From 7ba969f87e68cad7c813210e758cff0b2cdd4047 Mon Sep 17 00:00:00 2001
From: James Kay <james@hadean.com>
Date: Wed, 21 Feb 2018 12:23:11 +0000
Subject: [PATCH] godot: stop build process from looking in global directories

---
 pkgs/development/tools/godot/default.nix         |  7 +++++--
 .../tools/godot/dont_clobber_environment.patch   | 16 ++++++++++++++++
 2 files changed, 21 insertions(+), 2 deletions(-)
 create mode 100644 pkgs/development/tools/godot/dont_clobber_environment.patch

diff --git a/pkgs/development/tools/godot/default.nix b/pkgs/development/tools/godot/default.nix
index 395080c3da5..9b515511953 100644
--- a/pkgs/development/tools/godot/default.nix
+++ b/pkgs/development/tools/godot/default.nix
@@ -23,10 +23,13 @@ in stdenv.mkDerivation rec {
   buildInputs = [
     gcc5 scons libX11 libXcursor libXinerama libXrandr libXrender
     libXi libXext libXfixes freetype openssl alsaLib libpulseaudio
-    libGLU zlib
+    libGLU zlib yasm
   ];
 
-  patches = [ ./pkg_config_additions.patch ];
+  patches = [
+    ./pkg_config_additions.patch
+    ./dont_clobber_environment.patch
+  ];
 
   enableParallelBuilding = true;
 
diff --git a/pkgs/development/tools/godot/dont_clobber_environment.patch b/pkgs/development/tools/godot/dont_clobber_environment.patch
new file mode 100644
index 00000000000..c57c85588a0
--- /dev/null
+++ b/pkgs/development/tools/godot/dont_clobber_environment.patch
@@ -0,0 +1,16 @@
++++ build/SConstruct
+@@ -69,10 +69,10 @@
+         custom_tools = ['mingw']
+ 
+ env_base = Environment(tools=custom_tools)
+-if 'TERM' in os.environ:
+-    env_base['ENV']['TERM'] = os.environ['TERM']
+-env_base.AppendENVPath('PATH', os.getenv('PATH'))
+-env_base.AppendENVPath('PKG_CONFIG_PATH', os.getenv('PKG_CONFIG_PATH'))
++for k in ("TERM", "PATH", "PKG_CONFIG_PATH"):
++    if (k in os.environ):
++        env_base["ENV"][k] = os.environ[k]
++
+ env_base.global_defaults = global_defaults
+ env_base.android_maven_repos = []
+ env_base.android_flat_dirs = []