Use poetry for installation fixes the Cython install issues

[tvb]

My pyproject.toml

[tool.poetry]
name = "lead-lag"
version = "0.1.0"
description = ""
authors = ["tvb <tvb@users.noreply.github.com>"]
readme = "README.md"

[tool.poetry.dependencies]
python = "^3.12"
pandas = "^2.1.4"
numpy = "^1.26.3"
tqdm = "^4.66.1"
matplotlib = "^3.8.2"
cython = "^3.0.8"


[build-system]
requires = ["poetry-core"]
build-backend = "poetry.core.masonry.api"

After executing a poetry install, I am able to run this lib just fine. No make and setup.py tricks needed to install Cpython.