#| 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 (gnu packages guile)
             (guix build-system copy)
             (guix git-download)
             (guix packages)
             (guix gexp)
             (guix licenses))

(package
 (name "pffi-guile")
 (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 copy-build-system)
 (inputs (list guile-3.0))
 (arguments
  (let* ((base-dir "share/guile/site/3.0/retropikzel/")
         (libdir (string-append base-dir "r7rs-pffi/")))
    ;; Guile doesn't load sld files. It also won't load relative to the
    ;; site directory.
    `(#:phases
      (modify-phases %standard-phases
        (add-after 'unpack 'patch-paths
          (lambda* (#:key outputs #:allow-other-keys)
            (let* ((out (string-append (assoc-ref outputs "out")
                                       "/"
                                       ,libdir)))
              (substitute* '("retropikzel/r7rs-pffi.sld")
                (("\\(include \"r7rs-pffi")
                 (string-append "(include \""
                                out)))))))
      #:install-plan
      '(("retropikzel/r7rs-pffi.sld" ,(string-append
                                       base-dir
                                       "r7rs-pffi.scm"))
        ("retropikzel/r7rs-pffi/guile.scm" ,libdir)
        ("retropikzel/r7rs-pffi/main.scm" ,libdir)
        ("retropikzel/r7rs-pffi/struct.scm" ,libdir))))))