ImportError: No module named 'pip._vendor.requests'

[davidbilik]

Hi, I've been using your buildpack for a last month and it's been working fine but when I want to create new application it fails on this:

2016-03-21T17:30:07.31+0100 [STG/210]    OUT -----> Downloaded app package (20K)
2016-03-21T17:30:07.46+0100 [STG/0]      ERR Cloning into '/tmp/buildpacks/heroku-buildpack-scipy'...
2016-03-21T17:30:26.36+0100 [STG/0]      OUT -----> Installing runtime (python-2.7.10)
2016-03-21T17:30:42.41+0100 [STG/0]      OUT -----> Installing dependencies with pip
2016-03-21T17:30:42.63+0100 [STG/0]      ERR ERROR:root:code for hash md5 was not found.
2016-03-21T17:30:42.63+0100 [STG/0]      ERR Traceback (most recent call last):
2016-03-21T17:30:42.63+0100 [STG/0]      ERR   File "/app/.heroku/python/lib/python2.7/hashlib.py", line 147, in <module>
2016-03-21T17:30:42.63+0100 [STG/0]      ERR     globals()[__func_name] = __get_hash(__func_name)
2016-03-21T17:30:42.63+0100 [STG/0]      ERR   File "/app/.heroku/python/lib/python2.7/hashlib.py", line 97, in __get_builtin_constructor
2016-03-21T17:30:42.63+0100 [STG/0]      ERR     raise ValueError('unsupported hash type ' + name)
2016-03-21T17:30:42.63+0100 [STG/0]      ERR ValueError: unsupported hash type md5
2016-03-21T17:30:42.63+0100 [STG/0]      ERR ERROR:root:code for hash sha1 was not found.
2016-03-21T17:30:42.63+0100 [STG/0]      ERR Traceback (most recent call last):
2016-03-21T17:30:42.63+0100 [STG/0]      ERR   File "/app/.heroku/python/lib/python2.7/hashlib.py", line 147, in <module>
2016-03-21T17:30:42.63+0100 [STG/0]      ERR     globals()[__func_name] = __get_hash(__func_name)
2016-03-21T17:30:42.63+0100 [STG/0]      ERR   File "/app/.heroku/python/lib/python2.7/hashlib.py", line 97, in __get_builtin_constructor
2016-03-21T17:30:42.63+0100 [STG/0]      ERR     raise ValueError('unsupported hash type ' + name)
2016-03-21T17:30:42.63+0100 [STG/0]      ERR ValueError: unsupported hash type sha1
2016-03-21T17:30:42.63+0100 [STG/0]      ERR ERROR:root:code for hash sha224 was not found.
2016-03-21T17:30:42.63+0100 [STG/0]      ERR Traceback (most recent call last):
2016-03-21T17:30:42.63+0100 [STG/0]      ERR   File "/app/.heroku/python/lib/python2.7/hashlib.py", line 147, in <module>
2016-03-21T17:30:42.63+0100 [STG/0]      ERR     globals()[__func_name] = __get_hash(__func_name)
2016-03-21T17:30:42.63+0100 [STG/0]      ERR   File "/app/.heroku/python/lib/python2.7/hashlib.py", line 97, in __get_builtin_constructor
2016-03-21T17:30:42.63+0100 [STG/0]      ERR     raise ValueError('unsupported hash type ' + name)
2016-03-21T17:30:42.63+0100 [STG/0]      ERR ValueError: unsupported hash type sha224
2016-03-21T17:30:42.63+0100 [STG/0]      ERR ERROR:root:code for hash sha256 was not found.
2016-03-21T17:30:42.63+0100 [STG/0]      ERR Traceback (most recent call last):
2016-03-21T17:30:42.63+0100 [STG/0]      ERR   File "/app/.heroku/python/lib/python2.7/hashlib.py", line 147, in <module>
2016-03-21T17:30:42.63+0100 [STG/0]      ERR     globals()[__func_name] = __get_hash(__func_name)
2016-03-21T17:30:42.63+0100 [STG/0]      ERR   File "/app/.heroku/python/lib/python2.7/hashlib.py", line 97, in __get_builtin_constructor
2016-03-21T17:30:42.63+0100 [STG/0]      ERR     raise ValueError('unsupported hash type ' + name)
2016-03-21T17:30:42.63+0100 [STG/0]      ERR ValueError: unsupported hash type sha256
2016-03-21T17:30:42.63+0100 [STG/0]      ERR ERROR:root:code for hash sha384 was not found.
2016-03-21T17:30:42.63+0100 [STG/0]      ERR Traceback (most recent call last):
2016-03-21T17:30:42.63+0100 [STG/0]      ERR   File "/app/.heroku/python/lib/python2.7/hashlib.py", line 147, in <module>
2016-03-21T17:30:42.63+0100 [STG/0]      ERR     globals()[__func_name] = __get_hash(__func_name)
2016-03-21T17:30:42.63+0100 [STG/0]      ERR   File "/app/.heroku/python/lib/python2.7/hashlib.py", line 97, in __get_builtin_constructor
2016-03-21T17:30:42.63+0100 [STG/0]      ERR     raise ValueError('unsupported hash type ' + name)
2016-03-21T17:30:42.63+0100 [STG/0]      ERR ValueError: unsupported hash type sha384
2016-03-21T17:30:42.63+0100 [STG/0]      ERR ERROR:root:code for hash sha512 was not found.
2016-03-21T17:30:42.63+0100 [STG/0]      ERR Traceback (most recent call last):
2016-03-21T17:30:42.63+0100 [STG/0]      ERR   File "/app/.heroku/python/lib/python2.7/hashlib.py", line 147, in <module>
2016-03-21T17:30:42.63+0100 [STG/0]      ERR     globals()[__func_name] = __get_hash(__func_name)
2016-03-21T17:30:42.63+0100 [STG/0]      ERR   File "/app/.heroku/python/lib/python2.7/hashlib.py", line 97, in __get_builtin_constructor
2016-03-21T17:30:42.63+0100 [STG/0]      ERR     raise ValueError('unsupported hash type ' + name)
2016-03-21T17:30:42.63+0100 [STG/0]      ERR ValueError: unsupported hash type sha512
2016-03-21T17:30:42.77+0100 [STG/0]      ERR Traceback (most recent call last):
2016-03-21T17:30:42.77+0100 [STG/0]      ERR   File "/app/.heroku/python/bin/pip", line 9, in <module>
2016-03-21T17:30:42.77+0100 [STG/0]      ERR     load_entry_point('pip==6.0.6', 'console_scripts', 'pip')()
2016-03-21T17:30:42.77+0100 [STG/0]      ERR   File "build/bdist.linux-x86_64/egg/pkg_resources/__init__.py", line 519, in load_entry_point
2016-03-21T17:30:42.77+0100 [STG/0]      ERR   File "build/bdist.linux-x86_64/egg/pkg_resources/__init__.py", line 2630, in load_entry_point
2016-03-21T17:30:42.77+0100 [STG/0]      ERR   File "build/bdist.linux-x86_64/egg/pkg_resources/__init__.py", line 2310, in load
2016-03-21T17:30:42.77+0100 [STG/0]      ERR   File "build/bdist.linux-x86_64/egg/pkg_resources/__init__.py", line 2316, in resolve
2016-03-21T17:30:42.77+0100 [STG/0]      ERR   File "/app/.heroku/python/lib/python2.7/site-packages/pip-6.0.6-py2.7.egg/pip/__init__.py", line 15, in <module>
2016-03-21T17:30:42.77+0100 [STG/0]      ERR     from pip.vcs import git, mercurial, subversion, bazaar  # noqa
2016-03-21T17:30:42.77+0100 [STG/0]      ERR   File "/app/.heroku/python/lib/python2.7/site-packages/pip-6.0.6-py2.7.egg/pip/vcs/mercurial.py", line 11, in <module>
2016-03-21T17:30:42.77+0100 [STG/0]      ERR     from pip.download import path_to_url
2016-03-21T17:30:42.77+0100 [STG/0]      ERR   File "/app/.heroku/python/lib/python2.7/site-packages/pip-6.0.6-py2.7.egg/pip/download.py", line 30, in <module>
2016-03-21T17:30:42.77+0100 [STG/0]      ERR     from pip._vendor import requests, six
2016-03-21T17:30:42.77+0100 [STG/0]      ERR   File "/app/.heroku/python/lib/python2.7/site-packages/pip-6.0.6-py2.7.egg/pip/_vendor/__init__.py", line 81, in load_module
2016-03-21T17:30:42.77+0100 [STG/0]      ERR     raise ImportError("No module named '%s'" % (name,))
2016-03-21T17:30:42.77+0100 [STG/0]      ERR ImportError: No module named 'pip._vendor.requests'
2016-03-21T17:30:42.80+0100 [STG/0]      OUT Staging failed: Buildpack compilation step failed
2016-03-21T17:30:42.99+0100 [API/0]      ERR encountered error: App staging failed in the buildpack compile phase

The content of requirements.txt doesn't matter, if i have that file empty the build still fails. I think that it has something to do with new stack cf_linuxfs2 based on this issue https://developer.ibm.com/answers/questions/236264/bluemix-and-python-deploy-error-after-platform-upg.html but I dont really know what that means or how to fix it. My knowledge of buildpacks is basically none.

One last thing - if i try to print state of my app the log says

$ cf app my_app
Showing health and status for app my_app in org ... / space ... as ...
FAILED
Server error, status code: 400, error code: 170004, message: App staging failed in the buildpack compile phase

[branliu0]

Hi, thanks for including all this information.

Did you change anything recently that caused this error?

Basically it looks like this is a problem with your Python linking properly to openssl packages, which is a lower-level issue. But I guess the buildpack might have to install Python differently on the CF stack, which explains why CF has their own fork of the base python buildpack.

I don't have the bandwidth to investigate this further right now, and fix... The answer would probably involve looking at how the CF buildpack installs Python differently from the vanilla python buildpack.