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21b679f6 | 1 | ;;; GNU Guix --- Functional package management for GNU |
7adf9b84 | 2 | ;;; Copyright © 2014, 2015, 2016 Ludovic Courtès <ludo@gnu.org> |
21b679f6 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 gexp) | |
e87f0591 | 20 | #:use-module (guix store) |
21b679f6 | 21 | #:use-module (guix monads) |
e87f0591 | 22 | #:use-module (guix derivations) |
7adf9b84 | 23 | #:use-module (guix grafts) |
aa72d9af | 24 | #:use-module (guix utils) |
21b679f6 LC |
25 | #:use-module (srfi srfi-1) |
26 | #:use-module (srfi srfi-9) | |
7560b00b | 27 | #:use-module (srfi srfi-9 gnu) |
21b679f6 LC |
28 | #:use-module (srfi srfi-26) |
29 | #:use-module (ice-9 match) | |
30 | #:export (gexp | |
31 | gexp? | |
0bb9929e | 32 | with-imported-modules |
0dbea56b LC |
33 | |
34 | gexp-input | |
35 | gexp-input? | |
558e8b11 | 36 | |
d9ae938f LC |
37 | local-file |
38 | local-file? | |
74d441ab | 39 | local-file-file |
9d3994f7 | 40 | local-file-absolute-file-name |
74d441ab LC |
41 | local-file-name |
42 | local-file-recursive? | |
0dbea56b | 43 | |
558e8b11 LC |
44 | plain-file |
45 | plain-file? | |
46 | plain-file-name | |
47 | plain-file-content | |
48 | ||
91937029 LC |
49 | computed-file |
50 | computed-file? | |
51 | computed-file-name | |
52 | computed-file-gexp | |
53 | computed-file-modules | |
54 | computed-file-options | |
55 | ||
15a01c72 LC |
56 | program-file |
57 | program-file? | |
58 | program-file-name | |
59 | program-file-gexp | |
60 | program-file-modules | |
61 | program-file-guile | |
62 | ||
e1c153e0 LC |
63 | scheme-file |
64 | scheme-file? | |
65 | scheme-file-name | |
66 | scheme-file-gexp | |
67 | ||
21b679f6 LC |
68 | gexp->derivation |
69 | gexp->file | |
462a3fa3 | 70 | gexp->script |
aa72d9af | 71 | text-file* |
b751cde3 | 72 | mixed-text-file |
aa72d9af LC |
73 | imported-files |
74 | imported-modules | |
ff40e9b7 LC |
75 | compiled-modules |
76 | ||
77 | define-gexp-compiler | |
6b6298ae | 78 | gexp-compiler? |
c2b84676 | 79 | lower-object |
6b6298ae LC |
80 | |
81 | lower-inputs)) | |
21b679f6 LC |
82 | |
83 | ;;; Commentary: | |
84 | ;;; | |
85 | ;;; This module implements "G-expressions", or "gexps". Gexps are like | |
86 | ;;; S-expressions (sexps), with two differences: | |
87 | ;;; | |
88 | ;;; 1. References (un-quotations) to derivations or packages in a gexp are | |
667b2508 LC |
89 | ;;; replaced by the corresponding output file name; in addition, the |
90 | ;;; 'ungexp-native' unquote-like form allows code to explicitly refer to | |
91 | ;;; the native code of a given package, in case of cross-compilation; | |
21b679f6 LC |
92 | ;;; |
93 | ;;; 2. Gexps embed information about the derivations they refer to. | |
94 | ;;; | |
95 | ;;; Gexps make it easy to write to files Scheme code that refers to store | |
96 | ;;; items, or to write Scheme code to build derivations. | |
97 | ;;; | |
98 | ;;; Code: | |
99 | ||
100 | ;; "G expressions". | |
101 | (define-record-type <gexp> | |
0bb9929e | 102 | (make-gexp references modules proc) |
21b679f6 | 103 | gexp? |
affd7761 | 104 | (references gexp-references) ;list of <gexp-input> |
0bb9929e | 105 | (modules gexp-self-modules) ;list of module names |
affd7761 | 106 | (proc gexp-proc)) ;procedure |
21b679f6 | 107 | |
7560b00b LC |
108 | (define (write-gexp gexp port) |
109 | "Write GEXP on PORT." | |
110 | (display "#<gexp " port) | |
2cf0ea0d LC |
111 | |
112 | ;; Try to write the underlying sexp. Now, this trick doesn't work when | |
113 | ;; doing things like (ungexp-splicing (gexp ())) because GEXP's procedure | |
114 | ;; tries to use 'append' on that, which fails with wrong-type-arg. | |
115 | (false-if-exception | |
667b2508 | 116 | (write (apply (gexp-proc gexp) |
affd7761 | 117 | (gexp-references gexp)) |
667b2508 | 118 | port)) |
7560b00b LC |
119 | (format port " ~a>" |
120 | (number->string (object-address gexp) 16))) | |
121 | ||
122 | (set-record-type-printer! <gexp> write-gexp) | |
123 | ||
bcb13287 LC |
124 | \f |
125 | ;;; | |
126 | ;;; Methods. | |
127 | ;;; | |
128 | ||
129 | ;; Compiler for a type of objects that may be introduced in a gexp. | |
130 | (define-record-type <gexp-compiler> | |
131 | (gexp-compiler predicate lower) | |
132 | gexp-compiler? | |
133 | (predicate gexp-compiler-predicate) | |
134 | (lower gexp-compiler-lower)) | |
135 | ||
136 | (define %gexp-compilers | |
137 | ;; List of <gexp-compiler>. | |
138 | '()) | |
139 | ||
140 | (define (register-compiler! compiler) | |
141 | "Register COMPILER as a gexp compiler." | |
142 | (set! %gexp-compilers (cons compiler %gexp-compilers))) | |
143 | ||
144 | (define (lookup-compiler object) | |
145 | "Search a compiler for OBJECT. Upon success, return the three argument | |
146 | procedure to lower it; otherwise return #f." | |
147 | (any (match-lambda | |
148 | (($ <gexp-compiler> predicate lower) | |
149 | (and (predicate object) lower))) | |
150 | %gexp-compilers)) | |
151 | ||
c2b84676 LC |
152 | (define* (lower-object obj |
153 | #:optional (system (%current-system)) | |
154 | #:key target) | |
155 | "Return as a value in %STORE-MONAD the derivation or store item | |
156 | corresponding to OBJ for SYSTEM, cross-compiling for TARGET if TARGET is true. | |
157 | OBJ must be an object that has an associated gexp compiler, such as a | |
158 | <package>." | |
159 | (let ((lower (lookup-compiler obj))) | |
160 | (lower obj system target))) | |
161 | ||
bcb13287 LC |
162 | (define-syntax-rule (define-gexp-compiler (name (param predicate) |
163 | system target) | |
164 | body ...) | |
165 | "Define NAME as a compiler for objects matching PREDICATE encountered in | |
166 | gexps. BODY must return a derivation for PARAM, an object that matches | |
167 | PREDICATE, for SYSTEM and TARGET (the latter of which is #f except when | |
168 | cross-compiling.)" | |
169 | (begin | |
170 | (define name | |
171 | (gexp-compiler predicate | |
172 | (lambda (param system target) | |
173 | body ...))) | |
174 | (register-compiler! name))) | |
175 | ||
2924f0d6 LC |
176 | (define-gexp-compiler (derivation-compiler (drv derivation?) system target) |
177 | ;; Derivations are the lowest-level representation, so this is the identity | |
178 | ;; compiler. | |
179 | (with-monad %store-monad | |
180 | (return drv))) | |
181 | ||
bcb13287 | 182 | \f |
d9ae938f | 183 | ;;; |
558e8b11 | 184 | ;;; File declarations. |
d9ae938f LC |
185 | ;;; |
186 | ||
9d3994f7 LC |
187 | ;; A local file name. FILE is the file name the user entered, which can be a |
188 | ;; relative file name, and ABSOLUTE is a promise that computes its canonical | |
189 | ;; absolute file name. We keep it in a promise to compute it lazily and avoid | |
190 | ;; repeated 'stat' calls. | |
d9ae938f | 191 | (define-record-type <local-file> |
0687fc9c | 192 | (%%local-file file absolute name recursive? select?) |
d9ae938f LC |
193 | local-file? |
194 | (file local-file-file) ;string | |
9d3994f7 | 195 | (absolute %local-file-absolute-file-name) ;promise string |
d9ae938f | 196 | (name local-file-name) ;string |
0687fc9c LC |
197 | (recursive? local-file-recursive?) ;Boolean |
198 | (select? local-file-select?)) ;string stat -> Boolean | |
199 | ||
200 | (define (true file stat) #t) | |
d9ae938f | 201 | |
9d3994f7 | 202 | (define* (%local-file file promise #:optional (name (basename file)) |
0687fc9c | 203 | #:key recursive? (select? true)) |
9d3994f7 LC |
204 | ;; This intermediate procedure is part of our ABI, but the underlying |
205 | ;; %%LOCAL-FILE is not. | |
0687fc9c | 206 | (%%local-file file promise name recursive? select?)) |
9d3994f7 | 207 | |
9d3994f7 LC |
208 | (define (absolute-file-name file directory) |
209 | "Return the canonical absolute file name for FILE, which lives in the | |
210 | vicinity of DIRECTORY." | |
211 | (canonicalize-path | |
212 | (cond ((string-prefix? "/" file) file) | |
213 | ((not directory) file) | |
214 | ((string-prefix? "/" directory) | |
215 | (string-append directory "/" file)) | |
216 | (else file)))) | |
217 | ||
218 | (define-syntax-rule (local-file file rest ...) | |
d9ae938f | 219 | "Return an object representing local file FILE to add to the store; this |
9d3994f7 LC |
220 | object can be used in a gexp. If FILE is a relative file name, it is looked |
221 | up relative to the source file where this form appears. FILE will be added to | |
222 | the store under NAME--by default the base name of FILE. | |
d9ae938f LC |
223 | |
224 | When RECURSIVE? is true, the contents of FILE are added recursively; if FILE | |
225 | designates a flat file and RECURSIVE? is true, its contents are added, and its | |
226 | permission bits are kept. | |
227 | ||
0687fc9c LC |
228 | When RECURSIVE? is true, call (SELECT? FILE STAT) for each directory entry, |
229 | where FILE is the entry's absolute file name and STAT is the result of | |
230 | 'lstat'; exclude entries for which SELECT? does not return true. | |
231 | ||
d9ae938f | 232 | This is the declarative counterpart of the 'interned-file' monadic procedure." |
9d3994f7 LC |
233 | (%local-file file |
234 | (delay (absolute-file-name file (current-source-directory))) | |
235 | rest ...)) | |
236 | ||
237 | (define (local-file-absolute-file-name file) | |
238 | "Return the absolute file name for FILE, a <local-file> instance. A | |
239 | 'system-error' exception is raised if FILE could not be found." | |
240 | (force (%local-file-absolute-file-name file))) | |
d9ae938f LC |
241 | |
242 | (define-gexp-compiler (local-file-compiler (file local-file?) system target) | |
243 | ;; "Compile" FILE by adding it to the store. | |
244 | (match file | |
0687fc9c | 245 | (($ <local-file> file (= force absolute) name recursive? select?) |
9d3994f7 LC |
246 | ;; Canonicalize FILE so that if it's a symlink, it is resolved. Failing |
247 | ;; to do that, when RECURSIVE? is #t, we could end up creating a dangling | |
248 | ;; symlink in the store, and when RECURSIVE? is #f 'add-to-store' would | |
249 | ;; just throw an error, both of which are inconvenient. | |
0687fc9c LC |
250 | (interned-file absolute name |
251 | #:recursive? recursive? #:select? select?)))) | |
d9ae938f | 252 | |
558e8b11 LC |
253 | (define-record-type <plain-file> |
254 | (%plain-file name content references) | |
255 | plain-file? | |
256 | (name plain-file-name) ;string | |
257 | (content plain-file-content) ;string | |
258 | (references plain-file-references)) ;list (currently unused) | |
259 | ||
260 | (define (plain-file name content) | |
261 | "Return an object representing a text file called NAME with the given | |
262 | CONTENT (a string) to be added to the store. | |
263 | ||
264 | This is the declarative counterpart of 'text-file'." | |
265 | ;; XXX: For now just ignore 'references' because it's not clear how to use | |
266 | ;; them in a declarative context. | |
267 | (%plain-file name content '())) | |
268 | ||
269 | (define-gexp-compiler (plain-file-compiler (file plain-file?) system target) | |
270 | ;; "Compile" FILE by adding it to the store. | |
271 | (match file | |
272 | (($ <plain-file> name content references) | |
273 | (text-file name content references)))) | |
274 | ||
91937029 LC |
275 | (define-record-type <computed-file> |
276 | (%computed-file name gexp modules options) | |
277 | computed-file? | |
278 | (name computed-file-name) ;string | |
279 | (gexp computed-file-gexp) ;gexp | |
280 | (modules computed-file-modules) ;list of module names | |
281 | (options computed-file-options)) ;list of arguments | |
282 | ||
283 | (define* (computed-file name gexp | |
284 | #:key (modules '()) (options '(#:local-build? #t))) | |
285 | "Return an object representing the store item NAME, a file or directory | |
286 | computed by GEXP. MODULES specifies the set of modules visible in the | |
287 | execution context of GEXP. OPTIONS is a list of additional arguments to pass | |
288 | to 'gexp->derivation'. | |
289 | ||
290 | This is the declarative counterpart of 'gexp->derivation'." | |
291 | (%computed-file name gexp modules options)) | |
292 | ||
293 | (define-gexp-compiler (computed-file-compiler (file computed-file?) | |
294 | system target) | |
295 | ;; Compile FILE by returning a derivation whose build expression is its | |
296 | ;; gexp. | |
297 | (match file | |
298 | (($ <computed-file> name gexp modules options) | |
299 | (apply gexp->derivation name gexp #:modules modules options)))) | |
300 | ||
15a01c72 LC |
301 | (define-record-type <program-file> |
302 | (%program-file name gexp modules guile) | |
303 | program-file? | |
304 | (name program-file-name) ;string | |
305 | (gexp program-file-gexp) ;gexp | |
306 | (modules program-file-modules) ;list of module names | |
307 | (guile program-file-guile)) ;package | |
308 | ||
309 | (define* (program-file name gexp | |
310 | #:key (modules '()) (guile #f)) | |
311 | "Return an object representing the executable store item NAME that runs | |
312 | GEXP. GUILE is the Guile package used to execute that script, and MODULES is | |
313 | the list of modules visible to that script. | |
314 | ||
315 | This is the declarative counterpart of 'gexp->script'." | |
316 | (%program-file name gexp modules guile)) | |
317 | ||
318 | (define-gexp-compiler (program-file-compiler (file program-file?) | |
319 | system target) | |
320 | ;; Compile FILE by returning a derivation that builds the script. | |
321 | (match file | |
322 | (($ <program-file> name gexp modules guile) | |
323 | (gexp->script name gexp | |
324 | #:modules modules | |
325 | #:guile (or guile (default-guile)))))) | |
326 | ||
e1c153e0 LC |
327 | (define-record-type <scheme-file> |
328 | (%scheme-file name gexp) | |
329 | scheme-file? | |
330 | (name scheme-file-name) ;string | |
331 | (gexp scheme-file-gexp)) ;gexp | |
332 | ||
333 | (define* (scheme-file name gexp) | |
334 | "Return an object representing the Scheme file NAME that contains GEXP. | |
335 | ||
336 | This is the declarative counterpart of 'gexp->file'." | |
337 | (%scheme-file name gexp)) | |
338 | ||
339 | (define-gexp-compiler (scheme-file-compiler (file scheme-file?) | |
340 | system target) | |
341 | ;; Compile FILE by returning a derivation that builds the file. | |
342 | (match file | |
343 | (($ <scheme-file> name gexp) | |
344 | (gexp->file name gexp)))) | |
345 | ||
d9ae938f | 346 | \f |
bcb13287 LC |
347 | ;;; |
348 | ;;; Inputs & outputs. | |
349 | ;;; | |
350 | ||
e39d1461 LC |
351 | ;; The input of a gexp. |
352 | (define-record-type <gexp-input> | |
0dbea56b | 353 | (%gexp-input thing output native?) |
e39d1461 LC |
354 | gexp-input? |
355 | (thing gexp-input-thing) ;<package> | <origin> | <derivation> | ... | |
356 | (output gexp-input-output) ;string | |
357 | (native? gexp-input-native?)) ;Boolean | |
358 | ||
f7328634 LC |
359 | (define (write-gexp-input input port) |
360 | (match input | |
361 | (($ <gexp-input> thing output #f) | |
362 | (format port "#<gexp-input ~s:~a>" thing output)) | |
363 | (($ <gexp-input> thing output #t) | |
364 | (format port "#<gexp-input native ~s:~a>" thing output)))) | |
365 | ||
366 | (set-record-type-printer! <gexp-input> write-gexp-input) | |
367 | ||
0dbea56b LC |
368 | (define* (gexp-input thing ;convenience procedure |
369 | #:optional (output "out") | |
370 | #:key native?) | |
371 | "Return a new <gexp-input> for the OUTPUT of THING; NATIVE? determines | |
372 | whether this should be considered a \"native\" input or not." | |
373 | (%gexp-input thing output native?)) | |
374 | ||
21b679f6 LC |
375 | ;; Reference to one of the derivation's outputs, for gexps used in |
376 | ;; derivations. | |
1e87da58 LC |
377 | (define-record-type <gexp-output> |
378 | (gexp-output name) | |
379 | gexp-output? | |
380 | (name gexp-output-name)) | |
21b679f6 | 381 | |
f7328634 LC |
382 | (define (write-gexp-output output port) |
383 | (match output | |
384 | (($ <gexp-output> name) | |
385 | (format port "#<gexp-output ~a>" name)))) | |
386 | ||
387 | (set-record-type-printer! <gexp-output> write-gexp-output) | |
388 | ||
0bb9929e LC |
389 | (define (gexp-modules gexp) |
390 | "Return the list of Guile module names GEXP relies on." | |
391 | (delete-duplicates | |
392 | (append (gexp-self-modules gexp) | |
393 | (append-map (match-lambda | |
394 | (($ <gexp-input> (? gexp? exp)) | |
395 | (gexp-modules exp)) | |
396 | (($ <gexp-input> (lst ...)) | |
397 | (append-map (lambda (item) | |
398 | (if (gexp? item) | |
399 | (gexp-modules item) | |
400 | '())) | |
401 | lst)) | |
402 | (_ | |
403 | '())) | |
404 | (gexp-references gexp))))) | |
405 | ||
21b679f6 LC |
406 | (define raw-derivation |
407 | (store-lift derivation)) | |
408 | ||
68a61e9f LC |
409 | (define* (lower-inputs inputs |
410 | #:key system target) | |
411 | "Turn any package from INPUTS into a derivation for SYSTEM; return the | |
412 | corresponding input list as a monadic value. When TARGET is true, use it as | |
413 | the cross-compilation target triplet." | |
21b679f6 LC |
414 | (with-monad %store-monad |
415 | (sequence %store-monad | |
416 | (map (match-lambda | |
2242ff45 | 417 | (((? struct? thing) sub-drv ...) |
c2b84676 LC |
418 | (mlet %store-monad ((drv (lower-object |
419 | thing system #:target target))) | |
2242ff45 LC |
420 | (return `(,drv ,@sub-drv)))) |
421 | (input | |
422 | (return input))) | |
21b679f6 LC |
423 | inputs)))) |
424 | ||
b53833b2 LC |
425 | (define* (lower-reference-graphs graphs #:key system target) |
426 | "Given GRAPHS, a list of (FILE-NAME INPUT ...) lists for use as a | |
427 | #:reference-graphs argument, lower it such that each INPUT is replaced by the | |
428 | corresponding derivation." | |
429 | (match graphs | |
430 | (((file-names . inputs) ...) | |
431 | (mlet %store-monad ((inputs (lower-inputs inputs | |
432 | #:system system | |
433 | #:target target))) | |
434 | (return (map cons file-names inputs)))))) | |
435 | ||
c8351d9a LC |
436 | (define* (lower-references lst #:key system target) |
437 | "Based on LST, a list of output names and packages, return a list of output | |
438 | names and file names suitable for the #:allowed-references argument to | |
439 | 'derivation'." | |
440 | ;; XXX: Currently outputs other than "out" are not supported, and things | |
441 | ;; other than packages aren't either. | |
442 | (with-monad %store-monad | |
443 | (define lower | |
444 | (match-lambda | |
445 | ((? string? output) | |
446 | (return output)) | |
accb682c | 447 | (($ <gexp-input> thing output native?) |
c2b84676 LC |
448 | (mlet %store-monad ((drv (lower-object thing system |
449 | #:target (if native? | |
450 | #f target)))) | |
accb682c | 451 | (return (derivation->output-path drv output)))) |
bcb13287 | 452 | (thing |
c2b84676 LC |
453 | (mlet %store-monad ((drv (lower-object thing system |
454 | #:target target))) | |
c8351d9a LC |
455 | (return (derivation->output-path drv)))))) |
456 | ||
457 | (sequence %store-monad (map lower lst)))) | |
458 | ||
ff40e9b7 LC |
459 | (define default-guile-derivation |
460 | ;; Here we break the abstraction by talking to the higher-level layer. | |
461 | ;; Thus, do the resolution lazily to hide the circular dependency. | |
462 | (let ((proc (delay | |
463 | (let ((iface (resolve-interface '(guix packages)))) | |
464 | (module-ref iface 'default-guile-derivation))))) | |
465 | (lambda (system) | |
466 | ((force proc) system)))) | |
467 | ||
21b679f6 LC |
468 | (define* (gexp->derivation name exp |
469 | #:key | |
68a61e9f | 470 | system (target 'current) |
21b679f6 LC |
471 | hash hash-algo recursive? |
472 | (env-vars '()) | |
473 | (modules '()) | |
4684f301 | 474 | (module-path %load-path) |
21b679f6 | 475 | (guile-for-build (%guile-for-build)) |
ce45eb4c | 476 | (graft? (%graft?)) |
21b679f6 | 477 | references-graphs |
3f4ecf32 | 478 | allowed-references disallowed-references |
c0468155 | 479 | leaked-env-vars |
0309e1b0 LC |
480 | local-build? (substitutable? #t) |
481 | (script-name (string-append name "-builder"))) | |
21b679f6 | 482 | "Return a derivation NAME that runs EXP (a gexp) with GUILE-FOR-BUILD (a |
0309e1b0 LC |
483 | derivation) on SYSTEM; EXP is stored in a file called SCRIPT-NAME. When |
484 | TARGET is true, it is used as the cross-compilation target triplet for | |
485 | packages referred to by EXP. | |
21b679f6 | 486 | |
0bb9929e LC |
487 | MODULES is deprecated in favor of 'with-imported-modules'. Its meaning is to |
488 | make MODULES available in the evaluation context of EXP; MODULES is a list of | |
4684f301 | 489 | names of Guile modules searched in MODULE-PATH to be copied in the store, |
21b679f6 LC |
490 | compiled, and made available in the load path during the execution of |
491 | EXP---e.g., '((guix build utils) (guix build gnu-build-system)). | |
492 | ||
ce45eb4c LC |
493 | GRAFT? determines whether packages referred to by EXP should be grafted when |
494 | applicable. | |
495 | ||
b53833b2 LC |
496 | When REFERENCES-GRAPHS is true, it must be a list of tuples of one of the |
497 | following forms: | |
498 | ||
499 | (FILE-NAME PACKAGE) | |
500 | (FILE-NAME PACKAGE OUTPUT) | |
501 | (FILE-NAME DERIVATION) | |
502 | (FILE-NAME DERIVATION OUTPUT) | |
503 | (FILE-NAME STORE-ITEM) | |
504 | ||
505 | The right-hand-side of each element of REFERENCES-GRAPHS is automatically made | |
506 | an input of the build process of EXP. In the build environment, each | |
507 | FILE-NAME contains the reference graph of the corresponding item, in a simple | |
508 | text format. | |
509 | ||
c8351d9a LC |
510 | ALLOWED-REFERENCES must be either #f or a list of output names and packages. |
511 | In the latter case, the list denotes store items that the result is allowed to | |
512 | refer to. Any reference to another store item will lead to a build error. | |
3f4ecf32 LC |
513 | Similarly for DISALLOWED-REFERENCES, which can list items that must not be |
514 | referenced by the outputs. | |
b53833b2 | 515 | |
21b679f6 | 516 | The other arguments are as for 'derivation'." |
0bb9929e LC |
517 | (define %modules |
518 | (delete-duplicates | |
519 | (append modules (gexp-modules exp)))) | |
21b679f6 LC |
520 | (define outputs (gexp-outputs exp)) |
521 | ||
b53833b2 LC |
522 | (define (graphs-file-names graphs) |
523 | ;; Return a list of (FILE-NAME . STORE-PATH) pairs made from GRAPHS. | |
524 | (map (match-lambda | |
2924f0d6 | 525 | ;; TODO: Remove 'derivation?' special cases. |
b53833b2 LC |
526 | ((file-name (? derivation? drv)) |
527 | (cons file-name (derivation->output-path drv))) | |
528 | ((file-name (? derivation? drv) sub-drv) | |
529 | (cons file-name (derivation->output-path drv sub-drv))) | |
530 | ((file-name thing) | |
531 | (cons file-name thing))) | |
532 | graphs)) | |
533 | ||
ce45eb4c LC |
534 | (mlet* %store-monad (;; The following binding forces '%current-system' and |
535 | ;; '%current-target-system' to be looked up at >>= | |
536 | ;; time. | |
537 | (graft? (set-grafting graft?)) | |
68a61e9f | 538 | |
5d098459 | 539 | (system -> (or system (%current-system))) |
68a61e9f LC |
540 | (target -> (if (eq? target 'current) |
541 | (%current-target-system) | |
542 | target)) | |
667b2508 | 543 | (normals (lower-inputs (gexp-inputs exp) |
68a61e9f LC |
544 | #:system system |
545 | #:target target)) | |
667b2508 LC |
546 | (natives (lower-inputs (gexp-native-inputs exp) |
547 | #:system system | |
548 | #:target #f)) | |
549 | (inputs -> (append normals natives)) | |
68a61e9f LC |
550 | (sexp (gexp->sexp exp |
551 | #:system system | |
552 | #:target target)) | |
0309e1b0 | 553 | (builder (text-file script-name |
21b679f6 LC |
554 | (object->string sexp))) |
555 | (modules (if (pair? %modules) | |
556 | (imported-modules %modules | |
557 | #:system system | |
4684f301 | 558 | #:module-path module-path |
21b679f6 LC |
559 | #:guile guile-for-build) |
560 | (return #f))) | |
561 | (compiled (if (pair? %modules) | |
562 | (compiled-modules %modules | |
563 | #:system system | |
4684f301 | 564 | #:module-path module-path |
21b679f6 LC |
565 | #:guile guile-for-build) |
566 | (return #f))) | |
b53833b2 LC |
567 | (graphs (if references-graphs |
568 | (lower-reference-graphs references-graphs | |
569 | #:system system | |
570 | #:target target) | |
571 | (return #f))) | |
c8351d9a LC |
572 | (allowed (if allowed-references |
573 | (lower-references allowed-references | |
574 | #:system system | |
575 | #:target target) | |
576 | (return #f))) | |
3f4ecf32 LC |
577 | (disallowed (if disallowed-references |
578 | (lower-references disallowed-references | |
579 | #:system system | |
580 | #:target target) | |
581 | (return #f))) | |
21b679f6 LC |
582 | (guile (if guile-for-build |
583 | (return guile-for-build) | |
ff40e9b7 | 584 | (default-guile-derivation system)))) |
ce45eb4c LC |
585 | (mbegin %store-monad |
586 | (set-grafting graft?) ;restore the initial setting | |
587 | (raw-derivation name | |
588 | (string-append (derivation->output-path guile) | |
589 | "/bin/guile") | |
590 | `("--no-auto-compile" | |
591 | ,@(if (pair? %modules) | |
592 | `("-L" ,(derivation->output-path modules) | |
593 | "-C" ,(derivation->output-path compiled)) | |
594 | '()) | |
595 | ,builder) | |
596 | #:outputs outputs | |
597 | #:env-vars env-vars | |
598 | #:system system | |
599 | #:inputs `((,guile) | |
600 | (,builder) | |
601 | ,@(if modules | |
602 | `((,modules) (,compiled) ,@inputs) | |
603 | inputs) | |
604 | ,@(match graphs | |
605 | (((_ . inputs) ...) inputs) | |
606 | (_ '()))) | |
607 | #:hash hash #:hash-algo hash-algo #:recursive? recursive? | |
608 | #:references-graphs (and=> graphs graphs-file-names) | |
609 | #:allowed-references allowed | |
3f4ecf32 | 610 | #:disallowed-references disallowed |
c0468155 | 611 | #:leaked-env-vars leaked-env-vars |
4a6aeb67 LC |
612 | #:local-build? local-build? |
613 | #:substitutable? substitutable?)))) | |
21b679f6 | 614 | |
1123759b LC |
615 | (define* (gexp-inputs exp #:key native?) |
616 | "Return the input list for EXP. When NATIVE? is true, return only native | |
617 | references; otherwise, return only non-native references." | |
21b679f6 LC |
618 | (define (add-reference-inputs ref result) |
619 | (match ref | |
1123759b LC |
620 | (($ <gexp-input> (? gexp? exp) _ #t) |
621 | (if native? | |
622 | (append (gexp-inputs exp) | |
623 | (gexp-inputs exp #:native? #t) | |
624 | result) | |
625 | result)) | |
626 | (($ <gexp-input> (? gexp? exp) _ #f) | |
627 | (if native? | |
628 | (append (gexp-inputs exp #:native? #t) | |
629 | result) | |
630 | (append (gexp-inputs exp) | |
631 | result))) | |
e39d1461 LC |
632 | (($ <gexp-input> (? string? str)) |
633 | (if (direct-store-path? str) | |
634 | (cons `(,str) result) | |
21b679f6 | 635 | result)) |
bcb13287 LC |
636 | (($ <gexp-input> (? struct? thing) output) |
637 | (if (lookup-compiler thing) | |
638 | ;; THING is a derivation, or a package, or an origin, etc. | |
639 | (cons `(,thing ,output) result) | |
640 | result)) | |
1123759b | 641 | (($ <gexp-input> (lst ...) output n?) |
e39d1461 LC |
642 | (fold-right add-reference-inputs result |
643 | ;; XXX: For now, automatically convert LST to a list of | |
644 | ;; gexp-inputs. | |
0dbea56b LC |
645 | (map (match-lambda |
646 | ((? gexp-input? x) x) | |
1123759b | 647 | (x (%gexp-input x "out" (or n? native?)))) |
0dbea56b | 648 | lst))) |
21b679f6 LC |
649 | (_ |
650 | ;; Ignore references to other kinds of objects. | |
651 | result))) | |
652 | ||
affd7761 LC |
653 | (define (native-input? x) |
654 | (and (gexp-input? x) | |
655 | (gexp-input-native? x))) | |
656 | ||
21b679f6 LC |
657 | (fold-right add-reference-inputs |
658 | '() | |
1123759b | 659 | (if native? |
affd7761 LC |
660 | (filter native-input? (gexp-references exp)) |
661 | (remove native-input? (gexp-references exp))))) | |
667b2508 LC |
662 | |
663 | (define gexp-native-inputs | |
1123759b | 664 | (cut gexp-inputs <> #:native? #t)) |
21b679f6 LC |
665 | |
666 | (define (gexp-outputs exp) | |
667 | "Return the outputs referred to by EXP as a list of strings." | |
668 | (define (add-reference-output ref result) | |
669 | (match ref | |
1e87da58 | 670 | (($ <gexp-output> name) |
21b679f6 | 671 | (cons name result)) |
e39d1461 | 672 | (($ <gexp-input> (? gexp? exp)) |
21b679f6 | 673 | (append (gexp-outputs exp) result)) |
e39d1461 LC |
674 | (($ <gexp-input> (lst ...) output native?) |
675 | ;; XXX: Automatically convert LST. | |
0dbea56b LC |
676 | (add-reference-output (map (match-lambda |
677 | ((? gexp-input? x) x) | |
678 | (x (%gexp-input x "out" native?))) | |
679 | lst) | |
e39d1461 | 680 | result)) |
f9efe568 LC |
681 | ((lst ...) |
682 | (fold-right add-reference-output result lst)) | |
21b679f6 LC |
683 | (_ |
684 | result))) | |
685 | ||
7e75a673 LC |
686 | (delete-duplicates |
687 | (add-reference-output (gexp-references exp) '()))) | |
21b679f6 | 688 | |
68a61e9f LC |
689 | (define* (gexp->sexp exp #:key |
690 | (system (%current-system)) | |
691 | (target (%current-target-system))) | |
21b679f6 LC |
692 | "Return (monadically) the sexp corresponding to EXP for the given OUTPUT, |
693 | and in the current monad setting (system type, etc.)" | |
667b2508 | 694 | (define* (reference->sexp ref #:optional native?) |
21b679f6 LC |
695 | (with-monad %store-monad |
696 | (match ref | |
1e87da58 | 697 | (($ <gexp-output> output) |
bfd9eed9 LC |
698 | ;; Output file names are not known in advance but the daemon defines |
699 | ;; an environment variable for each of them at build time, so use | |
700 | ;; that trick. | |
701 | (return `((@ (guile) getenv) ,output))) | |
e39d1461 | 702 | (($ <gexp-input> (? gexp? exp) output n?) |
667b2508 LC |
703 | (gexp->sexp exp |
704 | #:system system | |
e39d1461 LC |
705 | #:target (if (or n? native?) #f target))) |
706 | (($ <gexp-input> (refs ...) output n?) | |
667b2508 | 707 | (sequence %store-monad |
e39d1461 LC |
708 | (map (lambda (ref) |
709 | ;; XXX: Automatically convert REF to an gexp-input. | |
0dbea56b LC |
710 | (reference->sexp |
711 | (if (gexp-input? ref) | |
712 | ref | |
713 | (%gexp-input ref "out" n?)) | |
affd7761 | 714 | (or n? native?))) |
e39d1461 | 715 | refs))) |
bcb13287 | 716 | (($ <gexp-input> (? struct? thing) output n?) |
c2b84676 LC |
717 | (let ((target (if (or n? native?) #f target))) |
718 | (mlet %store-monad ((obj (lower-object thing system | |
719 | #:target target))) | |
d9ae938f LC |
720 | ;; OBJ must be either a derivation or a store file name. |
721 | (return (match obj | |
722 | ((? derivation? drv) | |
723 | (derivation->output-path drv output)) | |
724 | ((? string? file) | |
725 | file)))))) | |
e39d1461 LC |
726 | (($ <gexp-input> x) |
727 | (return x)) | |
21b679f6 LC |
728 | (x |
729 | (return x))))) | |
730 | ||
731 | (mlet %store-monad | |
732 | ((args (sequence %store-monad | |
affd7761 | 733 | (map reference->sexp (gexp-references exp))))) |
21b679f6 LC |
734 | (return (apply (gexp-proc exp) args)))) |
735 | ||
21b679f6 LC |
736 | (define (syntax-location-string s) |
737 | "Return a string representing the source code location of S." | |
738 | (let ((props (syntax-source s))) | |
739 | (if props | |
740 | (let ((file (assoc-ref props 'filename)) | |
741 | (line (and=> (assoc-ref props 'line) 1+)) | |
742 | (column (assoc-ref props 'column))) | |
743 | (if file | |
744 | (simple-format #f "~a:~a:~a" | |
745 | file line column) | |
746 | (simple-format #f "~a:~a" line column))) | |
747 | "<unknown location>"))) | |
748 | ||
0bb9929e LC |
749 | (define-syntax-parameter current-imported-modules |
750 | ;; Current list of imported modules. | |
751 | (identifier-syntax '())) | |
752 | ||
753 | (define-syntax-rule (with-imported-modules modules body ...) | |
754 | "Mark the gexps defined in BODY... as requiring MODULES in their execution | |
755 | environment." | |
756 | (syntax-parameterize ((current-imported-modules | |
757 | (identifier-syntax modules))) | |
758 | body ...)) | |
759 | ||
21b679f6 LC |
760 | (define-syntax gexp |
761 | (lambda (s) | |
762 | (define (collect-escapes exp) | |
763 | ;; Return all the 'ungexp' present in EXP. | |
764 | (let loop ((exp exp) | |
765 | (result '())) | |
607e1b51 LC |
766 | (syntax-case exp (ungexp |
767 | ungexp-splicing | |
768 | ungexp-native | |
769 | ungexp-native-splicing) | |
21b679f6 LC |
770 | ((ungexp _) |
771 | (cons exp result)) | |
772 | ((ungexp _ _) | |
773 | (cons exp result)) | |
774 | ((ungexp-splicing _ ...) | |
775 | (cons exp result)) | |
607e1b51 | 776 | ((ungexp-native _ ...) |
667b2508 LC |
777 | (cons exp result)) |
778 | ((ungexp-native-splicing _ ...) | |
779 | (cons exp result)) | |
780 | ((exp0 exp ...) | |
781 | (let ((result (loop #'exp0 result))) | |
782 | (fold loop result #'(exp ...)))) | |
783 | (_ | |
784 | result)))) | |
785 | ||
21b679f6 LC |
786 | (define (escape->ref exp) |
787 | ;; Turn 'ungexp' form EXP into a "reference". | |
667b2508 LC |
788 | (syntax-case exp (ungexp ungexp-splicing |
789 | ungexp-native ungexp-native-splicing | |
790 | output) | |
21b679f6 | 791 | ((ungexp output) |
1e87da58 | 792 | #'(gexp-output "out")) |
21b679f6 | 793 | ((ungexp output name) |
1e87da58 | 794 | #'(gexp-output name)) |
21b679f6 | 795 | ((ungexp thing) |
0dbea56b | 796 | #'(%gexp-input thing "out" #f)) |
21b679f6 | 797 | ((ungexp drv-or-pkg out) |
0dbea56b | 798 | #'(%gexp-input drv-or-pkg out #f)) |
21b679f6 | 799 | ((ungexp-splicing lst) |
0dbea56b | 800 | #'(%gexp-input lst "out" #f)) |
667b2508 | 801 | ((ungexp-native thing) |
0dbea56b | 802 | #'(%gexp-input thing "out" #t)) |
667b2508 | 803 | ((ungexp-native drv-or-pkg out) |
0dbea56b | 804 | #'(%gexp-input drv-or-pkg out #t)) |
667b2508 | 805 | ((ungexp-native-splicing lst) |
0dbea56b | 806 | #'(%gexp-input lst "out" #t)))) |
21b679f6 | 807 | |
667b2508 LC |
808 | (define (substitute-ungexp exp substs) |
809 | ;; Given EXP, an 'ungexp' or 'ungexp-native' form, substitute it with | |
810 | ;; the corresponding form in SUBSTS. | |
811 | (match (assoc exp substs) | |
812 | ((_ id) | |
813 | id) | |
814 | (_ | |
815 | #'(syntax-error "error: no 'ungexp' substitution" | |
816 | #'ref)))) | |
817 | ||
818 | (define (substitute-ungexp-splicing exp substs) | |
819 | (syntax-case exp () | |
820 | ((exp rest ...) | |
821 | (match (assoc #'exp substs) | |
822 | ((_ id) | |
823 | (with-syntax ((id id)) | |
824 | #`(append id | |
825 | #,(substitute-references #'(rest ...) substs)))) | |
826 | (_ | |
827 | #'(syntax-error "error: no 'ungexp-splicing' substitution" | |
828 | #'ref)))))) | |
829 | ||
21b679f6 LC |
830 | (define (substitute-references exp substs) |
831 | ;; Return a variant of EXP where all the cars of SUBSTS have been | |
832 | ;; replaced by the corresponding cdr. | |
667b2508 LC |
833 | (syntax-case exp (ungexp ungexp-native |
834 | ungexp-splicing ungexp-native-splicing) | |
21b679f6 | 835 | ((ungexp _ ...) |
667b2508 LC |
836 | (substitute-ungexp exp substs)) |
837 | ((ungexp-native _ ...) | |
838 | (substitute-ungexp exp substs)) | |
21b679f6 | 839 | (((ungexp-splicing _ ...) rest ...) |
667b2508 LC |
840 | (substitute-ungexp-splicing exp substs)) |
841 | (((ungexp-native-splicing _ ...) rest ...) | |
842 | (substitute-ungexp-splicing exp substs)) | |
21b679f6 LC |
843 | ((exp0 exp ...) |
844 | #`(cons #,(substitute-references #'exp0 substs) | |
845 | #,(substitute-references #'(exp ...) substs))) | |
846 | (x #''x))) | |
847 | ||
848 | (syntax-case s (ungexp output) | |
849 | ((_ exp) | |
affd7761 | 850 | (let* ((escapes (delete-duplicates (collect-escapes #'exp))) |
21b679f6 LC |
851 | (formals (generate-temporaries escapes)) |
852 | (sexp (substitute-references #'exp (zip escapes formals))) | |
affd7761 LC |
853 | (refs (map escape->ref escapes))) |
854 | #`(make-gexp (list #,@refs) | |
0bb9929e | 855 | current-imported-modules |
21b679f6 LC |
856 | (lambda #,formals |
857 | #,sexp))))))) | |
858 | ||
859 | \f | |
aa72d9af LC |
860 | ;;; |
861 | ;;; Module handling. | |
862 | ;;; | |
863 | ||
df2d51f0 LC |
864 | (define %utils-module |
865 | ;; This file provides 'mkdir-p', needed to implement 'imported-files' and | |
a9601e23 LC |
866 | ;; other primitives below. Note: We give the file name relative to this |
867 | ;; file you are currently reading; 'search-path' could return a file name | |
868 | ;; relative to the current working directory. | |
869 | (local-file "build/utils.scm" | |
df2d51f0 | 870 | "build-utils.scm")) |
aa72d9af LC |
871 | |
872 | (define* (imported-files files | |
873 | #:key (name "file-import") | |
874 | (system (%current-system)) | |
875 | (guile (%guile-for-build))) | |
876 | "Return a derivation that imports FILES into STORE. FILES must be a list | |
877 | of (FINAL-PATH . FILE-NAME) pairs; each FILE-NAME is read from the file | |
878 | system, imported, and appears under FINAL-PATH in the resulting store path." | |
879 | (define file-pair | |
880 | (match-lambda | |
881 | ((final-path . file-name) | |
882 | (mlet %store-monad ((file (interned-file file-name | |
883 | (basename final-path)))) | |
884 | (return (list final-path file)))))) | |
885 | ||
886 | (mlet %store-monad ((files (sequence %store-monad | |
887 | (map file-pair files)))) | |
888 | (define build | |
889 | (gexp | |
890 | (begin | |
df2d51f0 | 891 | (primitive-load (ungexp %utils-module)) ;for 'mkdir-p' |
aa72d9af LC |
892 | (use-modules (ice-9 match)) |
893 | ||
aa72d9af LC |
894 | (mkdir (ungexp output)) (chdir (ungexp output)) |
895 | (for-each (match-lambda | |
896 | ((final-path store-path) | |
897 | (mkdir-p (dirname final-path)) | |
898 | (symlink store-path final-path))) | |
899 | '(ungexp files))))) | |
900 | ||
901 | ;; TODO: Pass FILES as an environment variable so that BUILD remains | |
902 | ;; exactly the same regardless of FILES: less disk space, and fewer | |
903 | ;; 'add-to-store' RPCs. | |
904 | (gexp->derivation name build | |
905 | #:system system | |
906 | #:guile-for-build guile | |
907 | #:local-build? #t))) | |
908 | ||
aa72d9af LC |
909 | (define* (imported-modules modules |
910 | #:key (name "module-import") | |
911 | (system (%current-system)) | |
912 | (guile (%guile-for-build)) | |
913 | (module-path %load-path)) | |
914 | "Return a derivation that contains the source files of MODULES, a list of | |
915 | module names such as `(ice-9 q)'. All of MODULES must be in the MODULE-PATH | |
916 | search path." | |
917 | ;; TODO: Determine the closure of MODULES, build the `.go' files, | |
918 | ;; canonicalize the source files through read/write, etc. | |
919 | (let ((files (map (lambda (m) | |
6985335f | 920 | (let ((f (module->source-file-name m))) |
aa72d9af LC |
921 | (cons f (search-path* module-path f)))) |
922 | modules))) | |
923 | (imported-files files #:name name #:system system | |
924 | #:guile guile))) | |
925 | ||
926 | (define* (compiled-modules modules | |
927 | #:key (name "module-import-compiled") | |
928 | (system (%current-system)) | |
929 | (guile (%guile-for-build)) | |
930 | (module-path %load-path)) | |
931 | "Return a derivation that builds a tree containing the `.go' files | |
932 | corresponding to MODULES. All the MODULES are built in a context where | |
933 | they can refer to each other." | |
934 | (mlet %store-monad ((modules (imported-modules modules | |
935 | #:system system | |
936 | #:guile guile | |
937 | #:module-path | |
938 | module-path))) | |
939 | (define build | |
940 | (gexp | |
941 | (begin | |
df2d51f0 LC |
942 | (primitive-load (ungexp %utils-module)) ;for 'mkdir-p' |
943 | ||
aa72d9af | 944 | (use-modules (ice-9 ftw) |
aa72d9af LC |
945 | (srfi srfi-26) |
946 | (system base compile)) | |
947 | ||
aa72d9af LC |
948 | (define (regular? file) |
949 | (not (member file '("." "..")))) | |
950 | ||
951 | (define (process-directory directory output) | |
952 | (let ((entries (map (cut string-append directory "/" <>) | |
953 | (scandir directory regular?)))) | |
954 | (for-each (lambda (entry) | |
955 | (if (file-is-directory? entry) | |
956 | (let ((output (string-append output "/" | |
957 | (basename entry)))) | |
958 | (mkdir-p output) | |
959 | (process-directory entry output)) | |
960 | (let* ((base (string-drop-right | |
961 | (basename entry) | |
962 | 4)) ;.scm | |
963 | (output (string-append output "/" base | |
964 | ".go"))) | |
965 | (compile-file entry | |
966 | #:output-file output | |
967 | #:opts | |
968 | %auto-compilation-options)))) | |
969 | entries))) | |
970 | ||
971 | (set! %load-path (cons (ungexp modules) %load-path)) | |
972 | (mkdir (ungexp output)) | |
973 | (chdir (ungexp modules)) | |
974 | (process-directory "." (ungexp output))))) | |
975 | ||
976 | ;; TODO: Pass MODULES as an environment variable. | |
977 | (gexp->derivation name build | |
978 | #:system system | |
979 | #:guile-for-build guile | |
980 | #:local-build? #t))) | |
981 | ||
982 | \f | |
21b679f6 LC |
983 | ;;; |
984 | ;;; Convenience procedures. | |
985 | ;;; | |
986 | ||
53e89b17 LC |
987 | (define (default-guile) |
988 | ;; Lazily resolve 'guile-final'. This module must not refer to (gnu …) | |
989 | ;; modules directly, to avoid circular dependencies, hence this hack. | |
bdb36958 | 990 | (module-ref (resolve-interface '(gnu packages commencement)) |
53e89b17 LC |
991 | 'guile-final)) |
992 | ||
21b679f6 | 993 | (define* (gexp->script name exp |
53e89b17 | 994 | #:key (modules '()) (guile (default-guile))) |
21b679f6 LC |
995 | "Return an executable script NAME that runs EXP using GUILE with MODULES in |
996 | its search path." | |
0bb9929e LC |
997 | (define %modules |
998 | (append (gexp-modules exp) modules)) | |
999 | ||
1000 | (mlet %store-monad ((modules (imported-modules %modules)) | |
1001 | (compiled (compiled-modules %modules))) | |
21b679f6 LC |
1002 | (gexp->derivation name |
1003 | (gexp | |
1004 | (call-with-output-file (ungexp output) | |
1005 | (lambda (port) | |
c17b5ab4 LC |
1006 | ;; Note: that makes a long shebang. When the store |
1007 | ;; is /gnu/store, that fits within the 128-byte | |
1008 | ;; limit imposed by Linux, but that may go beyond | |
1009 | ;; when running tests. | |
21b679f6 LC |
1010 | (format port |
1011 | "#!~a/bin/guile --no-auto-compile~%!#~%" | |
1012 | (ungexp guile)) | |
4a4cbd0b LC |
1013 | |
1014 | ;; Write the 'eval-when' form so that it can be | |
1015 | ;; compiled. | |
21b679f6 | 1016 | (write |
4a4cbd0b LC |
1017 | '(eval-when (expand load eval) |
1018 | (set! %load-path | |
1019 | (cons (ungexp modules) %load-path)) | |
1020 | (set! %load-compiled-path | |
1021 | (cons (ungexp compiled) | |
1022 | %load-compiled-path))) | |
21b679f6 LC |
1023 | port) |
1024 | (write '(ungexp exp) port) | |
1025 | (chmod port #o555))))))) | |
1026 | ||
1027 | (define (gexp->file name exp) | |
1028 | "Return a derivation that builds a file NAME containing EXP." | |
1029 | (gexp->derivation name | |
1030 | (gexp | |
1031 | (call-with-output-file (ungexp output) | |
1032 | (lambda (port) | |
dc254e05 | 1033 | (write '(ungexp exp) port)))) |
851b6f62 LC |
1034 | #:local-build? #t |
1035 | #:substitutable? #f)) | |
21b679f6 | 1036 | |
462a3fa3 LC |
1037 | (define* (text-file* name #:rest text) |
1038 | "Return as a monadic value a derivation that builds a text file containing | |
d9ae938f LC |
1039 | all of TEXT. TEXT may list, in addition to strings, objects of any type that |
1040 | can be used in a gexp: packages, derivations, local file objects, etc. The | |
1041 | resulting store file holds references to all these." | |
462a3fa3 LC |
1042 | (define builder |
1043 | (gexp (call-with-output-file (ungexp output "out") | |
1044 | (lambda (port) | |
1045 | (display (string-append (ungexp-splicing text)) port))))) | |
1046 | ||
851b6f62 LC |
1047 | (gexp->derivation name builder |
1048 | #:local-build? #t | |
1049 | #:substitutable? #f)) | |
462a3fa3 | 1050 | |
b751cde3 LC |
1051 | (define* (mixed-text-file name #:rest text) |
1052 | "Return an object representing store file NAME containing TEXT. TEXT is a | |
1053 | sequence of strings and file-like objects, as in: | |
1054 | ||
1055 | (mixed-text-file \"profile\" | |
1056 | \"export PATH=\" coreutils \"/bin:\" grep \"/bin\") | |
1057 | ||
1058 | This is the declarative counterpart of 'text-file*'." | |
1059 | (define build | |
1060 | (gexp (call-with-output-file (ungexp output "out") | |
1061 | (lambda (port) | |
1062 | (display (string-append (ungexp-splicing text)) port))))) | |
1063 | ||
1064 | (computed-file name build)) | |
1065 | ||
21b679f6 LC |
1066 | \f |
1067 | ;;; | |
1068 | ;;; Syntactic sugar. | |
1069 | ;;; | |
1070 | ||
1071 | (eval-when (expand load eval) | |
667b2508 LC |
1072 | (define* (read-ungexp chr port #:optional native?) |
1073 | "Read an 'ungexp' or 'ungexp-splicing' form from PORT. When NATIVE? is | |
1074 | true, use 'ungexp-native' and 'ungexp-native-splicing' instead." | |
21b679f6 LC |
1075 | (define unquote-symbol |
1076 | (match (peek-char port) | |
1077 | (#\@ | |
1078 | (read-char port) | |
667b2508 LC |
1079 | (if native? |
1080 | 'ungexp-native-splicing | |
1081 | 'ungexp-splicing)) | |
21b679f6 | 1082 | (_ |
667b2508 LC |
1083 | (if native? |
1084 | 'ungexp-native | |
1085 | 'ungexp)))) | |
21b679f6 LC |
1086 | |
1087 | (match (read port) | |
1088 | ((? symbol? symbol) | |
1089 | (let ((str (symbol->string symbol))) | |
1090 | (match (string-index-right str #\:) | |
1091 | (#f | |
1092 | `(,unquote-symbol ,symbol)) | |
1093 | (colon | |
1094 | (let ((name (string->symbol (substring str 0 colon))) | |
1095 | (output (substring str (+ colon 1)))) | |
1096 | `(,unquote-symbol ,name ,output)))))) | |
1097 | (x | |
1098 | `(,unquote-symbol ,x)))) | |
1099 | ||
1100 | (define (read-gexp chr port) | |
1101 | "Read a 'gexp' form from PORT." | |
1102 | `(gexp ,(read port))) | |
1103 | ||
1104 | ;; Extend the reader | |
1105 | (read-hash-extend #\~ read-gexp) | |
667b2508 LC |
1106 | (read-hash-extend #\$ read-ungexp) |
1107 | (read-hash-extend #\+ (cut read-ungexp <> <> #t))) | |
21b679f6 LC |
1108 | |
1109 | ;;; gexp.scm ends here |