[Python-checkins] Make sysconfig posix_user not depend on platlibdir (GH-27655)

[encukou]

https://github.com/python/cpython/commit/a5c6bcf24479934fe9c5b859dd1cf72685a0003a
commit: a5c6bcf24479934fe9c5b859dd1cf72685a0003a
branch: main
author: Tzu-ping Chung <uranusjr at gmail.com>
committer: encukou <encukou at gmail.com>
date: 2021-09-07T11:26:42+02:00
summary:

Make sysconfig posix_user not depend on platlibdir (GH-27655)

files:
A Misc/NEWS.d/next/Library/2021-08-07-22-51-32.bpo-44860.PTvRrU.rst
M Lib/sysconfig.py

diff --git a/Lib/sysconfig.py b/Lib/sysconfig.py
index d70088039c987a..95b48f6429d5f8 100644
--- a/Lib/sysconfig.py
+++ b/Lib/sysconfig.py
@@ -101,7 +101,7 @@ def joinuser(*args):
             'stdlib': '{userbase}/{platlibdir}/python{py_version_short}',
             'platstdlib': '{userbase}/{platlibdir}/python{py_version_short}',
             'purelib': '{userbase}/lib/python{py_version_short}/site-packages',
-            'platlib': '{userbase}/{platlibdir}/python{py_version_short}/site-packages',
+            'platlib': '{userbase}/lib/python{py_version_short}/site-packages',
             'include': '{userbase}/include/python{py_version_short}',
             'scripts': '{userbase}/bin',
             'data': '{userbase}',
diff --git a/Misc/NEWS.d/next/Library/2021-08-07-22-51-32.bpo-44860.PTvRrU.rst b/Misc/NEWS.d/next/Library/2021-08-07-22-51-32.bpo-44860.PTvRrU.rst
new file mode 100644
index 00000000000000..70e0be0dab40c3
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2021-08-07-22-51-32.bpo-44860.PTvRrU.rst
@@ -0,0 +1,2 @@
+Fix the ``posix_user`` scheme in :mod:`sysconfig` to not depend on
+:data:`sys.platlibdir`.