If you have tried installing / updating pyOpenSSL to version 0.14 you may have run into an issue when it tries to install the required package cryptography. The specific error I encountered was:
| raise ffiplatform.VerificationError(error) | |
| cffi.ffiplatform.VerificationError: importing '/private/tmp/pip_build_root/cryptography/cryptography/hazmat/bindings/__pycache__/_cffi__x5eaa210axf0ae7e21.so': dlopen(/private/tmp/pip_build_root/cryptography/cryptography/hazmat/bindings/__pycache__/_cffi__x5eaa210axf0ae7e21.so, 2): Symbol not found: _CRYPTO_malloc_debug_init | |
| Referenced from: /private/tmp/pip_build_root/cryptography/cryptography/hazmat/bindings/__pycache__/_cffi__x5eaa210axf0ae7e21.so | |
| Expected in: flat namespace | |
| in /private/tmp/pip_build_root/cryptography/cryptography/hazmat/bindings/__pycache__/_cffi__x5eaa210axf0ae7e21.so |
To get around this, you’ll need to set some environment variables before installing cryptography:
| # install via MacPorts | |
| sudo port install openssl | |
| sudo env ARCHFLAGS="-arch x86_64" LDFLAGS="-L/opt/local/lib" CFLAGS="-I/opt/local/include" pip install cryptography | |
| # install via Homebrew | |
| brew install openssl | |
| env ARCHFLAGS="-arch x86_64" LDFLAGS="-L/usr/local/opt/openssl/lib" CFLAGS="-I/usr/local/opt/openssl/include" pip install cryptography |
A pull request has been opened to add this to the documentation but as of this writing it has not yet been merged.
