From 9fd50db3ae9d3582751087974566a926f8db9680 Mon Sep 17 00:00:00 2001
From: Pierre Neidhardt <mail@ambrevar.xyz>
Date: Mon, 20 May 2019 17:00:45 +0200
Subject: gnu: Add mygui-gl.

* gnu/packages/game-development.scm (mygui-gl): New variable.
---
 gnu/packages/game-development.scm | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

(limited to 'gnu/packages/game-development.scm')

diff --git a/gnu/packages/game-development.scm b/gnu/packages/game-development.scm
index a3585630f0..93e2405ed3 100644
--- a/gnu/packages/game-development.scm
+++ b/gnu/packages/game-development.scm
@@ -32,6 +32,7 @@
 ;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
 
 (define-module (gnu packages game-development)
+  #:use-module (srfi srfi-1)
   #:use-module ((guix licenses) #:prefix license:)
   #:use-module (guix packages)
   #:use-module (guix download)
@@ -1076,6 +1077,29 @@ of use.")
     (home-page "http://mygui.info/")
     (license license:expat)))
 
+(define-public mygui-gl
+  ;; Closure size is reduced by some 800 MiB.
+  (package
+    (inherit mygui)
+    (name "mygui-gl")
+    (version "3.2.2")
+    (arguments
+     (substitute-keyword-arguments (package-arguments mygui)
+       ((#:configure-flags _)
+        `(cons* "-DMYGUI_RENDERSYSTEM=4" ; 3 is Ogre, 4 is OpenGL.
+                ;; We can't reuse the flags because of the mention to Ogre.
+                (list "-DMYGUI_INSTALL_DOCS=TRUE"
+                      ;; Demos and tools are Windows-specific:
+                      ;; https://github.com/MyGUI/mygui/issues/24.
+                      "-DMYGUI_BUILD_DEMOS=FALSE"
+                      "-DMYGUI_BUILD_TOOLS=FALSE")))))
+    (inputs
+     `(("mesa" ,mesa)
+       ("glu" ,glu)
+       ,@(fold alist-delete (package-inputs mygui)
+               '("ogre"))))
+    (synopsis "Fast, flexible and simple GUI (OpenGL backend)")))
+
 (define-public openmw
   (package
     (name "openmw")
-- 
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