Utilising Cython with Pyinstaller

Question

I am trying to build a program in python using Cython and PyInstaller. Before starting, I built this test program. However, the two modules aren't working together at all. I have tried them both separately, and they work. I looked at this question but that doesn't work.

I also tried using cython to compile it to c and then use gcc, but that doesn't work either (I added the python.h file, and gcc just aborts after complaining that the keyword doesn't exist)

#hello.pyx 
import pygame
def say_hello_to(name):
    print("Hello %s!" % name)

#hello.py
from hello import say_hello_to
say_hello_to('Me')

#setup.py
from setuptools import setup
from Cython.Build import cythonize

setup(
     name='Hello world app',
     ext_modules=cythonize("hello.pyx"),
     zip_safe=False,
)

All of this works in CPython, with :

python3 setup.py build_ext --inplace

Then

python3 hello.py

But PyInstaller keeps complaining it can't find the module hello. I tried add-data and add-binaries, as well as editing the spec file, and it still doesn't work, saying:

invalid add_data_or_binary value: 'home:Achyut-BK:hello.cpython-38-x86_64-linux-gnu.so'