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## python-cryptography-install.md

      
        
          
            
              
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                davidalber
                / python-cryptography-install.md
            
            
              Created
              May 1, 2014 19:32
            
              
                Steps to successfully install Python cryptography package on Mac OS X 10.8.5.
              
          
        
      
        
  
      
    Prior to setting the PKG_CONFIG_PATH, as below, pip install cryptography failed with Symbol not found: _ffi_type_double on my machine running Mac OS X 10.8.5. I am not sure how commonly the error occurs for other users.
brew install libffi

# Note the version-specific path below.
PKG_CONFIG_PATH=/usr/local/Cellar/libffi/3.0.13/lib/pkgconfig/ pip install cryptography