python scrypt cannot find libcrypto on macos


Today, I tried starting our local django development environment but it failed because of this error.

OSError: dlopen(lib/python2.7/site-packages/_scrypt.so, 6): Library not loaded: /usr/local/opt/openssl/lib/libcrypto.1.0.0.dylib

What does this error mean?

The precompiled scrypt is targeting a now non exising libcrypto.1.0.0.dylib, when I look at the location, it’s been replaced by an updated api version number libcrypto.1.1.dylib.

A quick solution is to soft link it to the exact same path as previous and hope that the api didn’t change much.

ln -s /usr/local/opt/openssl/lib/libcrypto.1.1.dylib /usr/local/opt/openssl/lib/libcrypto.1.0.0.dylib

That works for me, it might not for you.

If it didn’t, another solution, which is probably a better one, is to recompile scrypt with that updated version of openssl.

Instruction is on the scrypt repo.