#| Copyright (C) 2025 Peter McGoron
 |
 | This program 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.
 |
 | This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.
 |#

(use-modules (mcgoron guix chibi)
             (gnu packages libffi)
             (gnu packages commencement)
             (gnu packages base)
             (guix git-download)
             (guix build-system gnu)
             (guix packages)
             (guix gexp)
             (guix licenses))

(package
 (name "pffi-chibi")
 (version "0.5.0")
 (synopsis "Portable Foreign Function Interface for R7RS")
 (description "Portable Foreign Function Interface for R7RS")
 (license lgpl3+)
 (home-page "https://sr.ht/~retropikzel/r7rs-pffi")
 (source
  (origin
   (method git-fetch)
   (uri (git-reference
         (url "https://git.sr.ht/~retropikzel/r7rs-pffi/")
         (commit "v0.5.0")))
   (file-name (git-file-name "r7rs-pffi" version))
   (sha256
    (base32 "1ggkafggyqqla6ba8dlhzvvf6v7i6scpa2xyr1mfxxy8iwnl70aa"))))
 (build-system gnu-build-system)
 (inputs (list chibi-scheme-with-path libffi))
 (native-inputs (list gcc-toolchain glibc))
 (arguments
  `(#:phases
    (modify-phases %standard-phases
      (delete 'configure)
      (replace 'build
        (lambda* (#:key outputs #:allow-other-keys)
          (invoke "chibi-ffi"
                  "retropikzel/r7rs-pffi/r7rs-pffi-chibi.stub")
          (invoke "gcc"
                  "-o"
                  "retropikzel/r7rs-pffi/r7rs-pffi-chibi.so"
                  "-fPIC"
                  "-shared"
                  "retropikzel/r7rs-pffi/r7rs-pffi-chibi.c"
                  "-lchibi-scheme"
                  "-lffi")))
      (replace 'check
        (lambda* (#:key (test-target "check") (tests? #t) #:allow-other-keys)
          (display "tests don't work yet\n")
          #;(when tests?
              (invoke "chibi-scheme" "-A" "." "test.scm"))))
      (replace 'install
        (lambda* (#:key outputs #:allow-other-keys)
          (let* ((out (assoc-ref outputs "out"))
                 (base-dir (string-append out
                                          "/share/guix-chibi/retropikzel/"))
                 (copy (lambda (name)
                         (invoke "cp"
                                 (string-append "retropikzel/" name)
                                 (string-append base-dir name)))))
            (invoke "mkdir" "-p" (string-append base-dir "/r7rs-pffi"))
            (for-each copy
                      '("r7rs-pffi.sld"
                        "r7rs-pffi/r7rs-pffi-chibi.so"
                        "r7rs-pffi/chibi.scm"
                        "r7rs-pffi/main.scm"
                        "r7rs-pffi/struct.scm")))))))))