106 LC |
1449 | (define (store-path-package-name path) |
1450 | "Return the package name part of PATH, a file name in the store." | |
5c0f1845 LC |
1451 | (let ((path-rx (store-regexp* (%store-prefix)))) |
1452 | (and=> (regexp-exec path-rx path) | |
1453 | (cut match:substring <> 2)))) | |
2c6ab6cc LC |
1454 | |
1455 | (define (store-path-hash-part path) | |
1456 | "Return the hash part of PATH as a base32 string, or #f if PATH is not a | |
1457 | syntactically valid store path." | |
5c0f1845 | 1458 | (let ((path-rx (store-regexp* (%store-prefix)))) |
2c6ab6cc LC |
1459 | (and=> (regexp-exec path-rx path) |
1460 | (cut match:substring <> 1)))) | |
eddd4077 LC |
1461 | |
1462 | (define (log-file store file) | |
1463 | "Return the build log file for FILE, or #f if none could be found. FILE | |
1464 | must be an absolute store file name, or a derivation file name." | |
eddd4077 | 1465 | (cond ((derivation-path? file) |
021a201f | 1466 | (let* ((base (basename file)) |
80d0447c | 1467 | (log (string-append (dirname %state-directory) ; XXX |
f5768afa | 1468 | "/log/guix/drvs/" |
021a201f LC |
1469 | (string-take base 2) "/" |
1470 | (string-drop base 2))) | |
1471 | (log.bz2 (string-append log ".bz2"))) | |
1472 | (cond ((file-exists? log.bz2) log.bz2) | |
1473 | ((file-exists? log) log) | |
1474 | (else #f)))) | |
eddd4077 LC |
1475 | (else |
1476 | (match (valid-derivers store file) | |
1477 | ((derivers ...) | |
1478 | ;; Return the first that works. | |
1479 | (any (cut log-file store <>) derivers)) | |
1480 | (_ #f))))) | |
3b5cd17a LC |
1481 | |
1482 | ;;; Local Variables: | |
1483 | ;;; eval: (put 'system-error-to-connection-error 'scheme-indent-function 1) | |
1484 | ;;; End: |