From fb2e964012a16c21feb718906b792854243a7ede Mon Sep 17 00:00:00 2001
From: Wael Nasreddine <wael.nasreddine@gmail.com>
Date: Wed, 31 Jul 2019 18:29:11 -0700
Subject: [PATCH] python3Packages.xgboost: fix the build on Darwin (#65703)

---
 pkgs/development/python-modules/xgboost/default.nix             | 2 ++
 .../python-modules/xgboost/lib-path-for-python.patch            | 2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/python-modules/xgboost/default.nix b/pkgs/development/python-modules/xgboost/default.nix
index bbe7c9862606..c75362436e4a 100644
--- a/pkgs/development/python-modules/xgboost/default.nix
+++ b/pkgs/development/python-modules/xgboost/default.nix
@@ -3,6 +3,7 @@
 , nose
 , scipy
 , scikitlearn
+, stdenv
 , xgboost
 , substituteAll
 , pandas
@@ -19,6 +20,7 @@ buildPythonPackage rec {
     (substituteAll {
       src = ./lib-path-for-python.patch;
       libpath = "${xgboost}/lib";
+      extention = stdenv.hostPlatform.extensions.sharedLibrary;
     })
   ];
 
diff --git a/pkgs/development/python-modules/xgboost/lib-path-for-python.patch b/pkgs/development/python-modules/xgboost/lib-path-for-python.patch
index 86c628c694bf..c9252c12fed1 100644
--- a/pkgs/development/python-modules/xgboost/lib-path-for-python.patch
+++ b/pkgs/development/python-modules/xgboost/lib-path-for-python.patch
@@ -35,4 +35,4 @@ index d87922c0..859a30fb 100644
 -            'did you install compilers and run build.sh in root path?\n'
 -            'List of candidates:\n' + ('\n'.join(dll_path)))
 -    return lib_path
-+    return ["@libpath@/libxgboost.so"]
++    return ["@libpath@/libxgboost@extention@"]