*** /usr/lib/python3.6/distutils/sysconfig.py 2019-10-09 19:14:55
--- /usr/lib/python3.6/distutils/sysconfig.py 2019-10-09 19:14:55
***************
*** 143,149 ****
                '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":
--- 143,152 ----
                'VIRTUAL_ENV' not in os.environ and
                'real_prefix' not in sys.__dict__ and
                sys.prefix == sys.base_prefix):
!             if prefix is not None and os.path.normpath(prefix) == '/usr/local':
!                 return return os.path.join(prefix, "lib", "python" + sys.version[:3], "dist-packages")
!             else:
!                 return return os.path.join(prefix, "lib", "python3", "dist-packages")
          else:
              return os.path.join(libpython, "site-packages")