Can't pip install from latest commit

[ZinnerRep]

Trying to install from latest verified commit with passed tests using: pip install git+https://github.com/symengine/symengine.py@cfb4f4b76755bec712e631a649a38fdf9c77494d fails requiring package configuration file from latest tagged version (0.8.1). If latest version is already installed, the above pip install runs fine, but commit changes are not applied.

[isuruf]

You need to install the C++ library if you are building from source.