nixpkgs/pkgs/development/python-modules/xgboost/lib-path-for-python.patch

diff --git a/python-package/xgboost/libpath.py b/python-package/xgboost/libpath.py
index d87922c0..859a30fb 100644
--- a/python-package/xgboost/libpath.py
+++ b/python-package/xgboost/libpath.py
@@ -19,32 +19,4 @@ def find_lib_path():
     lib_path: list(string)
        List of all found library path to xgboost
     """
-    curr_path = os.path.dirname(os.path.abspath(os.path.expanduser(__file__)))
-    # make pythonpack hack: copy this directory one level upper for setup.py
-    dll_path = [curr_path, os.path.join(curr_path, '../../lib/'),
-                os.path.join(curr_path, './lib/'),
-                os.path.join(sys.prefix, 'xgboost')]
-    if sys.platform == 'win32':
-        if platform.architecture()[0] == '64bit':
-            dll_path.append(os.path.join(curr_path, '../../windows/x64/Release/'))
-            # hack for pip installation when copy all parent source directory here
-            dll_path.append(os.path.join(curr_path, './windows/x64/Release/'))
-        else:
-            dll_path.append(os.path.join(curr_path, '../../windows/Release/'))
-            # hack for pip installation when copy all parent source directory here
-            dll_path.append(os.path.join(curr_path, './windows/Release/'))
-        dll_path = [os.path.join(p, 'xgboost.dll') for p in dll_path]
-    elif sys.platform.startswith('linux') or sys.platform.startswith('freebsd'):
-        dll_path = [os.path.join(p, 'libxgboost.so') for p in dll_path]
-    elif sys.platform == 'darwin':
-        dll_path = [os.path.join(p, 'libxgboost.dylib') for p in dll_path]
-
-    lib_path = [p for p in dll_path if os.path.exists(p) and os.path.isfile(p)]
-
-    # From github issues, most of installation errors come from machines w/o compilers
-    if not lib_path and not os.environ.get('XGBOOST_BUILD_DOC', False):
-        raise XGBoostLibraryNotFound(
-            'Cannot find XGBoost Library in the candidate path, ' +
-            '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@extention@"]