I am attempting to deploy a flask app on Heroku and it always errors at the same place. GCC fails to install and compile the Bcrypt module so I removed it from my requirements.txt (it is not used in the app). When I view the requrements.txt file, there is no mention of Bcrypt but when I push to heroku, it still tries to install it. I have committed the most recent version of requirements.txt to Git. Any help would be greatly appreciated.
I was able to get around it kind of, by successfully installing the following: "Successfully installed z3c.bcrypt python-bcrypt py-bcrypt-w32".  Installing one of these (likely the second one) is what probably included the main bcrypt library that I guess needed to be compiled? I not 100% sure...  I noticed this post is from July, I was able to download those libraries all using PIP.
Heroku - Flask - Bcrypt error