Question

logs and more details are at: https://gist.github.com/2890621

stu@vervet ~ $ virtualenv --no-site-packages testingpip
New python executable in testingpip/bin/python
Installing distribute......................done.
stu@vervet ~ $ source testingpip/bin/activate
stu@vervet ~ $ which pip
/home/stu/testingpip/bin/pip
stu@vervet ~ $ which python
/home/stu/testingpip/bin/python
stu@vervet ~ $ pip --log=piplog.log install numpy pil aptus
Downloading/unpacking numpy
...
...
...

ultimately the command fails because of the numpy dependency

but doing:

stu@vervet ~ $ pip install numpy
stu@vervet ~ $ pip install pil
stu@vervet ~ $ pip install aptus

works

Answer 1

This is caused by this line in the Aptus setup.py file.

You should report that as a bug with Aptus. If Aptus depends on numpy, it should add it to its list of dependencies, not throw an exception during installation.

Aptus should be patched to something like this:

install_requires = []

try: import numpy
except ImportError: install_requires.append('numpy')

setup(
    ...
    install_requires=install_requires,
    ...
)