eg: ``` hashin "numpy==1.11.0" --expression="cpy35.*-macosx.*x86_64" ``` will include - `numpy-1.11.0-cp35-cp35m-macosx_10_6_intel.macosx_10_9_intel.macosx_10_9_x86_64.macosx_10_10_intel.macosx_10_10_x86_64.whl` - `numpy-1.11.0.tar.gz`