;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2022 Konrad Hinsen <konrad.hinsen@fastmail.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 minimacy)
  #:use-module (gnu packages)
  #:use-module (gnu packages xorg)
  #:use-module (gnu packages gl)
  #:use-module (gnu packages linux)
  #:use-module (guix download)
  #:use-module (guix gexp)
  #:use-module (guix git-download)
  #:use-module (guix build-system gnu)
  #:use-module (guix download)
  #:use-module (guix gexp)
  #:use-module (guix git-download)
  #:use-module ((guix licenses) #:prefix license:)
  #:use-module (guix packages))

(define-public minimacy
  (package
    (name "minimacy")
    (version "0.6.2")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                    (url "https://github.com/ambermind/minimacy/")
                    (commit version)))
              (file-name (git-file-name name version))
              (sha256
               (base32
                "1x9i1spf79lq3kxms55dx7lf8pl84cyblq313sjyfpr9l187ailb"))
              (patches (search-patches "minimacy.patch"))
              (modules '((guix build utils)))
              (snippet '(delete-file-recursively "windows"))))
    (build-system gnu-build-system)
    (inputs (list libx11 libxext alsa-lib mesa glu))
    (outputs '("out"        ; core
               "gui"        ; for GUI programs, with X11 and ALSA
               "opengl"))   ; for GUI programs, with X11, OpenGL, and ALSA
    (arguments
     (list
      #:tests? #f           ; no tests
      #:phases
      #~(modify-phases %standard-phases
          (add-after 'unpack 'patch-path
            (lambda* (#:key outputs #:allow-other-keys)
              (substitute* "src/hw.c"
                (("minimacy-in-gnu-store")
                 (assoc-ref outputs "out")))))
          (delete 'configure)
          (replace 'build
            (lambda _
              (chdir "unix")
              (invoke "make" "nox")
              (for-each delete-file
                        (find-files "../obj" "\\.o$"))
              (invoke "make" "x11")
              (for-each delete-file
                        (find-files "../obj" "\\.o$"))
              (invoke "make" "x11gl")
              (chdir "..")))
          (replace 'install
            (lambda* (#:key outputs #:allow-other-keys)
              (let ((out (assoc-ref outputs "out"))
                    (gui (assoc-ref outputs "gui"))
                    (opengl (assoc-ref outputs "opengl")))
                (mkdir-p (string-append out "/rom"))
                (mkdir-p (string-append out "/system"))
                (copy-recursively "rom"
                                  (string-append out "/rom"))
                (copy-recursively "system"
                                  (string-append out "/system"))
                (install-file "bin/minimacy"
                              (string-append out "/bin"))
                (install-file "bin/minimacyX11"
                              (string-append gui "/bin"))
                (install-file "bin/minimacyX11GL"
                              (string-append opengl "/bin"))))))))
    (synopsis "Minimalist computing system")
    (description
     "Minimacy is a minimalist computing technology.
It consists of a programming language (compiler plus virtual machine)
and a library, written such that the whole system can be fully
understood by a single person.  An optional extension to the virtual
machine adds X11 and ALSA for user interfaces, another extension
adds OpenGL support.")
    (home-page "https://minimacy.net/")
    (license license:gpl2)))