"get_python_lib() :for pip install, data_files with get_python_lib() are copied with duplicate path name on ubuntu"

[Saba Kauser]

Hi there,

I have the following in setup.py :
from distutils.sysconfig import get_python_lib

data_files = [ (get_python_lib(), ['./README.md']),
(get_python_lib(), ['./LICENSE']),
 (get_python_lib(), ['./CHANGES']),
(get_python_lib(), ['./config.py.sample'])]


setup( name = PACKAGE,
version = VERSION,
license = LICENSE,
description = 'Python DBI driver for DB2 (LUW, zOS, i5) and IDS',
author = 'IBM Application Development Team',
.
.
data_files = data_files,
include_package_data = True,
cmdclass = cmd_class,
**extra
)
Can be seen at : https://github.com/ibmdb/python-ibmdb/blob/master/IBM_DB/ibm_db/setup.py#L286

On:
Distributor ID: Ubuntu
Description:    Ubuntu 16.04.3 LTS
Release:        16.04
Codename:       xenial

Pip install is copying files under a duplicate append of current site-package path. E.g:
    /work/skauser/python_installations/python27/lib/python2.7/site-packages/work/skauser/python_installations/python27/lib/python2.7/site-packages/CHANGES
    /work/skauser/python_installations/python27/lib/python2.7/site-packages/work/skauser/python_installations/python27/lib/python2.7/site-packages/LICENSE
    /work/skauser/python_installations/python27/lib/python2.7/site-packages/work/skauser/python_installations/python27/lib/python2.7/site-packages/README.md
    /work/skauser/python_installations/python27/lib/python2.7/site-packages/work/skauser/python_installations/python27/lib/python2.7/site-packages/config.py.sample

On other platforms, the files are correctly copied under /work/skauser/python_installations/python27/lib/python2.7/site-packages.
>From python command line on ubuntu, get_python_lib() returns the correct path:
Type "help", "copyright", "credits" or "license" for more information.
>>> from distutils.sysconfig import get_python_lib
>>> get_python_lib()
'/work/skauser/python_installations/python27/lib/python2.7/site-packages'

I need to know why is the incorrect behavior while using pip.

Building the source as:
Python setup.py build
Python setup.py install
Copies the files correctly.

Any help is appreciated!
Thanks.
--------------------------------------------------------------------
Saba Kauser
Db2 Connect development and support.

Rocket Software Development India Pvt Ltd
Karle Town Centre - SEZ,
HUB 1 building, 4th Floor (North West Wing),
100 ft. Kempapura road, adjacent to Nagawara lake,
Nagawara, Bangalore - 560 045
E: skauser at rocketsoftware.com<mailto:skauser at rocketsoftware.com>
---------------------------------------------------------------------


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