summaryrefslogtreecommitdiff
path: root/gnu/packages/racket.scm
blob: 10617d732c9775efb9b6d7b0e7c9b9dfb08548af (about) (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2013, 2014, 2015, 2016, 2018, 2020, 2021 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2017, 2018, 2019, 2020 Tobias Geerinckx-Rice <me@tobias.gr>
;;; Copyright © 2020 Pierre Neidhardt <mail@ambrevar.xyz>
;;; Copyright © 2021, 2022 Philip McGrath <philip@philipmcgrath.com>
;;; Copyright © 2021 jgart <jgart@dismail.de>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.

(define-module (gnu packages racket)
  #:use-module (guix packages)
  #:use-module (guix download)
  #:use-module (guix git-download)
  #:use-module (guix utils)
  #:use-module (guix gexp)
  #:use-module (guix build-system copy)
  #:use-module (guix build-system gnu)
  #:use-module (srfi srfi-1)
  #:use-module (srfi srfi-26)
  #:use-module (ice-9 match)
  #:use-module (ice-9 exceptions)
  #:use-module (gnu packages)
  #:use-module (gnu packages autotools)
  #:use-module (gnu packages bash)
  #:use-module (gnu packages chez)
  #:use-module (gnu packages compression)
  #:use-module (gnu packages databases)
  #:use-module (gnu packages fontutils)
  #:use-module (gnu packages gl)
  #:use-module (gnu packages glib)
  #:use-module (gnu packages gtk)
  #:use-module (gnu packages image)
  #:use-module (gnu packages libedit)
  #:use-module (gnu packages libffi)
  #:use-module (gnu packages multiprecision)
  #:use-module (gnu packages ncurses)
  #:use-module (gnu packages sqlite)
  #:use-module (gnu packages tls)
  #:use-module (gnu packages xorg)
  #:use-module ((guix licenses) #:prefix license:))

;; Commentary:
;;
;; Anatomy of Racket:
;; ------------------
;;
;; The main Racket Git repository (<https://github.com/racket/racket>) is
;; organized broadly like this:
;;
;;     .
;;     ├── Makefile
;;     ├── pkgs/
;;     └── racket/
;;         ├── collects/
;;         └── src/
;;             ├── configure
;;             ├── Makefile.in
;;             ├── bc/
;;             ├── cs/
;;             ├── ChezScheme/
;;             └── ...
;;
;; The 'racket/src/' directory contains the source of the runtime system, core
;; compiler, and primitives for the major Racket implementations: this layer
;; is called the ``Racket VM''. It is basically a normal autotools
;; project. (Even when Racket VM implementations use components implemented in
;; Racket, they are compiled in special modes to produce VM primitives.)
;; (There are or have been experimental Racket VM implementations elsewhere,
;; e.g. <https://github.com/pycket/pycket>.)
;;
;; The 'racket/collects/' directory contains ``built in'' Racket libraries
;; that are not part of any package, including the implementation of
;; 'racket/base': in particular, it must contain enough to implement `raco pkg
;; install'. It is theoretically possible to use the Racket VM layer without
;; the main collections, but it is not stable or useful.
;;
;; The 'pkgs/' directory contains Racket packages that are especially closely
;; tied to the implementation of the Racket VM, including 'compiler-lib',
;; 'racket-doc', and 'racket-test'. Some of these packages depend on Racket
;; packages that are developed in other Git repositories, predominantly but
;; not exclusively under the 'racket' GitHub organization. Conversely, not all
;; of the packages developed in the main Git repository are part of the main
;; Racket distribution.  (Additionally, components of the Racket VM that are
;; implemented in Racket can be installed as packages, mostly for ease of
;; development.)
;;
;; The top-level 'Makefile' is more like a directory of scripts: it has
;; convienience targets for developing Racket, and it cooperates with the
;; 'distro-build' package to assemble custom Racket distributions. It is not
;; part of Racket source distributions: the root of a source distribution is
;; basically 'racket/src' with some extra package sources and configuration
;; added.
;;
;; A ''minimal Racket'' installation includes two packages: 'base', which is a
;; sort of bridge between the current ``built-in'' collections and the package
;; system's model of dependencies, and 'racket-lib', which, for installations
;; that can not rely on a system package manager, pulls in the SQLite and
;; OpenSSL shared libraries as platform-specific dependencies for use by the
;; ``built-in'' collections.
;;
;; The main Racket distribution consists of installing the 'main-distribution'
;; package and all of its dependencies.
;;
;; The default mode when building Racket (or installing it with the released
;; installers) is an ``in-place build'', which produces a self-contained,
;; relocatable, roughly FHS-like directory. (Racket also supports
;; ``Unix-style'' installations, which rearrange the parts of an in-place
;; build into Racket-specific subdirectories and generally tries to work for
;; installation into an FHS-based system.) Certain tools, e.g. 'distro-build'
;; and 'raco cross', are able to work with an in-place Racket build.
;;
;; This file defines the packages 'racket-vm-cgc', 'racket-vm-bc', and
;; 'racket-vm-cs'. All three are in-place builds of 'racket/src/' and
;; 'racket/collects/' and are installed to 'opt/racket-vm/' in the store
;; output. The function 'racket-vm-for-system' returns the recomended Racket
;; VM package for a given system.
;;
;; The file 'racket.scm' builds on these packages to define 'racket-minimal'
;; and 'racket' packages. These use Racket's support for ``layered
;; installations'', which allow an immutable base layer to be extended with
;; additional packages. They use the layer configuration directly provide
;; ready-to-install FHS-like trees, rather than relying on the built in
;; ``Unix-style install'' mechanism.
;;
;; Bootstrapping Racket:
;; ---------------------
;;
;; Here's how bootstrapping Racket works:
;;
;;   - Racket BC [CGC] can be built with only a C compiler (except for
;;     one caveat discussed below).
;;   - Racket BC [3M] needs an existing Racket to run "xform",
;;     which transforms its own C source code to add additional annotations
;;     for the precise garbage collector.
;;   - Racket CS needs (bootfiles for) Racket's fork of Chez Scheme.
;;     It also needs an existing Racket to compile Racket-implemented
;;     parts of the runtime system to R6RS libraries.
;;   - Chez Scheme also needs bootfiles for itself, but Racket can simulate
;;     enough of Chez Scheme to load Racket's fork of the Chez Scheme compiler
;;     purely from source into Racket and apply the compiler to itself,
;;     producing the needed bootfiles (albeit very slowly).
;;     Any variant of Racket since version 7.1 can run the simulation.
;;
;; So, we build CGC to build 3M to build bootfiles and CS.
;;
;; (Note: since the CGC variant is basically only for bootstrapping, we
;; often use "BC" to mean "3M", consistent with `(banner)` and the
;; suffixes used on executables when more than one variant co-exists.)
;;
;; One remaining bootstrapping limitation is that Racket's reader, module
;; system, and macro expander are implemented in Racket. For Racket CS,
;; they are compiled to R6RS libraries as discussed above. This note from the
;; README file applies to all such subsystems:
;;
;;     The Racket version must be practically the same as the current Racket
;;     verson, although it can be the Racket BC implementation (instead of
;;     the Racket CS implementation).
;;
;;     Unlike Chez Scheme boot files, the files generated in "schemified"
;;     are human-readable and -editable Scheme code. That provides a way
;;     out of bootstrapping black holes, even without BC.
;;
;; However, other Racket subsystems implemented in Racket for Racket CS
;; use older C implementations for Racket BC, whereas the reader, expander,
;; and module system were completely replaced with the Racket implementation
;; as of Racket 7.0.
;;
;; For Racket BC, the compiled "linklet" s-expressions (primitive modules)
;; are embeded in C as a static string constant. Eventually, they are further
;; compiled by the C-implemented Racket BC bytecode and JIT compilers.
;; (On platforms where Racket BC's JIT is not supported, yet another compiler
;; instead compiles the linklets to C code, but this is not a bootstrapping
;; issue.)
;;
;; Code:

(define* (racket-vm-for-system #:optional
                               (system (or (%current-target-system)
                                           (%current-system))))
  "Return 'racket-vm-cs' if we are able to build it for SYSTEM; 'racket-vm-bc'
otherwise."
  ;; Once we figure out the issues in https://racket.discourse.group/t/950,
  ;; we can use 'racket-vm-cs' everywhere.
  (if (racket-cs-native-supported-system? system)
      racket-vm-cs
      racket-vm-bc))

(define %racket-version "8.5") ; Remember to update chez-scheme-for-racket!
(define %racket-commit
  (string-append "v" %racket-version))
(define %racket-origin
  (origin
    (method git-fetch)
    (uri (git-reference
          (url "https://github.com/racket/racket")
          (commit %racket-commit)))
    (sha256
     (base32 "0f9zyhdvbh4xsndrqjzl85j5ziz0rmqi676g9s1lw3h3skq2636h"))
    (file-name (git-file-name "racket" %racket-version))
    (patches (search-patches "racket-minimal-sh-via-rktio.patch"))
    (modules '((guix build utils)))
    (snippet
     #~(begin
         (use-modules (guix build utils))
         ;; Unbundle Chez submodules.
         (with-directory-excursion "racket/src/ChezScheme"
           ;; TODO: consider putting this in a (guix ...) or (guix build ...)
           ;; module so it can be shared with the upstream Chez Scheme origin
           ;; without cyclic issues.
           (for-each (lambda (dir)
                       (when (directory-exists? dir)
                         (delete-file-recursively dir)))
                     '("stex"
                       "nanopass"
                       "lz4"
                       "zlib")))
         ;; Unbundle libffi.
         (delete-file-recursively "racket/src/bc/foreign/libffi")))))

(define (racket-vm-common-configure-flags)
  ;; under a lambda abstraction to avoid evaluating bash-minimal too early.
  #~`(,@(cond
         ((false-if-exception
           (search-input-file %build-inputs "/bin/libtool"))
          => (lambda (libtool)
               (list (string-append "--enable-lt=" libtool))))
         (else
          '()))
      ,@(cond
         ((false-if-exception
           (search-input-file %build-inputs "/opt/racket-vm/bin/racket"))
          => (lambda (racket)
               (list (string-append "--enable-racket=" racket))))
         (else
          '()))
      ,(string-append "CPPFLAGS=-DGUIX_RKTIO_PATCH_BIN_SH="
                      #$(file-append bash-minimal "/bin/sh"))
      "--disable-strip"
      ;; Using --enable-origtree lets us distinguish the VM from subsequent
      ;; layers and produces a build with the shape expected by tools such as
      ;; "distro-build" and "raco-cross". Removing these flags would require
      ;; changes, especially to 'configure-layer.rkt' (defined below).
      "--enable-origtree"
      ,(string-append "--prefix=" #$output "/opt/racket-vm")))

(define-public racket-vm-cgc
  ;; Eventually, it may make sense for some vm packages to not be hidden,
  ;; but this one is especially likely to remain hidden.
  (hidden-package
   (package
     (name "racket-vm-cgc")
     (version %racket-version)
     (source %racket-origin)
     (inputs (list ncurses ;; <- common to all variants (for #%terminal)
                   bash-minimal ;; <- common to all variants (for `system`)
                   libffi)) ;; <- only for BC variants
     (native-inputs (list libtool)) ;; <- only for BC variants
     (outputs '("out" "debug"))
     (build-system gnu-build-system)
     (arguments
      (list
       #:configure-flags
       #~(cons "--enable-cgcdefault"
               #$(racket-vm-common-configure-flags))
       ;; Tests are in packages like racket-test-core and
       ;; main-distribution-test that aren't part of the main
       ;; distribution.
       #:tests? #f
       ;; Upstream recommends #:out-of-source?, and it
       ;; helps a lot with debugging.
       #:out-of-source? #t
       #:modules '((ice-9 match)
                   (ice-9 regex)
                   (guix build gnu-build-system)
                   (guix build utils))
       #:strip-directories #~'("opt/racket-vm/bin"
                               "opt/racket-vm/lib")
       #:phases
       #~(modify-phases %standard-phases
           (add-before 'configure 'initialize-config.rktd
             (lambda* (#:key inputs #:allow-other-keys)
               (define (write-racket-hash alist)
                 ;; inside must use dotted pair notation
                 (display "#hash(")
                 (for-each (match-lambda
                             ((k . v)
                              (format #t "(~s . ~s)" k v)))
                           alist)
                 (display ")\n"))
               (define maybe-release-catalog
                 (let ((v #$(package-version this-package)))
                   (if (string-match "^[0-9]+\\.[0-9]+($|\\.[0-8][0-9]*$)"
                                     v)
                       `(,(string-append
                           "https://download.racket-lang.org/releases/"
                           v
                           "/catalog/"))
                       '())))
               (mkdir-p "racket/etc")
               (with-output-to-file "racket/etc/config.rktd"
                 (lambda ()
                   (write-racket-hash
                    `((build-stamp . "")
                      (catalogs ,@maybe-release-catalog
                                #f)))))))
           (add-before 'configure 'chdir
             (lambda _
               (chdir "racket/src")))
           (replace 'install-license-files
             ;; The #:out-of-source? mode for install-license-files fails
             ;; to find the srcdir: as a workaround, navigate there ourselves.
             (let ((install-license-files
                    (assoc-ref %standard-phases 'install-license-files)))
               (lambda args
                 (with-directory-excursion "../src"
                   (apply install-license-files
                          `(,@args
                            ;; if there are duplicate keywords, last is used
                            #:out-of-source? #f)))))))))
     (home-page "https://racket-lang.org")
     (synopsis "Old Racket implementation used for bootstrapping")
     (description "This variant of the Racket BC (``before Chez'' or
``bytecode'') implementation is not recommended for general use.  It uses
CGC (a ``Conservative Garbage Collector''), which was succeeded as default in
PLT Scheme version 370 (which translates to 3.7 in the current versioning
scheme) by the 3M variant, which in turn was succeeded in version 8.0 by the
Racket CS implementation.

Racket CGC is primarily used for bootstrapping Racket BC [3M].  It may
also be used for embedding applications without the annotations needed in C
code to use the 3M garbage collector.")
     ;; https://download.racket-lang.org/license.html
     ;; The LGPL components are only used by Racket BC.
     (license (list license:lgpl3+ license:asl2.0 license:expat)))))

(define-public racket-vm-bc
  (package
    (inherit racket-vm-cgc)
    (name "racket-vm-bc")
    (native-inputs
     (modify-inputs (package-native-inputs racket-vm-cgc)
       (prepend racket-vm-cgc)))
    (arguments
     (substitute-keyword-arguments (package-arguments racket-vm-cgc)
       ((#:configure-flags _ '())
        #~(cons "--enable-bconly"
                #$(racket-vm-common-configure-flags)))))
    (synopsis "Racket BC [3M] implementation")
    (description "The Racket BC (``before Chez'' or ``bytecode'')
implementation was the default before Racket 8.0.  It uses a compiler written
in C targeting architecture-independent bytecode, plus a JIT compiler on most
platforms.  Racket BC has a different C API and supports a slightly different
set of architectures than the current default runtime system, Racket CS (based
on ``Chez Scheme'').  It is the recommended implementation for architectures
that Racket CS doesn't support.

This package is the normal implementation of Racket BC with a precise garbage
collector, 3M (``Moving Memory Manager'').")
    ;; https://download.racket-lang.org/license.html
    ;; The LGPL components are only used by Racket BC.
    (license (list license:lgpl3+ license:asl2.0 license:expat))))

(define-public racket-vm-cs
  (package
    (inherit racket-vm-bc)
    (name "racket-vm-cs")
    (inputs
     (modify-inputs (package-inputs racket-vm-cgc)
       (prepend zlib lz4)
       (delete "libffi")))
    (native-inputs
     (modify-inputs (package-native-inputs racket-vm-cgc)
       (delete "libtool")
       (prepend chez-scheme-for-racket
                chez-nanopass-bootstrap
                racket-vm-bc)))
    (arguments
     (substitute-keyword-arguments (package-arguments racket-vm-cgc)
       ((#:phases those-phases #~%standard-phases)
        #~(modify-phases #$those-phases
            (add-after 'unpack 'unpack-nanopass+stex
              (lambda args
                (with-directory-excursion "racket/src/ChezScheme"
                  #$unpack-nanopass+stex)))))
       ((#:configure-flags _ '())
        #~(cons* "--enable-csonly"
                 "--enable-libz"
                 "--enable-lz4"
                 (string-append "--enable-scheme="
                                #$(this-package-native-input
                                   "chez-scheme-for-racket")
                                "/bin/scheme")
                 #$(racket-vm-common-configure-flags)))))
    (synopsis "Racket CS implementation")
    (description "The Racket CS implementation, which uses ``Chez Scheme'' as
its core compiler and runtime system, has been the default Racket VM
implemetation since Racket 8.0.  It performs better than the Racket BC
implementation for most programs.

Using the Racket VM packages directly is not recommended: instead, install the
@code{racket-minimal} or @code{racket} packages.")
    ;; https://download.racket-lang.org/license.html
    ;; The LGPL components are only used by Racket BC.
    (license (list license:asl2.0 license:expat))))

(define (racket-packages-origin name origin specs)
  "Extract from ORIGIN the sources for the Racket packages specified by SPECS,
a non-empty list of package specifications.  In the resulting file-like
object, each package's source will be in the directory
\"/share/racket/pkgs/PKG/\", where PKG is the Racket name for the package.
The NAME will be used in the store file name for the resulting file-like
object.

A package specification is a list of the form:

  (PKG PATH)

where PATH is the path to the package source relative to ORIGIN---possibly
\".\".  As a special case, a package specification may also be a string, which
is equivalent to:

  (PKG PKG)

Examples:

- \"expeditor\"
- (\"main-distribution\" \".\")
- (\"racket-lib\" \"pkgs/racket-lib\")"
  (computed-file
   (string-append "racket-pkg-" name "-sources")
   (with-imported-modules `((guix build utils))
     #~(begin
         (use-modules (guix build utils))
         (mkdir-p (string-append #$output "/share/racket/pkgs"))
         (chdir (string-append #$output "/share/racket/pkgs"))
         #$@(map (match-lambda
                   ((? string? name)
                    #~(copy-recursively #$(file-append origin (string-append "/" name))
                                        #$name))
                   ((name ".")
                    #~(copy-recursively #$origin #$name))
                   ((name path)
                    #~(copy-recursively #$(file-append origin (string-append "/" path))
                                        #$name)))
                 specs)))))

(define (simple-racket-origin repo hash specs)
  "Like 'racket-packages-origin', but specialized for packages hosted at
\"https://github.com/racket/REPO\" with sha256 checksum HASH.  REPO is also
used to build the name of the resulting store item."
  (racket-packages-origin
   repo
   (origin
     (method git-fetch)
     (uri (git-reference
           (url (format #f "https://github.com/racket/~a" repo))
           (commit %racket-commit)))
     (sha256 hash)
     (file-name (git-file-name (string-append "racket-" repo)
                               %racket-version)))
   specs))

(define-public racket-minimal
  (package
    (name "racket-minimal")
    (version %racket-version)
    (source #f)
    ;; For cross-compilation, Matthew Flatt recommends reusing
    ;; as much of `raco cross` as possible. So, put that off until
    ;; we have a build system for Racket packages.
    (inputs
     (list openssl
           sqlite
           (racket-vm-for-system)
           (racket-packages-origin
            "base" %racket-origin
            '(("base" "pkgs/base")
              ("racket-lib" "pkgs/racket-lib")))))
    (build-system gnu-build-system)
    (arguments
     ;; Here and for the `racket` package, we're using #:configure-flags
     ;; to pass flags for `configure-layer.rkt` and #:make-flags
     ;; to pass arguments for `raco pkg install`.
     (list
      #:configure-flags
      #~`("--tethered"
          "--extra-foreign-lib-search-dirs"
          ,(format
            #f "~s"
            (list #$(file-append (this-package-input "openssl") "/lib")
                  #$(file-append (this-package-input "sqlite") "/lib"))))
      #:make-flags #~`("racket-lib")
      #:tests? #f ;; packaged separately
      #:modules '((guix build gnu-build-system)
                  (guix build utils)
                  (guix build union)
                  (ice-9 match))
      #:imported-modules `((guix build union)
                           ,@%gnu-build-system-modules)
      #:phases
      #~(modify-phases %standard-phases
          (delete 'unpack)
          (replace 'configure
            (lambda* (#:key inputs configure-flags #:allow-other-keys)
              (let* ((vm-dir (search-input-directory inputs "opt/racket-vm"))
                     (racket (string-append vm-dir "/bin/racket")))
                (apply invoke
                       racket
                       #$configure-layer.rkt
                       `(,@(cond
                            ((false-if-exception
                              (search-input-file
                               inputs "etc/racket/config.rktd"))
                             => (lambda (file)
                                  `("--parent"
                                    ,(dirname (dirname (dirname file))))))
                            (else
                             '()))
                         ,@configure-flags
                         ,vm-dir
                         ,#$output))
                (invoke racket
                        "--config" (string-append #$output "/etc/racket")
                        "-l" "raco" "setup"
                        "--no-user"))))
          (replace 'build
            (lambda* (#:key inputs #:allow-other-keys)
              ;; We use "share/racket/pkgs" for sources to distinguish them
              ;; from the "lib/racket/pkgs" of a potential parent layer.
              (union-build (string-append #$output "/lib/racket/pkgs")
                           (search-path-as-list '("share/racket/pkgs")
                                                (map cdr inputs))
                           #:create-all-directories? #t)))
          (replace 'install
            (lambda* (#:key inputs make-flags #:allow-other-keys)
              (let ((racket
                     (search-input-file inputs "/opt/racket-vm/bin/racket")))
                (unless (null? make-flags)
                  (invoke racket
                          "-l-"
                          "pkg/dirs-catalog"
                          "--link"
                          "local-catalog"
                          (string-append #$output "/lib/racket/pkgs"))
                  (apply invoke
                         racket
                         "--config" (string-append #$output "/etc/racket")
                         "-l" "raco"
                         "pkg" "install"
                         "--installation"
                         "--auto"
                         "--catalog" "local-catalog"
                         make-flags))))))))
    (home-page "https://racket-lang.org")
    (synopsis "Racket without bundled packages such as DrRacket")
    (description
     "Racket is a general-purpose programming language in the Scheme family,
with a large set of libraries and a compiler based on Chez Scheme.  Racket is
also a platform for language-oriented programming, from small domain-specific
languages to complete language implementations.

The ``minimal Racket'' distribution includes just enough of Racket for you to
use @command{raco pkg} to install more.  Bundled packages, such as the
DrRacket IDE, are not included.")
    ;; https://download.racket-lang.org/license.html
    ;; The LGPL components are only used by Racket BC.
    (license (list license:asl2.0 license:expat))))

(define-public racket
  (package
    (inherit racket-minimal)
    (name "racket")
    (source #f)
    (native-inputs (list racket-minimal)) ; XXX: conservative estimate, untested
    (inputs
     (list
      cairo
      fontconfig
      glib
      glu
      gmp
      gtk+ ;; propagates gdk-pixbuf+svg
      libjpeg-turbo
      libpng
      libx11 ;; ?? wayland ??
      mesa
      mpfr
      pango
      unixodbc
      libedit ;; TODO reconsider in light of expeditor and readline-gpl
      racket-minimal ;; <-- TODO non-tethered layer
      (racket-vm-for-system)
      (simple-racket-origin
       "2d" (base32 "0fb5v6058ls08xw3zbmqyr2ym0psm119gl9ffgmhm9w8rs9i4dq7")
       '("2d" "2d-doc" "2d-lib"))
      (simple-racket-origin
       "algol60" (base32 "09kj6asypmc24n29w0izc9p0q8hpga2hpkchsypfwn5c8zpvihlx")
       '(("algol60" ".")))
      (racket-packages-origin
       "racket" %racket-origin
       '(("at-exp-lib" "pkgs/at-exp-lib")
         ("compiler" "pkgs/compiler")
         ("compiler-lib" "pkgs/compiler-lib")
         ("net" "pkgs/net")
         ("net-doc" "pkgs/net-doc")
         ("net-lib" "pkgs/net-lib")
         ("racket-doc" "pkgs/racket-doc")
         ("racket-index" "pkgs/racket-index")
         ("sandbox-lib" "pkgs/sandbox-lib")
         ("zo-lib" "pkgs/zo-lib")))
      (simple-racket-origin
       "cext-lib" (base32 "00w38jpv88fpl4pgj6ndnysvn0s21rjvj0xhznay80msan0vc341")
       '("cext-lib" "dynext-lib"))
      (simple-racket-origin
       "class-iop" (base32 "08z57q83cr7wnh6g8ah3hdhmsmf9zp1jfs7yvxv188l3hzvygy5l")
       '("class-iop-lib"))
      (simple-racket-origin
       "compatibility" (base32 "0bfqwscjpyi325br5pa6g62g9c8lq18a80zp5g3d2qzn3n3mi6x0")
       '("compatibility" "compatibility-doc" "compatibility-lib"))
      (simple-racket-origin
       "contract-profile" (base32 "1xm2z8g0dpv5d9h2sg680vx1a8ix9gbsdpxxb8qv1w7akp73paj3")
       '(("contract-profile" ".")))
      (simple-racket-origin
       "data" (base32 "10iabgrk9alaggvksnyb0hdq7f1p30pq6pq2bcakvhzpxwiv1f55")
       '("data" "data-doc" "data-enumerate-lib" "data-lib"))
      (simple-racket-origin
       "datalog" (base32 "0nf6cy4djpyhfvgpa6yn72apbz9s83gp0qg95pzjd0az4v6qwq1s")
       '(("datalog" ".")))
      (simple-racket-origin
       "db" (base32 "1n02ja0yj3mjjhmz0yv04yfhyvrsznbljn8bjviyfxnm4xf9rcc5")
       '("db" "db-doc" "db-lib"))
      (simple-racket-origin
       "deinprogramm" (base32 "0g8flr1qg3bcyhdinqhs4w7dyisaqyailbxrjgd2a7zlqmdyicfr")
       '("deinprogramm" "deinprogramm-signature"))
      (simple-racket-origin
       "distributed-places" (base32 "1dajpkj9balqcpv6cdk9hwjz592h1vq8rrx5vncariiac4vbdpa0")
       '("distributed-places" "distributed-places-doc" "distributed-places-lib"))
      (simple-racket-origin
       "draw" (base32 "1fpk85rs2crd63bxnmwj2pysisd62pxcqaip01si67dv1ri8ff92")
       '("draw" "draw-doc" "draw-lib"))
      (simple-racket-origin
       "drracket" (base32 "0dipnz92c63zxys9z1kl5215rm7arc35g9r8bs8ivp96p75mljnz")
       '("drracket"
         "drracket-plugin-lib"
         "drracket-tool"
         "drracket-tool-doc"
         "drracket-tool-lib"
         "drracket-tool-text-lib"))
      (simple-racket-origin
       "ds-store" (base32 "0ajr27kipp4dr1qlisaghsb3h7lhhjwrfw2r79b5myczsa1mp661")
       '("ds-store" "ds-store-doc" "ds-store-lib"))
      (simple-racket-origin
       "eli-tester" (base32 "0icx6wn14gjm8kdmq1jppqgq87sxkras4qb5xmdr6wigxafhjqyk")
       '(("eli-tester"  ".")))
      (simple-racket-origin
       "eopl" (base32 "1fmiixj6rxsgzwvgva8lvrvv0gl49v2405mp3s0i7ipis5c4n27s")
       '(("eopl" ".")))
      (simple-racket-origin
       "errortrace" (base32 "14m7rhaxngj36070iw15am434hm438pfgmwjfsiqhsglz4pcxhip")
       '("errortrace" "errortrace-doc" "errortrace-lib"))
      (simple-racket-origin
       "expeditor" (base32 "0mjfwb4wzwsg5xj3k6cmik0va432n56rp5h7rxx1c2yy3prh1j7q")
       '("expeditor" "expeditor-doc" "expeditor-lib"))
      (simple-racket-origin
       "frtime" (base32 "0ydz2yn8vvv6z7brwlswcyx0f31a6y6d443i89rysfvd2xkhpfd5")
       '(("frtime" ".")))
      (simple-racket-origin
       "future-visualizer" (base32 "1758qq769m0r14xf64sl2ix2l9z340kvapar0j7s5kdg42lmvnhm")
       '("future-visualizer"
         "future-visualizer-pict"
         "future-visualizer-typed"))
      (simple-racket-origin
       "games" (base32 "0kpn3izlx1ccd0pj0dnvmnrhny51b85xy418a7psj70lz8j8415d")
       '(("games" ".")))
      (simple-racket-origin
       "gui" (base32 "0r3ck4gxdhnzr1a1fi0f1i7gwfip7akq10qgcxza66pp57hnl0wx")
       '("gui" "gui-doc" "gui-lib" "tex-table"))
      (simple-racket-origin
       "gui-pkg-manager" (base32 "1ji9448d723nklqvycwdswj0ni28sabrncag14f9mx47did5myb5")
       '("gui-pkg-manager-lib"))
      (simple-racket-origin
       "htdp" (base32 "19xqixrqbwdxph17w9jga19008j88harb5wgml4hpqj3x0apx9g3")
       '("htdp" "htdp-doc" "htdp-lib"))
      (simple-racket-origin
       "html" (base32 "18n1jnjgzfknc8nv8dppi85nb8q08gqdwkg6hfjk08x0p00anx2x")
       '("html" "html-doc" "html-lib"))
      (simple-racket-origin
       "icons" (base32 "1s5a6j11fg3fdr6b7vm2q7q178d7q8b8igy73bs211r27qrd1gg7")
       '(("icons" ".")))
      (simple-racket-origin
       "images" (base32 "0rpjxqw34bq5m08kh1ldl1mr7s9z1lyydxxcyzb292kqh9qiqvfl")
       '("images" "images-doc" "images-gui-lib" "images-lib"))
      (simple-racket-origin
       "lazy" (base32 "176ylzgbdsbmqknpihaz519afq71pyjkv1h87j5v8jfbpbddyfsf")
       '(("lazy" ".")))
      (simple-racket-origin
       "macro-debugger" (base32 "14hyrwbkffr61fk44l02xb47bhv5zccw0ymaa9kxld86hvyqhqbm")
       '("macro-debugger" "macro-debugger-text-lib"))
      (simple-racket-origin
       "main-distribution" (base32 "0m2n9s32s8a4a2gn4ywrm9l8jycdm5ayi5w9kh5wchhrrw7qzq7y")
       '(("main-distribution" ".")))
      (simple-racket-origin
       "make" (base32 "10852fj30bz5r46c3d99s37fkgy5yh44gb01j29sf3kxnhi0g2sa")
       '(("make" ".")))
      (simple-racket-origin
       "math" (base32 "02sqbnvxvmvslk33b44fx4v93zafcvhva0cx8z21jqbl5wp217ac")
       '("math" "math-doc" "math-lib"))
      (simple-racket-origin
       "mysterx" (base32 "11p9jzrafw0hizhl0cs4sxx7rv281185q8hryic2rpk0kzjdyr48")
       '(("mysterx" ".")))
      (simple-racket-origin
       "mzcom" (base32 "0rc9pfj7gwm5azghqvcibz6si1x5s2v8mr2yngk7ssq9gzfbi6a4")
       '(("mzcom" ".")))
      (simple-racket-origin
       "mzscheme" (base32 "192c52zi726h5wjamxrhivjw2waq1im0zpyxhbrkrxknm8x84bs9")
       '("mzscheme" "mzscheme-doc" "mzscheme-lib"))
      (racket-packages-origin
       "net-cookies" (origin
                       (method git-fetch)
                       (uri (git-reference
                             (url "https://github.com/RenaissanceBug/racket-cookies")
                             (commit %racket-commit)))
                       (sha256 (base32
                                "0k0hifxhywl5c3hjcaiizc098dpyk001d981p572gly116yvjxc1"))
                       (file-name
                        (git-file-name "RenaissanceBug-racket-cookies" %racket-version)))
       '("net-cookies" "net-cookies-doc" "net-cookies-lib"))
      (racket-packages-origin
       "optimization-coach"
       (origin
         (method git-fetch)
         (uri (git-reference
               (url "https://github.com/stamourv/optimization-coach")
               (commit %racket-commit)))
         (sha256 (base32
                  "0b27sw48d7rhz0hin88c7rbr9vpg1c23sn82nd4jkmq54h6gasr1"))
         (file-name
          (git-file-name "stamourv-optimization-coach" %racket-version)))
       '(("optimization-coach" ".")))
      (simple-racket-origin
       "option-contract" (base32 "026b7n5l0c3024nymshz8zp1yhn493rdzgpflzfd52hj7awafqhk")
       '("option-contract" "option-contract-doc" "option-contract-lib"))
      (simple-racket-origin
       "parser-tools" (base32 "08pvz4zramirzm3j64hbhjm0mmh5zfy37iv4s3vmq0rj49cr8fl3")
       '("parser-tools" "parser-tools-doc" "parser-tools-lib"))
      (simple-racket-origin
       "pconvert" (base32 "00czi0p399mmyrvxyrs5kniizpkqfxyz2ncxqi2jy79a7wk79pb1")
       '("pconvert-lib"))
      (simple-racket-origin
       "pict" (base32 "0v7a3l77swsbh80mnb9rakdwgw7s66ji0mall7qcqfwyg1b4zmlv")
       '("pict" "pict-doc" "pict-lib"))
      (simple-racket-origin
       "pict-snip" (base32 "081nwiy4a0n4f7xws16hqbhf0j3kz5alizndi3nnyr3chm4kng6x")
       '("pict-snip" "pict-snip-doc" "pict-snip-lib"))
      (simple-racket-origin
       "picturing-programs" (base32 "1g6xr39hx1j03gb3d4dljm3v91xcj2gfpq3dgy5xvplzr6cmmxgr")
       '(("picturing-programs" ".")))
      (simple-racket-origin
       "plai" (base32 "0i983sh0r0zm2ng4j44m5aw9669kh5fhp91bzpc9jm280rfcqvyl")
       '("plai" "plai-doc" "plai-lib"))
      (simple-racket-origin
       "planet" (base32 "0r2yqrzrmdjjyr14k6hhlzc5kzrcx3583m1s02mhrcmpfw0s85w9")
       '("planet" "planet-doc" "planet-lib"))
      (simple-racket-origin
       "plot" (base32 "04871pspbm0q3bz5896sa3jw2rp9i6jf0b5aivrxfp56vxxd2ybb")
       '("plot" "plot-compat" "plot-doc" "plot-gui-lib" "plot-lib"))
      (simple-racket-origin
       "preprocessor" (base32 "1p5aid58ifnjy4xl0ysh85cq39k25661v975jrpk182z3k5621mg")
       '(("preprocessor" ".")))
      (simple-racket-origin
       "profile" (base32 "179i86lyby29nywz60l4vnadi02w8b12h7501nm5h5g4pq9jjmbb")
       '("profile" "profile-doc" "profile-lib"))
      (racket-packages-origin
       "quickscript" (origin
                       (method git-fetch)
                       (uri (git-reference
                             (url "https://github.com/Metaxal/quickscript")
                             (commit %racket-commit)))
                       (sha256 (base32
                                "00sf5nw09aacd0l4a4cknnffvcs95p596im3blsdvfz5ck6jdwl8"))
                       (file-name (git-file-name "Metaxal-quickscript" %racket-version)))
       '(("quickscript" ".")))
      (simple-racket-origin
       "r5rs" (base32 "1g3cysj7z88r38vkzvi8g2fb2hn4yg1fdhy5smxw303jxgl3inp6")
       '("r5rs" "r5rs-doc" "r5rs-lib"))
      (simple-racket-origin
       "r6rs" (base32 "0b1ymzdp10r0flw2acbidjsh5ma1pm5hy54jss37sxf89z3xbvm4")
       '("r6rs" "r6rs-doc" "r6rs-lib"))
      (racket-packages-origin
       "racket-cheat" (origin
                        (method git-fetch)
                        (uri (git-reference
                              (url "https://github.com/jeapostrophe/racket-cheat")
                              (commit %racket-commit)))
                        (sha256 (base32
                                 "06wcj558rzkbl2bwkmikyspya9v1f4iwlzwnwxpkc33h2xapwabr"))
                        (file-name
                         (git-file-name "jeapostrophe-racket-cheat" %racket-version)))
       '(("racket-cheat" ".")))
      (simple-racket-origin
       "racklog" (base32 "0fbq0fpfb3l6h7h772dvkmlzlk2dnq5f8296xx1qxhhwypibqzr9")
       '(("racklog" ".")))
      (simple-racket-origin
       "rackunit" (base32 "0vfwcddzrgrdv5awjka7m0jzqhqvfc5wlkih83a670y96496a83n")
       '("rackunit"
         "rackunit-doc"
         "rackunit-gui"
         "rackunit-lib"
         "rackunit-plugin-lib"
         "rackunit-typed"
         "schemeunit"
         "testing-util-lib"))
      (simple-racket-origin
       "readline" (base32 "13kbcn2wchv82d709mw3r8n37bk8iwq0y4kpvm9dbzx0w2pxkfwn")
       '("readline" "readline-doc" "readline-lib"))
      (simple-racket-origin
       "realm" (base32 "0hxcgla08iack54j8v40fj51811chpy66ym2zq76zb52c7kzn0hi")
       '(("realm" ".")))
      (simple-racket-origin
       "redex" (base32 "18rn8ddsqh1s7hdlb2cb9wxln63bz0wysjssaf9v92r712xnnv8i")
       '("redex"
         "redex-benchmark"
         "redex-doc"
         "redex-examples"
         "redex-gui-lib"
         "redex-lib"
         "redex-pict-lib"))
      (simple-racket-origin
       "sasl" (base32 "0ibh4wb4gn8pggx6gkv4vk4d6rwzn5nrvjibhvkzhaynf6lhb824")
       '("sasl" "sasl-doc" "sasl-lib"))
      (simple-racket-origin
       "scheme-lib" (base32 "0pcf0y8rp4qyjhaz5ww5sr5diq0wpcdfrrnask7zapyklzx1jx8x")
       '(("scheme-lib" ".")))
      (simple-racket-origin
       "scribble" (base32 "0fbb7xgz95y90247hfc1a19v7ry8m6blvv4y8irdgzhjvik70zb3")
       '("scribble"
         "scribble-doc"
         "scribble-html-lib"
         "scribble-lib"
         "scribble-text-lib"))
      (simple-racket-origin
       "serialize-cstruct-lib"
       (base32 "1rq3n1fa7ldjwx3lrh9ybhig7jlsw1crpzyklbzp3xqdw6jymfnz")
       '(("serialize-cstruct-lib" ".")))
      (simple-racket-origin
       "sgl" (base32 "0nkymhdyjrwi5h199j4w5zh7y3x3ai42gsiwxzh0hy7yqrqqg9zv")
       '(("sgl" ".")))
      (simple-racket-origin
       "shell-completion" (base32 "04m144gy2mp4fiq6rcbf12wjr8mws8k9scfhg9lc38vqppp4lxsj")
       '(("shell-completion" ".")))
      (simple-racket-origin
       "simple-tree-text-markup"
       (base32 "0fyd9gfz6bnv0m1901wv5mnhc05rm8hw9i6ddrqx33hs6qsg2zqr")
       '("simple-tree-text-markup"
         "simple-tree-text-markup-doc"
         "simple-tree-text-markup-lib"))
      (simple-racket-origin
       "slatex" (base32 "0pkm2isbbdk63slrbsxcql7rr0wdrw5kapw1xq4ps5k8dhlzv8x0")
       '(("slatex" ".")))
      (simple-racket-origin
       "slideshow" (base32 "1znv1i2d0610hhy71q932xy7wka00q3q50in1xfnk8ibg7nzkagm")
       '("slideshow" "slideshow-doc" "slideshow-exe" "slideshow-lib" "slideshow-plugin"))
      (simple-racket-origin
       "snip" (base32 "01r9wc5xr3q3n4yyif6j0a37rgdzmpslxn05k13ksik73b3wj6hj")
       '("snip" "snip-lib"))
      (simple-racket-origin
       "typed-racket" (base32 "0z6bagp6qiw0i3slhvq035y5hqgq664xw3bdlvdayad0bgbg0mdc")
       '("source-syntax"
         "typed-racket"
         "typed-racket-compatibility"
         "typed-racket-doc"
         "typed-racket-lib"
         "typed-racket-more"))
      (simple-racket-origin
       "srfi" (base32 "0aqbcdv2dfc2xnk0h6zfi56p7bpwqji8s88qds3d03hhh9k28gvn")
       '("srfi" "srfi-doc" "srfi-lib" "srfi-lite-lib"))
      (simple-racket-origin
       "string-constants" (base32 "0b1ji31pv6bjb0a2bh9sqp5abvf91gn2rai8r4c4nkar1fzfwfac")
       '("string-constants" "string-constants-doc" "string-constants-lib"))
      (simple-racket-origin
       "swindle" (base32 "164gdsphjzdl2vv7zxz7dfk9jwax8njpmim6sidm8qz8a8589y67")
       '(("swindle" ".")))
      (simple-racket-origin
       "syntax-color" (base32 "17lb2403ymz6sflw4vs3gsh2y7kgsf0gn8sncsxjhi16rpj3a9vm")
       '("syntax-color" "syntax-color-doc" "syntax-color-lib"))
      (simple-racket-origin
       "trace" (base32 "070ihla5j796hdarn5wxdwn4xj0xnkm50shgh49jy994mribvhia")
       '(("trace" ".")))
      (simple-racket-origin
       "unix-socket" (base32 "02dfwas5ynbpyz74w9kwb4wgb37y5wys7svrlmir8k0n9ph9vq0y")
       '("unix-socket" "unix-socket-doc" "unix-socket-lib"))
      (simple-racket-origin
       "web-server" (base32 "1g4x79ym3mgxv4f3z3z84j12355pf44pjlzlb7f0h6r0i7p0cbjd")
       '("web-server" "web-server-doc" "web-server-lib"))
      (simple-racket-origin
       "wxme" (base32 "1qp5gr9gqsakiq3alw6m4yyv5vw4i3hp4y4nhq8vl2nkjmirvn0b")
       '("wxme" "wxme-lib"))
      (simple-racket-origin
       "xrepl" (base32 "19svg0jfs656bld5ikqipz3a5szk5k02zq5fh43209qw527dnfbk")
       '("xrepl" "xrepl-doc" "xrepl-lib"))))
    (build-system gnu-build-system)
    (arguments
     (substitute-keyword-arguments (package-arguments racket-minimal)
       ((#:make-flags _ '())
        #~`("main-distribution"))
       ((#:configure-flags _ '())
        #~`("--tethered"
            "--extra-foreign-lib-search-dirs"
            ,(format #f "~s"
                     '(#$@(map (lambda (name)
                                 (cond
                                  ((this-package-input name)
                                   => (cut file-append <> "/lib"))
                                  (else
                                   (raise-exception
                                    (make-exception
                                     (make-assertion-failure)
                                     (make-exception-with-message
                                      "missing input to the 'racket' package")
                                     (make-exception-with-irritants
                                      (list name)))))))
                               '("cairo"
                                 "fontconfig-minimal" ;; aka fontconfig
                                 "glib"
                                 "glu"
                                 "gmp"
                                 "gtk+"
                                 "libjpeg-turbo"
                                 "libpng"
                                 "libx11"
                                 "mesa"
                                 "mpfr"
                                 "pango"
                                 "unixodbc"
                                 "libedit"))))))))
    (synopsis "Programmable programming language in the Scheme family")
    (description
     "Racket is a general-purpose programming language in the Scheme family,
with a large set of libraries and a compiler based on Chez Scheme.  Racket is
also a platform for language-oriented programming, from small domain-specific
languages to complete language implementations.

The main Racket distribution comes with many bundled packages, including the
DrRacket IDE, libraries for GUI and web programming, and implementations of
languages such as Typed Racket, R5RS and R6RS Scheme, Algol 60, and Datalog.")))

(define configure-layer.rkt
  (scheme-file
   "configure-layer.rkt"
   `(module
     configure-layer racket/base
     (require racket/cmdline
              racket/match
              racket/file
              racket/port
              racket/list
              racket/pretty)
     (define (build-path-string . args)
       (path->string (apply build-path args)))
     (define rx:racket
       ;; Guile's reader doesn't support #rx"racket"
       (regexp "racket"))
     (define tethered? #f)
     (define parent #f)
     (define extra-foreign-lib-search-dirs '())
     (define-values [vm-dir prefix]
       (command-line
        #:once-each
        [("--tethered") "create a tethered layer"
         (set! tethered? #t)]
        [("--parent") dir "path of parent layer, if any"
         (set! parent dir)]
        [("--extra-foreign-lib-search-dirs") dir-list
         "foreign library directories, as a list of strings in `read` syntax"
         (set! extra-foreign-lib-search-dirs
               (call-with-input-string dir-list read))]
        #:args (vm-dir prefix)
        (values vm-dir prefix)))
     (let* ([config
             (for/fold
              ([config (file->value
                        (if parent
                            (build-path parent "etc/racket/config.rktd")
                            (build-path vm-dir "etc/config.rktd")))])
              ([spec
                (in-list
                 '((lib-dir lib-search-dirs "lib/racket" "lib")
                   (share-dir share-search-dirs "share/racket" "share")
                   (links-file links-search-files
                               "lib/racket/links.rktd"
                               "share/links.rktd")
                   (pkgs-dir pkgs-search-dirs "lib/racket/pkgs" "share/pkgs")
                   ;; Partial workaround for:
                   ;; https://github.com/racket/racket/issues/4133
                   #;(bin-dir bin-search-dirs "bin" "bin")
                   (bin-dir bin-search-dirs
                            "lib/racket/bogus-untethered-bin"
                            "bin")
                   (man-dir man-search-dirs "share/man" "share/man")
                   (doc-dir doc-search-dirs "share/doc/racket" "doc")
                   (include-dir include-search-dirs
                                "include/racket"
                                "include")))])
              (match-define (list main-key search-key pth vm-pth) spec)
              (hash-set*
               config
               main-key
               (build-path-string prefix pth)
               search-key
               (list* #f
                      (hash-ref config
                                main-key
                                (lambda ()
                                  (if parent
                                      (build-path-string parent pth)
                                      (build-path-string vm-dir vm-pth))))
                      (filter values (hash-ref config search-key null)))))]
            [config
             (hash-update config
                          'lib-search-dirs
                          (lambda (dirs)
                            ;; add after other layers, but before older
                            ;; foreign lib search directories
                            (define-values [rkt old-foreign-dirs]
                              (partition (lambda (pth)
                                           (or (not pth)
                                               (regexp-match? rx:racket pth)))
                                         dirs))
                            (append rkt
                                    extra-foreign-lib-search-dirs
                                    old-foreign-dirs)))]
            [config
             (hash-set* config
                        'apps-dir
                        (build-path-string prefix "share/applications")
                        'absolute-installation? #t
                        ;; Let Guix coexist with other installation
                        ;; methods without clobbering user-specific packages.
                        ;; This could be set in various places, but doing
                        ;; it here is convienient, at least until we support
                        ;; cross-compilation.
                        'installation-name
                        (string-append (version)
                                       "-guix"
                                       (match (system-type 'gc)
                                         ['cgc "-cgc"]
                                         ;; workaround Guile reader/printer:
                                         ['|3m| "-bc"]
                                         [_ ""])))]
            [config
             (cond
              [tethered?
               ;; Partial workaround for:
               ;; https://github.com/racket/racket/issues/4133
               #;(define bin-dir (hash-ref config 'bin-dir))
               (define bin-dir (build-path-string prefix "bin"))
               (hash-set* config
                          'config-tethered-apps-dir (hash-ref config 'apps-dir)
                          'config-tethered-console-bin-dir bin-dir
                          'config-tethered-gui-bin-dir bin-dir)]
              [else
               config])])
       (define new-config-pth
         (build-path prefix "etc/racket/config.rktd"))
       (make-parent-directory* new-config-pth)
       (call-with-output-file*
        new-config-pth
        (lambda (out)
          (pretty-write config out)))))))