;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2019 Leo Famulari <address@hidden>
;;;
;;; This file is NOT part of GNU Guix, but is supposed to be used with GNU
;;; Guix and thus has the same license.
;;;
;;; 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 (leo packages wireguard)
  #:use-module (guix git-download)
  #:use-module (guix licenses)
  #:use-module (guix packages)
  #:use-module (guix build utils)
  #:use-module (guix utils) ;substitute-keyword-arguments
  #:use-module (gnu packages linux))

(define %wireguard-version "0.0.20190123")

(define wireguard-source
  (origin
    ;; XXX It's simpler to have a directory than a tarball?
    (method git-fetch)
    (uri (git-reference
           (url "https://git.zx2c4.com/WireGuard")
           (commit %wireguard-version)))
    (file-name (string-append "wireguard-source-" %wireguard-version))
    (sha256
     (base32
      "1lyl3nmsgp9jk9js3vz032vdx7cg9ynkwzdr19wrr26pkxhpcnxr"))))

(define-public linux-libre-with-wireguard
  (package
    (inherit linux-libre)
    (name "linux-libre-with-wireguard")
    (native-inputs
     `(("wireguard-source" ,wireguard-source)
       ,@(package-native-inputs linux-libre)))
    (arguments
     (substitute-keyword-arguments (package-arguments linux-libre)
       ((#:phases phases)
        `(modify-phases ,phases
           (add-after 'unpack 'add-wireguard
             (lambda* (#:key inputs outputs #:allow-other-keys)
               (let* ((wireguard-src (assoc-ref inputs "wireguard-source"))
                      (wireguard-patch-tool (string-append wireguard-src "/contrib/kernel-tree/jury-rig.sh")))
                 (invoke "sh" wireguard-patch-tool "."))))))))))