python3Packages.xgboost: fix the build on Darwin (#65703)

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;
     })
   ];
 

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@"]