;;; 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:
;;
;; Here's how bootstrapping minimal 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.
;;
;; 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-version "8.4")
;; ^ Remember to update chez-scheme-for-racket-bootstrap-bootfiles!
(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 "1vpl66gdgc8rnldmn8rmb7ar9l057jqjvgpfn29k57i3c5skr8s6"))
    (file-name (git-file-name "racket" %racket-version))
    (patches (search-patches "racket-minimal-sh-via-rktio.patch"
                             ;; Remove by Racket 8.5:
                             "racket-enable-scheme-backport.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 "/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"))))

(define (make-unpack-nanopass+stex)
  ;; Adapted from chez-scheme.
  ;; TODO: Refactor enough to share this directly.
  ;; Thunked to avoid evaliating 'chez-scheme' too early.
  #~(begin
      (copy-recursively
       #$(match (assoc-ref (package-native-inputs chez-scheme)
                           "nanopass")
           ((src)
            src))
       "nanopass"
       #:keep-mtime? #t)
      (mkdir-p "stex")
      (with-output-to-file "stex/Mf-stex"
        (lambda ()
          ;; otherwise, it will try to download submodules
          (display "# to placate ../configure")))))


(define-public racket-minimal-bc-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-minimal-bc-cgc")
     (version %racket-version)
     (source %racket-origin)
     (inputs
      (list
       ;; common to all racket-minimal variants:
       openssl
       sqlite
       bash-minimal ;; <- for `system`
       ncurses ;; <- for #%terminal
       ;; only for BC variants:
       libffi))
     (native-inputs (list libtool)) ;; <- only for BC variants
     (build-system gnu-build-system)
     (arguments
      (list
       #:configure-flags
       #~(cons* "--enable-cgcdefault"
                #$(racket-vm-common-configure-flags))
       ;; Tests are in packages like racket-test-core and
       ;; main-distribution-test that aren't part of the main
       ;; distribution.
       #:tests? #f
       ;; Upstream recommends #:out-of-source?, and it does
       ;; help with debugging, but it confuses `install-license-files`.
       #:modules '((ice-9 match)
                   (ice-9 regex)
                   (guix build gnu-build-system)
                   (guix build utils))
       #:phases
       #~(modify-phases %standard-phases
           (add-before 'configure 'initialize-config.rktd
             (lambda* (#:key inputs #:allow-other-keys)
               (define (write-racket-hash alist)
                 ;; inside must use dotted pair notation
                 (display "#hash(")
                 (for-each (match-lambda
                             ((k . v)
                              (format #t "(~s . ~s)" k v)))
                           alist)
                 (display ")\n"))
               (define maybe-release-catalog
                 (let ((v #$(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
                    `((lib-search-dirs
                       . (#f #$(file-append (this-package-input "openssl") "/lib")
                             #$(file-append (this-package-input "sqlite") "/lib")))
                      (build-stamp . "")
                      (catalogs ,@maybe-release-catalog
                                #f)))))))
           (add-before 'configure 'chdir
             (lambda _
               (chdir "racket/src")))
           (add-after 'install 'remove-pkgs-directory
             ;; If the configured pkgs-dir exists, "pkgs.rktd" does not
             ;; exist, and a lock file does not exist, commands like
             ;; `raco pkg show` will try to create a lock file and fail
             ;; due to the read-only store.
             ;; Arguably this may be a bug in `pkg/private/lock`:
             ;; see <https://github.com/racket/racket/issues/3851>.
             ;; As a workaround, remove the directory.
             (lambda args
               ;; rmdir because we want an error if it isn't empty
               (rmdir (string-append #$output "/share/racket/pkgs")))))))
     (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 BC [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-minimal-bc-3m
  (package
    (inherit racket-minimal-bc-cgc)
    (name "racket-minimal-bc-3m")
    (native-inputs
     (modify-inputs (package-native-inputs racket-minimal-bc-cgc)
       (prepend racket-minimal-bc-cgc)))
    (arguments
     (substitute-keyword-arguments (package-arguments racket-minimal-bc-cgc)
       ((#:configure-flags _ '())
        #~(cons "--enable-bconly"
                #$(racket-vm-common-configure-flags)))))
    (synopsis "Minimal Racket with the BC [3M] runtime system")
    (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'').

This package is the normal implementation of Racket BC with a precise garbage
collector, 3M (``Moving Memory Manager'').")))

(define-public racket-minimal
  (package
    (inherit racket-minimal-bc-3m)
    (name "racket-minimal")
    (inputs
     (modify-inputs (package-inputs racket-minimal-bc-cgc)
       (prepend zlib lz4)
       (delete "libffi")))
    (native-inputs
     (modify-inputs (package-native-inputs racket-minimal-bc-cgc)
       (delete "libtool")
       (prepend chez-scheme-for-racket-bootstrap-bootfiles
                racket-minimal-bc-3m)))
    (arguments
     (substitute-keyword-arguments (package-arguments racket-minimal-bc-3m)
       ((#:phases bc-phases)
        #~(modify-phases #$bc-phases
            (add-after 'unpack 'unpack-nanopass+stex
              (lambda args
                (with-directory-excursion "racket/src/ChezScheme"
                  #$(make-unpack-nanopass+stex))))
            (add-after 'unpack-nanopass+stex 'unpack-bootfiles
              (lambda* (#:key native-inputs inputs #:allow-other-keys)
                (with-directory-excursion "racket/src/ChezScheme"
                  (copy-recursively
                   (search-input-directory (or native-inputs inputs)
                                           "lib/chez-scheme-bootfiles")
                   "boot"))))))
       ((#:configure-flags _ '())
        #~(cons* "--enable-csonly"
                 "--enable-libz"
                 "--enable-lz4"
                 #$(racket-vm-common-configure-flags)))))
    (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.")
    (properties `())
    ;; 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 chez-scheme-for-racket-bootstrap-bootfiles
  (package
    (name "chez-scheme-for-racket-bootstrap-bootfiles")
    (version "9.5.7.3")
    ;; The version should match `(scheme-fork-version-number)`.
    ;; See racket/src/ChezScheme/s/cmacros.ss c. line 360.
    ;; It will always be different than the upstream version!
    ;; When updating, remember to also update %racket-version in racket.scm.
    (source %racket-origin)
    (inputs `())
    (native-inputs (list racket-minimal-bc-3m))
    (build-system copy-build-system)
    ;; TODO: cross compilation
    (arguments
     (list
      #:install-plan
      #~`(("boot/" "lib/chez-scheme-bootfiles"))
      #:phases
      #~(modify-phases %standard-phases
          (add-after 'unpack 'chdir
            (lambda args
              (chdir "racket/src/ChezScheme")))
          (add-after 'chdir 'unpack-nanopass+stex
            (lambda args
              #$(make-unpack-nanopass+stex)))
          (add-before 'install 'build
            (lambda* (#:key native-inputs inputs #:allow-other-keys)
              (invoke (search-input-file (or native-inputs inputs)
                                         "/bin/racket")
                      "rktboot/main.rkt"))))))
    (home-page "https://github.com/racket/ChezScheme")
    ;; ^ This is downstream of https://github.com/racket/racket,
    ;; but it's designed to be a friendly landing place for people
    ;; who want a ChezScheme-shaped repositroy.
    (synopsis "Chez Scheme bootfiles bootstrapped by Racket")
    (description "Chez Scheme is a self-hosting compiler: building it
requires ``bootfiles'' containing the Scheme-implemented portions compiled for
the current platform.  (Chez can then cross-compile bootfiles for all other
supported platforms.)

The Racket package @code{cs-bootstrap} (part of the main Racket Git
repository) implements enough of a Chez Scheme simulation to load the Chez
Scheme compiler purely from source into Racket and apply the compiler to
itself, thus bootstrapping Chez Scheme.  Bootstrapping takes about 10 times as
long as using an existing Chez Scheme, but @code{cs-bootstrap} supports Racket
7.1 and later, including the Racket BC variant.

Note that the generated bootfiles are specific to Racket's fork of Chez
Scheme, and @code{cs-bootstrap} does not currently support building upstream
Chez Scheme.")
    (license (list license:asl2.0))))

(define (extract-package-source origin spec)
  "Extract the source for a Racket package specified by SPEC from ORIGIN into
a new file-like object.  In the resulting file-like object, the package source
will be in the directory \"/share/racket/pkgs/NAME/\", where NAME is the Racket
name for the package.

SPEC is a list of the form:

  (NAME PATH)

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

  (NAME NAME)

Examples:


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

(define (extract-package-source* source-groups)
  "Return a list of file-like objects containing the sources of the Racket
packages specified by SOURCE-GROUPS, a list of the form:

  ((ORIGIN SPEC ...) ...)

The result is equivalent to:

  (append (list (extract-package-source ORIGIN SPEC) ...) ...)"
  (append-map (match-lambda
                ((origin . specs)
                 (map (cut extract-package-source origin <>)
                      specs)))
              source-groups))

(define-public racket
  (package
    (name "racket")
    (version %racket-version)
    (source #f)
    (inputs
     (cons*
      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
      (extract-package-source*
       `((,(origin
             (method git-fetch)
             (uri (git-reference
                   (url "https://github.com/racket/2d")
                   (commit %racket-commit)))
             (sha256 (base32
                      "1zzcz5qyjv7syi41vb8jkxjp1rqgj61zbsdrg0nlc4qy9qsafzgr"))
             (file-name
              (git-file-name "racket-2d" %racket-version)))
          "2d" "2d-doc" "2d-lib")
         (,(origin
             (method git-fetch)
             (uri (git-reference
                   (url "https://github.com/racket/algol60")
                   (commit %racket-commit)))
             (sha256 (base32
                      "09kj6asypmc24n29w0izc9p0q8hpga2hpkchsypfwn5c8zpvihlx"))
             (file-name
              (git-file-name "racket-algol60" %racket-version)))
          ("algol60" "."))
         (,%racket-origin
          ("base" "pkgs/base") ;; FIXME belongs in racket-minimal
          ("racket-lib" "pkgs/racket-lib") ;; FIXME belongs in racket-minimal
          ("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"))
         (,(origin
             (method git-fetch)
             (uri (git-reference
                   (url "https://github.com/racket/cext-lib")
                   (commit %racket-commit)))
             (sha256 (base32
                      "00w38jpv88fpl4pgj6ndnysvn0s21rjvj0xhznay80msan0vc341"))
             (file-name (git-file-name "racket-cext-lib" %racket-version)))
          "cext-lib" "dynext-lib")
         (,(origin
             (method git-fetch)
             (uri (git-reference
                   (url "https://github.com/racket/class-iop")
                   (commit %racket-commit)))
             (sha256 (base32
                      "08z57q83cr7wnh6g8ah3hdhmsmf9zp1jfs7yvxv188l3hzvygy5l"))
             (file-name (git-file-name "racket-class-iop" %racket-version)))
          "class-iop-lib")
         (,(origin
             (method git-fetch)
             (uri (git-reference
                   (url "https://github.com/racket/compatibility")
                   (commit "37f11132cdad7ef27386b68383d073f275d67c31")))
             (sha256 (base32
                      "0bfqwscjpyi325br5pa6g62g9c8lq18a80zp5g3d2qzn3n3mi6x0"))
             (file-name
              (git-file-name "racket-compatibility" %racket-version)))
          "compatibility" "compatibility-doc" "compatibility-lib")
         (,(origin
             (method git-fetch)
             (uri (git-reference
                   (url "https://github.com/racket/contract-profile")
                   (commit "95d980a076126b8e4e4284e912f2a7d9d3ab6860")))
             (sha256 (base32
                      "1xm2z8g0dpv5d9h2sg680vx1a8ix9gbsdpxxb8qv1w7akp73paj3"))
             (file-name
              (git-file-name "racket-contract-profile" %racket-version)))
          ("contract-profile" "."))
         (,(origin
             (method git-fetch)
             (uri (git-reference
                   (url "https://github.com/racket/data")
                   (commit "e32d012b394e32e102e8a9adfcc885bb0541ab51")))
             (sha256 (base32
                      "10iabgrk9alaggvksnyb0hdq7f1p30pq6pq2bcakvhzpxwiv1f55"))
             (file-name (git-file-name "racket-data" %racket-version)))
          "data" "data-doc" "data-enumerate-lib" "data-lib")
         (,(origin
             (method git-fetch)
             (uri (git-reference
                   (url "https://github.com/racket/datalog")
                   (commit "7d160a86451af8298093d07674a2eb0e1a0161a4")))
             (sha256 (base32
                      "0n5j5gnqh7g31mvgx19ggl18hirzbvq2r189lbngmnrmbc7b73fp"))
             (file-name (git-file-name "racket-datalog" %racket-version)))
          ("datalog" "."))
         (,(origin
             (method git-fetch)
             (uri (git-reference
                   (url "https://github.com/racket/db")
                   (commit %racket-commit)))
             (sha256 (base32
                      "1n02ja0yj3mjjhmz0yv04yfhyvrsznbljn8bjviyfxnm4xf9rcc5"))
             (file-name (git-file-name "racket-db" %racket-version)))
          "db" "db-doc" "db-lib")
         (,(origin
             (method git-fetch)
             (uri (git-reference
                   (url "https://github.com/racket/deinprogramm")
                   (commit %racket-commit)))
             (sha256 (base32
                      "1is6fapgv6rxfjz47nh6qf3kh7y7sjdinakaxqffi46gf1al8prd"))
             (file-name
              (git-file-name "racket-deinprogramm" %racket-version)))
          "deinprogramm" "deinprogramm-signature")
         (,(origin
             (method git-fetch)
             (uri (git-reference
                   (url "https://github.com/racket/distributed-places")
                   (commit %racket-commit)))
             (sha256 (base32
                      "1dajpkj9balqcpv6cdk9hwjz592h1vq8rrx5vncariiac4vbdpa0"))
             (file-name
              (git-file-name "racket-distributed-places" %racket-version)))
          "distributed-places"
          "distributed-places-doc"
          "distributed-places-lib")
         (,(origin
             (method git-fetch)
             (uri (git-reference
                   (url "https://github.com/racket/draw")
                   (commit %racket-commit)))
             (sha256 (base32
                      "1xgjfbh70hqw67z88iqqajg98d04qwbzn6im2wj47rs28jxlm9ly"))
             (file-name (git-file-name "racket-draw" %racket-version)))
          "draw" "draw-doc" "draw-lib")
         (,(origin
             (method git-fetch)
             (uri (git-reference
                   (url "https://github.com/racket/drracket")
                   (commit %racket-commit)))
             (sha256 (base32
                      "0m3l4an3nq2ycd1h287s1az2v2zprjbzd8if2x7d5r71vaj4i00c"))
             (file-name (git-file-name "racket-drracket" %racket-version)))
          "drracket"
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         (,(origin
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             (file-name (git-file-name "racket-errortrace" %racket-version)))
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              ;; see https://github.com/racket/racket/issues/4133
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             (sha256 (base32
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             (file-name
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             (sha256 (base32
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         (,(origin
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         (,(origin
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             (file-name
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          ("racket-cheat" "."))
         (,(origin
             (method git-fetch)
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             (file-name (git-file-name "racket-rackunit" %racket-version)))
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          "rackunit-gui"
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          "schemeunit"
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         (,(origin
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             (file-name (git-file-name "racket-readline" %racket-version)))
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         (,(origin
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         (,(origin
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         (,(origin
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         (,(origin
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          ("sgl" "."))
         (,(origin
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         (,(origin
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          "slideshow" "slideshow-doc" "slideshow-exe" "slideshow-lib"
          "slideshow-plugin")
         (,(origin
             (method git-fetch)
             (uri (git-reference
                   (url "https://github.com/racket/snip")
                   (commit %racket-commit)))
             (sha256 (base32
                      "01r9wc5xr3q3n4yyif6j0a37rgdzmpslxn05k13ksik73b3wj6hj"))
             (file-name (git-file-name "racket-snip" %racket-version)))
          "snip" "snip-lib")
         (,(origin
             (method git-fetch)
             (uri (git-reference
                   (url "https://github.com/racket/typed-racket")
                   (commit %racket-commit)))
             (sha256 (base32
                      "1462kj9yswsxbnw71casylzlvhd7cxrml2v9j7rcsnn9hmrqx4vv"))
             (file-name (git-file-name "racket-typed-racket" %racket-version)))
          "source-syntax"
          "typed-racket"
          "typed-racket-compatibility"
          "typed-racket-doc"
          "typed-racket-lib"
          "typed-racket-more")
         (,(origin
             (method git-fetch)
             (uri (git-reference
                   (url "https://github.com/racket/srfi")
                   ;; Includes an FSDG fix: return to %racket-commit in 8.5.
                   ;; See <https://github.com/racket/srfi/pull/15>.
                   (commit "7243029b135741ce08ae30f877e2f49a2a460b22")))
             (sha256 (base32
                      "0aqbcdv2dfc2xnk0h6zfi56p7bpwqji8s88qds3d03hhh9k28gvn"))
             ;; Use the relevant version for srfi-doc and srfi-lib,
             ;; since we're using a newer commit than the v8.4 tag.
             (file-name (git-file-name "racket-srfi" "1.1")))
          "srfi" "srfi-doc" "srfi-lib" "srfi-lite-lib")
         (,(origin
             (method git-fetch)
             (uri (git-reference
                   (url "https://github.com/racket/string-constants")
                   (commit %racket-commit)))
             (sha256 (base32
                      "1qizjq4n0hzdgdcjjpr94464gsywpsk2g9mnvwzqr7dcqbrsfvn6"))
             (file-name
              (git-file-name "racket-string-constants" %racket-version)))
          "string-constants" "string-constants-doc" "string-constants-lib")
         (,(origin
             (method git-fetch)
             (uri (git-reference
                   (url "https://github.com/racket/swindle")
                   (commit %racket-commit)))
             (sha256 (base32
                      "164gdsphjzdl2vv7zxz7dfk9jwax8njpmim6sidm8qz8a8589y67"))
             (file-name (git-file-name "racket-swindle" %racket-version)))
          ("swindle" "."))
         (,(origin
             (method git-fetch)
             (uri (git-reference
                   (url "https://github.com/racket/syntax-color")
                   (commit %racket-commit)))
             (sha256 (base32
                      "1vf2fc3qvx8a1igi7swsg8gaqhx786sa0vqxd18xhbsidfgb5ywp"))
             (file-name (git-file-name "racket-syntax-color" %racket-version)))
          "syntax-color" "syntax-color-doc" "syntax-color-lib")
         (,(origin
             (method git-fetch)
             (uri (git-reference
                   (url "https://github.com/racket/trace")
                   (commit %racket-commit)))
             (sha256 (base32
                      "070ihla5j796hdarn5wxdwn4xj0xnkm50shgh49jy994mribvhia"))
             (file-name (git-file-name "racket-trace" %racket-version)))
          ("trace" "."))
         (,(origin
             (method git-fetch)
             (uri (git-reference
                   (url "https://github.com/racket/unix-socket")
                   (commit %racket-commit)))
             (sha256 (base32
                      "02dfwas5ynbpyz74w9kwb4wgb37y5wys7svrlmir8k0n9ph9vq0y"))
             (file-name (git-file-name "racket-unix-socket" %racket-version)))
          "unix-socket" "unix-socket-doc" "unix-socket-lib")
         (,(origin
             (method git-fetch)
             (uri (git-reference
                   (url "https://github.com/racket/web-server")
                   (commit %racket-commit)))
             (sha256 (base32
                      "1zgb6jl7zx6258ljs8f3lvryrq5n5zpd71dqzr698m92kw3x2pkn"))
             (file-name (git-file-name "racket-web-server" %racket-version)))
          "web-server" "web-server-doc" "web-server-lib")
         (,(origin
             (method git-fetch)
             (uri (git-reference
                   (url "https://github.com/racket/wxme")
                   (commit %racket-commit)))
             (sha256 (base32
                      "1qp5gr9gqsakiq3alw6m4yyv5vw4i3hp4y4nhq8vl2nkjmirvn0b"))
             (file-name (git-file-name "racket-wxme" %racket-version)))
          "wxme" "wxme-lib")
         (,(origin
             (method git-fetch)
             (uri (git-reference
                   (url "https://github.com/racket/xrepl")
                   (commit %racket-commit)))
             (sha256 (base32
                      "12zjgsy5zqm3fck3ihg4a70wj56s2cnnjyb4jlfi5nnsfqyrnxg3"))
             (file-name (git-file-name "racket-xrepl" %racket-version)))
          "xrepl" "xrepl-doc" "xrepl-lib")))))
    (build-system gnu-build-system)
    (arguments
     ;; We're using #:configure-flags to pass flags for
     ;; `make-installation-layer.rkt` and #:make-flags to pass arguments for
     ;; `raco pkg install`.
     (list
      #:configure-flags
      #~`("--extra-foreign-lib-search-dirs"
          ,(format #f "~s"
                   '(#$@(map (lambda (name)
                               (cond
                                ((this-package-input name)
                                 => (cut file-append <> "/lib"))
                                (else
                                 (raise-exception
                                  (make-exception
                                   (make-assertion-failure)
                                   (make-exception-with-message
                                    "missing input to the 'racket' package")
                                   (make-exception-with-irritants
                                    (list name)))))))
                             '("cairo"
                               "fontconfig-minimal" ;; aka fontconfig
                               "glib"
                               "glu"
                               "gmp"
                               "gtk+"
                               "libjpeg-turbo"
                               "libpng"
                               "libx11"
                               "mesa"
                               "mpfr"
                               "pango"
                               "unixodbc"
                               "libedit")))))
      #:make-flags #~`("main-distribution")
      #:tests? #f ;; packaged separately
      #:modules '((guix build gnu-build-system)
                  (guix build utils)
                  (guix build union)
                  (ice-9 match))
      #:imported-modules `((guix build union)
                           ,@%gnu-build-system-modules)
      #:phases
      #~(modify-phases %standard-phases
          (delete 'unpack)
          (replace 'configure
            (lambda* (#:key inputs configure-flags #:allow-other-keys)
              (let* ((racket (search-input-file inputs "bin/racket")))
                (apply invoke
                       racket
                       #$make-installation-layer.rkt
                       `(,@configure-flags
                         ,(dirname (dirname racket))
                         ,#$output))
                (invoke racket
                        "--config" (string-append #$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 #$output "/lib/racket/pkgs")
                           (search-path-as-list '("share/racket/pkgs")
                                                (map cdr inputs))
                           #:create-all-directories? #t)))
          (replace 'install
            (lambda* (#:key inputs make-flags #:allow-other-keys)
              (let ((racket (search-input-file inputs "/bin/racket")))
                (unless (null? make-flags)
                  (invoke racket
                          "-l-"
                          "pkg/dirs-catalog"
                          "--link"
                          "local-catalog"
                          (string-append #$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 "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.")
    ;; https://download.racket-lang.org/license.html
    ;; The LGPL components are only used by Racket BC.
    (license (list license:asl2.0 license:expat))))

(define make-installation-layer.rkt
  (scheme-file
   "make-installation-layer.rkt"
   `(module
     make-installation-layer racket/base
     (require racket/cmdline
              racket/match
              racket/file
              racket/port
              racket/list
              racket/pretty)
     (define config-file-pth
       "etc/racket/config.rktd")
     (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 extra-foreign-lib-search-dirs '())
     (command-line
      #:once-each
      [("--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 (parent-layer prefix)
      (let* ([config
              (for/fold
               ([config (file->value (build-path parent-layer
                                                 config-file-pth))])
               ([spec (in-list
                       '((lib-dir lib-search-dirs "lib/racket")
                         (share-dir share-search-dirs "share/racket")
                         (links-file
                          links-search-files
                          "share/racket/links.rktd")
                         (pkgs-dir pkgs-search-dirs "share/racket/pkgs")
                         (bin-dir bin-search-dirs "bin")
                         (man-dir man-search-dirs "share/man")
                         (doc-dir doc-search-dirs "share/doc/racket")
                         (include-dir
                          include-search-dirs
                          "include/racket")))])
               (match-define (list main-key search-key pth) spec)
               (hash-set*
                config
                main-key
                (build-path-string prefix pth)
                search-key
                (list* #f
                       (hash-ref config
                                 main-key
                                 (build-path-string parent-layer 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"]
                                          ;; workaroung Guile reader/printer:
                                          ['|3m| "-bc"]
                                          [_ ""])))]
             [bin-dir
              (hash-ref config 'bin-dir)]
             [config
              (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)]
             [new-config-pth
              (build-path prefix config-file-pth)])
        (make-parent-directory* new-config-pth)
        (call-with-output-file*
         new-config-pth
         (lambda (out)
           (pretty-write config out))))))))