NuPyCEE does not need to be installed.
Just download it.
All NuPyCEE modules are publicly available on GitHub. The repository can be found here.
Type the following command on a terminal to download a copy into your local directory.
git clone https://github.com/NuGrid/NuPyCEE.git
All python dependencies are listed in install_dependencies.sh available in the root directory of NuPyCEE.
You might be able to execute it with your shell.