;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2020 Martin Becze <mjbecze@riseup.net>
;;;
;;; 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 loko)
  #:use-module (guix packages)
  #:use-module (guix git-download)
  #:use-module (guix build-system gnu)
  #:use-module ((guix licenses) #:prefix license:)
  #:use-module (gnu packages package-management)
  #:use-module (gnu packages chez))

(define pfds
  (let ((name "pfds")
	(version "0.3"))
      (origin
	(method git-fetch)
	(uri (git-reference
	      (url "https://github.com/ijp/pfds.git")
	      (commit (string-append "v" version))))
	(file-name (git-file-name name version))
	(sha256
	 (base32 "19y33wg94pf0n98dkfqd1zbw93fgky4sawxsxl6s3vyqwl0yi5vh")))))

(define machine-code
  (let ((name "machine-code")
	(version "2.1.0"))
      (origin
	(method git-fetch)
	(uri (git-reference
	      (url "https://github.com/weinholt/machine-code.git")
	      (commit (string-append "v" version))))
	(file-name (git-file-name name version))
	(sha256
	 (base32 "0wzj3caj2jypzyjqfkfqkvr3kkbjabsnhldv9kvnx9w9qnria5yd")))))

(define struct-pack
  (let ((name "struct-pack")
	(version "1.1.1"))
      (origin
	(method git-fetch)
	(uri (git-reference
	      (url "https://github.com/weinholt/struct-pack.git")
	      (commit (string-append "v" version))))
	(file-name (git-file-name name version))
	(sha256
	 (base32 "0hd72m821pahjphzyjn26i55542v8makr55xzjll2cycja4wsbc1")))))

(define laesare
  (let ((name "laesare")
	(version "1.0.0"))
      (origin
	(method git-fetch)
	(uri (git-reference
	      (url "https://github.com/weinholt/laesare.git")
	      (commit (string-append "v" version))))
	(file-name (git-file-name name version))
	(sha256
	 (base32 "15q619gzw717r8r1ql23zfdaibpnp9qqs96032vdc3rj74msxc92")))))

(define-public loko-scheme
  (package
    (name "loko-scheme")
    (version "0.6.0")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                    (url "https://gitlab.com/weinholt/loko.git")
                    (commit (string-append "v" version))))
              (sha256 (base32 "019jlh3lywy912cfz689c9fxgf4bi5700i9k04g7sl5w5gchj36m"))
              (file-name (git-file-name name version))))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f
       #:strip-binaries? #f
       #:make-flags
       (let ((out (assoc-ref %outputs "out")))
         (list
          (string-append "PREFIX=" out)
          (string-append "GDB_AUTOLOAD_PATH=" out "/share/gdb/auto-load")))
       #:phases
       (modify-phases %standard-phases
         (delete 'configure)
         (add-before 'build 'akku-fixes
           (lambda* (#:key inputs #:allow-other-keys)
             (delete-file "Akku.lock")
             (substitute* "Akku.manifest"
               (("\\(depends.*") "(depends)"))
             (invoke "akku" "install")
             (symlink (assoc-ref inputs "struct-pack") "./.akku/lib/struct")
             (symlink (assoc-ref inputs "laesare") "./.akku/lib/laesare")
             (symlink (assoc-ref inputs "machine-code") "./.akku/lib/machine-code")
             (symlink (assoc-ref inputs "pfds") "./.akku/lib/pfds")
             (substitute* ".akku/env"
               (("/bin/sh") (which "sh")))
             #t)))))
    (native-inputs
     `(("akku" ,akku)
       ("chez-scheme" ,chez-scheme)
       ("struct-pack" ,struct-pack)
       ("laesare" ,laesare)
       ("pfds" ,pfds)
       ("machine-code" ,machine-code)))
    (home-page "https://scheme.fail")
    (synopsis "Implementation of the algorithmic language Scheme")
    (description
     "Loko Scheme is intended to be a platform for application and operating system
development.  It is written purely in Scheme and some assembler (i.e. no C code at
the bottom).  Both the R6RS and the R7RS standards are supported.")
    (license license:agpl3+)))