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-rw-r--r--setuptools/_distutils/sysconfig.py7
1 files changed, 7 insertions, 0 deletions
diff --git a/setuptools/_distutils/sysconfig.py b/setuptools/_distutils/sysconfig.py
index 879b6981..8e42b7b8 100644
--- a/setuptools/_distutils/sysconfig.py
+++ b/setuptools/_distutils/sysconfig.py
@@ -150,6 +150,7 @@ def get_python_lib(plat_specific=0, standard_lib=0, prefix=None):
return os.path.join(prefix, "lib-python", sys.version[0])
return os.path.join(prefix, 'site-packages')
+ is_default_prefix = not prefix or os.path.normpath(prefix) in ('/usr', '/usr/local')
if prefix is None:
if standard_lib:
prefix = plat_specific and BASE_EXEC_PREFIX or BASE_PREFIX
@@ -168,6 +169,12 @@ def get_python_lib(plat_specific=0, standard_lib=0, prefix=None):
"python" + get_python_version())
if standard_lib:
return libpython
+ elif (is_default_prefix and
+ 'PYTHONUSERBASE' not in os.environ and
+ 'VIRTUAL_ENV' not in os.environ and
+ 'real_prefix' not in sys.__dict__ and
+ sys.prefix == sys.base_prefix):
+ return os.path.join(prefix, "lib", "python3", "dist-packages")
else:
return os.path.join(libpython, "site-packages")
elif os.name == "nt":