Error when installing Homebrew: dyld: Library not loaded: @rpath/libssl.1.0.0.dylib

You can resolve the issue by installing libssh2 via conda environment manager.

conda install libssh2 

I finally figured what the problem was. The dylib couldn't be found. So I added the following line to the ~/.bash_profile (you can open this file using the nano ~/.bash_profile command or open it using any other editor than nano):

export DYLD_LIBRARY_PATH=$DYLD_LIBRARY_PATH:/opt/local/lib

This line simply tells where we should be looking for the dylibs. Just figure out where your dylibs are (in my case they are at /opt/local/lib) and add the path to the ~/.bash_profile file.)

Notice: This solution might potentially affect some other functionalities. But in my case, it helped to successfully install the Homebrew. It would be great if anyone shares a better solution if there's any.