From 38af903506e9b18c6350c1dadcb489f057713f36 Mon Sep 17 00:00:00 2001
From: neonene <53406459+neonene@users.noreply.github.com>
Date: Fri, 17 Jun 2022 06:41:57 +0900
Subject: gh-91985: Ensure in-tree builds override platstdlib_dir in every path
 calculation (GH-93641)

---
 Modules/getpath.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'Modules/getpath.py')

diff --git a/Modules/getpath.py b/Modules/getpath.py
index 47f075caf55..dceeed7702c 100644
--- a/Modules/getpath.py
+++ b/Modules/getpath.py
@@ -461,7 +461,8 @@ if not py_setpath and not home_was_set:
 
 build_prefix = None
 
-if not home_was_set and real_executable_dir and not py_setpath:
+if ((not home_was_set and real_executable_dir and not py_setpath)
+        or config.get('_is_python_build', 0) > 0):
     # Detect a build marker and use it to infer prefix, exec_prefix,
     # stdlib_dir and the platstdlib_dir directories.
     try:
-- 
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