From 4587e3164bdda117d7b5784422943617936c55e1 Mon Sep 17 00:00:00 2001
From: div72 <60045611+div72@users.noreply.github.com>
Date: Fri, 10 Mar 2023 22:43:11 +0300
Subject: [PATCH] allegro5: support darwin platform

Changes to only include X11 related packages on Linux and fix some
outdated headers to work on new MacOS versions. I have also looked
at support Allegro 4 but it seems that any MacOS version after 10.0x
are not supported.
---
 pkgs/development/libraries/allegro/5.nix | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)

diff --git a/pkgs/development/libraries/allegro/5.nix b/pkgs/development/libraries/allegro/5.nix
index 0ff8f0ea7fc..b3346be1bb7 100644
--- a/pkgs/development/libraries/allegro/5.nix
+++ b/pkgs/development/libraries/allegro/5.nix
@@ -20,17 +20,19 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake pkg-config ];
   buildInputs = [
-    texinfo libXext xorgproto libX11 libXpm libXt libXcursor
-    alsa-lib zlib libpng libvorbis libXxf86dga libXxf86misc
-    libXxf86vm openal libGLU libGL
-    libjpeg flac
-    libXi libXfixes
-    enet libtheora freetype physfs libopus gtk3 pcre libXdmcp
-    libpulseaudio libpthreadstubs
+    texinfo zlib libpng libvorbis openal libGLU libGL
+    libjpeg flac enet libtheora freetype physfs libopus
+    gtk3 pcre
+  ] ++ lib.optionals stdenv.isLinux [
+    libXext xorgproto libX11 libXpm libXt libXcursor alsa-lib
+    libXxf86dga libXxf86misc libXxf86vm libXi libXfixes
+    libXdmcp libpulseaudio libpthreadstubs
   ];
 
   postPatch = ''
     sed -e 's@/XInput2.h@/XI2.h@g' -i CMakeLists.txt "src/"*.c
+    sed -e 's@Kernel/IOKit/hidsystem/IOHIDUsageTables.h@IOKit/hid/IOHIDUsageTables.h@g' -i include/allegro5/platform/alosx.h
+    sed -e 's@OpenAL/@AL/@g' -i addons/audio/openal.c
   '';
 
   cmakeFlags = [ "-DCMAKE_SKIP_RPATH=ON" ];
@@ -40,6 +42,6 @@ stdenv.mkDerivation rec {
     homepage = "https://liballeg.org/";
     license = licenses.zlib;
     maintainers = [ maintainers.raskin ];
-    platforms = platforms.linux;
+    platforms = platforms.linux ++ platforms.darwin;
   };
 }