setuptools distutils pyenv poetry anaconda pip install --user pkg-name python -m venv venv source venv/bin/activate pip install -r requirements.txt python3.8 -m venv .venv38 python3.11 -m venv .venv311 conda create -n myproject python=3.9.4 conda activate myproject pytorch
And `cmake`, and `conan`, and `autotools`, and `scons`, and `bazel`, and...
And it's written in python, so even C doesn't escape the python packaging ecosystem.