Check to see if a binding is available before trying to install it
Check to see if a binding is available before trying to install it

dstufft/cryptography,dstufft/cryptography,kimvais/cryptography,skeuomorf/cryptography,Ayrx/cryptography,bwhmather/cryptography,skeuomorf/cryptography,bwhmather/cryptography,kimvais/cryptography,skeuomorf/cryptography,Ayrx/cryptography,kimvais/cryptography,sholsapp/cryptography,glyph/cryptography,Ayrx/cryptography,Lukasa/cryptography,kimvais/cryptography,glyph/cryptography,bwhmather/cryptography,Hasimir/cryptography,Hasimir/cryptography,skeuomorf/cryptography,sholsapp/cryptography,Ayrx/cryptography,dstufft/cryptography,sholsapp/cryptography,Hasimir/cryptography,dstufft/cryptography,Lukasa/cryptography,dstufft/cryptography,Lukasa/cryptography,Hasimir/cryptography,sholsapp/cryptography,bwhmather/cryptography