;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2021 Vincent Legoll <vincent.legoll@gmail.com>
;;;
;;; 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 sel4)
  #:use-module (gnu packages)
  #:use-module (gnu packages python)
  #:use-module (gnu packages python-xyz)
  #:use-module (gnu packages python-web)
  #:use-module (gnu packages ninja)
  #:use-module (gnu packages xml)
  #:use-module (guix build-system cmake)
  #:use-module ((guix licenses) #:prefix license:)
  #:use-module (guix packages)
  #:use-module (guix git-download))

(define-public sel4
  (package
    (name "sel4")
    (version "12.0.0")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/seL4/seL4")
             (commit version)))
       (file-name (git-file-name name version))
       (sha256
        (base32 "1zkx6x5jly8f75ph9jxd2jrp1kg5l001zkfqpmjf8ancsi1b43y7"))))
    (build-system cmake-build-system)
    (arguments
     '(#:tests? #f ;; No need for tests when you have formal proof of correctness
       #:configure-flags
       (list
        "-G" "Ninja"
        "-DKernelArch=x86"
        "-DCROSS_COMPILER_PREFIX="
        "-DCMAKE_TOOLCHAIN_FILE=../source/gcc.cmake"
        "-C" "../source/configs/X64_verified.cmake")
       #:phases (modify-phases %standard-phases
                  (replace 'build
                    (lambda _
                      (invoke "ninja" "kernel.elf")))
                  (replace 'install
                    (lambda _
                      (mkdir-p %output)
                      (copy-file "kernel.elf"
                                 (string-append %output "/kernel.elf")))))))
    (native-inputs
     `(("libxml2" ,libxml2)
       ("ninja" ,ninja)
       ("python" ,python-3)
       ("python-future" ,python-future)
       ("python-jinja2" ,python-jinja2)
       ("python-paste" ,python-paste)
       ("python-ply" ,python-ply)
       ("python-six" ,python-six)
       ))
    (synopsis "Operating System microkernel")
    (description "Formally verified member of the L4 microkernel family.")
    (home-page "https://sel4.systems")
    (license (list license:asl2.0 ; And also a variant in LICENSES/SHL-0.51.txt
                   license:bsd-2
                   license:bsd-3
                   license:cc-by-sa4.0
                   license:gpl2
                   license:gpl2+
                   license:lppl1.3c
                   license:x11))))