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233e7676 LC |
1 | ;;; GNU Guix --- Functional package management for GNU |
2 | ;;; Copyright © 2012, 2013 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 derivations) | |
20 | #:use-module (srfi srfi-1) | |
21 | #:use-module (srfi srfi-9) | |
22 | #:use-module (srfi srfi-26) | |
23 | #:use-module (rnrs io ports) | |
24 | #:use-module (rnrs bytevectors) | |
25 | #:use-module (ice-9 match) | |
26 | #:use-module (ice-9 rdelim) | |
69f90f5c | 27 | #:use-module (guix store) |
26bbbb95 | 28 | #:use-module (guix utils) |
72626a71 | 29 | #:use-module (guix hash) |
ddc29a78 | 30 | #:use-module (guix base32) |
9a20830e LC |
31 | #:export (<derivation> |
32 | derivation? | |
77d3cf08 LC |
33 | derivation-outputs |
34 | derivation-inputs | |
35 | derivation-sources | |
36 | derivation-system | |
37 | derivation-builder-arguments | |
38 | derivation-builder-environment-vars | |
9a20830e LC |
39 | derivation-prerequisites |
40 | derivation-prerequisites-to-build | |
77d3cf08 | 41 | |
9a20830e | 42 | <derivation-output> |
77d3cf08 LC |
43 | derivation-output? |
44 | derivation-output-path | |
45 | derivation-output-hash-algo | |
46 | derivation-output-hash | |
47 | ||
9a20830e | 48 | <derivation-input> |
77d3cf08 LC |
49 | derivation-input? |
50 | derivation-input-path | |
51 | derivation-input-sub-derivations | |
dd36b51b | 52 | derivation-input-output-paths |
77d3cf08 LC |
53 | |
54 | fixed-output-derivation? | |
341c6fdd LC |
55 | derivation-hash |
56 | ||
57 | read-derivation | |
26bbbb95 | 58 | write-derivation |
de4c3f26 | 59 | derivation-path->output-path |
7244a5f7 | 60 | derivation-path->output-paths |
d9085c23 LC |
61 | derivation |
62 | ||
63 | %guile-for-build | |
99634e3f LC |
64 | build-expression->derivation |
65 | imported-files)) | |
77d3cf08 LC |
66 | |
67 | ;;; | |
68 | ;;; Nix derivations, as implemented in Nix's `derivations.cc'. | |
69 | ;;; | |
70 | ||
71 | (define-record-type <derivation> | |
72 | (make-derivation outputs inputs sources system builder args env-vars) | |
73 | derivation? | |
74 | (outputs derivation-outputs) ; list of name/<derivation-output> pairs | |
75 | (inputs derivation-inputs) ; list of <derivation-input> | |
76 | (sources derivation-sources) ; list of store paths | |
77 | (system derivation-system) ; string | |
78 | (builder derivation-builder) ; store path | |
79 | (args derivation-builder-arguments) ; list of strings | |
80 | (env-vars derivation-builder-environment-vars)) ; list of name/value pairs | |
81 | ||
82 | (define-record-type <derivation-output> | |
83 | (make-derivation-output path hash-algo hash) | |
84 | derivation-output? | |
85 | (path derivation-output-path) ; store path | |
86 | (hash-algo derivation-output-hash-algo) ; symbol | #f | |
749c6567 | 87 | (hash derivation-output-hash)) ; bytevector | #f |
77d3cf08 LC |
88 | |
89 | (define-record-type <derivation-input> | |
90 | (make-derivation-input path sub-derivations) | |
91 | derivation-input? | |
92 | (path derivation-input-path) ; store path | |
93 | (sub-derivations derivation-input-sub-derivations)) ; list of strings | |
94 | ||
95 | (define (fixed-output-derivation? drv) | |
96 | "Return #t if DRV is a fixed-output derivation, such as the result of a | |
97 | download with a fixed hash (aka. `fetchurl')." | |
98 | (match drv | |
99 | (($ <derivation> | |
100 | (($ <derivation-output> _ (? symbol?) (? string?)))) | |
101 | #t) | |
102 | (_ #f))) | |
103 | ||
dd36b51b LC |
104 | (define (derivation-input-output-paths input) |
105 | "Return the list of output paths corresponding to INPUT, a | |
106 | <derivation-input>." | |
107 | (match input | |
108 | (($ <derivation-input> path sub-drvs) | |
109 | (map (cut derivation-path->output-path path <>) | |
110 | sub-drvs)))) | |
111 | ||
9a20830e LC |
112 | (define (derivation-prerequisites drv) |
113 | "Return the list of derivation-inputs required to build DRV, recursively." | |
114 | (let loop ((drv drv) | |
115 | (result '())) | |
116 | (let ((inputs (remove (cut member <> result) ; XXX: quadratic | |
117 | (derivation-inputs drv)))) | |
118 | (fold loop | |
119 | (append inputs result) | |
120 | (map (lambda (i) | |
121 | (call-with-input-file (derivation-input-path i) | |
122 | read-derivation)) | |
123 | inputs))))) | |
124 | ||
784bb1f3 | 125 | (define* (derivation-prerequisites-to-build store drv |
dd36b51b LC |
126 | #:key |
127 | (outputs | |
128 | (map | |
129 | car | |
130 | (derivation-outputs drv))) | |
131 | (use-substitutes? #t)) | |
132 | "Return two values: the list of derivation-inputs required to build the | |
133 | OUTPUTS of DRV and not already available in STORE, recursively, and the list | |
134 | of required store paths that can be substituted. When USE-SUBSTITUTES? is #f, | |
135 | that second value is the empty list." | |
136 | (define (derivation-output-paths drv sub-drvs) | |
137 | (match drv | |
138 | (($ <derivation> outputs) | |
139 | (map (lambda (sub-drv) | |
140 | (derivation-output-path (assoc-ref outputs sub-drv))) | |
141 | sub-drvs)))) | |
142 | ||
784bb1f3 LC |
143 | (define built? |
144 | (cut valid-path? store <>)) | |
145 | ||
dd36b51b LC |
146 | (define substitutable? |
147 | ;; Return true if the given path is substitutable. Call | |
148 | ;; `substitutable-paths' upfront, to benefit from parallelism in the | |
149 | ;; substituter. | |
150 | (if use-substitutes? | |
151 | (let ((s (substitutable-paths store | |
152 | (append | |
153 | (derivation-output-paths drv outputs) | |
154 | (append-map | |
155 | derivation-input-output-paths | |
156 | (derivation-prerequisites drv)))))) | |
157 | (cut member <> s)) | |
158 | (const #f))) | |
159 | ||
9a20830e | 160 | (define input-built? |
dd36b51b LC |
161 | (compose (cut any built? <>) derivation-input-output-paths)) |
162 | ||
163 | (define input-substitutable? | |
164 | ;; Return true if and only if all of SUB-DRVS are subsitutable. If at | |
165 | ;; least one is missing, then everything must be rebuilt. | |
166 | (compose (cut every substitutable? <>) derivation-input-output-paths)) | |
784bb1f3 LC |
167 | |
168 | (define (derivation-built? drv sub-drvs) | |
dd36b51b LC |
169 | (every built? (derivation-output-paths drv sub-drvs))) |
170 | ||
171 | (define (derivation-substitutable? drv sub-drvs) | |
172 | (every substitutable? (derivation-output-paths drv sub-drvs))) | |
173 | ||
174 | (let loop ((drv drv) | |
175 | (sub-drvs outputs) | |
176 | (build '()) | |
177 | (substitute '())) | |
178 | (cond ((derivation-built? drv sub-drvs) | |
179 | (values build substitute)) | |
180 | ((derivation-substitutable? drv sub-drvs) | |
181 | (values build | |
182 | (append (derivation-output-paths drv sub-drvs) | |
183 | substitute))) | |
184 | (else | |
185 | (let ((inputs (remove (lambda (i) | |
186 | (or (member i build) ; XXX: quadratic | |
187 | (input-built? i) | |
188 | (input-substitutable? i))) | |
189 | (derivation-inputs drv)))) | |
190 | (fold2 loop | |
191 | (append inputs build) | |
192 | (append (append-map (lambda (input) | |
193 | (if (and (not (input-built? input)) | |
194 | (input-substitutable? input)) | |
195 | (derivation-input-output-paths | |
196 | input) | |
197 | '())) | |
198 | (derivation-inputs drv)) | |
199 | substitute) | |
200 | (map (lambda (i) | |
201 | (call-with-input-file (derivation-input-path i) | |
202 | read-derivation)) | |
203 | inputs) | |
204 | (map derivation-input-sub-derivations inputs))))))) | |
9a20830e | 205 | |
d0840e4a LC |
206 | (define (%read-derivation drv-port) |
207 | ;; Actually read derivation from DRV-PORT. | |
77d3cf08 LC |
208 | |
209 | (define comma (string->symbol ",")) | |
210 | ||
211 | (define (ununquote x) | |
212 | (match x | |
213 | (('unquote x) (ununquote x)) | |
214 | ((x ...) (map ununquote x)) | |
215 | (_ x))) | |
216 | ||
217 | (define (outputs->alist x) | |
218 | (fold-right (lambda (output result) | |
219 | (match output | |
220 | ((name path "" "") | |
221 | (alist-cons name | |
222 | (make-derivation-output path #f #f) | |
223 | result)) | |
224 | ((name path hash-algo hash) | |
225 | ;; fixed-output | |
749c6567 LC |
226 | (let ((algo (string->symbol hash-algo)) |
227 | (hash (base16-string->bytevector hash))) | |
77d3cf08 LC |
228 | (alist-cons name |
229 | (make-derivation-output path algo hash) | |
230 | result))))) | |
231 | '() | |
232 | x)) | |
233 | ||
234 | (define (make-input-drvs x) | |
235 | (fold-right (lambda (input result) | |
236 | (match input | |
237 | ((path (sub-drvs ...)) | |
238 | (cons (make-derivation-input path sub-drvs) | |
239 | result)))) | |
240 | '() | |
241 | x)) | |
242 | ||
df7bbd38 LC |
243 | ;; The contents of a derivation are typically ASCII, but choosing |
244 | ;; UTF-8 allows us to take the fast path for Guile's `scm_getc'. | |
245 | (set-port-encoding! drv-port "UTF-8") | |
246 | ||
77d3cf08 LC |
247 | (let loop ((exp (read drv-port)) |
248 | (result '())) | |
249 | (match exp | |
250 | ((? eof-object?) | |
251 | (let ((result (reverse result))) | |
252 | (match result | |
253 | (('Derive ((outputs ...) (input-drvs ...) | |
254 | (input-srcs ...) | |
255 | (? string? system) | |
256 | (? string? builder) | |
257 | ((? string? args) ...) | |
258 | ((var value) ...))) | |
259 | (make-derivation (outputs->alist outputs) | |
260 | (make-input-drvs input-drvs) | |
261 | input-srcs | |
262 | system builder args | |
263 | (fold-right alist-cons '() var value))) | |
264 | (_ | |
265 | (error "failed to parse derivation" drv-port result))))) | |
266 | ((? (cut eq? <> comma)) | |
267 | (loop (read drv-port) result)) | |
268 | (_ | |
269 | (loop (read drv-port) | |
270 | (cons (ununquote exp) result)))))) | |
271 | ||
d0840e4a LC |
272 | (define read-derivation |
273 | (let ((cache (make-weak-value-hash-table 200))) | |
274 | (lambda (drv-port) | |
275 | "Read the derivation from DRV-PORT and return the corresponding | |
276 | <derivation> object." | |
277 | ;; Memoize that operation because `%read-derivation' is quite expensive, | |
278 | ;; and because the same argument is read more than 15 times on average | |
279 | ;; during something like (package-derivation s gdb). | |
280 | (let ((file (and=> (port-filename drv-port) basename))) | |
281 | (or (and file (hash-ref cache file)) | |
282 | (let ((drv (%read-derivation drv-port))) | |
283 | (hash-set! cache file drv) | |
284 | drv)))))) | |
285 | ||
d8085599 LC |
286 | (define-inlinable (write-sequence lst write-item port) |
287 | ;; Write each element of LST with WRITE-ITEM to PORT, separating them with a | |
288 | ;; comma. | |
289 | (match lst | |
290 | (() | |
291 | #t) | |
292 | ((prefix (... ...) last) | |
293 | (for-each (lambda (item) | |
294 | (write-item item port) | |
295 | (display "," port)) | |
296 | prefix) | |
297 | (write-item last port)))) | |
298 | ||
299 | (define-inlinable (write-list lst write-item port) | |
300 | ;; Write LST as a derivation list to PORT, using WRITE-ITEM to write each | |
301 | ;; element. | |
302 | (display "[" port) | |
303 | (write-sequence lst write-item port) | |
304 | (display "]" port)) | |
305 | ||
306 | (define-inlinable (write-tuple lst write-item port) | |
307 | ;; Same, but write LST as a tuple. | |
308 | (display "(" port) | |
309 | (write-sequence lst write-item port) | |
310 | (display ")" port)) | |
311 | ||
77d3cf08 LC |
312 | (define (write-derivation drv port) |
313 | "Write the ATerm-like serialization of DRV to PORT. See Section 2.4 of | |
314 | Eelco Dolstra's PhD dissertation for an overview of a previous version of | |
315 | that form." | |
aaa848f3 LC |
316 | |
317 | ;; Make sure we're using the faster implementation. | |
318 | (define format simple-format) | |
319 | ||
d8085599 LC |
320 | (define (write-string-list lst) |
321 | (write-list lst write port)) | |
77d3cf08 | 322 | |
d66ac374 LC |
323 | (define (coalesce-duplicate-inputs inputs) |
324 | ;; Return a list of inputs, such that when INPUTS contains the same DRV | |
325 | ;; twice, they are coalesced, with their sub-derivations merged. This is | |
326 | ;; needed because Nix itself keeps only one of them. | |
327 | (fold (lambda (input result) | |
328 | (match input | |
329 | (($ <derivation-input> path sub-drvs) | |
330 | ;; XXX: quadratic | |
331 | (match (find (match-lambda | |
332 | (($ <derivation-input> p s) | |
333 | (string=? p path))) | |
334 | result) | |
335 | (#f | |
336 | (cons input result)) | |
337 | ((and dup ($ <derivation-input> _ sub-drvs2)) | |
338 | ;; Merge DUP with INPUT. | |
339 | (let ((sub-drvs (delete-duplicates | |
340 | (append sub-drvs sub-drvs2)))) | |
341 | (cons (make-derivation-input path sub-drvs) | |
342 | (delq dup result)))))))) | |
343 | '() | |
344 | inputs)) | |
345 | ||
d8085599 LC |
346 | (define (write-output output port) |
347 | (match output | |
348 | ((name . ($ <derivation-output> path hash-algo hash)) | |
349 | (write-tuple (list name path | |
350 | (or (and=> hash-algo symbol->string) "") | |
351 | (or (and=> hash bytevector->base16-string) | |
352 | "")) | |
353 | write | |
354 | port)))) | |
355 | ||
356 | (define (write-input input port) | |
357 | (match input | |
358 | (($ <derivation-input> path sub-drvs) | |
359 | (display "(" port) | |
360 | (write path port) | |
361 | (display "," port) | |
362 | (write-string-list (sort sub-drvs string<?)) | |
363 | (display ")" port)))) | |
364 | ||
365 | (define (write-env-var env-var port) | |
366 | (match env-var | |
367 | ((name . value) | |
368 | (display "(" port) | |
369 | (write name port) | |
370 | (display "," port) | |
371 | (write value port) | |
372 | (display ")" port)))) | |
373 | ||
561eaf71 LC |
374 | ;; Note: lists are sorted alphabetically, to conform with the behavior of |
375 | ;; C++ `std::map' in Nix itself. | |
376 | ||
77d3cf08 LC |
377 | (match drv |
378 | (($ <derivation> outputs inputs sources | |
379 | system builder args env-vars) | |
380 | (display "Derive(" port) | |
d8085599 LC |
381 | (write-list (sort outputs |
382 | (lambda (o1 o2) | |
383 | (string<? (car o1) (car o2)))) | |
384 | write-output | |
385 | port) | |
77d3cf08 | 386 | (display "," port) |
d8085599 LC |
387 | (write-list (sort (coalesce-duplicate-inputs inputs) |
388 | (lambda (i1 i2) | |
389 | (string<? (derivation-input-path i1) | |
390 | (derivation-input-path i2)))) | |
391 | write-input | |
392 | port) | |
77d3cf08 | 393 | (display "," port) |
d8085599 | 394 | (write-string-list (sort sources string<?)) |
77d3cf08 | 395 | (format port ",~s,~s," system builder) |
d8085599 | 396 | (write-string-list args) |
77d3cf08 | 397 | (display "," port) |
d8085599 LC |
398 | (write-list (sort env-vars |
399 | (lambda (e1 e2) | |
400 | (string<? (car e1) (car e2)))) | |
401 | write-env-var | |
402 | port) | |
77d3cf08 LC |
403 | (display ")" port)))) |
404 | ||
aaa848f3 LC |
405 | (define derivation-path->output-path |
406 | ;; This procedure is called frequently, so memoize it. | |
407 | (memoize | |
408 | (lambda* (path #:optional (output "out")) | |
409 | "Read the derivation from PATH (`/nix/store/xxx.drv'), and return the store | |
de4c3f26 | 410 | path of its output OUTPUT." |
aaa848f3 LC |
411 | (let* ((drv (call-with-input-file path read-derivation)) |
412 | (outputs (derivation-outputs drv))) | |
413 | (and=> (assoc-ref outputs output) derivation-output-path))))) | |
de4c3f26 | 414 | |
7244a5f7 LC |
415 | (define (derivation-path->output-paths path) |
416 | "Read the derivation from PATH (`/nix/store/xxx.drv'), and return the | |
417 | list of name/path pairs of its outputs." | |
418 | (let* ((drv (call-with-input-file path read-derivation)) | |
419 | (outputs (derivation-outputs drv))) | |
420 | (map (match-lambda | |
421 | ((name . output) | |
422 | (cons name (derivation-output-path output)))) | |
423 | outputs))) | |
424 | ||
de4c3f26 LC |
425 | \f |
426 | ;;; | |
427 | ;;; Derivation primitive. | |
428 | ;;; | |
429 | ||
26bbbb95 LC |
430 | (define (compressed-hash bv size) ; `compressHash' |
431 | "Given the hash stored in BV, return a compressed version thereof that fits | |
432 | in SIZE bytes." | |
433 | (define new (make-bytevector size 0)) | |
434 | (define old-size (bytevector-length bv)) | |
435 | (let loop ((i 0)) | |
436 | (if (= i old-size) | |
437 | new | |
438 | (let* ((j (modulo i size)) | |
439 | (o (bytevector-u8-ref new j))) | |
440 | (bytevector-u8-set! new j | |
441 | (logxor o (bytevector-u8-ref bv i))) | |
442 | (loop (+ 1 i)))))) | |
77d3cf08 | 443 | |
de4c3f26 LC |
444 | (define derivation-hash ; `hashDerivationModulo' in derivations.cc |
445 | (memoize | |
446 | (lambda (drv) | |
447 | "Return the hash of DRV, modulo its fixed-output inputs, as a bytevector." | |
448 | (match drv | |
449 | (($ <derivation> ((_ . ($ <derivation-output> path | |
749c6567 | 450 | (? symbol? hash-algo) (? bytevector? hash))))) |
de4c3f26 | 451 | ;; A fixed-output derivation. |
77d3cf08 | 452 | (sha256 |
de4c3f26 LC |
453 | (string->utf8 |
454 | (string-append "fixed:out:" (symbol->string hash-algo) | |
749c6567 LC |
455 | ":" (bytevector->base16-string hash) |
456 | ":" path)))) | |
de4c3f26 LC |
457 | (($ <derivation> outputs inputs sources |
458 | system builder args env-vars) | |
459 | ;; A regular derivation: replace the path of each input with that | |
460 | ;; input's hash; return the hash of serialization of the resulting | |
561eaf71 LC |
461 | ;; derivation. |
462 | (let* ((inputs (map (match-lambda | |
463 | (($ <derivation-input> path sub-drvs) | |
464 | (let ((hash (call-with-input-file path | |
465 | (compose bytevector->base16-string | |
466 | derivation-hash | |
467 | read-derivation)))) | |
468 | (make-derivation-input hash sub-drvs)))) | |
469 | inputs)) | |
470 | (drv (make-derivation outputs inputs sources | |
471 | system builder args env-vars))) | |
b0fad8a2 LC |
472 | |
473 | ;; XXX: At this point this remains faster than `port-sha256', because | |
474 | ;; the SHA256 port's `write' method gets called for every single | |
475 | ;; character. | |
de4c3f26 | 476 | (sha256 |
0bd31a21 LC |
477 | (with-fluids ((%default-port-encoding "UTF-8")) |
478 | (string->utf8 (call-with-output-string | |
479 | (cut write-derivation drv <>))))))))))) | |
77d3cf08 | 480 | |
26bbbb95 LC |
481 | (define (store-path type hash name) ; makeStorePath |
482 | "Return the store path for NAME/HASH/TYPE." | |
483 | (let* ((s (string-append type ":sha256:" | |
484 | (bytevector->base16-string hash) ":" | |
485 | (%store-prefix) ":" name)) | |
486 | (h (sha256 (string->utf8 s))) | |
487 | (c (compressed-hash h 20))) | |
488 | (string-append (%store-prefix) "/" | |
489 | (bytevector->nix-base32-string c) "-" | |
490 | name))) | |
491 | ||
492 | (define (output-path output hash name) ; makeOutputPath | |
493 | "Return an output path for OUTPUT (the name of the output as a string) of | |
494 | the derivation called NAME with hash HASH." | |
495 | (store-path (string-append "output:" output) hash | |
496 | (if (string=? output "out") | |
497 | name | |
498 | (string-append name "-" output)))) | |
499 | ||
a987d2c0 LC |
500 | (define* (derivation store name builder args |
501 | #:key | |
502 | (system (%current-system)) (env-vars '()) | |
503 | (inputs '()) (outputs '("out")) | |
504 | hash hash-algo hash-mode) | |
26bbbb95 | 505 | "Build a derivation with the given arguments. Return the resulting |
fb3eec83 | 506 | store path and <derivation> object. When HASH, HASH-ALGO, and HASH-MODE |
26bbbb95 LC |
507 | are given, a fixed-output derivation is created---i.e., one whose result is |
508 | known in advance, such as a file download." | |
200dc937 LC |
509 | (define direct-store-path? |
510 | (let ((len (+ 1 (string-length (%store-prefix))))) | |
511 | (lambda (p) | |
512 | ;; Return #t if P is a store path, and not a sub-directory of a | |
513 | ;; store path. This predicate is needed because files *under* a | |
514 | ;; store path are not valid inputs. | |
515 | (and (store-path? p) | |
516 | (not (string-index (substring p len) #\/)))))) | |
517 | ||
26bbbb95 LC |
518 | (define (add-output-paths drv) |
519 | ;; Return DRV with an actual store path for each of its output and the | |
520 | ;; corresponding environment variable. | |
521 | (match drv | |
522 | (($ <derivation> outputs inputs sources | |
523 | system builder args env-vars) | |
524 | (let* ((drv-hash (derivation-hash drv)) | |
525 | (outputs (map (match-lambda | |
d9085c23 LC |
526 | ((output-name . ($ <derivation-output> |
527 | _ algo hash)) | |
528 | (let ((path (output-path output-name | |
529 | drv-hash name))) | |
530 | (cons output-name | |
531 | (make-derivation-output path algo | |
532 | hash))))) | |
533 | outputs))) | |
26bbbb95 LC |
534 | (make-derivation outputs inputs sources system builder args |
535 | (map (match-lambda | |
536 | ((name . value) | |
537 | (cons name | |
538 | (or (and=> (assoc-ref outputs name) | |
539 | derivation-output-path) | |
540 | value)))) | |
541 | env-vars)))))) | |
542 | ||
543 | (define (env-vars-with-empty-outputs) | |
544 | ;; Return a variant of ENV-VARS where each OUTPUTS is associated with an | |
561eaf71 | 545 | ;; empty string, even outputs that do not appear in ENV-VARS. |
26bbbb95 LC |
546 | (let ((e (map (match-lambda |
547 | ((name . val) | |
548 | (if (member name outputs) | |
549 | (cons name "") | |
550 | (cons name val)))) | |
551 | env-vars))) | |
561eaf71 LC |
552 | (fold (lambda (output-name env-vars) |
553 | (if (assoc output-name env-vars) | |
554 | env-vars | |
555 | (append env-vars `((,output-name . ""))))) | |
556 | e | |
557 | outputs))) | |
26bbbb95 LC |
558 | |
559 | (let* ((outputs (map (lambda (name) | |
560 | ;; Return outputs with an empty path. | |
561 | (cons name | |
562 | (make-derivation-output "" hash-algo hash))) | |
563 | outputs)) | |
564 | (inputs (map (match-lambda | |
200dc937 | 565 | (((? direct-store-path? input)) |
de4c3f26 | 566 | (make-derivation-input input '("out"))) |
200dc937 | 567 | (((? direct-store-path? input) sub-drvs ...) |
26bbbb95 LC |
568 | (make-derivation-input input sub-drvs)) |
569 | ((input . _) | |
570 | (let ((path (add-to-store store | |
571 | (basename input) | |
a9ebd9ef | 572 | #t "sha256" input))) |
26bbbb95 | 573 | (make-derivation-input path '())))) |
d26ad5e4 | 574 | (delete-duplicates inputs))) |
26bbbb95 LC |
575 | (env-vars (env-vars-with-empty-outputs)) |
576 | (drv-masked (make-derivation outputs | |
577 | (filter (compose derivation-path? | |
578 | derivation-input-path) | |
579 | inputs) | |
580 | (filter-map (lambda (i) | |
581 | (let ((p (derivation-input-path i))) | |
582 | (and (not (derivation-path? p)) | |
583 | p))) | |
584 | inputs) | |
585 | system builder args env-vars)) | |
586 | (drv (add-output-paths drv-masked))) | |
de4c3f26 | 587 | |
d66ac374 LC |
588 | ;; (write-derivation drv-masked (current-error-port)) |
589 | ;; (newline (current-error-port)) | |
fb3eec83 LC |
590 | (values (add-text-to-store store (string-append name ".drv") |
591 | (call-with-output-string | |
592 | (cut write-derivation drv <>)) | |
593 | (map derivation-input-path | |
594 | inputs)) | |
595 | drv))) | |
d9085c23 LC |
596 | |
597 | \f | |
598 | ;;; | |
599 | ;;; Guile-based builders. | |
600 | ;;; | |
601 | ||
602 | (define %guile-for-build | |
603 | ;; The derivation of the Guile to be used within the build environment, | |
604 | ;; when using `build-expression->derivation'. | |
b272c474 | 605 | (make-parameter #f)) |
d9085c23 | 606 | |
d9024884 LC |
607 | (define (parent-directories file-name) |
608 | "Return the list of parent dirs of FILE-NAME, in the order in which an | |
609 | `mkdir -p' implementation would make them." | |
610 | (let ((not-slash (char-set-complement (char-set #\/)))) | |
611 | (reverse | |
612 | (fold (lambda (dir result) | |
613 | (match result | |
614 | (() | |
615 | (list dir)) | |
616 | ((prev _ ...) | |
617 | (cons (string-append prev "/" dir) | |
618 | result)))) | |
619 | '() | |
620 | (remove (cut string=? <> ".") | |
621 | (string-tokenize (dirname file-name) not-slash)))))) | |
622 | ||
99634e3f | 623 | (define* (imported-files store files |
b272c474 LC |
624 | #:key (name "file-import") |
625 | (system (%current-system)) | |
626 | (guile (%guile-for-build))) | |
99634e3f LC |
627 | "Return a derivation that imports FILES into STORE. FILES must be a list |
628 | of (FINAL-PATH . FILE-NAME) pairs; each FILE-NAME is read from the file | |
629 | system, imported, and appears under FINAL-PATH in the resulting store path." | |
99634e3f LC |
630 | (let* ((files (map (match-lambda |
631 | ((final-path . file-name) | |
2acb2cb6 | 632 | (list final-path |
a9ebd9ef | 633 | (add-to-store store (basename final-path) #f |
99634e3f LC |
634 | "sha256" file-name)))) |
635 | files)) | |
636 | (builder | |
637 | `(begin | |
638 | (mkdir %output) (chdir %output) | |
639 | ,@(append-map (match-lambda | |
2acb2cb6 | 640 | ((final-path store-path) |
d9024884 | 641 | (append (match (parent-directories final-path) |
99634e3f LC |
642 | (() '()) |
643 | ((head ... tail) | |
644 | (append (map (lambda (d) | |
645 | `(false-if-exception | |
646 | (mkdir ,d))) | |
647 | head) | |
224f7ad6 LC |
648 | `((or (file-exists? ,tail) |
649 | (mkdir ,tail)))))) | |
99634e3f LC |
650 | `((symlink ,store-path ,final-path))))) |
651 | files)))) | |
ae39d1b2 | 652 | (build-expression->derivation store name system |
b272c474 LC |
653 | builder files |
654 | #:guile-for-build guile))) | |
99634e3f | 655 | |
3eb98237 LC |
656 | (define* (imported-modules store modules |
657 | #:key (name "module-import") | |
b272c474 | 658 | (system (%current-system)) |
8dcb0c55 LC |
659 | (guile (%guile-for-build)) |
660 | (module-path %load-path)) | |
3eb98237 | 661 | "Return a derivation that contains the source files of MODULES, a list of |
8dcb0c55 | 662 | module names such as `(ice-9 q)'. All of MODULES must be in the MODULE-PATH |
3eb98237 LC |
663 | search path." |
664 | ;; TODO: Determine the closure of MODULES, build the `.go' files, | |
665 | ;; canonicalize the source files through read/write, etc. | |
666 | (let ((files (map (lambda (m) | |
667 | (let ((f (string-append | |
668 | (string-join (map symbol->string m) "/") | |
669 | ".scm"))) | |
8dcb0c55 | 670 | (cons f (search-path module-path f)))) |
3eb98237 | 671 | modules))) |
b272c474 LC |
672 | (imported-files store files #:name name #:system system |
673 | #:guile guile))) | |
3eb98237 | 674 | |
d9024884 LC |
675 | (define* (compiled-modules store modules |
676 | #:key (name "module-import-compiled") | |
b272c474 | 677 | (system (%current-system)) |
8dcb0c55 LC |
678 | (guile (%guile-for-build)) |
679 | (module-path %load-path)) | |
d9024884 LC |
680 | "Return a derivation that builds a tree containing the `.go' files |
681 | corresponding to MODULES. All the MODULES are built in a context where | |
682 | they can refer to each other." | |
683 | (let* ((module-drv (imported-modules store modules | |
b272c474 | 684 | #:system system |
8dcb0c55 LC |
685 | #:guile guile |
686 | #:module-path module-path)) | |
d9024884 LC |
687 | (module-dir (derivation-path->output-path module-drv)) |
688 | (files (map (lambda (m) | |
689 | (let ((f (string-join (map symbol->string m) | |
690 | "/"))) | |
691 | (cons (string-append f ".go") | |
692 | (string-append module-dir "/" f ".scm")))) | |
693 | modules))) | |
694 | (define builder | |
695 | `(begin | |
696 | (use-modules (system base compile)) | |
697 | (let ((out (assoc-ref %outputs "out"))) | |
698 | (mkdir out) | |
699 | (chdir out)) | |
700 | ||
701 | (set! %load-path | |
702 | (cons ,module-dir %load-path)) | |
703 | ||
704 | ,@(map (match-lambda | |
705 | ((output . input) | |
706 | (let ((make-parent-dirs (map (lambda (dir) | |
707 | `(unless (file-exists? ,dir) | |
708 | (mkdir ,dir))) | |
709 | (parent-directories output)))) | |
710 | `(begin | |
711 | ,@make-parent-dirs | |
712 | (compile-file ,input | |
713 | #:output-file ,output | |
714 | #:opts %auto-compilation-options))))) | |
715 | files))) | |
716 | ||
717 | (build-expression->derivation store name system builder | |
b272c474 LC |
718 | `(("modules" ,module-drv)) |
719 | #:guile-for-build guile))) | |
3eb98237 | 720 | |
d9085c23 | 721 | (define* (build-expression->derivation store name system exp inputs |
9bc07f4d | 722 | #:key (outputs '("out")) |
3eb98237 | 723 | hash hash-algo |
4c1eddf7 | 724 | (env-vars '()) |
6dd7787c LC |
725 | (modules '()) |
726 | guile-for-build) | |
874e6874 LC |
727 | "Return a derivation that executes Scheme expression EXP as a builder |
728 | for derivation NAME. INPUTS must be a list of (NAME DRV-PATH SUB-DRV) | |
729 | tuples; when SUB-DRV is omitted, \"out\" is assumed. MODULES is a list | |
730 | of names of Guile modules from the current search path to be copied in | |
731 | the store, compiled, and made available in the load path during the | |
732 | execution of EXP. | |
733 | ||
734 | EXP is evaluated in an environment where %OUTPUT is bound to the main | |
735 | output path, %OUTPUTS is bound to a list of output/path pairs, and where | |
736 | %BUILD-INPUTS is bound to an alist of string/output-path pairs made from | |
737 | INPUTS. Optionally, ENV-VARS is a list of string pairs specifying the | |
738 | name and value of environment variables visible to the builder. The | |
739 | builder terminates by passing the result of EXP to `exit'; thus, when | |
740 | EXP returns #f, the build is considered to have failed. | |
6dd7787c LC |
741 | |
742 | EXP is built using GUILE-FOR-BUILD (a derivation). When GUILE-FOR-BUILD is | |
743 | omitted or is #f, the value of the `%guile-for-build' fluid is used instead." | |
b272c474 LC |
744 | (define guile-drv |
745 | (or guile-for-build (%guile-for-build))) | |
746 | ||
d9085c23 | 747 | (define guile |
b272c474 | 748 | (string-append (derivation-path->output-path guile-drv) |
d9085c23 LC |
749 | "/bin/guile")) |
750 | ||
0d56a551 LC |
751 | (define module-form? |
752 | (match-lambda | |
a987d2c0 LC |
753 | (((or 'define-module 'use-modules) _ ...) #t) |
754 | (_ #f))) | |
0d56a551 | 755 | |
7bdd1f0e LC |
756 | (define source-path |
757 | ;; When passed an input that is a source, return its path; otherwise | |
758 | ;; return #f. | |
759 | (match-lambda | |
760 | ((_ path _ ...) | |
761 | (and (not (derivation-path? path)) | |
762 | path)))) | |
763 | ||
d9085c23 | 764 | (let* ((prologue `(begin |
0d56a551 LC |
765 | ,@(match exp |
766 | ((_ ...) | |
767 | ;; Module forms must appear at the top-level so | |
768 | ;; that any macros they export can be expanded. | |
769 | (filter module-form? exp)) | |
770 | (_ `(,exp))) | |
771 | ||
d9085c23 | 772 | (define %output (getenv "out")) |
9bc07f4d LC |
773 | (define %outputs |
774 | (map (lambda (o) | |
775 | (cons o (getenv o))) | |
776 | ',outputs)) | |
d9085c23 LC |
777 | (define %build-inputs |
778 | ',(map (match-lambda | |
2acb2cb6 LC |
779 | ((name drv . rest) |
780 | (let ((sub (match rest | |
781 | (() "out") | |
782 | ((x) x)))) | |
783 | (cons name | |
784 | (if (derivation-path? drv) | |
785 | (derivation-path->output-path drv | |
786 | sub) | |
787 | drv))))) | |
d44bc84b LC |
788 | inputs)) |
789 | ||
d9024884 LC |
790 | ,@(if (null? modules) |
791 | '() | |
792 | ;; Remove our own settings. | |
793 | '((unsetenv "GUILE_LOAD_COMPILED_PATH"))) | |
794 | ||
d44bc84b LC |
795 | ;; Guile sets it, but remove it to avoid conflicts when |
796 | ;; building Guile-using packages. | |
797 | (unsetenv "LD_LIBRARY_PATH"))) | |
d9085c23 LC |
798 | (builder (add-text-to-store store |
799 | (string-append name "-guile-builder") | |
0bb1aa9e LC |
800 | |
801 | ;; Explicitly use UTF-8 for determinism, | |
802 | ;; and also because UTF-8 output is faster. | |
803 | (with-fluids ((%default-port-encoding | |
804 | "UTF-8")) | |
805 | (call-with-output-string | |
806 | (lambda (port) | |
807 | (write prologue port) | |
808 | (write | |
809 | `(exit | |
810 | ,(match exp | |
811 | ((_ ...) | |
812 | (remove module-form? exp)) | |
813 | (_ `(,exp)))) | |
814 | port)))) | |
7bdd1f0e LC |
815 | |
816 | ;; The references don't really matter | |
817 | ;; since the builder is always used in | |
818 | ;; conjunction with the drv that needs | |
819 | ;; it. For clarity, we add references | |
820 | ;; to the subset of INPUTS that are | |
821 | ;; sources, avoiding references to other | |
822 | ;; .drv; otherwise, BUILDER's hash would | |
823 | ;; depend on those, even if they are | |
824 | ;; fixed-output. | |
825 | (filter-map source-path inputs))) | |
826 | ||
d9024884 | 827 | (mod-drv (and (pair? modules) |
ae39d1b2 LC |
828 | (imported-modules store modules |
829 | #:guile guile-drv | |
830 | #:system system))) | |
3eb98237 | 831 | (mod-dir (and mod-drv |
d9024884 LC |
832 | (derivation-path->output-path mod-drv))) |
833 | (go-drv (and (pair? modules) | |
ae39d1b2 LC |
834 | (compiled-modules store modules |
835 | #:guile guile-drv | |
836 | #:system system))) | |
d9024884 LC |
837 | (go-dir (and go-drv |
838 | (derivation-path->output-path go-drv)))) | |
a987d2c0 | 839 | (derivation store name guile |
3eb98237 LC |
840 | `("--no-auto-compile" |
841 | ,@(if mod-dir `("-L" ,mod-dir) '()) | |
842 | ,builder) | |
d9024884 | 843 | |
a987d2c0 LC |
844 | #:system system |
845 | ||
846 | #:inputs `((,(or guile-for-build (%guile-for-build))) | |
847 | (,builder) | |
848 | ,@(map cdr inputs) | |
849 | ,@(if mod-drv `((,mod-drv) (,go-drv)) '())) | |
850 | ||
d9024884 LC |
851 | ;; When MODULES is non-empty, shamelessly clobber |
852 | ;; $GUILE_LOAD_COMPILED_PATH. | |
a987d2c0 LC |
853 | #:env-vars (if go-dir |
854 | `(("GUILE_LOAD_COMPILED_PATH" . ,go-dir) | |
855 | ,@(alist-delete "GUILE_LOAD_COMPILED_PATH" | |
856 | env-vars)) | |
857 | env-vars) | |
858 | ||
9bc07f4d LC |
859 | #:hash hash #:hash-algo hash-algo |
860 | #:outputs outputs))) |