From ba489ce3183a840d96cb3e8e1a431a63eb6c2f79 Mon Sep 17 00:00:00 2001
From: Zack A <boppy@nwcpz.com>
Date: Mon, 30 Aug 2021 04:24:30 -0700
Subject: [PATCH] agg: enable build on darwin

Co-authored-by: OPNA2608 <christoph.neidahl@gmail.com>
Co-authored-by: SuperSandro2000 <sandro.jaeckel@gmail.com>
---
 pkgs/development/libraries/agg/default.nix | 20 +++++++++++++++++---
 1 file changed, 17 insertions(+), 3 deletions(-)

diff --git a/pkgs/development/libraries/agg/default.nix b/pkgs/development/libraries/agg/default.nix
index 39e27c909b50..652a00e05f55 100644
--- a/pkgs/development/libraries/agg/default.nix
+++ b/pkgs/development/libraries/agg/default.nix
@@ -9,7 +9,15 @@ stdenv.mkDerivation rec {
     sha256 = "07wii4i824vy9qsvjsgqxppgqmfdxq0xa87i5yk53fijriadq7mb";
   };
   nativeBuildInputs = [ pkg-config ];
-  buildInputs = [ autoconf automake libtool freetype SDL libX11 ];
+  buildInputs = [
+    autoconf
+    automake
+    libtool
+    freetype
+    SDL
+  ] ++ lib.optionals stdenv.isLinux [
+    libX11
+  ];
 
   postPatch = ''
     substituteInPlace include/agg_renderer_outline_aa.h \
@@ -22,7 +30,13 @@ stdenv.mkDerivation rec {
     sh autogen.sh
   '';
 
-  configureFlags = [ "--x-includes=${libX11.dev}/include" "--x-libraries=${libX11.out}/lib" "--enable-examples=no" ];
+  configureFlags = [
+    (lib.strings.enableFeature stdenv.isLinux "platform")
+    "--enable-examples=no"
+  ] ++ lib.optionals stdenv.isLinux [
+    "--x-includes=${lib.getDev libX11}/include"
+    "--x-libraries=${lib.getLib libX11}/lib"
+  ];
 
   # libtool --tag=CXX --mode=link g++ -g -O2 libexamples.la ../src/platform/X11/libaggplatformX11.la ../src/libagg.la -o alpha_mask2 alpha_mask2.o
   # libtool: error: cannot find the library 'libexamples.la'
@@ -43,6 +57,6 @@ stdenv.mkDerivation rec {
 
     license = lib.licenses.gpl2Plus;
     homepage = "http://www.antigrain.com/";
-    platforms = lib.platforms.linux;
+    platforms = lib.platforms.unix;
   };
 }