;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2016 David Craven <david@craven.ch>
;;;
;;; 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 wayland)
  #:use-module (gnu packages freedesktop) ; xwayland
  #:use-module (gnu packages gl) ; cairo-xcb
  #:use-module (gnu packages glib)
  #:use-module (gnu packages gtk) ; cairo-xcb
  #:use-module (gnu packages libunwind)
  #:use-module (gnu packages linux)
  #:use-module (gnu packages pkg-config)
  #:use-module (gnu packages xdisorg)
  #:use-module (gnu packages xorg) ; xwayland
  #:use-module (guix build-system cmake)
  #:use-module (guix build-system gnu)
  #:use-module (guix download)
  #:use-module ((guix licenses) #:prefix license:)
  #:use-module (guix packages)
  #:use-module (guix utils))

(define-public cairo-xcb
  (package
    (inherit cairo)
    (name "cairo-xcb")
    (inputs
     `(("mesa" ,mesa)
       ,@(package-inputs cairo)))
    (arguments
     `(#:tests? #f
       #:configure-flags
       '("--enable-xlib-xcb" "--enable-gl" "--enable-egl")))))

(define-public xwayland
  (package
    (inherit xorg-server)
    (name "xwayland")
    (inputs
     `(("libepoxy" ,libepoxy)
       ("wayland" ,wayland)
       ,@(package-inputs xorg-server)))
    (arguments
      (substitute-keyword-arguments (package-arguments xorg-server)
        ((#:configure-flags flags)
         `(cons* "--enable-xwayland" "--disable-xorg"
                 "--disable-docs"    "--disable-devel-docs"
                 "--disable-xvfb"    "--disable-xnest"
                 "--disable-xquartz" "--disable-xwin"
                 ,flags))))))

(define-public weston
  (package
    (name "weston")
    (version "1.11.0")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "https://wayland.freedesktop.org/releases/"
                    "weston-" version ".tar.xz"))
              (sha256
               (base32
                "09biddxw3ar797kxf9mywjkb2iwky6my39gpp51ni846y7lqdq05"))))
    (build-system gnu-build-system)
    (native-inputs
     `(("pkg-config" ,pkg-config)
       ("xorg-server" ,xorg-server)))
    (inputs
     `(("cairo" ,cairo-xcb)
       ("dbus" ,dbus)
       ("elogind" ,elogind)
       ("libinput" ,libinput-minimal)
       ("libunwind" ,libunwind)
       ("libxcursor" ,libxcursor)
       ("libxkbcommon" ,libxkbcommon)
       ("mesa" ,mesa)
       ("mtdev" ,mtdev)
       ("linux-pam" ,linux-pam)
       ("wayland" ,wayland)
       ("wayland-protocols" ,wayland-protocols)
       ("xwayland" ,xwayland)))
    (arguments
     `(#:configure-flags
       (list "--disable-setuid-install"
             "--enable-systemd-login"
             (string-append "--with-xserver-path="
                            (assoc-ref %build-inputs "xwayland") "/bin/Xwayland"))
       #:phases
       (modify-phases %standard-phases
         (add-before 'configure 'use-elogind
           (lambda _
             ;; Use elogind instead of systemd
             (substitute* "configure"
               (("libsystemd-login >= 198") "libelogind"))
             (substitute* '("src/launcher-logind.c" "src/weston-launch.c")
               (("#include <systemd/sd-login.h>")
                "#include <elogind/sd-login.h>"))))
         (add-after 'configure 'patch-confdefs.h
           (lambda _
             (system "echo \"#define HAVE_SYSTEMD_LOGIN_209 1\" >> confdefs.h")))
         (add-before 'check 'setup
           (lambda _
             (setenv "HOME" (getcwd))
             (setenv "XDG_RUNTIME_DIR" (getcwd))
             #t))
         (add-before 'check 'start-xorg-server
           (lambda* (#:key inputs #:allow-other-keys)
             ;; The test suite requires a running X server.
             (system (string-append (assoc-ref inputs "xorg-server")
                                    "/bin/Xvfb :1 &"))
             (setenv "DISPLAY" ":1")
             #t)))))
    (home-page "https://wayland.freedesktop.org")
    (synopsis "Reference implementation of a Wayland compositor")
    (description "Weston is the reference implementation of a Wayland
compositor, and a useful compositor in its own right.")
    (license license:expat)))