Commit | Line | Data |
---|---|---|
2ca299ca | 1 | ;;; GNU Guix --- Functional package management for GNU |
a65177a6 | 2 | ;;; Copyright © 2018, 2019 Ludovic Courtès <ludo@gnu.org> |
2ca299ca LC |
3 | ;;; |
4 | ;;; This file is part of GNU Guix. | |
5 | ;;; | |
6 | ;;; GNU Guix is free software; you can redistribute it and/or modify it | |
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 | ;;; | |
11 | ;;; GNU Guix is distributed in the hope that it will be useful, but | |
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 | |
17 | ;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>. | |
18 | ||
19 | (define-module (guix inferior) | |
20 | #:use-module (srfi srfi-9) | |
21 | #:use-module (srfi srfi-9 gnu) | |
9daf046c LC |
22 | #:use-module ((guix utils) |
23 | #:select (%current-system | |
24 | source-properties->location | |
e1a4ffda | 25 | call-with-temporary-directory |
2dad0313 LC |
26 | version>? version-prefix? |
27 | cache-directory)) | |
9daf046c | 28 | #:use-module ((guix store) |
de9fbe9c LC |
29 | #:select (store-connection-socket |
30 | store-connection-major-version | |
31 | store-connection-minor-version | |
9daf046c LC |
32 | store-lift)) |
33 | #:use-module ((guix derivations) | |
34 | #:select (read-derivation-from-file)) | |
35 | #:use-module (guix gexp) | |
eee8b303 | 36 | #:use-module (guix search-paths) |
2e6d64e1 | 37 | #:use-module (guix profiles) |
2dad0313 LC |
38 | #:use-module (guix channels) |
39 | #:use-module (guix monads) | |
40 | #:use-module (guix store) | |
41 | #:use-module (guix derivations) | |
42 | #:use-module (guix base32) | |
43 | #:use-module (gcrypt hash) | |
44 | #:autoload (guix cache) (maybe-remove-expired-cache-entries) | |
45 | #:autoload (guix ui) (show-what-to-build*) | |
46 | #:autoload (guix build utils) (mkdir-p) | |
e1a4ffda | 47 | #:use-module (srfi srfi-1) |
6030396a | 48 | #:use-module (srfi srfi-26) |
2dad0313 | 49 | #:autoload (ice-9 ftw) (scandir) |
2ca299ca LC |
50 | #:use-module (ice-9 match) |
51 | #:use-module (ice-9 popen) | |
e1a4ffda | 52 | #:use-module (ice-9 vlist) |
9daf046c | 53 | #:use-module (ice-9 binary-ports) |
2dad0313 | 54 | #:use-module ((rnrs bytevectors) #:select (string->utf8)) |
2ca299ca LC |
55 | #:export (inferior? |
56 | open-inferior | |
af15fe13 | 57 | port->inferior |
2ca299ca LC |
58 | close-inferior |
59 | inferior-eval | |
94c0e61f | 60 | inferior-eval-with-store |
2ca299ca | 61 | inferior-object? |
d0ffa321 | 62 | read-repl-response |
2ca299ca | 63 | |
2e6d64e1 | 64 | inferior-packages |
73938054 | 65 | inferior-available-packages |
2e6d64e1 LC |
66 | lookup-inferior-packages |
67 | ||
2ca299ca LC |
68 | inferior-package? |
69 | inferior-package-name | |
70 | inferior-package-version | |
2ca299ca | 71 | inferior-package-synopsis |
7e1d2290 LC |
72 | inferior-package-description |
73 | inferior-package-home-page | |
9daf046c | 74 | inferior-package-location |
6030396a LC |
75 | inferior-package-inputs |
76 | inferior-package-native-inputs | |
77 | inferior-package-propagated-inputs | |
78 | inferior-package-transitive-propagated-inputs | |
eee8b303 LC |
79 | inferior-package-native-search-paths |
80 | inferior-package-transitive-native-search-paths | |
81 | inferior-package-search-paths | |
2e6d64e1 LC |
82 | inferior-package-derivation |
83 | ||
2dad0313 LC |
84 | inferior-package->manifest-entry |
85 | ||
ae927822 LC |
86 | gexp->derivation-in-inferior |
87 | ||
2dad0313 LC |
88 | %inferior-cache-directory |
89 | inferior-for-channels)) | |
2ca299ca LC |
90 | |
91 | ;;; Commentary: | |
92 | ;;; | |
93 | ;;; This module provides a way to spawn Guix "inferior" processes and to talk | |
94 | ;;; to them. It allows us, from one instance of Guix, to interact with | |
95 | ;;; another instance of Guix coming from a different commit. | |
96 | ;;; | |
97 | ;;; Code: | |
98 | ||
99 | ;; Inferior Guix process. | |
100 | (define-record-type <inferior> | |
af15fe13 | 101 | (inferior pid socket close version packages table) |
2ca299ca LC |
102 | inferior? |
103 | (pid inferior-pid) | |
104 | (socket inferior-socket) | |
af15fe13 | 105 | (close inferior-close-socket) ;procedure |
e1a4ffda LC |
106 | (version inferior-version) ;REPL protocol version |
107 | (packages inferior-package-promise) ;promise of inferior packages | |
108 | (table inferior-package-table)) ;promise of vhash | |
2ca299ca LC |
109 | |
110 | (define (inferior-pipe directory command) | |
111 | "Return an input/output pipe on the Guix instance in DIRECTORY. This runs | |
112 | 'DIRECTORY/COMMAND repl' if it exists, or falls back to some other method if | |
113 | it's an old Guix." | |
114 | (let ((pipe (with-error-to-port (%make-void-port "w") | |
115 | (lambda () | |
116 | (open-pipe* OPEN_BOTH | |
117 | (string-append directory "/" command) | |
118 | "repl" "-t" "machine"))))) | |
119 | (if (eof-object? (peek-char pipe)) | |
120 | (begin | |
121 | (close-pipe pipe) | |
122 | ||
123 | ;; Older versions of Guix didn't have a 'guix repl' command, so | |
124 | ;; emulate it. | |
125 | (open-pipe* OPEN_BOTH "guile" | |
126 | "-L" (string-append directory "/share/guile/site/" | |
127 | (effective-version)) | |
128 | "-C" (string-append directory "/share/guile/site/" | |
129 | (effective-version)) | |
130 | "-C" (string-append directory "/lib/guile/" | |
131 | (effective-version) "/site-ccache") | |
132 | "-c" | |
133 | (object->string | |
134 | `(begin | |
135 | (primitive-load ,(search-path %load-path | |
136 | "guix/scripts/repl.scm")) | |
137 | ((@ (guix scripts repl) machine-repl)))))) | |
138 | pipe))) | |
139 | ||
af15fe13 LC |
140 | (define* (port->inferior pipe #:optional (close close-port)) |
141 | "Given PIPE, an input/output port, return an inferior that talks over PIPE. | |
142 | PIPE is closed with CLOSE when 'close-inferior' is called on the returned | |
143 | inferior." | |
a65177a6 | 144 | (setvbuf pipe 'line) |
a81b59b1 | 145 | |
2ca299ca LC |
146 | (match (read pipe) |
147 | (('repl-version 0 rest ...) | |
af15fe13 | 148 | (letrec ((result (inferior 'pipe pipe close (cons 0 rest) |
e1a4ffda LC |
149 | (delay (%inferior-packages result)) |
150 | (delay (%inferior-package-table result))))) | |
2ca299ca LC |
151 | (inferior-eval '(use-modules (guix)) result) |
152 | (inferior-eval '(use-modules (gnu)) result) | |
6030396a | 153 | (inferior-eval '(use-modules (ice-9 match)) result) |
2ca299ca LC |
154 | (inferior-eval '(define %package-table (make-hash-table)) |
155 | result) | |
156 | result)) | |
157 | (_ | |
158 | #f))) | |
159 | ||
af15fe13 LC |
160 | (define* (open-inferior directory #:key (command "bin/guix")) |
161 | "Open the inferior Guix in DIRECTORY, running 'DIRECTORY/COMMAND repl' or | |
162 | equivalent. Return #f if the inferior could not be launched." | |
163 | (define pipe | |
164 | (inferior-pipe directory command)) | |
165 | ||
166 | (port->inferior pipe close-pipe)) | |
167 | ||
2ca299ca LC |
168 | (define (close-inferior inferior) |
169 | "Close INFERIOR." | |
af15fe13 LC |
170 | (let ((close (inferior-close-socket inferior))) |
171 | (close (inferior-socket inferior)))) | |
2ca299ca LC |
172 | |
173 | ;; Non-self-quoting object of the inferior. | |
174 | (define-record-type <inferior-object> | |
175 | (inferior-object address appearance) | |
176 | inferior-object? | |
177 | (address inferior-object-address) | |
178 | (appearance inferior-object-appearance)) | |
179 | ||
180 | (define (write-inferior-object object port) | |
181 | (match object | |
182 | (($ <inferior-object> _ appearance) | |
183 | (format port "#<inferior-object ~a>" appearance)))) | |
184 | ||
185 | (set-record-type-printer! <inferior-object> write-inferior-object) | |
186 | ||
d0ffa321 LC |
187 | (define (read-repl-response port) |
188 | "Read a (guix repl) response from PORT and return it as a Scheme object." | |
2ca299ca LC |
189 | (define sexp->object |
190 | (match-lambda | |
191 | (('value value) | |
192 | value) | |
193 | (('non-self-quoting address string) | |
194 | (inferior-object address string)))) | |
195 | ||
d0ffa321 | 196 | (match (read port) |
2ca299ca LC |
197 | (('values objects ...) |
198 | (apply values (map sexp->object objects))) | |
199 | (('exception key objects ...) | |
200 | (apply throw key (map sexp->object objects))))) | |
201 | ||
d0ffa321 LC |
202 | (define (read-inferior-response inferior) |
203 | (read-repl-response (inferior-socket inferior))) | |
204 | ||
9daf046c LC |
205 | (define (send-inferior-request exp inferior) |
206 | (write exp (inferior-socket inferior)) | |
207 | (newline (inferior-socket inferior))) | |
208 | ||
209 | (define (inferior-eval exp inferior) | |
210 | "Evaluate EXP in INFERIOR." | |
211 | (send-inferior-request exp inferior) | |
212 | (read-inferior-response inferior)) | |
213 | ||
2ca299ca LC |
214 | \f |
215 | ;;; | |
216 | ;;; Inferior packages. | |
217 | ;;; | |
218 | ||
219 | (define-record-type <inferior-package> | |
220 | (inferior-package inferior name version id) | |
221 | inferior-package? | |
222 | (inferior inferior-package-inferior) | |
223 | (name inferior-package-name) | |
224 | (version inferior-package-version) | |
225 | (id inferior-package-id)) | |
226 | ||
227 | (define (write-inferior-package package port) | |
228 | (match package | |
229 | (($ <inferior-package> _ name version) | |
230 | (format port "#<inferior-package ~a@~a ~a>" | |
231 | name version | |
232 | (number->string (object-address package) 16))))) | |
233 | ||
234 | (set-record-type-printer! <inferior-package> write-inferior-package) | |
235 | ||
e1a4ffda LC |
236 | (define (%inferior-packages inferior) |
237 | "Compute the list of inferior packages from INFERIOR." | |
2ca299ca LC |
238 | (let ((result (inferior-eval |
239 | '(fold-packages (lambda (package result) | |
240 | (let ((id (object-address package))) | |
241 | (hashv-set! %package-table id package) | |
242 | (cons (list (package-name package) | |
243 | (package-version package) | |
244 | id) | |
245 | result))) | |
246 | '()) | |
247 | inferior))) | |
248 | (map (match-lambda | |
249 | ((name version id) | |
250 | (inferior-package inferior name version id))) | |
251 | result))) | |
252 | ||
e1a4ffda LC |
253 | (define (inferior-packages inferior) |
254 | "Return the list of packages known to INFERIOR." | |
255 | (force (inferior-package-promise inferior))) | |
256 | ||
257 | (define (%inferior-package-table inferior) | |
258 | "Compute a package lookup table for INFERIOR." | |
259 | (fold (lambda (package table) | |
260 | (vhash-cons (inferior-package-name package) package | |
261 | table)) | |
262 | vlist-null | |
263 | (inferior-packages inferior))) | |
264 | ||
73938054 LC |
265 | (define (inferior-available-packages inferior) |
266 | "Return the list of name/version pairs corresponding to the set of packages | |
267 | available in INFERIOR. | |
268 | ||
269 | This is faster and requires less resource-intensive than calling | |
270 | 'inferior-packages'." | |
271 | (if (inferior-eval '(defined? 'fold-available-packages) | |
272 | inferior) | |
273 | (inferior-eval '(fold-available-packages | |
274 | (lambda* (name version result | |
275 | #:key supported? deprecated? | |
276 | #:allow-other-keys) | |
277 | (if (and supported? (not deprecated?)) | |
278 | (acons name version result) | |
279 | result)) | |
280 | '()) | |
281 | inferior) | |
282 | ||
283 | ;; As a last resort, if INFERIOR is old and lacks | |
284 | ;; 'fold-available-packages', fall back to 'inferior-packages'. | |
285 | (map (lambda (package) | |
286 | (cons (inferior-package-name package) | |
287 | (inferior-package-version package))) | |
288 | (inferior-packages inferior)))) | |
289 | ||
e1a4ffda LC |
290 | (define* (lookup-inferior-packages inferior name #:optional version) |
291 | "Return the sorted list of inferior packages matching NAME in INFERIOR, with | |
292 | highest version numbers first. If VERSION is true, return only packages with | |
293 | a version number prefixed by VERSION." | |
294 | ;; This is the counterpart of 'find-packages-by-name'. | |
295 | (sort (filter (lambda (package) | |
296 | (or (not version) | |
297 | (version-prefix? version | |
298 | (inferior-package-version package)))) | |
299 | (vhash-fold* cons '() name | |
300 | (force (inferior-package-table inferior)))) | |
301 | (lambda (p1 p2) | |
302 | (version>? (inferior-package-version p1) | |
303 | (inferior-package-version p2))))) | |
304 | ||
2ca299ca LC |
305 | (define (inferior-package-field package getter) |
306 | "Return the field of PACKAGE, an inferior package, accessed with GETTER." | |
307 | (let ((inferior (inferior-package-inferior package)) | |
308 | (id (inferior-package-id package))) | |
309 | (inferior-eval `(,getter (hashv-ref %package-table ,id)) | |
310 | inferior))) | |
311 | ||
312 | (define* (inferior-package-synopsis package #:key (translate? #t)) | |
313 | "Return the Texinfo synopsis of PACKAGE, an inferior package. When | |
314 | TRANSLATE? is true, translate it to the current locale's language." | |
315 | (inferior-package-field package | |
316 | (if translate? | |
317 | '(compose (@ (guix ui) P_) package-synopsis) | |
318 | 'package-synopsis))) | |
319 | ||
320 | (define* (inferior-package-description package #:key (translate? #t)) | |
321 | "Return the Texinfo description of PACKAGE, an inferior package. When | |
322 | TRANSLATE? is true, translate it to the current locale's language." | |
323 | (inferior-package-field package | |
324 | (if translate? | |
325 | '(compose (@ (guix ui) P_) package-description) | |
326 | 'package-description))) | |
7e1d2290 LC |
327 | |
328 | (define (inferior-package-home-page package) | |
329 | "Return the home page of PACKAGE." | |
330 | (inferior-package-field package 'package-home-page)) | |
331 | ||
332 | (define (inferior-package-location package) | |
333 | "Return the source code location of PACKAGE, either #f or a <location> | |
334 | record." | |
335 | (source-properties->location | |
336 | (inferior-package-field package | |
337 | '(compose (lambda (loc) | |
338 | (and loc | |
339 | (location->source-properties | |
340 | loc))) | |
341 | package-location)))) | |
9daf046c | 342 | |
6030396a LC |
343 | (define (inferior-package-input-field package field) |
344 | "Return the input field FIELD (e.g., 'native-inputs') of PACKAGE, an | |
345 | inferior package." | |
346 | (define field* | |
347 | `(compose (lambda (inputs) | |
348 | (map (match-lambda | |
349 | ;; XXX: Origins are not handled. | |
350 | ((label (? package? package) rest ...) | |
351 | (let ((id (object-address package))) | |
352 | (hashv-set! %package-table id package) | |
353 | `(,label (package ,id | |
354 | ,(package-name package) | |
355 | ,(package-version package)) | |
356 | ,@rest))) | |
357 | (x | |
358 | x)) | |
359 | inputs)) | |
360 | ,field)) | |
361 | ||
362 | (define inputs | |
363 | (inferior-package-field package field*)) | |
364 | ||
365 | (define inferior | |
366 | (inferior-package-inferior package)) | |
367 | ||
368 | (map (match-lambda | |
369 | ((label ('package id name version) . rest) | |
370 | ;; XXX: eq?-ness of inferior packages is not preserved here. | |
371 | `(,label ,(inferior-package inferior name version id) | |
372 | ,@rest)) | |
373 | (x x)) | |
374 | inputs)) | |
375 | ||
376 | (define inferior-package-inputs | |
377 | (cut inferior-package-input-field <> 'package-inputs)) | |
378 | ||
379 | (define inferior-package-native-inputs | |
380 | (cut inferior-package-input-field <> 'package-native-inputs)) | |
381 | ||
382 | (define inferior-package-propagated-inputs | |
383 | (cut inferior-package-input-field <> 'package-propagated-inputs)) | |
384 | ||
385 | (define inferior-package-transitive-propagated-inputs | |
386 | (cut inferior-package-input-field <> 'package-transitive-propagated-inputs)) | |
387 | ||
eee8b303 LC |
388 | (define (%inferior-package-search-paths package field) |
389 | "Return the list of search path specificiations of PACKAGE, an inferior | |
390 | package." | |
391 | (define paths | |
392 | (inferior-package-field package | |
393 | `(compose (lambda (paths) | |
394 | (map (@ (guix search-paths) | |
395 | search-path-specification->sexp) | |
396 | paths)) | |
397 | ,field))) | |
398 | ||
399 | (map sexp->search-path-specification paths)) | |
400 | ||
401 | (define inferior-package-native-search-paths | |
402 | (cut %inferior-package-search-paths <> 'package-native-search-paths)) | |
403 | ||
404 | (define inferior-package-search-paths | |
405 | (cut %inferior-package-search-paths <> 'package-search-paths)) | |
406 | ||
407 | (define inferior-package-transitive-native-search-paths | |
408 | (cut %inferior-package-search-paths <> 'package-transitive-native-search-paths)) | |
409 | ||
9daf046c LC |
410 | (define (proxy client backend) ;adapted from (guix ssh) |
411 | "Proxy communication between CLIENT and BACKEND until CLIENT closes the | |
412 | connection, at which point CLIENT is closed (both CLIENT and BACKEND must be | |
413 | input/output ports.)" | |
414 | (define (select* read write except) | |
415 | ;; This is a workaround for <https://bugs.gnu.org/30365> in Guile < 2.2.4: | |
416 | ;; since 'select' sometimes returns non-empty sets for no good reason, | |
417 | ;; call 'select' a second time with a zero timeout to filter out incorrect | |
418 | ;; replies. | |
419 | (match (select read write except) | |
420 | ((read write except) | |
421 | (select read write except 0)))) | |
422 | ||
423 | ;; Use buffered ports so that 'get-bytevector-some' returns up to the | |
424 | ;; whole buffer like read(2) would--see <https://bugs.gnu.org/30066>. | |
76832d34 LC |
425 | (setvbuf client 'block 65536) |
426 | (setvbuf backend 'block 65536) | |
9daf046c LC |
427 | |
428 | (let loop () | |
429 | (match (select* (list client backend) '() '()) | |
430 | ((reads () ()) | |
431 | (when (memq client reads) | |
432 | (match (get-bytevector-some client) | |
433 | ((? eof-object?) | |
434 | (close-port client)) | |
435 | (bv | |
436 | (put-bytevector backend bv) | |
437 | (force-output backend)))) | |
438 | (when (memq backend reads) | |
439 | (match (get-bytevector-some backend) | |
440 | (bv | |
441 | (put-bytevector client bv) | |
442 | (force-output client)))) | |
443 | (unless (port-closed? client) | |
444 | (loop)))))) | |
445 | ||
94c0e61f LC |
446 | (define (inferior-eval-with-store inferior store code) |
447 | "Evaluate CODE in INFERIOR, passing it STORE as its argument. CODE must | |
448 | thus be the code of a one-argument procedure that accepts a store." | |
449 | ;; Create a named socket in /tmp and let INFERIOR connect to it and use it | |
450 | ;; as its store. This ensures the inferior uses the same store, with the | |
451 | ;; same options, the same per-session GC roots, etc. | |
af15fe13 | 452 | ;; FIXME: This strategy doesn't work for remote inferiors (SSH). |
9daf046c LC |
453 | (call-with-temporary-directory |
454 | (lambda (directory) | |
455 | (chmod directory #o700) | |
456 | (let* ((name (string-append directory "/inferior")) | |
457 | (socket (socket AF_UNIX SOCK_STREAM 0)) | |
de9fbe9c LC |
458 | (major (store-connection-major-version store)) |
459 | (minor (store-connection-minor-version store)) | |
9daf046c LC |
460 | (proto (logior major minor))) |
461 | (bind socket AF_UNIX name) | |
462 | (listen socket 1024) | |
463 | (send-inferior-request | |
94c0e61f LC |
464 | `(let ((proc ,code) |
465 | (socket (socket AF_UNIX SOCK_STREAM 0))) | |
9daf046c LC |
466 | (connect socket AF_UNIX ,name) |
467 | ||
468 | ;; 'port->connection' appeared in June 2018 and we can hardly | |
469 | ;; emulate it on older versions. Thus fall back to | |
470 | ;; 'open-connection', at the risk of talking to the wrong daemon or | |
471 | ;; having our build result reclaimed (XXX). | |
94c0e61f LC |
472 | (let ((store (if (defined? 'port->connection) |
473 | (port->connection socket #:version ,proto) | |
474 | (open-connection)))) | |
475 | (dynamic-wind | |
476 | (const #t) | |
477 | (lambda () | |
478 | (proc store)) | |
479 | (lambda () | |
480 | (close-connection store) | |
481 | (close-port socket))))) | |
9daf046c LC |
482 | inferior) |
483 | (match (accept socket) | |
484 | ((client . address) | |
de9fbe9c | 485 | (proxy client (store-connection-socket store)))) |
9daf046c | 486 | (close-port socket) |
94c0e61f LC |
487 | (read-inferior-response inferior))))) |
488 | ||
489 | (define* (inferior-package-derivation store package | |
490 | #:optional | |
491 | (system (%current-system)) | |
492 | #:key target) | |
493 | "Return the derivation for PACKAGE, an inferior package, built for SYSTEM | |
494 | and cross-built for TARGET if TARGET is true. The inferior corresponding to | |
495 | PACKAGE must be live." | |
496 | (define proc | |
497 | `(lambda (store) | |
498 | (let* ((package (hashv-ref %package-table | |
499 | ,(inferior-package-id package))) | |
500 | (drv ,(if target | |
501 | `(package-cross-derivation store package | |
502 | ,target | |
503 | ,system) | |
504 | `(package-derivation store package | |
505 | ,system)))) | |
506 | (derivation-file-name drv)))) | |
507 | ||
508 | (and=> (inferior-eval-with-store (inferior-package-inferior package) store | |
509 | proc) | |
510 | read-derivation-from-file)) | |
9daf046c LC |
511 | |
512 | (define inferior-package->derivation | |
513 | (store-lift inferior-package-derivation)) | |
514 | ||
515 | (define-gexp-compiler (package-compiler (package <inferior-package>) system | |
516 | target) | |
517 | ;; Compile PACKAGE for SYSTEM, optionally cross-building for TARGET. | |
518 | (inferior-package->derivation package system #:target target)) | |
2e6d64e1 | 519 | |
ae927822 | 520 | (define* (gexp->derivation-in-inferior name exp guix |
4035fcba LC |
521 | #:key silent-failure? |
522 | #:allow-other-keys | |
ae927822 LC |
523 | #:rest rest) |
524 | "Return a derivation that evaluates EXP with GUIX, an instance of Guix as | |
525 | returned for example by 'channel-instances->derivation'. Other arguments are | |
4035fcba LC |
526 | passed as-is to 'gexp->derivation'. |
527 | ||
528 | When SILENT-FAILURE? is true, create an empty output directory instead of | |
529 | failing when GUIX is too old and lacks the 'guix repl' command." | |
1fafc383 LC |
530 | (define script |
531 | ;; EXP wrapped with a proper (set! %load-path …) prologue. | |
532 | (scheme-file "inferior-script.scm" exp)) | |
533 | ||
ae927822 LC |
534 | (define trampoline |
535 | ;; This is a crude way to run EXP on GUIX. TODO: use 'raw-derivation' and | |
536 | ;; make 'guix repl' the "builder"; this will require "opening up" the | |
537 | ;; mechanisms behind 'gexp->derivation', and adding '-l' to 'guix repl'. | |
538 | #~(begin | |
539 | (use-modules (ice-9 popen)) | |
540 | ||
541 | (let ((pipe (open-pipe* OPEN_WRITE | |
542 | #+(file-append guix "/bin/guix") | |
543 | "repl" "-t" "machine"))) | |
1fafc383 LC |
544 | |
545 | ;; XXX: EXP presumably refers to #$output but that reference is lost | |
546 | ;; so explicitly reference it here. | |
547 | #$output | |
548 | ||
549 | (write `(primitive-load #$script) pipe) | |
ae927822 LC |
550 | |
551 | (unless (zero? (close-pipe pipe)) | |
4035fcba LC |
552 | (if #$silent-failure? |
553 | (mkdir #$output) | |
554 | (error "inferior failed" #+guix)))))) | |
555 | ||
556 | (define (drop-extra-keyword lst) | |
557 | (let loop ((lst lst) | |
558 | (result '())) | |
559 | (match lst | |
560 | (() | |
561 | (reverse result)) | |
562 | ((#:silent-failure? _ . rest) | |
563 | (loop rest result)) | |
564 | ((kw value . tail) | |
565 | (loop tail (cons* value kw result)))))) | |
566 | ||
567 | (apply gexp->derivation name trampoline | |
568 | (drop-extra-keyword rest))) | |
ae927822 | 569 | |
2e6d64e1 LC |
570 | \f |
571 | ;;; | |
572 | ;;; Manifest entries. | |
573 | ;;; | |
574 | ||
575 | (define* (inferior-package->manifest-entry package | |
576 | #:optional (output "out") | |
577 | #:key (parent (delay #f)) | |
578 | (properties '())) | |
579 | "Return a manifest entry for the OUTPUT of package PACKAGE." | |
580 | ;; For each dependency, keep a promise pointing to its "parent" entry. | |
581 | (letrec* ((deps (map (match-lambda | |
582 | ((label package) | |
583 | (inferior-package->manifest-entry package | |
584 | #:parent (delay entry))) | |
585 | ((label package output) | |
586 | (inferior-package->manifest-entry package output | |
587 | #:parent (delay entry)))) | |
588 | (inferior-package-propagated-inputs package))) | |
589 | (entry (manifest-entry | |
590 | (name (inferior-package-name package)) | |
591 | (version (inferior-package-version package)) | |
592 | (output output) | |
593 | (item package) | |
594 | (dependencies (delete-duplicates deps)) | |
595 | (search-paths | |
596 | (inferior-package-transitive-native-search-paths package)) | |
597 | (parent parent) | |
598 | (properties properties)))) | |
599 | entry)) | |
2dad0313 LC |
600 | |
601 | \f | |
602 | ;;; | |
603 | ;;; Cached inferiors. | |
604 | ;;; | |
605 | ||
606 | (define %inferior-cache-directory | |
607 | ;; Directory for cached inferiors (GC roots). | |
608 | (make-parameter (string-append (cache-directory #:ensure? #f) | |
609 | "/inferiors"))) | |
610 | ||
611 | (define* (inferior-for-channels channels | |
612 | #:key | |
613 | (cache-directory (%inferior-cache-directory)) | |
614 | (ttl (* 3600 24 30))) | |
615 | "Return an inferior for CHANNELS, a list of channels. Use the cache at | |
616 | CACHE-DIRECTORY, where entries can be reclaimed after TTL seconds. This | |
617 | procedure opens a new connection to the build daemon. | |
618 | ||
619 | This is a convenience procedure that people may use in manifests passed to | |
620 | 'guix package -m', for instance." | |
621 | (with-store store | |
622 | (let () | |
623 | (define instances | |
624 | (latest-channel-instances store channels)) | |
625 | ||
626 | (define key | |
627 | (bytevector->base32-string | |
628 | (sha256 | |
629 | (string->utf8 | |
630 | (string-concatenate (map channel-instance-commit instances)))))) | |
631 | ||
632 | (define cached | |
633 | (string-append cache-directory "/" key)) | |
634 | ||
635 | (define (base32-encoded-sha256? str) | |
636 | (= (string-length str) 52)) | |
637 | ||
638 | (define (cache-entries directory) | |
639 | (map (lambda (file) | |
640 | (string-append directory "/" file)) | |
641 | (scandir directory base32-encoded-sha256?))) | |
642 | ||
643 | (define symlink* | |
644 | (lift2 symlink %store-monad)) | |
645 | ||
646 | (define add-indirect-root* | |
647 | (store-lift add-indirect-root)) | |
648 | ||
649 | (mkdir-p cache-directory) | |
650 | (maybe-remove-expired-cache-entries cache-directory | |
651 | cache-entries | |
652 | #:entry-expiration | |
653 | (file-expiration-time ttl)) | |
654 | ||
655 | (if (file-exists? cached) | |
656 | (open-inferior cached) | |
657 | (run-with-store store | |
658 | (mlet %store-monad ((profile | |
659 | (channel-instances->derivation instances))) | |
660 | (mbegin %store-monad | |
661 | (show-what-to-build* (list profile)) | |
662 | (built-derivations (list profile)) | |
663 | (symlink* (derivation->output-path profile) cached) | |
664 | (add-indirect-root* cached) | |
665 | (return (open-inferior cached))))))))) |