https://github.com/python/cpython/commit/b19839b40c771904b87ea35127f9fa1b8058597e
commit: b19839b40c771904b87ea35127f9fa1b8058597e
branch: main
author: Harjoth Khara <[email protected]>
committer: vstinner <[email protected]>
date: 2026-06-29T15:28:18+02:00
summary:
gh-151096: Fix test_embed with split exec prefix (#151288)
files:
A Misc/NEWS.d/next/Tests/2026-06-16-05-11-38.gh-issue-151096.Kq3Lp9.rst
M Lib/test/test_embed.py
diff --git a/Lib/test/test_embed.py b/Lib/test/test_embed.py
index 2d1533c46b98f33..d0ac1d1c0cb1a15 100644
--- a/Lib/test/test_embed.py
+++ b/Lib/test/test_embed.py
@@ -1458,7 +1458,7 @@ def module_search_paths(self, prefix=None,
exec_prefix=None):
if prefix is None:
prefix = config['config']['prefix']
if exec_prefix is None:
- exec_prefix = config['config']['prefix']
+ exec_prefix = config['config']['exec_prefix']
if MS_WINDOWS:
return config['config']['module_search_paths']
else:
@@ -1614,8 +1614,10 @@ def test_init_is_python_build_with_home(self):
expected_paths[1 if MS_WINDOWS else 2] = os.path.normpath(
os.path.join(exedir, f'{f.read()}\n$'.splitlines()[0]))
if not MS_WINDOWS:
- # PREFIX (default) is set when running in build directory
- prefix = exec_prefix = sys.prefix
+ # PREFIX and EXEC_PREFIX (defaults) are set when running in the
+ # build directory and may differ with --exec-prefix (gh-151096).
+ prefix = sys.prefix
+ exec_prefix = sys.exec_prefix
# stdlib calculation (/Lib) is not yet supported
expected_paths[0] = self.module_search_paths(prefix=prefix)[0]
config.update(prefix=prefix, base_prefix=prefix,
diff --git
a/Misc/NEWS.d/next/Tests/2026-06-16-05-11-38.gh-issue-151096.Kq3Lp9.rst
b/Misc/NEWS.d/next/Tests/2026-06-16-05-11-38.gh-issue-151096.Kq3Lp9.rst
new file mode 100644
index 000000000000000..3251c6fb094723b
--- /dev/null
+++ b/Misc/NEWS.d/next/Tests/2026-06-16-05-11-38.gh-issue-151096.Kq3Lp9.rst
@@ -0,0 +1,2 @@
+Fix ``test_embed`` failing when CPython is configured with a split exec prefix
+(``--exec-prefix`` differing from ``--prefix``).
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