cannot install with pip: inconsistent use of tabs and spaces in indentation

[dchimeno]

pip install opening_hours

Collecting opening_hours
  Downloading https://files.pythonhosted.org/packages/25/45/9a15b4c8b2901a78f72b071ad050bfc0d98adc9e0b1ecb9afc79f0750dc3/opening_hours-0.1.1.tar.gz
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/private/var/folders/dp/y2d6qpg93pbfglz0vtrt7dqc0000gq/T/pip-install-82bfx27x/opening-hours/setup.py", line 12
        if (call(["make", "-C", "C_OpeningHours", "install"])):
                                                              ^
    TabError: inconsistent use of tabs and spaces in indentation

[vcschapp]

I'm unable to install the library due to this issue... Any chance it will be fixed?