Description of problem:
there is missing requires

Version-Release number of selected component (if applicable):
python-pygit2-0.21.1-1.fc21.armv7hl

How reproducible:
always

Steps to Reproduce:
1. try to run something using python-pygit2
2.
3.

Actual results:
  File "/usr/lib/python2.7/site-packages/pygit2/repository.py", line 37, in <module>
    from .ffi import ffi, C, to_str
  File "/usr/lib/python2.7/site-packages/pygit2/ffi.py", line 34, in <module>
    from cffi import FFI
ImportError: No module named cffi

Expected results:
things to just work 

Additional info:

python-cffi needs to eb a Requires