[bug#40035] Add widelands game

[Alberto EFG]

Hello.

This is my first patch. I hope everything is correct, but I know there
might be some mistakes. Pleaste let me know.

 guix lint - I ran it and I think I have no errors now.
 guix size - Around 1.4 gb. I am not sure what to do
 guix refresh --list-dependent - Nothing is dependent

Building in my platform (x86_64) works 

Building with qemu -
    armhf   - not working
    aarch64 - working
    i68     - working
    x86_64  - working

>From a58ad8525f0293abbc7fd0b93214c40940b7870b Mon Sep 17 00:00:00 2001
From: Alberto Eleuterio Flores Guerrero <address@hidden>
Date: Wed, 11 Mar 2020 21:50:14 -0600
Subject: [PATCH] gnu: Add widelands.

* gnu/packages/games.scm (widelands): New variable.
---
 gnu/packages/games.scm | 46 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)

diff --git a/gnu/packages/games.scm b/gnu/packages/games.scm
index 322e309591..020d31bb70 100644
--- a/gnu/packages/games.scm
+++ b/gnu/packages/games.scm
@@ -46,6 +46,7 @@
 ;;; Copyright © 2019, 2020 Timotej Lazar <address@hidden>
 ;;; Copyright © 2019 Josh Holland <address@hidden>
 ;;; Copyright © 2017, 2019 Hartmut Goebel <address@hidden>
+;;; Copyright © 2020 Alberto Eleuterio Flores Guerrero <address@hidden>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -10157,3 +10158,48 @@ best human chess grandmasters.  It can be used with 
UCI-compatible GUIs like
 ChessX.")
     (home-page "https://stockfishchess.org/";)
     (license license:gpl3+)))
+
+(define-public widelands
+  (let ((commit "d9513d413f2558f9ef6f033a7685bf9881fbdbb3")
+       (revision "1"))
+    (package
+     (name "widelands")
+     (version (git-version "20" revision commit))
+     (source (origin
+             (method git-fetch)
+             (uri (git-reference
+                   (url "https://github.com/widelands/widelands.git";)
+                   (commit commit)))
+             (file-name (git-file-name name version))
+             (sha256
+              (base32 
"0rsm25kb60xfvib8xk2hcqbppcyjgaiax1rpxxn6vlwrx68nndqp"))))
+     (build-system cmake-build-system)
+     (arguments
+      `(#:tests? #f
+       #:configure-flags
+       (let* ((out (assoc-ref %outputs "out"))
+              (share (string-append out "/share")))
+         (list    "-DCMAKE_BUILD_TYPE=Release"
+                  (string-append "-DCMAKE_INSTALL_PREFIX=" out "/bin")
+                  (string-append "-DWL_INSTALL_BASEDIR=" share "/widelands")
+                  (string-append "-DWL_INSTALL_DATADIR=" share "/widelands")
+                  "-DOPTION_BUILD_WEBSITE_TOOLS=OFF"))))
+     (inputs
+      `(("sdl" ,(sdl-union (list sdl2
+                                sdl2-image
+                                sdl2-mixer
+                                sdl2-ttf)))
+       ("gettext" ,gettext-minimal)
+        ("icu4c" ,icu4c)
+       ("libpng" ,libpng)
+       ("zlib" ,zlib)
+       ("boost" ,boost)
+       ("python" ,python)
+       ("glew" ,glew)))
+     (synopsis "Real-time strategy game")
+     (description
+      "Widelands is a free, open source real-time strategy game with
+ singleplayer campaigns and a multiplayer mode.  The game was inspired
+ by Settlers II but has significantly more variety and depth to it.  ")
+     (home-page "https://www.widelands.org/";)
+     (license license:gpl2+))))
-- 
2.25.1