From d06770b9a03b6fe1e2fe34c2026337c58c326af5 Mon Sep 17 00:00:00 2001
From: Herwig Hochleitner <herwig@bendlas.net>
Date: Thu, 20 Dec 2018 20:03:26 +0100
Subject: [PATCH] allegro5: fix build for mesa 18.2.5

mesa 18.2.5, introduced in 6b490ee2964662d69f0d38e71f0dc3565ad49515
changed some private headers, that allegro is relying on. This fix backports
the relevant commit from allegro upstream

cc @7c6f434c
---
 pkgs/development/libraries/allegro/5.nix | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/libraries/allegro/5.nix b/pkgs/development/libraries/allegro/5.nix
index 5e82a1a3c6b..269a139a3d6 100644
--- a/pkgs/development/libraries/allegro/5.nix
+++ b/pkgs/development/libraries/allegro/5.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, texinfo, libXext, xextproto, libX11, xproto
+{ stdenv, fetchFromGitHub, fetchpatch, texinfo, libXext, xextproto, libX11, xproto
 , libXpm, libXt, libXcursor, alsaLib, cmake, zlib, libpng, libvorbis
 , libXxf86dga, libXxf86misc, xf86dgaproto, xf86miscproto
 , xf86vidmodeproto, libXxf86vm, openal, libGLU_combined, kbproto, libjpeg, flac
@@ -28,7 +28,15 @@ stdenv.mkDerivation rec {
     libpulseaudio libpthreadstubs
   ];
 
-  patchPhase = ''
+  patches = [
+   # fix compilation with mesa 18.2.5
+   (fetchpatch {
+     url = "https://github.com/liballeg/allegro5/commit/a40d30e21802ecf5c9382cf34af9b01bd3781e47.patch";
+     sha256 = "1f1xlj5y2vr6wzmcz04s8kxn8cfdwrg9kjlnvpz9dix1z3qjnd4m";
+   })
+  ];
+
+  postPatch = ''
     sed -e 's@/XInput2.h@/XI2.h@g' -i CMakeLists.txt "src/"*.c
   '';